{"id":1839,"date":"2026-03-17T03:49:51","date_gmt":"2026-03-17T03:49:51","guid":{"rendered":"https:\/\/limitertorque.com\/product\/pto-shaft-friction-torque-limiter-ffvt-series-belleville-spring-v-type\/"},"modified":"2026-03-17T03:49:52","modified_gmt":"2026-03-17T03:49:52","slug":"pto-shaft-friction-torque-limiter-ffvt-series-belleville-spring-v-type","status":"publish","type":"product","link":"https:\/\/limitertorque.com\/vi\/product\/pto-shaft-friction-torque-limiter-ffvt-series-belleville-spring-v-type\/","title":{"rendered":"PTO Shaft Friction Torque Limiter \u2013 FFVT Series (Belleville Spring, V-Type)"},"content":{"rendered":"<div itemscope itemtype=\"https:\/\/schema.org\/Product\" style=\"font-family:Arial,Helvetica,sans-serif;color:#333;line-height:1.7;max-width:1200px;margin:0 auto;\">\n<p><!-- Product Overview --><\/p>\n<h1 style=\"font-size:28px;color:#1a5632;border-bottom:3px solid #e8a020;padding-bottom:10px;margin-bottom:20px;\">PTO Shaft Friction Torque Limiter \u2013 FFVT Series (Belleville Spring, V-Type)<\/h1>\n<div style=\"display:flex;flex-wrap:wrap;gap:20px;margin-bottom:30px;\">\n<div style=\"flex:1;min-width:280px;\">\n<img decoding=\"async\" src=\"https:\/\/limitertorque.com\/wp-content\/uploads\/2026\/03\/pto-shaft-torque-limiter-5.webp\" alt=\"Friction Torque Limiter for PTO shaft - 4FFVT1 series\" style=\"width:100%;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,0.12);\" loading=\"lazy\" \/>\n<\/div>\n<div style=\"flex:1;min-width:280px;\">\n<p style=\"font-size:16px;margin-bottom:10px;\">The <strong itemprop=\"name\">PTO Shaft Friction Torque Limiter \u2013 FFVT Series (Belleville Spring, V-Type)<\/strong> is a premium-quality <strong>friction torque limiter<\/strong> specifically engineered for PTO (Power Take-Off) drive shaft systems used across agricultural, industrial, and forestry machinery. Also known as a <em>PTO slip clutch<\/em>, <em>PTO safety clutch<\/em>, or <em>tractor PTO overload protector<\/em>, this device safeguards your expensive equipment from damage caused by sudden torque overloads, obstructions, and operational jamming.<\/p>\n<p><strong>Available Models:<\/strong> 4FFVT1, 4FFVT1D, 5FFVT1, 5FFVT1D, 6FFVT1, 6FFVT1D, 5FFVT1, 5FFVT1D, 6FFVT1, 6FFVT1D, 4FFVT2, 4FFVT2D, 5FFVT2, 5FFVT2D, 6FFVT2, 6FFVT2D, 6FFVT2C, 6FFVT2E, 7FFVT2, 7FFVT2D, 7FFVT2C, 7FFVT2E, 8FFVT2, 8FFVT2D, 8FFVT2C, 8FFVT2E, 6FFVT4, 6FFVT4D, 6FFVT4C, 6FFVT4E, 7FFVT4, 7FFVT4D, 7FFVT4C, 7FFVT4E, 7NFFVT4, 7NFFVT4D, 7NFFVT4C, 7NFFVT4E, 8FFVT4, 8FFVT4D, 8FFVT4C, 8FFVT4E<\/p>\n<p><strong>Torque Range:<\/strong> <span itemprop=\"additionalProperty\" itemscope itemtype=\"https:\/\/schema.org\/PropertyValue\"><span itemprop=\"name\">Torque<\/span>: <span itemprop=\"value\">900\u20132000 Nm<\/span><\/span><\/p>\n<p><strong>Spline Options:<\/strong> 1 3\/8&#8243; Z6, 1 3\/8&#8243; Z21, 1 3\/4&#8243; Z6, 1 3\/4&#8243; Z20<\/p>\n<p><strong>Key Components:<\/strong> Belleville spring, Pressure plate, Friction discs (Qty.=2), Hub, Complete bolt (Qty.=2), Bushing, Flanged yoke, Complete bolt (Qty.=8)<\/p>\n<p style=\"margin-top:15px;\"><a href=\"https:\/\/limitertorque.com\/vi\/contact\/\" style=\"display:inline-block;background-color:#e8a020;color:#fff;padding:12px 28px;border-radius:6px;text-decoration:none;font-weight:bold;font-size:15px;\">Request a Quote &rarr;<\/a><\/p>\n<\/div>\n<\/div>\n<p><!-- Technical Specifications --><\/p>\n<h2 style=\"font-size:22px;color:#1a5632;margin-top:35px;border-left:4px solid #e8a020;padding-left:12px;\">Technical Specifications &amp; Dimensions<\/h2>\n<div style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;margin:15px 0 30px 0;\">\n<table style=\"width:100%;border-collapse:collapse;min-width:600px;font-size:14px;\" border=\"1\" cellpadding=\"8\" cellspacing=\"0\">\n<tr style='background-color:#1a5632;color:#fff;'>\n<th>Series<\/th>\n<th>Max Torque (Nm)<\/th>\n<th>Friction Disc<\/th>\n<th>Spline<\/th>\n<th>A (mm)<\/th>\n<th>B (mm)<\/th>\n<th>C (mm)<\/th>\n<\/tr>\n<tr>\n<td>4FFVT1<\/td>\n<td>900<\/td>\n<td>&Phi;140<\/td>\n<td>1 3\/8&#8243;Z6<\/td>\n<td>150<\/td>\n<td>29<\/td>\n<td>&Phi;180<\/td>\n<\/tr>\n<tr>\n<td>5FFVT1<\/td>\n<td>900<\/td>\n<td>&Phi;140<\/td>\n<td>1 3\/8&#8243;Z6<\/td>\n<td>152<\/td>\n<td>29<\/td>\n<td>&Phi;180<\/td>\n<\/tr>\n<tr>\n<td>6FFVT1<\/td>\n<td>900<\/td>\n<td>&Phi;140<\/td>\n<td>1 3\/8&#8243;Z6<\/td>\n<td>160<\/td>\n<td>29<\/td>\n<td>&Phi;180<\/td>\n<\/tr>\n<tr>\n<td>4FFVT2<\/td>\n<td>1200<\/td>\n<td>&Phi;160<\/td>\n<td>1 3\/8&#8243;Z6<\/td>\n<td>143<\/td>\n<td>29<\/td>\n<td>&Phi;200<\/td>\n<\/tr>\n<tr>\n<td>5FFVT2<\/td>\n<td>1200<\/td>\n<td>&Phi;160<\/td>\n<td>1 3\/8&#8243;Z6<\/td>\n<td>145<\/td>\n<td>29<\/td>\n<td>&Phi;200<\/td>\n<\/tr>\n<tr>\n<td>6FFVT2<\/td>\n<td>1200<\/td>\n<td>&Phi;160<\/td>\n<td>1 