Coupler Size	Ref.	Peak Torque IN#	Misalignment			Flexural Stiffness
			Angular ± deg	Radial ± in.	Axial ± in.	Torsional IN#/rad	Angular lb./deg	Radial lb./0.001"	Axial lb./0.001"
20	530 & 537	17	2	0.0025	0.014	2788	0.231	0.656	0.101
	532 & 539	8	6	0.0200	0.040	1504	0.741	0.038	0.045
	534 & 541	22	1.3	0.0080	0.008	1991	0.741	0.047	0.041
26	530 & 536	28	2	0.0025	0.014	6682	0.285	1.358	0.033
	532 & 538	14	6	0.0200	0.040	3363	0.087	0.047	0.017
	534 & 540	35	1.3	0.0080	0.008	5443	0.341	0.083	0.037
34	530 & 536	66	2.5	0.0040	0.023	15400	0.301	1.295	0.038
	532 & 538	33	8	0.0400	0.075	8098	0.139	0.072	0.022
	534 & 540	83	1.5	0.0120	0.012	12878	0.444	0.132	0.159
41	530 & 536	88	2.5	0.0060	0.031	25490	0.355	0.822	0.075
	532 & 538	44	8	0.0470	0.098	1594	0.116	0.053	0.022
	534 & 540	110	1.8	0.0160	0.020	19870	0.516	0.110	0.041

Coupler Size	Set Screw Hubs	Clamp Hubs	ØD in.	L ±0.04 in.	L1 in.	ØB1,ØB2 max in.	Fasteners		Moment of inertia lb. in2 x 10-5	Mass lb.
							Screw	Torque IN#
	Coupler Ref
20	530.20	--	0.79	1.22	0.43	0.3150 (8mm)	M4	20.0	308	0.040
	532.20	--		1.78					342	0.042
	534.20	--		1.72					308	0.040
	--	537.20		1.22			4-40	20.6	308	0.035
	--	539.20		1.78					342	0.040
	--	541.20		1.72					308	0.037
26	530.26	--	1.02	1.48	0.55	0.4724 (12mm)	M5	40.8	1196	0.077
	532.26	--		2.14					1367	0.086
	534.26	--		2.09					1264	0.075
	--	536.26		1.48			M3	21.5	1128	0.075
	--	538.26		2.14					1298	0.084
	--	540.26		2.09					1196	0.073
34	530.34	--	1.34	1.57	0.55	0.6299 (16mm)	M5	40.8	3332	0.128
	532.34	--		2.24					3854	0.143
	534.34	--		2.23					3376	0.130
	--	536.34		1.57			M3	21.5	3161	0.123
	--	538.34		2.24					3684	0.138
	--	540.34		2.23					3205	0.126
41	530.41	--	1.61	1.96	0.71	0.7874 (20mm)	M6	67.3	8508	0.225
	532.41	--		2.81					9363	0.242
	534.41	--		2.78					8464	0.225
	--	536.41		1.96			M4	50.0	8167	0.218
	--	538.41		2.81					9089	0.236
	--	540.41		2.78					8122	0.218

Coupler Size	inch bores +0.0012/-0							metric bores +0.03/-0mm
	0.125	0.1875	0.250	0.375	0.500	0.625	0.7500	3	4	5	6	8	9	10	11	12	14	15	16	18	19	20
20
26
34
41
Bore Ref.	16	19	24	31	36	41	47	14	18	20	22	28	30	32	33	35	38	40	42	45	46	48
Corresponding bore adaptor			253		259					251		255		257					260			261