Complete Freewheels FRX and FRZ
Complete Freewheels FRX and FRZ are sealed sprag freewheels with ball bearings and sprag lift-off X or sprag lift-off Z.
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Complete Freewheels FRX and FRZ
Features
Complete Freewheels FRX and FRZ are sealed sprag freewheels with ball bearings and sprag lift-off X or sprag lift-off Z.
The freewheels FRX and FRZ are used as:
➧ Backstops
➧ Overrunning Clutches
Maximum torques up to 30 000 lb-ft.
Bores up to 5.438 inch. Standard bores in inch dimension are available from stock. Metric bores on request.
Application example
Complete Freewheel FRX 600 as an overrunning clutch in the drive unit of a conveyor belt system with additional creep drive. The free - wheel with shaft coupling is installed between the main motor and the creep drive. When the creep drive operates, the freewheel is in driving operation and drives the belt at low speed. During normal operation (freewheeling operation), the main motor drives and the inner ring overruns and the creep drive is automatically disengaged. With this high speed, sprag lift-off X is used; the sprags work in freewheeling operation without contact and are wear-free.
| Freewheel Size | Bo Standard bore inch | re d s | max. inch | D inch | F inch | G Thread | L inch | H inch | O inch | T inch | Z* | Weight lbs | |||||||
| FR … 400 | 0.500 | 0.625 | 0.750 | 0.875 | 1.000 | 1.125 | 1.125 | 3.500 | 0.032 | 0.312-24 | 2.750 | 0.500 | 0.750 | 2.875 | 4 | 6.0 | |||
| FR … 500 | 0.875 | 1.000 | 1.125 | 1.250 | 1.312 | 1.312 | 4.250 | 0.063 | 0.312-24 | 3.500 | 0.625 | 1.000 | 3.625 | 4 | 10.0 | ||||
| FR … 550 | 1.250 | 1.312 | 1.500 | 1.625 | 1.625 | 4.750 | 0.063 | 0.312-24 | 3.250 | 0.540 | 0.750 | 4.250 | 6 | 12.0 | |||||
| FR … 600 | 1.250 | 1.375 | 1.438 | 1.500 | 1.625 | 1.688 | 1.750 | 1.938 | 2.000 | 2.000 | 5.375 | 0.063 | 0.312-24 | 3.750 | 0.625 | 1.000 | 4.750 | 6 | 19.0 |
| FR … 650 | 1.938 | 2.000 | 2.250 | 2.438 | 2.500 | 2.500 | 6.500 | 0.063 | 0.375-24 | 3.500 | 0.750 | 1.000 | 5.750 | 8 | 24.0 | ||||
| FR … 700 | 1.938 | 2.000 | 2.250 | 2.438 | 2.500 | 2.750 | 2.938 | 2.938 | 7.125 | 0.063 | 0.375-24 | 5.000 | 0.750 | 1.000 | 6.250 | 8** | 42.0 | ||
| FR … 750 | 2.438 | 2.500 | 2.938 | 3.000 | 3.250 | 3.438 | 3.438 | 8.750 | 0.063 | 0.500-20 | 6.000 | 0.875 | 1.250 | 7.000 | 8** | 83.0 | |||
| FR … 775 | 2.750 | 2.938 | 3.000 | 3.250 | 3.438 | 3.500 | 3.750 | 3.750 | 9.750 | 0.063 | 0.500-20 | 6.000 | 0.875 | 1.250 | 8.500 | 8 | 96.0 | ||
| FR … 800 | 3.000 | 3.250 | 3.438 | 3.500 | 3.750 | 3.937 | 4.000 | 4.250 | 4.500 | 4.500 | 10.000 | 0.063 | 0.500-20 | 6.000 | 0.875 | 1.250 | 8.937 | 8 | 102.0 |
| FR … 900 | 4.000 | 4.438 | 4.500 | 4.938 | 5.000 | 5.438 | 5.438 | 12.000 | 0.063 | 0.625-18 | 6.375 | 1.000 | 1.375 | 9.750 | 10 | 156.0 | |||
* Z = Number of tapped holes G on pitch circle T.
** Six holes are equally spaced 60° apart with two additional holes located 30° from the six equally spaced holes and 180° apart.
Keyway dimensions upon request by customers.
Mounting The recommended tolerance of the shaft is + 0 / - 0.001 inch and the tolerance of the pilot diameter D of the attachment part is - 0 / + 0.002 inch. | Labyrinth Seals Labyrinth seals are available to provide addi - tional protection for harsh environments. |
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