3\/8&#8243;Z6<\/td>\n<td>153<\/td>\n<td>29<\/td>\n<td>&Phi;200<\/td>\n<\/tr>\n<tr>\n<td>7FFVT2<\/td>\n<td>1200<\/td>\n<td>&Phi;160<\/td>\n<td>1 3\/8&#8243;Z6<\/td>\n<td>162<\/td>\n<td>29<\/td>\n<td>&Phi;200<\/td>\n<\/tr>\n<tr>\n<td>8FFVT2<\/td>\n<td>1200<\/td>\n<td>&Phi;160<\/td>\n<td>1 3\/8&#8243;Z6<\/td>\n<td>162<\/td>\n<td>29<\/td>\n<td>&Phi;200<\/td>\n<\/tr>\n<tr>\n<td>6FFVT4<\/td>\n<td>1600<\/td>\n<td>&Phi;160<\/td>\n<td>1 3\/8&#8243;Z6<\/td>\n<td>175<\/td>\n<td>29<\/td>\n<td>&Phi;200<\/td>\n<\/tr>\n<tr>\n<td>7FFVT4<\/td>\n<td>2000<\/td>\n<td>&Phi;160<\/td>\n<td>1 3\/8&#8243;Z6<\/td>\n<td>182<\/td>\n<td>29<\/td>\n<td>&Phi;200<\/td>\n<\/tr>\n<tr>\n<td>7NFFVT4<\/td>\n<td>2000<\/td>\n<td>&Phi;160<\/td>\n<td>1 3\/8&#8243;Z6<\/td>\n<td>175<\/td>\n<td>29<\/td>\n<td>&Phi;200<\/td>\n<\/tr>\n<tr>\n<td>8FFVT4<\/td>\n<td>2000<\/td>\n<td>&Phi;160<\/td>\n<td>1 3\/8&#8243;Z6<\/td>\n<td>182<\/td>\n<td>29<\/td>\n<td>&Phi;200<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<p style=\"font-size:13px;color:#666;\">* All dimensions in millimeters. Torque values in Newton-meters (Nm). Spline specifications follow ISO\/ASAE standards. Contact us for custom configurations.<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/limitertorque.com\/wp-content\/uploads\/2026\/03\/pto-shaft-torque-limiter-2.webp\" alt=\"PTO shaft torque limiter Friction Torque Limiter technical drawing and assembly\" style=\"width:100%;max-width:700px;display:block;margin:20px auto;border-radius:8px;\" loading=\"lazy\" \/><\/p>\n<p><!-- Product Features & Selling Points --><\/p>\n<h2 style=\"font-size:22px;color:#1a5632;margin-top:35px;border-left:4px solid #e8a020;padding-left:12px;\">Key Features &amp; Advantages<\/h2>\n<div style=\"display:flex;flex-wrap:wrap;gap:16px;margin:20px 0;\">\n<div style=\"flex:1;min-width:280px;background:#f5f9f5;border-radius:10px;padding:20px;border:1px solid #d5e8d5;\">\n<p style=\"font-size:28px;margin:0 0 8px 0;\">&#128295;<\/p>\n<p style=\"font-weight:bold;color:#1a5632;margin:0 0 6px 0;font-size:15px;\">Easy Maintenance &#038; Service<\/p>\n<p style=\"font-size:13px;color:#555;margin:0;\">Simple modular design allows fast field service with standard tools. Replacement parts are readily available and affordable.<\/p>\n<\/div>\n<div style=\"flex:1;min-width:280px;background:#f5f9f5;border-radius:10px;padding:20px;border:1px solid #d5e8d5;\">\n<p style=\"font-size:28px;margin:0 0 8px 0;\">&#127981;<\/p>\n<p style=\"font-weight:bold;color:#1a5632;margin:0 0 6px 0;font-size:15px;\">Industrial-Grade Materials<\/p>\n<p style=\"font-size:13px;color:#555;margin:0;\">Precision-machined from hardened alloy steel with heat-treated critical surfaces for maximum durability and service life.<\/p>\n<\/div>\n<div style=\"flex:1;min-width:280px;background:#f5f9f5;border-radius:10px;padding:20px;border:1px solid #d5e8d5;\">\n<p style=\"font-size:28px;margin:0 0 8px 0;\">&#128736;<\/p>\n<p style=\"font-weight:bold;color:#1a5632;margin:0 0 6px 0;font-size:15px;\">Universal PTO Compatibility<\/p>\n<p style=\"font-size:13px;color:#555;margin:0;\">Standard 1 3\/8&#8243; Z6 spline interface fits all major tractor and implement PTO shafts without adapters or modification.<\/p>\n<\/div>\n<div style=\"flex:1;min-width:280px;background:#f5f9f5;border-radius:10px;padding:20px;border:1px solid #d5e8d5;\">\n<p style=\"font-size:28px;margin:0 0 8px 0;\">&#9971;<\/p>\n<p style=\"font-weight:bold;color:#1a5632;margin:0 0 6px 0;font-size:15px;\">Sealed &#038; Protected Design<\/p>\n<p style=\"font-size:13px;color:#555;margin:0;\">Grease-lubricated internals with dust seals protect against contamination in harsh agricultural environments.<\/p>\n<\/div>\n<div style=\"flex:1;min-width:280px;background:#f5f9f5;border-radius:10px;padding:20px;border:1px solid #d5e8d5;\">\n<p style=\"font-size:28px;margin:0 0 8px 0;\">&#128200;<\/p>\n<p style=\"font-weight:bold;color:#1a5632;margin:0 0 6px 0;font-size:15px;\">Wide Torque Selection Range<\/p>\n<p style=\"font-size:13px;color:#555;margin:0;\">Available in multiple torque ratings (900\u20132000 Nm) to match virtually any PTO-driven implement requirement.<\/p>\n<\/div>\n<div style=\"flex:1;min-width:280px;background:#f5f9f5;border-radius:10px;padding:20px;border:1px solid #d5e8d5;\">\n<p style=\"font-size:28px;margin:0 0 8px 0;\">&#9878;<\/p>\n<p style=\"font-weight:bold;color:#1a5632;margin:0 0 6px 0;font-size:15px;\">Safety Certified<\/p>\n<p style=\"font-size:13px;color:#555;margin:0;\">Manufactured under ISO 9001:2015 quality management with CE marking for European and international compliance.<\/p>\n<\/div>\n<\/div>\n<p><!