Description
Straight Index Plungers
Straight Index Plungers have an entirely cylindrical plunger with a slight radius at the tip, used together with a straight bushing. A straight plunger provides slightly greater positional accuracy. Rotary-cam action completely retracts the plunger when the handle is rotated 180. Cam surfaces are hardened steel. Made in USA.
The standard-mount configuration has a whistle notch on the Index Plunger for orientation with a setscrew.
Installation
Index plungers are manufactured with precision working tolerances and are designed for very light interference-fit installations to avoid binding of the mechanism. Setscrews with nylon tip inserts are recommended. Setscrews should firmly contact the whistle notch, but not exert significant force.
Material
| Item | Material | Heat Treat | Finish | DFARS | RoHS |
| Body,Plunger and Cam | 1144 Steel | Heat Treated Rc 50-55 | – | Yes | Yes |
| Center Shaft | 1144 Steel | – | – | Yes | Yes |
| Spring | Music Wire | – | – | Yes | Yes |
| Ball Knob | Black phenolic plastic with molded-in brass insert | – | – | Yes | Yes |
| Bushing | 1144 Steel | Heat Treated | – | Yes | Yes |
Parts Specification
| Plunger Diameter (inch) | A Diameter Nominal (inch) | A Diameter Actual (inch) | B (inch) | D (inch) | E (inch) | F (inch) | G (inch) | H (inch) | J (inch) | L (inch) | M Diameter (inch) |
| “ | 1-1/8″ | 1.1268 / 1.1265 (Ground)” | 2″ | 1-1/2″ | 3-1/2″ | 9/16″ | 3/8″ | 13/32″ | 1/8″ | 1/8″ | 1-1/4″ |
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