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GN 411.2 Centering Bore Clamps Steel, with Spherical Balls or Non-Marring Clamping Segments

Type: K - With clamping balls

Standard Sheet GN 411.2 Print This Page Function GN 411.2 ISO Fundamental Tolerances

Product description

With centering bore clamps GN 411.2, workpieces can be centrally positioned and clamped from the inside of the bore.

They offer the following advantages:

Precise self centering
Repetitive accuracy: ± 0.025 mm
Accuracy of concentricity: ± 0.05 mm
Solid and stable clamping through either 3 or 6 contact points on the workpiece
Clamping of workpieces with uneven or irregular surface (such as castings)
Distortion free clamping
Reduced height
Can be mounted in any position
Large adjustable range
Draw-down clamping

Specification

Clamp body
Steel

Hardened
Blackened finish

Clamping balls / segments

Hardened
Plain finish, ground

RoHS

On request

Centering bore clamps GN 411.3
operable from the opposite side respectively for hydraulic or pneumatic operation

Centering bore clamps with 2 clamping elements for clamping tubes

GN 411.2 Steel Centering Bore Clamps, with Spherical Balls or Non-Marring Clamping Segments sketch

Hide technical drawing

Part Options / Table

Type

K	With clamping balls
S	With clamping segments

Part Number K - With clamping balls	Part Number S - With clamping segments	d₁	d₂ Clamping Ø	d₃	d₄	d₅	d₆	h₁	h₂	k ±0.004	l₁	l₂	l₃	t min.	w₁	w₂	Number of clamping elements	Max. clamping force F


411.2-11.7-K		0.46	0.56	0.39	M 4	0.17	0.06	0.14	0.10	0.138 ±0.004	0.15	0.34	0.25	0.16	0.03	0.05	0.12	112 lbf (0.5 kN)
411.2-14.5-K	411.2-14.5-S	0.57	0.73	0.47	M 4	0.17	0.08	0.22	0.14	0.177 ±0.004	0.39	0.56	0.20	0.24	0.05	0.09	0.12	787 lbf (3.5 kN)
411.2-18.5-K	411.2-18.5-S	0.73	0.89	0.59	M 5	0.21	0.10	0.30	0.12	0.217 ±0.004	0.45	0.65	0.24	0.28	0.05	0.09	0.12	899 lbf (4 kN)
411.2-22.5-K	411.2-22.5-S	0.89	1.04	0.79	M 6	0.25	0.12	0.24	0.16	0.276 ±0.004	0.56	0.77	0.35	0.31	0.05	0.09	0.12	1012 lbf (4.5 kN)
411.2-26.5-K	411.2-26.5-S	1.04	1.20	0.79	M 6	0.25	0.12	0.24	0.18	0.276 ±0.004	0.56	0.78	0.35	0.31	0.05	0.09	0.12	1012 lbf (4.5 kN)
411.2-30.5-K	411.2-30.5-S	1.20	1.52	0.98	M 6	0.25	0.16	0.28	0.18	0.354 ±0.004	0.56	0.91	0.35	0.31	0.09	0.18	0.12	1012 lbf (4.5 kN)
411.2-38.5-K	411.2-38.5-S	1.52	1.83	1.18	M 8	0.33	0.16	0.30	0.18	0.433 ±0.004	0.71	1.07	0.47	0.39	0.09	0.18	0.24	1461 lbf (6.5 kN)
411.2-46.5-K	411.2-46.5-S	1.83	2.15	1.18	M 8	0.33	0.16	0.30	0.18	0.433 ±0.004	0.71	1.07	0.47	0.39	0.09	0.18	0.24	1461 lbf (6.5 kN)
411.2-54.5-K	411.2-54.5-S	2.15	2.78	1.77	M 10	0.41	0.20	0.35	0.22	0.591 ±0.004	0.93	1.60	0.55	0.47	0.19	0.36	0.24	1798 lbf (8 kN)
411.2-70.5-K	411.2-70.5-S	2.78	3.41	2.36	M 12	0.51	0.20	0.39	0.22	0.669 ±0.004	1.11	1.81	0.67	0.59	0.19	0.36	0.24	2248 lbf (10 kN)
411.2-86.5-K	411.2-86.5-S	3.41	4.04	2.36	M 16	0.67	0.20	0.39	0.22	0.984 ±0.004	1.19	2.02	0.83	0.59	0.19	0.36	0.24	2810 lbf (12.5 kN)