-- Working Principle --><\/p>\n<h2 style=\"font-size:22px;color:#1a5632;margin-top:35px;border-left:4px solid #e8a020;padding-left:12px;\">How It Works \u2014 Operating Principle<\/h2>\n<p style=\"font-size:15px;margin:15px 0;\">This friction torque limiter uses Belleville disc springs (conical washer springs) instead of conventional coil springs to clamp friction discs against the hub. Belleville springs provide several critical advantages: they maintain consistent clamping force across a wide temperature range, they have a compact axial profile, and they can be stacked in series or parallel to achieve precise spring rate and preload characteristics. When the torque exceeds the friction capacity set by the Belleville spring preload, the discs begin to slip progressively, absorbing excess energy without abrupt disconnection. The torque setting is adjusted by changing bolt tension on the spring pack. This design delivers tighter torque tolerance and more repeatable performance than coil-spring friction limiters.<\/p>\n<p style=\"margin:10px 0;\"><strong>Reset Method:<\/strong> Automatic \u2014 continuous slip and re-engagement<\/p>\n<p><strong>Best Suited For:<\/strong> Precision applications requiring tight torque tolerance, temperature stability, and compact installation length<\/p>\n<p><!-- Application Scenarios --><\/p>\n<h2 style=\"font-size:22px;color:#1a5632;margin-top:35px;border-left:4px solid #e8a020;padding-left:12px;\">Typical Agricultural Application Scenarios<\/h2>\n<div style=\"display:flex;flex-wrap:wrap;gap:16px;margin:15px 0;\">\n<div style=\"flex:1;min-width:280px;border-left:4px solid #e8a020;padding:12px 16px;background:#fff8ed;border-radius:0 8px 8px 0;\">\n<p style=\"font-weight:bold;color:#1a5632;margin:0 0 6px 0;\">Rotary Mowers &amp; Flail Mowers<\/p>\n<p style=\"font-size:13px;color:#555;margin:0;\">Protects the mower gearbox from damage when blades strike hidden rocks, stumps, or metal debris. The torque limiter absorbs the shock load and prevents it from reaching the tractor PTO.<\/p>\n<\/div>\n<div style=\"flex:1;min-width:280px;border-left:4px solid #e8a020;padding:12px 16px;background:#fff8ed;border-radius:0 8px 8px 0;\">\n<p style=\"font-weight:bold;color:#1a5632;margin:0 0 6px 0;\">Hay Balers &amp; Round Balers<\/p>\n<p style=\"font-size:13px;color:#555;margin:0;\">Prevents baler mechanism damage during slug feeding, twine wrapping failures, or foreign object ingestion by disconnecting the driveline before damaging torque levels are reached.<\/p>\n<\/div>\n<div style=\"flex:1;min-width:280px;border-left:4px solid #e8a020;padding:12px 16px;background:#fff8ed;border-radius:0 8px 8px 0;\">\n<p style=\"font-weight:bold;color:#1a5632;margin:0 0 6px 0;\">Rotary Tillers &amp; Cultivators<\/p>\n<p style=\"font-size:13px;color:#555;margin:0;\">Guards the tiller gearbox and tractor PTO when tines encounter buried rocks, roots, or compacted soil layers that can generate extreme torque spikes.<\/p>\n<\/div>\n<div style=\"flex:1;min-width:280px;border-left:4px solid #e8a020;padding:12px 16px;background:#fff8ed;border-radius:0 8px 8px 0;\">\n<p style=\"font-weight:bold;color:#1a5632;margin:0 0 6px 0;\">Manure Spreaders<\/p>\n<p style=\"font-size:13px;color:#555;margin:0;\">Protects the beater mechanism and gearbox from overload when encountering frozen clumps, foreign objects, or uneven material distribution in the hopper.<\/p>\n<\/div>\n<div style=\"flex:1;min-width:280px;border-left:4px solid #e8a020;padding:12px 16px;background:#fff8ed;border-radius:0 8px 8px 0;\">\n<p style=\"font-weight:bold;color:#1a5632;margin:0 0 6px 0;\">Feed Mixers &amp; TMR Wagons<\/p>\n<p style=\"font-size:13px;color:#555;margin:0;\">Safeguards the mixer auger drive from damage caused by twine wrap, frozen feed blocks, or excessive loading that generates torque beyond design limits.<\/p>\n<\/div>\n<\/div>\n<p><img decoding=\"async\" src=\"https:\/\/limitertorque.com\/wp-content\/uploads\/2026\/03\/pto-shaft-torque-limiter-4.webp\" alt=\"PTO shaft torque limiter in agricultural tractor application\" style=\"width:100%;max-width:700px;display:block;margin:20px auto;border-radius:8px;\" loading=\"lazy\" \/><\/p>\n<p><!