E Series Expandable Shaft Coupling

Six short thin double tapered curved beams with two sets of three beams.
Light radial load for precision bearings.

Part No. Thru Bore	D	L	E	F	G	Clamp	Set
	Inch +.000 -.010	Inch ±.015	Inch ±.005 Note 2	Inch ±.015	Inch ±.005	(screw) Inch (torque) LB.IN. Note 4
ETOOO075	.745	1.00	.190	.550	.230	(18)	2-56 18
ETOOO100 ETSOO100	.995 .995	1.25 1.10	.230 .230	.550 .500	.230 .230	(18)	6-32 34
ETOOO125 ETSOO125	1.240 1.240	1.25 1.10	.290 .290	.550 .500	.230 .230	(18)	6-32 34
ETOOO150	1.485	1.25	.375	.500	.230	(41)	8-32 59

Part No. Thru Bore	A Shaft		B Bore		Static Torque	Torsional Stiffness	Inertia	Mass	Misalignment (see definitions)
	MM +.025 -.000 Notes 1,2,3	Inch +.001 -.000 Notes 1,2,3	MM +.025 -.000 Notes 1,2,3	Inch +.001 -.000 Notes 1,2,3	LB.IN Note 6	MIN / LB.IN Note 7	10-3 Ib.in.2 Note 9	Ib. Note 9	Angular Offset Degrees	Parallel Off Set Inch	Axial Motion Inch
ETOOO075	5	0.187							5°	0.015	±.015
	6	0.250	6	0.250
	8	0.312	8	0.312	28	8.5	2.179	0.025
ETOOO100 ETSOO100	5	0.187	5	0.187					5°	0.025 0.020	±.020 ±.020
	6	0.250	6	0.250
	8	0.312	8	0.312	42	6.8	9.927	0.066
	10	0.375	10	0.375
	12	0.437	12	0.437
ETOOO125 ETSOO125	6	0.250	6	0.250					5°	0.030 0.025	±.025 ±.025
	8	0.312	8	0.312
	10	0.375	10	0.375	63	3.00	24.26	0.102
	12	0.437	12	0.437
	14	0.500	14	0.500
ETOOO150	8	0.312	8	0.312					5°	0.030	±.030
	10	0.375	10	0.375
	12	0.437	12	0.437	70	1.33	50.08	0.142
	14	0.500	14	0.500
	16	0.625	16	0.625

All E and F couplings have an inside relief so the shafts will not touch the beams at the maximum misalignment ratings. Clamps are an integral part of the coupling and cannot be removed. All screws are hex socket, steel with black oxide finish. For stainless steel screws. Screw torques are the screw manu-facturers maximum ratings. Coupling material is 2024-T3.51. QQA225/6 aluminum with MIL-A8625 Type II black anodize. Static torque is the maximum coupling torque rating. Torque and torsional stiffness rating are at a maximum misalignment, not in a straight line. The expanding shaft torque holding force is dependent on the pilot hole finish and the expander screws tightness. Mass and inertia are calculated without the G10 insert. E & F have thru bores only. Test before you buy. McFarland Associates will furnish samples at no charge for all new OEM designs or for comparative evaluation.