Standard SP Series Clutch SP321P Series Specifications subject to change without prior notice in the interest of continual product improvement. Contact jbj Techniques Limited tel: +44 (0)1737 767493 or email: info@jbj.co.uk, your Twin Disc representative for engineering specifications. Patent pending. www.jbj.co.uk/mechanical-power-conversion.html #DriveLineHarmony Features & Benefits: » Available in sizes SAE 11.5 to SAE 21 » Tapered roller main bearings. » Optional sintered iron plates. » Optional ball bearing throw out. » Built in hex nut. » More suitable for side load applications. » Creates 25% higher torque capacity with sintered iron plates. » Allows for more frequent engagements. » Eases adjustment verification. Specifications – SP321P Organic Sintered Model Number SP3121P9 Weight kg (lbs) SAE Housing Max. Input Torque Nm (lb-ft) 00 Maximum Safe Speed Solid Plates Split Plates Cast Drive Ring Nodular Drive Ring Cast Drive Ring Nodular Drive Ring Electric motor Up to 3 hours per day 3–10 hours per day Over 10 hours per day Multi-cylinder internal combustion engine Multi-cylinder internal combustion engine with high torque rise Single cylinder internal combustion engine 1.00 1.00 1.25 1.25 1.25 1.50 1.50 1.75 2.00 1.00 1.25 1.50 1.25 1.50 1.75 1.75 2.00 2.25 1.50 1.75 2.00 1.75 2.00 2.25 2.25 2.50 2.75 1.25 1.50 1.75 1.50 1.75 2.00 2.00 2.25 2.50 Prime Mover Duration of Service Uniform Moderate Load Heavy Load 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 5252 x HP Engine RPM = Torque (lb-ft) Torque x Load Factor = Application Torque (Use load factor from chart at left). To calculate application torque: 9550 x kW Engine RPM = Torque (Nm) Load Classifications based upon AGMA Load Characteristics All clutch engagements to be with prime mover below 1000 RPM. High inertia loads may require use of larger clutch. 9125 (6730) 11389 (8400) 1400 N/A 503 (1110) 1800 N/A 33
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