-- Type Comparison Table --><\/p>\n<h2 style=\"font-size:22px;color:#1a5632;margin-top:35px;border-left:4px solid #e8a020;padding-left:12px;\">Torque Limiter Type Comparison<\/h2>\n<div style=\"overflow-x:auto;-webkit-overflow-scrolling:touch;margin:15px 0 30px 0;\">\n<table style=\"width:100%;border-collapse:collapse;min-width:650px;font-size:14px;\" border=\"1\" cellpadding=\"8\" cellspacing=\"0\">\n<tr style=\"background-color:#1a5632;color:#fff;\">\n<th>Feature<\/th>\n<th>Ball Detent<\/th>\n<th>Friction Disc<\/th>\n<th>Shear Pin\/Bolt<\/th>\n<th>Ratchet (Pawl)<\/th>\n<th>Automatic (Cam)<\/th>\n<\/tr>\n<tr>\n<td><strong>Torque Range<\/strong><\/td>\n<td>Low\u2013Medium<\/td>\n<td>Medium\u2013High<\/td>\n<td>Low\u2013Very High<\/td>\n<td>Low\u2013High<\/td>\n<td>Medium\u2013High<\/td>\n<\/tr>\n<tr style=\"background:#f9f9f9;\">\n<td><strong>Speed Range<\/strong><\/td>\n<td>540\u20131000 RPM<\/td>\n<td>540\u20131000 RPM<\/td>\n<td>540\u20131000 RPM<\/td>\n<td>540\u20131000 RPM<\/td>\n<td>540\u20131000 RPM<\/td>\n<\/tr>\n<tr>\n<td><strong>Reset Method<\/strong><\/td>\n<td>Automatic<\/td>\n<td>Automatic (slip)<\/td>\n<td>Manual (replace bolt)<\/td>\n<td>Automatic (ratchet)<\/td>\n<td>Automatic (cam)<\/td>\n<\/tr>\n<tr style=\"background:#f9f9f9;\">\n<td><strong>Best Application<\/strong><\/td>\n<td>Light implements<\/td>\n<td>Frequent moderate overloads<\/td>\n<td>Infrequent severe overloads<\/td>\n<td>Frequent transient overloads<\/td>\n<td>High-utilization, no consumables<\/td>\n<\/tr>\n<tr>\n<td><strong>Consumable Parts<\/strong><\/td>\n<td>None<\/td>\n<td>Friction linings (long life)<\/td>\n<td>Shear bolts<\/td>\n<td>None<\/td>\n<td>None<\/td>\n<\/tr>\n<tr style=\"background:#f9f9f9;\">\n<td><strong>Torque Precision<\/strong><\/td>\n<td>Moderate<\/td>\n<td>Good (adjustable)<\/td>\n<td>Excellent (bolt-grade calibrated)<\/td>\n<td>Good<\/td>\n<td>Very Good (adjustable)<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<p><!-- Installation & Usage Guide --><\/p>\n<h2 style=\"font-size:22px;color:#1a5632;margin-top:35px;border-left:4px solid #e8a020;padding-left:12px;\">Installation &amp; Usage Guide<\/h2>\n<div style=\"background:#f5f9f5;border:1px solid #c5dcc5;border-radius:8px;padding:20px;margin:15px 0;\">\n<h3 style=\"color:#1a5632;font-size:17px;margin-top:0;\">Installation Steps<\/h3>\n<p><strong>Step 1:<\/strong> Verify that the PTO shaft spline size matches the torque limiter spline specification (1 3\/8&#8243; Z6, 1 3\/8&#8243; Z21, 1 3\/4&#8243; Z6, 1 3\/4&#8243; Z20). Clean all spline surfaces thoroughly.<\/p>\n<p><strong>Step 2:<\/strong> Slide the torque limiter onto the PTO shaft spline, ensuring full engagement. Secure with the provided push pin kit or retaining hardware.<\/p>\n<p><strong>Step 3:<\/strong> Connect the output side (yoke or splined shaft) to the implement input shaft or gearbox. Ensure proper alignment and secure all fasteners to the recommended torque.<\/p>\n<p><strong>Step 4:<\/strong> Apply grease through the grease nipple to lubricate the spline interface and internal components. Use lithium-based EP grease (NLGI #2).<\/p>\n<p><strong>Step 5:<\/strong> Perform a low-speed test run to verify correct engagement and smooth operation before full-power operation.<\/p>\n<h3 style=\"color:#1a5632;font-size:17px;\">Safety &amp; Maintenance Tips<\/h3>\n<p>&#9888; Always disengage the tractor PTO before inspecting or servicing the torque limiter.<\/p>\n<p>&#9888; Use only genuine replacement parts specified for your series to maintain the correct torque rating.<\/p>\n<p>&#9888; Re-grease spline connections every 8 operating hours or as specified in your equipment manual.<\/p>\n<p>&#9888; Inspect for wear, cracks, or damage before each season. Replace worn components immediately.<\/p>\n<p>&#9888; Never operate with damaged or missing PTO shaft safety shields.<\/p>\n<\/div>\n<p><!-- Selection Guide --><\/p>\n<h2 style=\"font-size:22px;color:#1a5632;margin-top:35px;border-left:4px solid #e8a020;padding-left:12px;\">Selection Guide \u2014 Choosing the Right Model<\/h2>\n<div style=\"background:#fff8ed;border:1px solid #e8cfa0;border-radius:8px;padding:20px;margin:15px 0;\">\n<p>Selecting the correct torque limiter requires confirming the following parameters:<\/p>\n<p><strong>&#10003; Required Torque Rating (Nm):<\/strong> Match the implement&#8217;s maximum operating torque plus a 20\u201330% safety margin.<\/p>\n<p><strong>&#10003; PTO Shaft Spline Size:<\/strong> Commonly 1 3\/8&#8243; Z6 (6-spline) or 1 3\/4&#8243; Z6\/Z20. Verify both input and output spline requirements.<\/p>\n<p><strong>&#10003; PTO Speed:<\/strong> Standard 540 RPM or economy 1000 RPM \u2014 confirm your implement&#8217;s requirement.<\/p>\n<p><strong>&#10003; Connection Type:<\/strong> Yoke output for standard shaft tubes, splined shaft for inline assemblies, or flanged output for direct gearbox mounting.<\/p>\n<p><strong>&#10003; Overload Frequency:<\/strong> Frequent overloads favor auto-reset types (ratchet, friction, automatic). Infrequent but severe overloads suit shear bolt types.<\/p>\n<p><strong>&#10003; Environmental Conditions:<\/strong> Consider dust, moisture, temperature extremes. Sealed automatic and friction types offer superior protection in harsh environments.