GN 704 Quick Release Shaft Collars Aluminum

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Standard Sheet GN 704 Print This Page List of Shaft Collar Types ISO Fundamental Tolerances

Product description

Information

Unlike thrust bolts or clamping screws, GN 704 quick release shaft collars generate locking force on the shaft via an eccentric lever. This quick release design allows the collars to be set or adjusted rapidly and without tools. The aluminum design results in low mass inertia values.

The specified tightening torque of the screw is a recommended value with which the collar clamped to a shaft (with closed eccentric lever) is capable of reaching the specified axial load capacity. The details on the axial load capacity are non-binding guidance values and do not constitute a warranty of characteristics.

Keeping the friction surface of the eccentric lever slightly greased will help to prolong the useful service life.

Specification

Body
Aluminum, black anodized finish

Eccentric lever
Aluminum, yellow anodized finish

RoHS compliant

Technical drawing

GN 704 Aluminum Quick Release Shaft Collars sketch

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Part Options / Table

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Dimensions in: Inch | Metric

Part Number	d₁	d₂ Bore Recommended shaft tolerance -0.001	b	s	Tightening torque of the screw in Nm ≈	Axial load ≈ min.	max.

704-38-B.375	1.50	B 3/8	0.39	0.06	0.5	30.00 lbf (133.45 N)	60.00 lbf (266.89 N)
704-38-B.500	1.50	B 1/2	0.39	0.06	0.5	30.00 lbf (133.45 N)	60.00 lbf (266.89 N)
704-38-B.625	1.50	B 5/8	0.39	0.06	0.5	30.00 lbf (133.45 N)	60.00 lbf (266.89 N)
704-50-B.750	1.97	B 3/4	0.51	0.06	0.7	70.00 lbf (311.38 N)	100.00 lbf (444.82 N)
704-50-B1.00	1.97	B 1.00	0.51	0.06	0.7	70.00 lbf (311.38 N)	100.00 lbf (444.82 N)
704-50-B1.125	1.97	B 1 1/8	0.51	0.06	0.7	70.00 lbf (311.38 N)	100.00 lbf (444.82 N)
704-75-B1.25	2.95	B 1 1/4	0.59	0.06	1.5	105 lbf (467.06 N)	120 lbf (533.79 N)
704-75-B1.375	2.95	B 1 3/8	0.59	0.06	1.5	105 lbf (467.06 N)	120 lbf (533.79 N)
704-75-B1.50	2.95	B 1 1/2	0.59	0.06	1.5	105 lbf (467.06 N)	120 lbf (533.79 N)
704-38-B6	1.50	B 6	0.39	0.06	0.5	29.90 lbf (133 N)	60.02 lbf (267 N)
704-38-B8	1.50	B 8	0.39	0.06	0.5	29.90 lbf (133 N)	60.02 lbf (267 N)
704-38-B10	1.50	B 10	0.39	0.06	0.5	29.90 lbf (133 N)	60.02 lbf (267 N)
704-38-B12	1.50	B 12	0.39	0.06	0.5	29.90 lbf (133 N)	60.02 lbf (267 N)
704-38-B14	1.50	B 14	0.39	0.06	0.5	29.90 lbf (133 N)	60.02 lbf (267 N)
704-38-B15	1.50	B 15	0.39	0.06	0.5	29.90 lbf (133 N)	60.02 lbf (267 N)
704-38-B16	1.50	B 16	0.39	0.06	0.5	29.90 lbf (133 N)	60.02 lbf (267 N)
704-50-B20	1.97	B 20	0.51	0.06	0.7	69.92 lbf (311 N)	100 lbf (445 N)
704-50-B25	1.97	B 25	0.51	0.06	0.7	69.92 lbf (311 N)	100 lbf (445 N)
704-50-B28	1.97	B 28	0.51	0.06	0.7	69.92 lbf (311 N)	100 lbf (445 N)
704-50-B30	1.97	B 30	0.51	0.06	0.7	69.92 lbf (311 N)	100 lbf (445 N)
704-75-B32	2.95	B 32	0.59	0.06	1.5	105 lbf (467 N)	120 lbf (534 N)
704-75-B35	2.95	B 35	0.59	0.06	1.5	105 lbf (467 N)	120 lbf (534 N)
704-75-B38	2.95	B 38	0.59	0.06	1.5	105 lbf (467 N)	120 lbf (534 N)
704-100-B40	3.94	B 40	0.75	0.18	4.5	125 lbf (556 N)	195 lbf (867 N)
704-100-B42	3.94	B 42	0.75	0.18	4.5	125 lbf (556 N)	195 lbf (867 N)
704-100-B45	3.94	B 45	0.75	0.18	4.5	125 lbf (556 N)	195 lbf (867 N)
704-100-B48	3.94	B 48	0.75	0.18	4.5	125 lbf (556 N)	195 lbf (867 N)
704-100-B50	3.94	B 50	0.75	0.18	4.5	125 lbf (556 N)	195 lbf (867 N)
704-120-B54	4.72	B 54	0.75	0.18	4.5	200 lbf (890 N)	310 lbf (1379 N)
704-120-B55	4.72	B 55	0.75	0.18	4.5	200 lbf (890 N)	310 lbf (1379 N)
704-120-B60	4.72	B 60	0.75	0.18	4.5	200 lbf (890 N)	310 lbf (1379 N)
704-120-B65	4.72	B 65	0.75	0.18	4.5	200 lbf (890 N)	310 lbf (1379 N)
704-120-B70	4.72	B 70	0.75	0.18	4.5	200 lbf (890 N)	310 lbf (1379 N)
704-120-B75	4.72	B 75	0.75	0.18	4.5	200 lbf (890 N)	310 lbf (1379 N)

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Inch

Dimensions in: Inch (change to Metric)

d₁	d₂ Bore Recommended shaft tolerance -0.001			b	s	Tightening torque of the screw in Nm ≈	Axial load ≈ min.	max.

1.50	B 3/8	B 1/2	B 5/8	0.39	0.06	0.5	30.00 lbf (133.45 N)	60.00 lbf (266.89 N)
1.97	B 3/4	B 1.00	B 1 1/8	0.51	0.06	0.7	70.00 lbf (311.38 N)	100.00 lbf (444.82 N)
2.95	B 1 1/4	B 1 3/8	B 1 1/2	0.59	0.06	1.5	105 lbf (467.06 N)	120 lbf (533.79 N)

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Metric

Dimensions in: Inch | Metric

d₁	d₂ Bore Recommended shaft tolerance -0.001							b	s	Tightening torque of the screw in Nm ≈	Axial load ≈ min.	max.

1.50	B 6	B 8	B 10	B 12	B 14	B 15	B 16	0.39	0.06	0.5	29.90 lbf (133 N)	60.02 lbf (267 N)
1.97	B 20	B 25	B 28	B 30	-	-	-	0.51	0.06	0.7	69.92 lbf (311 N)	100 lbf (445 N)
2.95	B 32	B 35	B 38	-	-	-	-	0.59	0.06	1.5	105 lbf (467 N)	120 lbf (534 N)
3.94	B 40	B 42	B 45	B 48	B 50	-	-	0.75	0.18	4.5	125 lbf (556 N)	195 lbf (867 N)
4.72	B 54	B 55	B 60	B 65	B 70	B 75	-	0.75	0.18	4.5	200 lbf (890 N)	310 lbf (1379 N)