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The Low Inertia Clutch (LIC) is well-suited for high-cycle applications, such as steel shears and stamping presses. The LIC design reduces the rotational mass during starts and stops, allowing for increased cycles per minute and reduced deceleration times. This advantage also lends to reduced heat generation.
Low Inertia Clutches
Unit of Measure
Items Low Inertia Clutches
106
4520 Pound Force Inch (lbf·in) Static Torque at 100 Pounds per Square Inch (psi) Pressure Low Inertia Clutch 		Low Inertia Clutches
206
9030 Pound Force Inch (lbf·in) Static Torque at 100 Pounds per Square Inch (psi) Pressure Low Inertia Clutch 		Low Inertia Clutches
108
7480 Pound Force Inch (lbf·in) Static Torque at 100 Pounds per Square Inch (psi) Pressure Low Inertia Clutch 		Low Inertia Clutches
208
15000 Pound Force Inch (lbf·in) Static Torque at 100 Pounds per Square Inch (psi) Pressure Low Inertia Clutch 		Low Inertia Clutches
111
16800 Pound Force Inch (lbf·in) Static Torque at 100 Pounds per Square Inch (psi) Pressure Low Inertia Clutch
Description N/A The Low Inertia Clutch (LIC) is well-suited for high-cycle applications, such as steel shears and stamping presses. The LIC design reduces the rotational mass during starts and stops, allowing for increased cycles per minute and reduced deceleration times. This advantage also lends to reduced heat generation.
Brands N/A WPT®
Static Torque at 100 Pounds per Square Inch (psi) (7 Bar) Pressure1 N/A 4520 lbf·in510 N·m N/A 9030 lbf·in1020 N·m N/A 7480 lbf·in845 N·m N/A 15000 lbf·in1690 N·m N/A 16800 lbf·in1900 N·m
Maximum Speed Complete Clutch N/A 3930 rpm N/A 3930 rpm N/A 2840 rpm N/A 2840 rpm N/A 2150 rpm
Maximum Speed Hub and Center Plate N/A 5290 rpm N/A 5290 rpm N/A 4300 rpm N/A 4300 rpm N/A 3130 rpm
Maximum Slip Speed N/A 3530 rpm N/A 3530 rpm N/A 2870 rpm N/A 2870 rpm N/A 2090 rpm
Total Weight N/A 23 lb10 kg N/A 36 lb16 kg N/A 56 lb25 kg N/A 64 lb29 kg N/A 130 lb60 kg
Total Inertia N/A 1.6 lb·ft²0.066 kg·m² N/A 1.2 lb·ft²0.052 kg·m² N/A 7.2 lb·ft²0.30 kg·m² N/A 8.1 lb·ft²0.34 kg·m² N/A 26 lb·ft²1.1 kg·m²
Hub and Center Plate Weight N/A 6.6 lb3.0 kg N/A 12 lb5.6 kg N/A 9.3 lb4.2 kg N/A 21 lb10 kg N/A 27 lb12 kg
Hub and Center Plate Inertia N/A 0.17 lb·ft²0.0072 kg·m² N/A 0.35 lb·ft²0.015 kg·m² N/A 0.46 lb·ft²0.019 kg·m² N/A 0.90 lb·ft²0.038 kg·m² N/A 2.3 lb·ft²0.10 kg·m²
Lining Area N/A 39 in²250 cm² N/A 78 in²500 cm² N/A 55 in²360 cm² N/A 110 in²710 cm² N/A 110 in²730 cm²
Minimum Bore Range2 N/A 0.88 in22.4 mm N/A 0.88 in22.4 mm N/A 0.94 in23.8 mm N/A 1.13 in28.7 mm N/A 1.25 in31.8 mm
Maximum Bore Range3 N/A 1.90 in48.3 mm N/A 1.90 in48.3 mm N/A 2.50 in63.5 mm N/A 2.50 in63.5 mm N/A 2.80 in71.1 mm
Dimension - A (Imperial Mounting) N/A 8.753 in222.33 mm N/A 8.753 in222.33 mm N/A 12.125 in307.98 mm N/A 12.125 in307.98 mm N/A 16.000 in406.40 mm
Dimension - A Tolerance (Imperial Mounting) N/A +0.000 in-0.003 in+0.00 mm-0.08 mm
Dimension (B) Hole Circle (Imperial Mounting) N/A 8.00 in203.2 mm N/A 8.00 in203.2 mm N/A 11.13 in282.7 mm N/A 11.13 in282.7 mm N/A 14.75 in374.7 mm
Dimension (B) Diameter (Imperial Mounting) N/A 11/32 in N/A 11/32 in N/A 17/32 in N/A 17/32 in N/A 21/32 in
Quantity (Imperial Mounting) N/A 4 N/A 4 N/A 6 N/A 6 N/A 6
Dimension - C (Imperial Mounting) N/A 7.377 in187.38 mm N/A 7.377 in187.38 mm N/A 8.375 in212.73 mm N/A 8.375 in212.73 mm N/A 11.375 in288.93 mm
Dimension - C Tolerance (Imperial Mounting) N/A +0.003 in-0.000 in+0.08 mm-0.00 mm
Dimension - A Tolerance (Metric Mounting) N/A +0.00 mm-0.08 mm
Dimension - A (Metric Mounting) N/A 220.04 mm N/A 220.04 mm N/A 310.00 mm N/A 310.00 mm N/A 400.00 mm
Dimension (B) Hole Circle (Metric Mounting) N/A 203.0 mm N/A 203.0 mm N/A 280.0 mm N/A 280.0 mm N/A 375.0 mm
Dimension (B) Diameter (Metric Mounting) N/A 9.0 mm N/A 9.0 mm N/A 14.0 mm N/A 14.0 mm N/A 18.0 mm
Quantity (Metric Mounting) N/A 4 N/A 4 N/A 6 N/A 6 N/A 6
Dimension (C) H7 (Metric Mounting) N/A 190.00 mm N/A 190.00 mm N/A 220.00 mm N/A 220.00 mm N/A 295.00 mm
Dimension - D N/A 8-13/16 in223.8 mm N/A 8-13/16 in223.8 mm N/A 11-1/8 in282.6 mm N/A 11-1/8 in282.6 mm N/A 14-3/4 in374.7 mm
Dimension -E (Ventilated Center Plate) N/A 3-3/4 in95 mm N/A 4-15/16 in125 mm N/A 4-9/16 in116 mm N/A 5-15/16 in151 mm N/A 5-7/16 in138 mm
Dimension - E (Ductile Slotted Center Plate) N/A N/A N/A 5-7/8 in149 mm N/A 7-1/4 in184 mm N/A
Dimension - F N/A 1-7/16 in36.5 mm N/A 1-7/16 in36.5 mm N/A 1-3/4 in44.5 mm N/A 1-3/4 in44.5 mm N/A 1-3/4 in44.5 mm
Features N/A
  • High cycle life
  • Predictable preventative maintenance
  • Available in hydraulic or pneumatic actuation
  • Solid, slotted, or ventilated center plates options
  • Available with Full Marine Corrosion Protection package
  • Compatible with the Power Performance LI upgrade
Note N/A Consult WPT® Application Engineering for application assistance, service factors, specifications, and detailed drawings/3D models.
  • 1 Dynamic (slipping) Torque is 75% of the Static Torque.
  • 2 Contact WPT® for larger bore sizes. Listed bore sizes are for square key.
  • 3 Contact WPT® for larger bore sizes. Listed bore sizes are for square key.