Low Inertia Spring-Set Brakes On WPT Power Corporation

WPT® Low Inertia Spring-Set (LISS) Brakes are a spring-applied / air-release design well suited for fail-safe applications. The LI Spring Set can also be used as a parking brake since no pressure is required to engage the brake. With adjustable spring release pressures, the LI Spring-Set can provide a range of torques that will suit many applications. WPT®'s Low Inertia Spring-Set Brakes are available in 1, 2, or 3 plate configurations with sizes ranging 6 through 60 inches.

Item #	Item Name	Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) (4.1 bar) Minimum Release Pressure	Static Torque Rating at 75 Pound Force per Square Inch (lbf/in²) (5.2 bar) Minimum Release Pressure	Static Torque Rating at 90 Pound Force per Square Inch (lbf/in²) (6.2 bar) Minimum Release Pressure	Maximum Speed Hub and Center Plate (CP)
330H-LIS	N/A 54200 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake	N/A 480000 lbf·in54200 N·m	N/A 600000 lbf·in67800 N·m	N/A 720000 lbf·in81300 N·m	N/A 1140 rpm
236-LIS	N/A 84300 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake	N/A 746000 lbf·in84300 N·m	N/A 687000 lbf·in77600 N·m	N/A 825000 lbf·in93200 N·m	N/A 960 rpm
336-LIS	N/A 137000 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake	N/A 1210000 lbf·in137000 N·m	N/A 1510000 lbf·in171000 N·m	N/A 1810000 lbf·in205000 N·m	N/A 960 rpm
242-LIS	N/A 89900 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake	N/A 796000 lbf·in89900 N·m	N/A 995000 lbf·in112000 N·m	N/A	N/A 820 rpm
342-LIS	N/A 129000 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake	N/A 1140000 lbf·in129000 N·m	N/A 1420000 lbf·in160000 N·m	N/A	N/A 820 rpm
248-LIS	N/A 190000 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake	N/A 1680000 lbf·in190000 N·m	N/A 2100000 lbf·in237000 N·m	N/A 2530000 lbf·in286000 N·m	N/A 710 rpm
348-LIS	N/A 284000 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake	N/A 2510000 lbf·in284000 N·m	N/A 3140000 lbf·in355000 N·m	N/A 3770000 lbf·in426000 N·m	N/A 710 rpm
260-LIS	N/A 368000 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake	N/A 3260000 lbf·in368000 N·m	N/A	N/A	N/A 570 rpm
360-LIS	N/A 556000 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake	N/A 4920000 lbf·in556000 N·m	N/A	N/A	N/A 570 rpm
460-LIS	N/A 646000 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake	N/A 5720000 lbf·in646000 N·m	N/A	N/A	N/A 570 rpm

330H-LIS

N/A 54200 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake

N/A 480000 lbf·in54200 N·m

N/A 600000 lbf·in67800 N·m

N/A 720000 lbf·in81300 N·m

N/A 1140 rpm

236-LIS

N/A 84300 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake

N/A 746000 lbf·in84300 N·m

N/A 687000 lbf·in77600 N·m

N/A 825000 lbf·in93200 N·m

N/A 960 rpm

336-LIS

N/A 137000 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake

N/A 1210000 lbf·in137000 N·m

N/A 1510000 lbf·in171000 N·m

N/A 1810000 lbf·in205000 N·m

N/A 960 rpm

242-LIS

N/A 89900 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake

N/A 796000 lbf·in89900 N·m

N/A 995000 lbf·in112000 N·m

N/A

N/A 820 rpm

342-LIS

N/A 129000 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake

N/A 1140000 lbf·in129000 N·m

N/A 1420000 lbf·in160000 N·m

N/A

N/A 820 rpm

248-LIS

N/A 190000 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake

N/A 1680000 lbf·in190000 N·m

N/A 2100000 lbf·in237000 N·m

N/A 2530000 lbf·in286000 N·m

N/A 710 rpm

348-LIS

N/A 284000 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake

N/A 2510000 lbf·in284000 N·m

N/A 3140000 lbf·in355000 N·m

N/A 3770000 lbf·in426000 N·m

N/A 710 rpm

260-LIS

N/A 368000 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake

N/A 3260000 lbf·in368000 N·m

N/A

N/A 570 rpm

360-LIS

N/A 556000 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake

N/A 4920000 lbf·in556000 N·m

N/A

N/A 570 rpm

460-LIS

N/A 646000 Newton Meter (N·m) Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) Minimum Release Pressure Low Inertia Spring-Set Brake

N/A 5720000 lbf·in646000 N·m

N/A

N/A 570 rpm

Item #

Item Name

Static Torque Rating at 60 Pound Force per Square Inch (lbf/in²) (4.1 bar) Minimum Release Pressure

Static Torque Rating at 75 Pound Force per Square Inch (lbf/in²) (5.2 bar) Minimum Release Pressure

Static Torque Rating at 90 Pound Force per Square Inch (lbf/in²) (6.2 bar) Minimum Release Pressure

Maximum Speed Hub and Center Plate (CP)