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GN 721 - GN 721.1
Locking indexing plungers
With or without rest in retracted position, steel
Main specifications
Threaded body
Black-oxide steel.
Plunger
Turned and nitrided steel
Suggested tolerance for plunger insertion hole = H7.
Spring
AISI 301 stainless steel.
Locking nut
Black-oxide steel.
Lever
Black-oxide steel.
Lever cover
High-resilience polyamide based (PA) technopolymer, black colour, matte finish.
Standard executions
- GN 721: without rest position.
- GN 721.1: with a stop notch in the retracted position.
Version index:
- RA: plunger retracted position by anti-clockwise rotation, without locking nut.
- RAK: plunger retracted position by anti-clockwise rotation, with locking nut.
- LA: plunger retracted position by clockwise rotation, without locking nut.
- LAK: plunger retracted position by clockwise rotation, with locking nut.
- RB: plunger retracted position by anti-clockwise rotation, without locking nut, with lever cover.
- RBK: plunger retracted position by anti-clockwise rotation, with locking nut, with lever cover.
- LB: plunger retracted position by clockwise rotation, without locking nut, with lever cover.
- LBK: plunger retracted position by clockwise rotation, with locking nut, with lever cover.
General information
Features and applications
GN 721 and GN 721.1 lever indexing plungers are used when the plunger must be retracted quickly. By rotating the lifting lever by 180°, the plunger is retracted.
In GN 721.1 execution the lever is kept in this position by a notch.
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