GN 721 - GN 721.1 Locking indexing plungers

With or without rest in retracted position, steel

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Technical specifications

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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.
GN 721-RA - Plunger retracted position by anti-clockwise rotation 
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.

GN 721-RA - Plunger retracted position by anti-clockwise rotation 
Elesa
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