Model SP311P Series Twin Disc Power Take-Offs Standard SP Clutch SP311P2 • SP311P3 Quality is Standard • available in sizes 11.5“ thru 21.0“ • tapered roller main bearings • Optional sintered iron plates • Optional ball bearing throw out • built in hex nut • creates suitable application torque capacity • more suitable for side load applications • Creates 25% higher torque capacity • allows for more frequent engagements • Eases adjustment verification SPECIFICATIONS – SP311P2 & SP311P3 Model Number SAE HSG. Maximum Safe Speed Max. Input Torque Nm (lb-ft) Solid Plates Split Plates Organic SP311P2 2 SP311P3 3 Sintered Cast Drive Ring Nodular Drive Ring Cast Drive Ring Nodular Drive Ring 2198 (1620) 2748 (2025) N/A 3000 N/A N/A Weight kg (lbs) 99.8 (220.0) Load classifications based upon agma load characteristics PRIME MOVER Electric motor Multi-cylinder internal combustion engine Multi-cylinder internal combustion engine with high torque rise Single cylinder internal combustion engine duration of service Up to 3 hours per day 3–10 hours per day Over 10 hours per day Up to 3 hours per day 3–10 hours per day Over 10 hours per day Up to 3 hours per day 3–10 hours per day Over 10 hours per day Up to 3 hours per day 3–10 hours per day Over 10 hours per day Driven Machine Load Classifications Uniform Moderate Shock Heavy Shock 1.00 1.00 1.25 1.00 1.25 1.50 1.50 1.75 2.00 1.25 1.50 1.75 1.25 1.25 1.50 1.25 1.50 1.75 1.75 2.00 2.25 1.50 1.75 2.00 1.50 1.75 2.00 1.75 2.00 2.25 2.25 2.50 2.75 2.00 2.25 2.50 To calculate application torque: 5252 x HP = Torque Engine RPM Torque x Load Factor = Application Torque Use load factor from chart at left All clutch engagements to be with prime mover below 1000 RPM. High inertia loads may require use of larger clutch. Contact Twin Disc application engineering department for assistance. Specifications subject to change without prior notice in the interest of continual product improvement. Contact your local Twin Disc representative for engineering specifications.

100.1 (3.96) SP311P 352.8 (13.88) For nearly a century, we’ve been putting horsepower to work by designing, engineering and manufacturing rugged-duty industrial products. Our products and our reputation are bolted to the most renowned engine manufacturers and equipment OEMs in the world. Our mission is to make your machines and vehicles more productive, more durable, more operatorfriendly, more cost-effective. From design and installation consultation through aftersale support, Twin Disc and its distributors are committed to your business. No one knows more about managing horsepower in more ways...