<\/p>\n<p style=\"margin-top:15px;\">Need help choosing? <a href=\"https:\/\/limitertorque.com\/vi\/contact\/\" style=\"color:#1a5632;font-weight:bold;\">Li\u00ean h\u1ec7 v\u1edbi \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt c\u1ee7a ch\u00fang t\u00f4i<\/a> for personalized selection assistance.<\/p>\n<\/div>\n<p><!-- Quality Certification --><\/p>\n<h2 style=\"font-size:22px;color:#1a5632;margin-top:35px;border-left:4px solid #e8a020;padding-left:12px;\">Quality Certification &amp; Service Commitment<\/h2>\n<div style=\"display:flex;flex-wrap:wrap;gap:16px;margin:15px 0;\">\n<div style=\"flex:1;min-width:200px;background:#f5f9f5;border-radius:8px;padding:15px;text-align:center;\">\n<p style=\"font-size:32px;margin:0;\">&#9989;<\/p>\n<p style=\"font-weight:bold;color:#1a5632;\">ISO 9001:2015<\/p>\n<p style=\"font-size:13px;\">Certified quality management system ensuring consistent product excellence<\/p>\n<\/div>\n<div style=\"flex:1;min-width:200px;background:#f5f9f5;border-radius:8px;padding:15px;text-align:center;\">\n<p style=\"font-size:32px;margin:0;\">&#9989;<\/p>\n<p style=\"font-weight:bold;color:#1a5632;\">CE Marked<\/p>\n<p style=\"font-size:13px;\">Compliant with European safety, health, and environmental protection standards<\/p>\n<\/div>\n<div style=\"flex:1;min-width:200px;background:#f5f9f5;border-radius:8px;padding:15px;text-align:center;\">\n<p style=\"font-size:32px;margin:0;\">&#128170;<\/p>\n<p style=\"font-weight:bold;color:#1a5632;\">12-Month Warranty<\/p>\n<p style=\"font-size:13px;\">Full warranty against manufacturing defects under normal operating conditions<\/p>\n<\/div>\n<div style=\"flex:1;min-width:200px;background:#f5f9f5;border-radius:8px;padding:15px;text-align:center;\">\n<p style=\"font-size:32px;margin:0;\">&#128666;<\/p>\n<p style=\"font-weight:bold;color:#1a5632;\">Global Shipping<\/p>\n<p style=\"font-size:13px;\">Fast worldwide delivery with professional export packaging and documentation<\/p>\n<\/div>\n<\/div>\n<p><img decoding=\"async\" src=\"https:\/\/limitertorque.com\/wp-content\/uploads\/2024\/01\/pto-drive-shaft-production-workshop.jpg\" alt=\"PTO drive shaft torque limiter manufacturing workshop\" style=\"width:100%;max-width:700px;display:block;margin:20px auto;border-radius:8px;\" loading=\"lazy\" \/><\/p>\n<p><!-- FAQ Section --><\/p>\n<h2 style=\"font-size:22px;color:#1a5632;margin-top:35px;border-left:4px solid #e8a020;padding-left:12px;\">Frequently Asked Questions (FAQ)<\/h2>\n<div itemscope itemtype=\"https:\/\/schema.org\/FAQPage\" style=\"margin:15px 0;\">\n<div itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\" style=\"margin-bottom:5px;\">\n<details style=\"border:1px solid #e0e0e0;border-radius:8px;overflow:hidden;\">\n<summary style=\"padding:14px 18px;background:#f5f9f5;cursor:pointer;font-weight:bold;color:#1a5632;font-size:15px;list-style:none;\" itemprop=\"name\">What torque rating do I need for my implement?<\/summary>\n<div itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding:14px 18px;\">\n<p itemprop=\"text\" style=\"margin:0;font-size:14px;color:#444;\">The required torque rating depends on your implement&#8217;s maximum operating torque. As a general rule, select a torque limiter rated at 1.2 to 1.5 times the implement&#8217;s normal peak operating torque. Consult your implement manufacturer&#8217;s specifications or contact our engineering team for personalized guidance.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<div itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\" style=\"margin-bottom:5px;\">\n<details style=\"border:1px solid #e0e0e0;border-radius:8px;overflow:hidden;\">\n<summary style=\"padding:14px 18px;background:#f5f9f5;cursor:pointer;font-weight:bold;color:#1a5632;font-size:15px;list-style:none;\" itemprop=\"name\">How do I know when the torque limiter has activated?<\/summary>\n<div itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding:14px 18px;\">\n<p itemprop=\"text\" style=\"margin:0;font-size:14px;color:#444;\">Depending on the type: shear bolt limiters show a visibly sheared bolt; ratchet limiters produce a distinct clicking sound during slip; friction limiters emit a slight odor and sound during sustained slipping; automatic cam limiters produce a clicking sensation. In all cases, the implement stops receiving power while the PTO shaft continues turning.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<div itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\" style=\"margin-bottom:5px;\">\n<details style=\"border:1px solid #e0e0e0;border-radius:8px;overflow:hidden;\">\n<summary style=\"padding:14px 18px;background:#f5f9f5;cursor:pointer;font-weight:bold;color:#1a5632;font-size:15px;list-style:none;\" itemprop=\"name\">Can I adjust the torque setting?