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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 (mm) | A Diameter Nominal (mm) | A Diameter Actual (mm) | B (mm) | D (mm) | E (mm) | F (mm) | G (mm) | H (mm) | J (mm) | L (mm) | M Diameter (mm) |
| 20 mm | 30 mm | 30.046 / 30.038 (Ground) mm | 51 mm | 38 mm | 89 mm | 14 mm | 9.5 mm | 10.5 mm | 3.2 mm | 3 mm | 32 mm |
Warning:
This Product Can Expose You To Materials And/Or Chemicals Including Arsenic, Lead, And Other Materials And/Or Chemicals Which Are Known To The State Of California To Cause Cancer And/Or Reproductive Harm. For more information, visit www.P65Warnings.ca.gov