Flexible Couplings

When a brake or clutch is foot mounted, and connected to a fully supported shaft, a flexible coupling must be used. Since perfect shaft alignment is impossible, flexible couplings are needed to protect the bearings from destructive side loads.

Oldham style - 3 piece design . . . 2 hubs and 1 black disk. Disk groove slides along hub's tenon, to allow for misalignment. Beam style - 1 piece design . . . Spiral slit flexes to allow for misalignment.

Flexible Couplings

FOR BRAKE OR CLUTCH MODEL	CUSTOMER SHAFT		FLEXIBLE COUPLING DIMENSIONS
	Diameter	Type	Part Number	Diameter	Length	Shaft Gap		Type
						min.	max.
B5Z	3/16	clamp	J16-3-2	0.63	0.80	0.02	0.40	Beam
B1, C2			J19-3-3	0.75	0.90
B2	1/4		J22-4-4	0.88	1.06		0.46
C5	5/16		J25-5-5	1.00	1.25		0.65
B6	3/8		J28-6-6	1.13	1.50		0.91
B15, C15	3/8	2 flats at 90 degrees	J33-F37-F37	1.31	1.89	0.71	0.78	Oldham
B35, C35	1/2		J41-F50-F50	1.63	2.00	0.60	0.66
B60	3/4	3/16 keyway	J50-C75-K75	1.97	2.35	0.72	0.79
		2 flats at 90 degrees	J50-C75-F75
C70	3/4	3/16 keyway	J50-K75-K75	1.97	2.35	0.72	0.79
		2 flats at 90 degrees	J50-K75-F75
B115, B150 B220,C130	3/4	3/16 keyway	J57-K75-K75	2.25	3.07	0.83	0.91
	7/8		J57-K75-K87
KB (large brakes) & KC (large clutches)	View large series of couplings.

All dimensions are in inches.
Maximum shaft penetration for beam-type couplings = centerline of coupling.

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