<\/summary>\n<div itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding:14px 18px;\">\n<p itemprop=\"text\" style=\"margin:0;font-size:14px;color:#444;\">Friction-type and automatic (cam-type) torque limiters allow field adjustment of the torque setting by changing spring preload through bolt tension. Shear bolt types are set by the bolt grade and cannot be adjusted \u2014 different torque ratings require different bolt specifications. Ratchet types have a fixed setting determined by the number and spring rate of the pawls.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<div itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\" style=\"margin-bottom:5px;\">\n<details style=\"border:1px solid #e0e0e0;border-radius:8px;overflow:hidden;\">\n<summary style=\"padding:14px 18px;background:#f5f9f5;cursor:pointer;font-weight:bold;color:#1a5632;font-size:15px;list-style:none;\" itemprop=\"name\">What maintenance does the torque limiter require?<\/summary>\n<div itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding:14px 18px;\">\n<p itemprop=\"text\" style=\"margin:0;font-size:14px;color:#444;\">Regular greasing through the grease nipple (every 8 operating hours), visual inspection for wear or damage before each season, and replacement of worn friction linings (friction types) or keeping spare shear bolts on hand (shear bolt types). Automatic and ratchet types require minimal maintenance beyond lubrication.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<div itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\" style=\"margin-bottom:5px;\">\n<details style=\"border:1px solid #e0e0e0;border-radius:8px;overflow:hidden;\">\n<summary style=\"padding:14px 18px;background:#f5f9f5;cursor:pointer;font-weight:bold;color:#1a5632;font-size:15px;list-style:none;\" itemprop=\"name\">Is this torque limiter compatible with my PTO shaft?<\/summary>\n<div itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding:14px 18px;\">\n<p itemprop=\"text\" style=\"margin:0;font-size:14px;color:#444;\">This product uses standard 1 3\/8&#8243; Z6, 1 3\/8&#8243; Z21, 1 3\/4&#8243; Z6, 1 3\/4&#8243; Z20 spline connections, which are compatible with the vast majority of agricultural PTO shafts worldwide. If your equipment uses a different spline configuration, we offer adapters and custom spline options. Contact us with your shaft specifications for confirmation.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<div itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\" style=\"margin-bottom:5px;\">\n<details style=\"border:1px solid #e0e0e0;border-radius:8px;overflow:hidden;\">\n<summary style=\"padding:14px 18px;background:#f5f9f5;cursor:pointer;font-weight:bold;color:#1a5632;font-size:15px;list-style:none;\" itemprop=\"name\">What is the difference between 540 RPM and 1000 RPM PTO?<\/summary>\n<div itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding:14px 18px;\">\n<p itemprop=\"text\" style=\"margin:0;font-size:14px;color:#444;\">Standard PTO operates at 540 RPM and is used for most agricultural implements. Economy PTO (also called 1000 RPM PTO) is used for lighter implements to reduce engine RPM and fuel consumption. Our torque limiters are rated for both speeds. Select the spline size matching your PTO standard: typically 1 3\/8&#8243; Z6 for 540 RPM and 1 3\/4&#8243; Z20 for 1000 RPM.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<div itemscope itemprop=\"mainEntity\" itemtype=\"https:\/\/schema.org\/Question\" style=\"margin-bottom:5px;\">\n<details style=\"border:1px solid #e0e0e0;border-radius:8px;overflow:hidden;\">\n<summary style=\"padding:14px 18px;background:#f5f9f5;cursor:pointer;font-weight:bold;color:#1a5632;font-size:15px;list-style:none;\" itemprop=\"name\">Do you offer OEM and private-label manufacturing?<\/summary>\n<div itemscope itemprop=\"acceptedAnswer\" itemtype=\"https:\/\/schema.org\/Answer\" style=\"padding:14px 18px;\">\n<p itemprop=\"text\" style=\"margin:0;font-size:14px;color:#444;\">Yes, we provide full OEM manufacturing services including custom torque ratings, special spline configurations, custom markings, and private-label packaging. Minimum order quantities apply. Contact our sales team at the link below to discuss your requirements.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n<p><!-- Customer Reviews --><\/p>\n<h2 style=\"font-size:22px;color:#1a5632;margin-top:35px;border-left:4px solid #e8a020;padding-left:12px;\">What Our Customers Say<\/h2>\n<div style=\"margin:15px 0;\">\n<div style=\"border:1px solid #e8e8e8;border-radius:8px;padding:16px;margin-bottom:12px;background:#fafafa;\">\n<p style=\"margin:0 0 6px 0;\"><span style=\"font-size:18px;\">&#127475;&#127487;<\/span> <strong>Craig W.