Indexing Plungers

Ruland indexing plungers are spring-loaded mechanisms designed to lock devices for adjustable positioning. They are commonly used in industrial equipment for positioning and holding, in gym equipment for height adjustments, in machine guard doors to prevent them from being opened accidentally, and much more. Indexing plungers are comprised of a plastic knob, a hardened steel plunger pin, an internal spring, a black oxide steel threaded body, and a black oxide steel lock nut. The components in the precision indexing plunger use the force in the spring to apply pressure allowing the plunger pin to remain nested in a hole or other receptacle. Thus, two or more elements of equipment can be aligned or fixed into a determined relative position. Ruland indexing plungers feature a pull knob that partially encloses the top of the plunger body, allowing less debris to enter the mechanism. Options with lock-out are available for applications where the plunger pin must not protrude continually. Indexing plungers are offered in three inch sizes: 3/8” – 16 TPI, ½” – 13 TPI, and 5/8” – 11 TPI and three metric sizes: M10x1.0, M12X1.5, and M16X1.5.

About

With Lock-Out

Indexing plungers with the lock-out feature are used in applications where the plunger must not protrude continually. To achieve this, the knob is rotated by 90° after being retracted. The head of the plunger body is provided with a suitable notch in opposite positions to prevent the plunger from accidentally slipping back into its forward position due to error or vibration. Lock-out precision indexing plungers are available with or without locknut. The locknut type is commonly used in high leverage applications where the indexing plunger needs to stay locked in a fixed position.

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With Lock-Out
No Lock-Out

Precision indexing plungers without the lock-out feature are used in applications where the plunger does not have to stay retracted. The non-locking indexing plungers are often used in the medical and fitness industries for adjusting seat heights but they are most commonly used in industrial equipment for positioning and holding. We offer a version with a locknut for applications where the plunger needs to stay locked in a fixed position. 

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No Lock-Out

Products

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  1. Ruland IPLN-10-12-5/8X11-F - Indexing Plunger With Lockout
    IPLN-10-12-5/8X11-F
    In stock
    Ruland Indexing Plunger, Lock-Out, Thread 5/8x11, Pin Diameter 10mm, Knob Diameter 28mm, L 58mm, Steel
  2. Ruland IPLN-10-12-M16X1.5-F - Indexing Plunger With Lockout
    IPLN-10-12-M16X1.5-F
    In stock
    Ruland Indexing Plunger, Lock-Out, Thread M16x1.5, Pin Diameter 10mm, Knob Diameter 28mm, L 58mm, Steel
  3. Ruland IPLN-5-5-3/8X16-F - Indexing Plunger With Lockout
    IPLN-5-5-3/8X16-F
    In stock
    Ruland Indexing Plunger, Lock-Out, Thread 3/8x16, Pin Diameter 5mm, Knob Diameter 19mm, L 40mm, Steel
  4. Ruland IPLN-5-5-M10X1-F - Indexing Plunger With Lockout
    IPLN-5-5-M10X1-F
    In stock
    Ruland Indexing Plunger, Lock-Out, Thread M10x1.0, Pin Diameter 5mm, Knob Diameter 19mm, L 40mm, Steel
  5. Ruland IPLN-6-6-1/2X13-F - Indexing Plunger With Lockout
    IPLN-6-6-1/2X13-F
    In stock
    Ruland Indexing Plunger, Lock-Out, Thread 1/2x13, Pin Diameter 6mm, Knob Diameter 23mm, L 48mm, Steel
  6. Ruland IPLN-6-6-M12X1.5-F - Indexing Plunger With Lockout
    IPLN-6-6-M12X1.5-F
    In stock
    Ruland Indexing Plunger, Lock-Out, Thread M12x1.5, Pin Diameter 6mm, Knob Diameter 23mm, L 48mm, Steel
  7. Ruland IPLW-10-12-5/8X11-F - Indexing Plunger With Lockout, With Nut
    IPLW-10-12-5/8X11-F
    In stock
    Ruland Indexing Plunger, Lock-Out, With Locknut, Thread 5/8x11, Pin Diameter 10mm, Knob Diameter 28mm, L 58mm, Steel
  8. Ruland IPLW-10-12-M16X1.5-F - Indexing Plunger With Lockout, With Nut
    IPLW-10-12-M16X1.5-F
    In stock
    Ruland Indexing Plunger, Lock-Out, With Locknut, Thread M16x1.5, Pin Diameter 10mm, Knob Diameter 28mm, L 58mm, Steel
  9. Ruland IPLW-5-5-3/8X16-F - Indexing Plunger With Lockout, With Nut
    IPLW-5-5-3/8X16-F
    In stock
    Ruland Indexing Plunger, Lock-Out, With Locknut, Thread 3/8x16, Pin Diameter 5mm, Knob Diameter 19mm, L 40mm, Steel
  10. Ruland IPLW-5-5-M10X1-F - Indexing Plunger With Lockout, With Nut
    IPLW-5-5-M10X1-F
    In stock
    Ruland Indexing Plunger, Lock-Out, With Locknut, Thread M10x1.0, Pin Diameter 5mm, Knob Diameter 19mm, L 40mm, Steel
  11. Ruland IPLW-6-6-1/2X13-F - Indexing Plunger With Lockout, With Nut
    IPLW-6-6-1/2X13-F
    In stock
    Ruland Indexing Plunger, Lock-Out, With Locknut, Thread 1/2x13, Pin Diameter 6mm, Knob Diameter 23mm, L 48mm, Steel
  12. Ruland IPLW-6-6-M12X1.5-F - Indexing Plunger With Lockout, With Nut
    IPLW-6-6-M12X1.5-F
    In stock
    Ruland Indexing Plunger, Lock-Out, With Locknut, Thread M12x1.5, Pin Diameter 6mm, Knob Diameter 23mm, L 48mm, Steel
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