The Stieber NFR Ø20 mm freewheel is a durable roller-type freewheel designed for applications that require high torque in compact spaces. This unit features an Ø20 mm shaft, and it operates at an overrunning speed of 650 rpm for both inner and outer races. The NFR series is engineered for use in environments where external lubrication and sealing are necessary, as the unit does not include any internal sealing.

Technical Specifications:

• Shaft diameter: Ø20 mm

• Overrunning speed (imax): 650 rpm

• Max speed outer race (amax): 650 rpm

• Max torque: 188 Nm

• Material: Steel

• Bearing support: Steel-on-steel (inner race supported)

• Sealing: Not included – external sealing and lubrication required

• Lubrication: Oil (externally supplied)

• Outer race fit: Positive n6 tolerance for press fit in H7 housing

• Torque transmission: Additional side notches

• Inner race: Keyed for torque locking

Application Notes:

• External lubrication and sealing required

• Suitable for both horizontal and vertical mounting

• Designed for compact, high-torque applications

• Ideal for low-speed indexing and overrunning functions

• Reliable performance in high-torque, confined spaces