Home Levelling Elements Levelling feet GN 21

GN 21

Leveling Feet

Stainless Steel, with Turned Base Plate, without Mounting Holes

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GN 21-S/SK

Leveling Feet

With / without nut, external hex at the bottom

GN 21-T/TK

Leveling Feet

With / without nut, wrench flat at the bottom

GN 21-U/UK

Leveling Feet

With / without nut, hex socket at the top and wrench flat at the bottom

GN 21-V/VK

Leveling Feet

With / without nut, external hex at the top and wrench flat at the bottom

GN 21-W

Leveling Feet

With adjustable sleeve, covered thread and wrench flat at the bottom

GN 21-X

Leveling Feet

External hex with internal thread

Description

Specification

Type (Foot plate)

Type D0: Fine turned, without rubber underlay

Type D1: Fine turned, with rubber underlay, inlaid, black

Version of the screw

Version S: Without nut, external hex at the bottom

Version SK: With nut, external hex at the bottom

Version T: Without nut, wrench flat at the bottom

Version TK: With nut, wrench flat at the bottom

Version U: Without nut, hex socket at the top and wrench flat at the bottom

Version UK: With nut, hex socket at the top and wrench flat at the bottom

Version V : Without nut, external hex at the top and wrench flat at the bottom

Version VK: With nut, external hex at the top and wrench flat at the bottom

Version W: With adjustable sleeve, covered thread and wrench flat at the bottom

Version X: External hex with internal thread

Base plate

Stainless Steel AISI 304

Threaded stem

Stainless Steel AISI 303

Hex nut ISO 4032

Stainless Steel AISI 304

Rubber underlay, inlaid

NBR (Perbunan^®), 70 Shore A

Information

Leveling feet GN 21 will be delivered mounted and are not removable.

Technical information

Plastic Characteristics

Stainless Steel Characteristics

Load Rating of Leveling Feet

d1	d2	Static load in kN	-	-	-	-
-	-	Versions of threaded stem	-	-	-	-
-	-	S / SK	T / TK and U / UK	V / VK	W	X
80	M 8	6	-	-	-	17
80	M 10	11	-	-	-	17
80	M 12	16	-	-	-	17
80	M 16	-	17	21	25	17
80	M 20	-	28	35	35	28
80	M 24	-	46	52	52	-
100	M 8	6	-	-	-	17
100	M 10	11	-	-	-	17
100	M 12	16	-	-	-	17
100	M 16	-	17	21	25	17
100	M 20	-	28	35	35	28
100	M 24	-	46	52	52	-
120	M 20	-	28	-	-	28
120	M 24	-	46	-	-	-
120	M 30	-	43	-	-	-

At a spindle thread size M 10 and higher, the static load of the leveling feet GN 21 is limited owing to the permissible contact pressure of the adjustment spindle acting on the base plate (at a spindle strength ≥ 500 N/mm²). The values given in the table (valid for type D0 without rubber underlay) assume a clean pressure load perpendicular to the base plate. Bending and buckling stress which often occurs in practice results in a lower load-bearing capacity of the adjustment spindle and may have to be taken into account.

The details given on strength are non-binding guide values without any liability. In general, they do not constitute a warranty or quality.

The user must determine from case to case if a product is suitable for the intended purpose or use. Environmental factors may influence the stated values.

Versions of threaded stem

Versions of threaded stem

S / SK: External hex at the bottom at d₂ M 8, M 10, M 12	T / TK: Wrench flat at the bottom at d₂ M 16, M 20, M 24, M 30	U / UK: Hex socket at the top and wrench flat at the bottom at d₂ M 16, M 20, M 24, M 30

V / VK: External hex at the top and wrench flat at the bottom at d₂ M 16, M 20, M 24	W: Covered thread and wrench flat at the bottom at d₂ M 16, M 20, M 24	X: External hex with internal thread at d₂ M 8, M 10, M 12, M 16, M 20

GN 21-X

	d₁	d₂	l₇	h₁	h₂	A/F ₇	t	Static load in kN
Code										Actions
GN 21-80-M8-34-D0-X	80	M 8	34	8.5	-	14	8	17	325
GN 21-80-M8-34-D1-X	80	M 8	34	-	2	14	8	17	347
GN 21-80-M10-37-D0-X	80	M 10	37	8.5	-	14	10	17	325
GN 21-80-M10-37-D1-X	80	M 10	37	-	2	14	10	17	347
GN 21-80-M12-40-D0-X	80	M 12	40	8.5	-	17	12	17	340
GN 21-80-M12-40-D1-X	80	M 12	40	-	2	17	12	17	362
GN 21-80-M16-46-D0-X	80	M 16	46	8.5	-	22	16	17	356
GN 21-80-M16-46-D1-X	80	M 16	46	-	2	22	16	17	378
GN 21-80-M20-54-D0-X	80	M 20	54	8.5	-	27	20	28	426
GN 21-80-M20-54-D1-X	80	M 20	54	-	2	27	20	28	448
GN 21-100-M8-35-D0-X	100	M 8	35	9	-	14	8	17	494
GN 21-100-M8-35-D1-X	100	M 8	35	-	3	14	8	17	537
GN 21-100-M10-38-D0-X	100	M 10	38	9	-	14	10	17	494
GN 21-100-M10-38-D1-X	100	M 10	38	-	3	14	10	17	537
GN 21-100-M12-41-D0-X	100	M 12	41	9	-	17	12	17	509
GN 21-100-M12-41-D1-X	100	M 12	41	-	3	17	12	17	552
GN 21-100-M16-47-D0-X	100	M 16	47	9	-	22	16	17	546
GN 21-100-M16-47-D1-X	100	M 16	47	-	3	22	16	17	589
GN 21-100-M20-55-D0-X	100	M 20	55	9	-	27	20	28	608
GN 21-100-M20-55-D1-X	100	M 20	55	-	3	27	20	28	651
GN 21-120-M20-59-D0-X	120	M 20	59	12	-	27	20	28	961
GN 21-120-M20-59-D1-X	120	M 20	59	-	3.5	27	20	28	1043

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