GN 817 Indexing plungers technical informations Body Black-oxide steel. Plunger Hardened ground steel. Suggested matching hole in H8 tolerance. Locking nut Black-oxide steel. Knurled knob High impact strength polyamide based (PA) technopolymer, black colour, matte finish (type B, BK). Resistant to solvents, oils, greases and other chemical agents. Knurled keyed knobHigh impact strength special technopolymer, black colour, matte finish (standard colour)or red RAL 3000 RT. Resistant to solvents, oils, greases and other chemical agents. Standard versions available - Type B: with knob, without locking nut. - Type BK: with knob and locking nut, ISO 8675. - Type C: with knob, without locking nut. - Type CK: with knob and locking nut, ISO 8675. Other standard executions available Threaded drive rod for combination with knobs on customer s request or to link the rod to an operating mechanism of the machine. - Version G: without locking nut. - Version GK: with locking nut. Features and applications GN 817 indexing plungers offer the following advantages: - two retracting strokes (l1) per plunger - identical small dimensions l for type B and C - retracting mechanism (type C) is shrouded in part - defined thread length by an undercut at the end of the thread. Version C with keyed knob is used in all the applications where the plunger must not protrude continually. In that case the knob is retracted and afterwards turned by 90. A notch is provided for the key to prevent the plunger from turning by error or vibration. Standard Elements Main dimensions Spring pressure in N Weight