Technical
datasheet
Steel / Stainless Steel, Operating Lever Horizontal, with Lock Mechanism, with Vertical Mounting Base, with Extended Clamping Arm
|
Catalogue
|
Size
|
Fh in N
|
a ≈
|
b1
|
b2
|
b3
|
b4
|
d1
|
d2
|
h1 ≈
|
h2
|
h3
|
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
GN 820.4-75-NL
|
75
|
900
|
20
|
28
|
8
|
4
|
5.3
|
M 5
|
4.5
|
45.5
|
29
|
11
|
|
GN 820.4-130-NL
|
130
|
1000
|
32
|
36
|
10
|
5
|
6.3
|
M 6
|
5.6
|
64.5
|
44
|
16
|
|
GN 820.4-230-NL
|
230
|
1700
|
37
|
44
|
12
|
6
|
8.5
|
M 8
|
6.6
|
75.5
|
51
|
18
|
|
GN 820.4-355-NL
|
355
|
1800
|
58
|
60
|
14
|
7
|
10.5
|
M 10
|
8.6
|
102
|
69.5
|
22
|
|
GN 820.4-455-NL
|
455
|
3200
|
65
|
70
|
18
|
10
|
12.5
|
M 12
|
8.7
|
120
|
80.5
|
26
|
Case-hardened steel C10
Zinc plated, blue passivated
Bearing pins tempered
Bearing rivets (for size 355 and up) case-hardened
All moving parts
Lubricated with special grease
Hand grip
High quality, oil resistant, red plastic
Clamping screw GN 708.1, type A
Steel, zinc plated
Rubber tip 85 Shore A
Stainless steel AISI 304
All moving parts
Lubricated with special grease
Hand grip
High quality, oil resistant, red plastic
Clamping screw GN 708.1, type A)
Stainless steel, AISI 304
Rubber tip 85 Shore A
Toggle clamps GN 820.4 have a safety function whereby, during closing, a spring loaded safety hook latch ensures a secure locking connection. It prevents the inadvertent unlocking of the clamp due to vibrations or an accidental attempt of loosening / opening of the clamp. To open and release the clamp, pull up on the finger grip to disengage the safety hook latch mechanism (one hand operation).
They work according to the toggle principle: lever and clamping bar move in the opposite direction. They require less space for the clamping action.
Toggle clamps in the U-bar version with two flanged washers (type NL) can accommodate an application specific clamping screw. A clamping screw with neoprene rubber tip is also included for type NLC.
Toggle clamps in the type PL version can either be utilized by welding the clasp which can then accommodate an application specific hold-down fastener component, or by utilizing the bar in conjunction with the GN 809 holders for clamping screws to hold the work piece in place.
Toggle clamps in the U-bar version with two flanged washers (type VL) can accommodate an application specific clamping screw. A spindle assembly with neoprene rubber tip is also included for type VLC.
