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SSB 308

Wichita Spring-Set Air Release Brakes are ideal for fail safe protection of process equipment. Constructed of high strength cast iron, this improved design has thick friction discs for longer wear life. The fast acting airtube design assures quick, smooth stops.


Assembly Number


Dynamic Torque Rating (60 psi/4.1 bar)

8800 lb•in
994 Nm

Dynamic Torque Rating (75 psi/5.2 bar)

11300 lb•in
1277 Nm

Dynamic Torque Rating (90 psi/6.2 bar)

13400 lb•in
1514 Nm

Maximum Bore Size

2.25 in
57 mm

Maximum Speed (Standard Airtube)

2870 rpm

Maximum Speed (High Speed Airtube)1

4300 rpm

Total Brake (Weight)

87 lb
39 kg

Disc & Gear (Weight)

28 lb
12.7 kg

Disc & Gear (Inertia)

2.00 lb•ft2
0.084 kg•m2


Wichita Clutch


Air Applied


1Consult Factory for Special Assembly Number.