Complete Freewheels RFB
Complete Freewheels RFB are sprag freewheels with sealed grease lubricated ball bearings that require no maintenance.
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Features
Complete Freewheels RFB are sprag freewheels with sealed grease lubricated ball bearings that require no maintenance. They are supplied with a clamping collar or a flange for direct mounting to standard bushings.
The freewheels RFB are used as:
➧ Backstops
Maximum torques to 900 lb-ft.
Bores up to 6 inch with clamping collar.
Application example
Complete Freewheel RFB as a backstop on a radial fan. The backstop prevents reverse rotation of the fan shaft from air flow or from incorrectly polarized drive motor.
| Freewheel Size | Type | Maximum t orque MM lb-ft | Nominal t orque MN lb-ft | Maximum speed inner ring freewheels rpm | Bore d | A inch | C inch | F inch | M inch | O inch | Q inch | Connection/Bushing Type | |
| min. inch | max. inch | ||||||||||||
| RFB 350 | C | 700 | 350 | 1 800 | 1 | 3.94 | 6 | 0.75 | 1.34 | 2.0 | 5 | 16.63 | Shaft end mounted |
| RFB 450 | C | 900 | 450 | 1 800 | 4 | 6.00 | 8 | 0.75 | 1.34 | 2.0 | 5 | 16.63 | Shaft end mounted |
| RFB 450 | QD | 900 | 450 | 1 800 | - | - | 8 | 0.75 | 1.34 | 0.5 | 3 | 16.63 | E F J |
| RFB 450 | Taper Lock | 900 | 450 | 1 800 | - | - | 8 | 0.75 | 1.34 | 0.5 | 3 | 16.63 | 3 020 30 525 2 535 4 030 |
See page 9 for determination of selection torque.
Mounting
Backstops RFB are mounted with either a clamping collar to shaft end or a mounting flange that can be connected directly to a QD or Taper Lock bushing.
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