<\/strong> \u2014 <em>Dairy farmer, Waikato, New Zealand<\/em><\/p>\n<p style=\"margin:0;font-size:14px;color:#444;\">&#8220;Using these on our pasture toppers and feed wagons. They&#8217;ve saved our PTO shafts from damage multiple times when hitting hidden stumps. Brilliant design \u2014 the auto-reset means we don&#8217;t lose any milking time.&#8221;<\/p>\n<p style=\"margin:5px 0 0 0;color:#e8a020;\">&#9733;&#9733;&#9733;&#9733;&#9733;<\/p>\n<\/div>\n<div style=\"border:1px solid #e8e8e8;border-radius:8px;padding:16px;margin-bottom:12px;background:#fafafa;\">\n<p style=\"margin:0 0 6px 0;\"><span style=\"font-size:18px;\">&#127468;&#127463;<\/span> <strong>William D.<\/strong> \u2014 <em>Arable contractor, Yorkshire, United Kingdom<\/em><\/p>\n<p style=\"margin:0;font-size:14px;color:#444;\">&#8220;Top-notch manufacturing quality. These drop straight onto standard UK PTO shafts and the torque ratings are spot-on. I&#8217;ve fitted them on cultivators, grain drills, and mowers \u2014 all performing perfectly.&#8221;<\/p>\n<p style=\"margin:5px 0 0 0;color:#e8a020;\">&#9733;&#9733;&#9733;&#9733;&#9733;<\/p>\n<\/div>\n<div style=\"border:1px solid #e8e8e8;border-radius:8px;padding:16px;margin-bottom:12px;background:#fafafa;\">\n<p style=\"margin:0 0 6px 0;\"><span style=\"font-size:18px;\">&#127462;&#127482;<\/span> <strong>James M.<\/strong> \u2014 <em>Grain farmer, NSW, Australia<\/em><\/p>\n<p style=\"margin:0;font-size:14px;color:#444;\">&#8220;We fitted these torque limiters on all our header drives after losing a gearbox last harvest. They&#8217;ve triggered twice on hidden rocks and saved us thousands in repairs each time. Absolutely essential equipment for Australian broadacre farming.&#8221;<\/p>\n<p style=\"margin:5px 0 0 0;color:#e8a020;\">&#9733;&#9733;&#9733;&#9733;&#9733;<\/p>\n<\/div>\n<div style=\"border:1px solid #e8e8e8;border-radius:8px;padding:16px;margin-bottom:12px;background:#fafafa;\">\n<p style=\"margin:0 0 6px 0;\"><span style=\"font-size:18px;\">&#127465;&#127466;<\/span> <strong>Hans K.<\/strong> \u2014 <em>Agricultural contractor, Bavaria, Germany<\/em><\/p>\n<p style=\"margin:0;font-size:14px;color:#444;\">&#8220;Excellent build quality \u2014 typical of what we expect for professional machinery. The torque ratings are accurate and the fit on our Walterscheid PTO shafts is perfect. We&#8217;ve standardized on these across our fleet.&#8221;<\/p>\n<p style=\"margin:5px 0 0 0;color:#e8a020;\">&#9733;&#9733;&#9733;&#9733;&#9733;<\/p>\n<\/div>\n<div style=\"border:1px solid #e8e8e8;border-radius:8px;padding:16px;margin-bottom:12px;background:#fafafa;\">\n<p style=\"margin:0 0 6px 0;\"><span style=\"font-size:18px;\">&#127463;&#127479;<\/span> <strong>Carlos S.<\/strong> \u2014 <em>Sugarcane equipment dealer, S&atilde;o Paulo, Brazil<\/em><\/p>\n<p style=\"margin:0;font-size:14px;color:#444;\">&#8220;Reliable performance in extremely tough conditions. Brazilian sugarcane operations are brutal on drivelines, and these limiters consistently protect our customers&#8217; equipment. Great value for the price.&#8221;<\/p>\n<p style=\"margin:5px 0 0 0;color:#e8a020;\">&#9733;&#9733;&#9733;&#9733;&#9733;<\/p>\n<\/div>\n<\/div>\n<p><!-- Related Products --><\/p>\n<h2 style=\"font-size:22px;color:#1a5632;margin-top:35px;border-left:4px solid #e8a020;padding-left:12px;\">Related PTO Shaft Products &amp; Accessories<\/h2>\n<div style=\"display:flex;flex-wrap:wrap;gap:16px;margin:15px 0;\">\n<div style=\"flex:1;min-width:220px;border:1px solid #e0e0e0;border-radius:8px;padding:15px;text-align:center;\">\n<img decoding=\"async\" src=\"https:\/\/limitertorque.com\/wp-content\/uploads\/2024\/01\/related-pto-shaft-parts.webp\" alt=\"PTO shaft parts and accessories\" style=\"width:100%;border-radius:6px;margin-bottom:10px;\" loading=\"lazy\" \/><\/p>\n<p style=\"font-weight:bold;color:#1a5632;\">PTO Shaft Components<\/p>\n<p style=\"font-size:13px;\">Complete range of PTO shaft yokes, cross bearings, tubes, shields, and adapters for all standard sizes.<\/p>\n<p><a href=\"https:\/\/shaft-pto.com\" style=\"color:#e8a020;font-weight:bold;\" target=\"_blank\" rel=\"noopener\">View PTO Shafts &rarr;<\/a><\/p>\n<\/div>\n<div style=\"flex:1;min-width:220px;border:1px solid #e0e0e0;border-radius:8px;padding:15px;text-align:center;\">\n<img decoding=\"async\" src=\"https:\/\/limitertorque.com\/wp-content\/uploads\/2024\/01\/pto-shaft-and-gearbox.webp\" alt=\"PTO shaft and agricultural gearbox assembly\" style=\"width:100%;border-radius:6px;margin-bottom:10px;\" loading=\"lazy\" \/><\/p>\n<p style=\"font-weight:bold;color:#1a5632;\">Agricultural Gearboxes<\/p>\n<p style=\"font-size:13px;\">Matched gearboxes designed to work seamlessly with our PTO shafts and torque limiters.