Complete Freewheels FR RINGSPANN
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Complete Freewheels FRS and FRSG for bolting to the face with sprags Application as ➧ Backstop ➧ Overrunning Clutch ➧ Indexing Freewheel Features Complete Freewheels FRS and FRSG are sealed sprag freewheels with ball bearings and ready for installation. The freewheels FRS are supplied oil-filled. The freewheels FRSG are supplied grease filled. Maximum torques up to 55 000 lb-ft. Bores up to 7 inch. Standard bores in inch dimension are available from stock. Metric bores on request. Application example Drive unit II Locking direction Complete Freewheels FRS 600 in both drive units of a transport system with a conveyor belt that moves both forward and backward (reversible operation). In order to ensure that the conveyor belt is moved under tension, forward movement is driven by drive unit I, reverse movement by drive unit II. The freewheels automatically disengage the respective non working drive, eliminating the need for expensive external clutches or brakes. Freewheeling direction Freewheeling direction Locking direction RINGSPANN has developed a utility model for such applications with reversible operation. For forward movement, drive unit II is started in freewheeling direction of freewheel II; freewheel II is in freewheeling operation and disengages drive unit II from the conveyor belt. Afterwords drive unit I is started in the locking direction of the freewheel I; freewheel I is in driving operation and the conveyor belt is moved forward by drive unit I. The speed of drive unit I is lower than that of drive unit II. Thus freewheel II remains in freewheeling operation and drive unit II is not improperly engaged. For reverse movement, the drive units are started in reverse order and direction of rotation at the corresponding speeds. The mentioned application for a reversing conveyor requires speed control for both of the drives. Conveyors operating in the same direction can use clutches in conjunction with the two drives.

Complete Freewheels FRS and FRSG for bolting to the face with sprags Indexing Freewheel Overrunning Clutch Backstop 11-1 Standard type For universal use Standard type - grease lubricated For universal use Freewheel Size Maximum torque MM lb-ft Nominal torque MN lb-ft Max. speed outer ring freewheels/ overruns rpm FRSG FRSG FRSG FRSG FRSG FRSG FRSG FRSG FRSG FRSG FRSG FRSG Bore d Standard bores inch Maximum torque MM lb-ft Mounting The customer attachment part is centered on the external diameter D and then bolted on to the face. Nominal torque MN lb-ft Labyrinth Seals The recommended...

Complete Freewheels FRX and FRZ for bolting to the face with sprag lift-off X or lift-off Z Application as ➧ Backstop ➧ Overrunning Clutch Features Complete Freewheels FRX and FRZ are sealed sprag freewheels with ball bearings and sprag lift-off X or sprag lift-off Z. 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 freewheel with shaft coupling is...

Complete Freewheels FRX and FRZ for bolting to the face with sprag lift-off X or lift-off Z Overrunning Clutch Backstop 13-1 Type with sprag lift-off X To extend service life using sprag lift-off for high speed rotating inner ring Freewheel Size Nominal torque MN lb-ft Maximum torque MM lb-ft Type with sprag lift-off Z To extend service life using sprag lift-off for high speed rotating outer ring * Not available for FRX. Max bore 0.875 inch. ** 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...