GN 3663 Torque Limiting Knurled Knobs

Torque Limiting Knurled Knobs GN 3663 thumbnail

Torque Limiting Knurled Knobs GN 3663 sketch

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d₁	d₂ Thread			d₃ H7 Bore	d₅	d₆	h₁	h₂	t	Torque ±10 % in Nm

27	M 3	-	-	B 5	10	19	34	8,5	7	0,7	1	1,5
27	M 4	M 5	M 6	B 6	10	19	34	8,5	9	0,7	1	1,5
34	M 3	-	-	B 5	10	21	36,5	8,5	7	1	1,5	2,2
34	M 4	M 5	M 6	B 6	10	21	36,5	8,5	9	1	1,5	2,2
42	M 6	-	-	B 6	13,5	27	43	11	11	2	2,5	3,2
42	M 8	-	-	B 8	13,5	27	43	11	11	2	2,5	3,2
52	M 10	-	-	B 10	19	32	54	15,5	17	2,5	3	4
52	M 12	-	-	B 12	19	32	54	15,5	17	2,5	3	4
62	M 10	-	-	B 10	19	33	54	15,5	17	3	4	5,5
62	M 12	-	-	B 12	19	33	54	15,5	17	3	4	5,5

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Specification

Knob
Aluminum
Black anodized

Torque mechanism
Steel, hardened

Other parts
Steel, blackened

Cover cap
Plastic, light gray

Assembly video GN 3663

RoHS

On request

Other dimensions of bore inserts or threaded inserts analog GN 300

Other torques

Torque limiting turning counterclockwise or turning counterclockwise and clockwise

Information

Torque limiting knurled knobs GN 3663 are used when the manually applied torque is to be limited.

When turned clockwise, the torque mechanical system of the knurled knob triggers an „over-engagement“ as soon as the specified torque is reached. When turning counterclockwise, the mechanical system locks such that the torque is not limited. For example, when tightening, this will ensure that the maximum permissible torque is not exceeded. On the other hand, the torque necessary for releasing will always be transferred reliably.

How to order