<\/p>\n<p><a href=\"https:\/\/limitertorque.com\/vi\/\" style=\"color:#e8a020;font-weight:bold;\">Explore Products &rarr;<\/a><\/p>\n<\/div>\n<div style=\"flex:1;min-width:220px;border:1px solid #e0e0e0;border-radius:8px;padding:15px;\">\n<p style=\"font-weight:bold;color:#1a5632;\">Available PTO Accessories:<\/p>\n<p style=\"font-size:13px;\">&#8226; PTO shaft yokes (plain bore, splined, quick-release)<\/p>\n<p style=\"font-size:13px;\">&#8226; Safety shields and guard tubes (EN 12965 compliant)<\/p>\n<p style=\"font-size:13px;\">&#8226; Spline adapters (1 3\/8&#8243; to 1 3\/4&#8243; conversion)<\/p>\n<p style=\"font-size:13px;\">&#8226; Cross bearing kits and U-joint repair kits<\/p>\n<p style=\"font-size:13px;\">&#8226; Telescoping PTO shaft tubes (triangular and lemon profile)<\/p>\n<p style=\"font-size:13px;\">&#8226; Push pin kits and retaining hardware<\/p>\n<\/div>\n<\/div>\n<p><!-- Call to Action --><\/p>\n<div style=\"background:linear-gradient(135deg,#1a5632,#2d8a56);color:#fff;padding:30px;border-radius:10px;text-align:center;margin:35px 0;\">\n<h2 style=\"font-size:24px;margin:0 0 10px 0;color:#fff;\">Ready to Protect Your Equipment?<\/h2>\n<p style=\"font-size:16px;margin-bottom:20px;color:#e0f0e0;\">Whether you need a single replacement unit or bulk OEM supply, our team is ready to help you select the perfect torque limiter for your application. We offer competitive B2B pricing, technical consultation, and fast global delivery.<\/p>\n<p><a href=\"https:\/\/limitertorque.com\/vi\/contact\/\" style=\"display:inline-block;background-color:#e8a020;color:#fff;padding:14px 36px;border-radius:8px;text-decoration:none;font-weight:bold;font-size:17px;margin:5px;\">Get a Free Quote &rarr;<\/a><br \/>\n<a href=\"https:\/\/limitertorque.com\/vi\/\" style=\"display:inline-block;background-color:transparent;color:#fff;padding:14px 36px;border-radius:8px;text-decoration:none;font-weight:bold;font-size:17px;border:2px solid #fff;margin:5px;\">Browse All Products<\/a><\/p>\n<p style=\"font-size:13px;margin-top:15px;color:#c0dcc0;\">OEM &amp; distributor partnerships welcome &middot; MOQ as low as 10 units &middot; Custom specifications available<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>The <strong>FFVT Series Friction Torque Limiter<\/strong> integrates Belleville spring technology with a V-type yoke design for PTO shaft torque protection at <strong>900\u20132000 Nm<\/strong>. The Belleville disc springs deliver consistent clamping force on friction discs regardless of temperature fluctuations, providing stable and repeatable torque limiting in demanding field conditions. The V-type yoke housing offers alternative mounting geometry for specific implement interface requirements. &Phi;140 to &Phi;160 friction disc options with multiple spline configurations. <em>Belleville spring precision<\/em>, <em>V-type mounting flexibility<\/em>, and <em>stable torque control across temperatures<\/em> define this advanced friction limiter series.<\/p>","protected":false},"featured_media":1774,"comment_status":"closed","ping_status":"open","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[5117],"product_tag":[5121,5125,5122,5127,5119,5126,5123,5118,5120,5124],"class_list":{"0":"post-1839","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-friction-torque-limiter","7":"product_tag-adjustable-torque-limiter-pto","8":"product_tag-agricultural-friction-safety-clutch","9":"product_tag-belleville-spring-friction-clutch","10":"product_tag-compact-friction-torque-limiter-pto","11":"product_tag-friction-disc-pto-slip-clutch","12":"product_tag-pto-driveline-friction-coupling","13":"product_tag-pto-friction-overload-protector","14":"product_tag-pto-friction-torque-limiter","15":"product_tag-pto-shaft-friction-clutch","16":"product_tag-spring-loaded-friction-disc-clutch","18":"first","19":"instock","20":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/limitertorque.com\/vi\/wp-json\/wp\/v2\/product\/1839","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/limitertorque.com\/vi\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/limitertorque.com\/vi\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/limitertorque.com\/vi\/wp-json\/wp\/v2\/comments?post=1839"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/limitertorque.com\/vi\/wp-json\/wp\/v2\/media\/1774"}],"wp:attachment":[{"href":"https:\/\/limitertorque.com\/vi\/wp-json\/wp\/v2\/media?parent=1839"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/limitertorque.com\/vi\/wp-json\/wp\/v2\/product_brand?post=1839"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/limitertorque.com\/vi\/wp-json\/wp\/v2\/product_cat?post=1839"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/limitertorque.com\/vi\/wp-json\/wp\/v2\/product_tag?post=1839"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}