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Metric

Dimensions in: Inch (change to Metric)

d₁	d₂ Clamping Ø	d₃	d₄	d₅	d₆	h₁	h₂	k ±0.004	l₁	l₂	l₃	t min.	w₁	w₂	Number of clamping elements	Max. clamping force F

0.46*	0.56	0.39	M 4	0.17	0.06	0.14	0.10	0.138	0.15	0.34	0.25	0.16	0.03	0.05	0.12	112 lbf (0.5 kN)
0.57	0.73	0.47	M 4	0.17	0.08	0.22	0.14	0.177	0.39	0.56	0.20	0.24	0.05	0.09	0.12	787 lbf (3.5 kN)
0.73	0.89	0.59	M 5	0.21	0.10	0.30	0.12	0.217	0.45	0.65	0.24	0.28	0.05	0.09	0.12	899 lbf (4 kN)
0.89	1.04	0.79	M 6	0.25	0.12	0.24	0.16	0.276	0.56	0.77	0.35	0.31	0.05	0.09	0.12	1012 lbf (4.5 kN)
1.04	1.20	0.79	M 6	0.25	0.12	0.24	0.18	0.276	0.56	0.78	0.35	0.31	0.05	0.09	0.12	1012 lbf (4.5 kN)
1.20	1.52	0.98	M 6	0.25	0.16	0.28	0.18	0.354	0.56	0.91	0.35	0.31	0.09	0.18	0.12	1012 lbf (4.5 kN)
1.52	1.83	1.18	M 8	0.33	0.16	0.30	0.18	0.433	0.71	1.07	0.47	0.39	0.09	0.18	0.24	1461 lbf (6.5 kN)
1.83	2.15	1.18	M 8	0.33	0.16	0.30	0.18	0.433	0.71	1.07	0.47	0.39	0.09	0.18	0.24	1461 lbf (6.5 kN)
2.15	2.78	1.77	M 10	0.41	0.20	0.35	0.22	0.591	0.93	1.60	0.55	0.47	0.19	0.36	0.24	1798 lbf (8 kN)
2.78	3.41	2.36	M 12	0.51	0.20	0.39	0.22	0.669	1.11	1.81	0.67	0.59	0.19	0.36	0.24	2248 lbf (10 kN)
3.41	4.04	2.36	M 16	0.67	0.20	0.39	0.22	0.984	1.19	2.02	0.83	0.59	0.19	0.36	0.24	2810 lbf (12.5 kN)

*This size is only available as type K

Build & Price

Dimensions

Operating Principle

A circular ball cage containing 3 or 6 balls is forced outwards over an accurately guided cone by means of a screw which, through the exerted thrust, will enlarge the outside diameter of the circular ball cage. This in turn will lead to a firm contact between the centring clamp and bore of the workpiece.

Type K (with balls) is used for clamping applications where minor ball marks at the contact points with the workpiece are acceptable. Type S (with clamping segments) is used in such cases where marks at the clamping points on the workpiece would be acceptable.

Selected Part

Part Number

Total (net)

Mex$11,238.00

Available within 2 weeks

Quantity

Please note our quantity discounts (Mexican Pesos).

Min	Max	Price
1	4	Mex$11,238.00
5	9	Mex$10,301.50
10	24	Mex$9,365.00
≥ 25		Mex$8,428.50

Prop 65: Not compliant

WARNING:
Cancer and Reproductive Harm - www.P65Warnings.ca.gov

RoHS: Compliant

This article is RoHS-compliant in application of Annex III., which means it complies with EU Directive 2011/65/EU, including extension (2015/863/EU), for restricting the use of certain hazardous substances in electrical and electronic devices. The Directive regulates the use of hazardous substances in devices and components. The implementation in national law is summarily described with RoHS(Restriction of (the use of certain) hazardous substances)).

Weight: 0.026 lbs

If weight is not listed, please contact our Sales Department for additional information regarding weight.
Phone: +52(81)2721-4021

All Prices are in Mexican Pesos. Taxes Not Included.