GN 722.1-STSpring Latches

Steel

Steel / Stainless Steel, for Welding

GN 722.1-ST

Catalogue
d1 Pin -0.05/-0.25
Bore
+0.1/+0.3
d1 Pin -0.05/-0.25
Bore
+0.2/+0.4
d2
s
l1
l2
l3
l4
A/F
Spring load
in N≈ initial
Spring load
in N≈ end
GN 722.1-8-20-A-ST
8
-
-
20
54
14
35
37
2.5
14
35
135
GN 722.1-10-20-A-ST
10
-
-
20
54
14
35
37
2.5
14
35
144
GN 722.1-12-20-A-ST
12
-
-
20
54
14
35
37
2.5
14
35
148
GN 722.1-14-20-A-ST
14
-
-
20
54
14
35
37
2.5
14
35
153
GN 722.1-16-30-A-ST
16
-
-
30
83
20
54
55
4
22
70
622
GN 722.1-20-30-A-ST
20
-
-
30
83
20
54
55
4
22
70
639

Types

  • Type A: Square, latch riveted, not removable
  • Type AU: Square, latch screwed, removable
  • Type R: Round, latch riveted, not removable
  • Type RU: Round, latch screwed, removable

Guide

  • Steel precision casting ST

Weldable

Blackened

  • Stainless steel precision casting AISI 316 A4

Weldable

Latch

  • Steel precision casting

Zinc plated, blue passivated (for ST)

  • Stainless steel precision casting AISI 316 (for A4)

Plunger pin

  • Steel, zinc plated, blue passivated (for ST)
  • Pressure spring

Stainless steel AISI 316 (for A4)

Pressure spring

Stainless steel AISI 316Ti

Countersunk screw

  • Steel, zinc plated (for ST)
  • Stainless steel (for A4)

With spring latches GN 722.1, the plunger pin is retracted over the curve of the guide by a 180° turn of the latch. The notch at the upper end of the curve causes the latch to be held in place if the plunger pin needs to be kept temporarily from protruding. The ST version is designed for applications in steel construction, whereas the stainless steel version A4 is suitable for use in particularly aggressive environments.

The dimensional tolerances between plunger pin and guide are selected so that the functional reliability is guaranteed even after welding, applying a corrosion protection layer or in case of contamination.

For fastening by welding, the unmounted type AU is particularly recommended to avoid changes to the microstructure of the material due to heating of the spring and plunger pin. In this case, the indexing plunger is assembled only after the surface treatment of the welded guide.

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