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Index Plungers Knob Type

Product Overview of Indexing Plungers

♢ Indexing Plungers is also known as indexing pin or indexing plunger. The pin can be pulled out or inserted by the operation knob for easy and fast positioning and for fixing mechanical elements of the workpiece.
  Suitable for fixture indexing, positioning, stop limit and other occasions.

Product Feature of Indexing Plungers

♢ This series is a compact Indexing Plungers with coarse threads and a length 1/3 shorter than that of the common knob, which is suitable for installation in narrow environments. It is not recommended to use on a vibrating or rotatingworkbench.
♢ The operation method is generally divided into two types: reset and self-locking type.

Dimensional Drawing of Indexing Plungers

Dimensional Drawing

Specifications Overview of Indexing Plungers

Type of Indexing PlungersThreadKnobBodyPinSpring
Reset typeSelf-locking typeIndexing Plungers MaterialIndexing Plungers MaterialIndexing Plungers Surface TreatmentIndexing Plungers MaterialIndexing Plungers Material
C-PMXSBC-PMXYSBCoarsePA6 Plastics1215Black oxide coatedSUS303SUS304
C-PMXSMC-PMXYSMNickel Plated

Usage Method of Indexing Plungers

How to operate the reset type and self-locking type
• Reset type of Indexing Plungers
1. The front end is usually protruding.
2. The front end retracts when the knob is pulled out.
3. If the Indexing Plungers is released, the front end will return to the protruding state through the action of the built-in spring force.
How to operate the reset type
• Self-locking type of Indexing Plungers
1. The front end is usually protruding.
2. The front end retracts when the knob is pulled out.
3. If the front end is rotated by 90° while maintaining the pull-out state, the retraction state of the front end can be locked.
4. To release the locked state, simply rotate 90° while maintaining the pulled-out state.
5. If the Indexing Plungers is released, the front end will return to the protruding state through the action of the built-in spring force.
How to operate the reset type

Example Use of Indexing Plungers

Example of Use
Indexing Plungers is used to prevent malfunction in the example of use of sheet metal bending fixture.

Specification Table of Indexing Plungers

Part Number of Indexing PlungersThread Pitch
(Coarse)
DD1SBLL1SWRLoad (N)
TypeMmin.max.
Reset type
C-PMXSB
C-PMXSM
Self-locking type
C-PMXYSB
C-PMXYSM
81.252014.5552551332.56.5
101.5241966317173.549.5
kgf=N×0.101972

Specification Table
Part NumberThread Pitch
(Coarse)
DD1SBLL1SWRLoad (N)
TypeMmin.max.
Reset type
C-PMXSB
C-PMXSM
Self-locking type
C-PMXYSB
C-PMXYSM
81.252014.5552551332.56.5
101.5241966317173.549.5
kgf=N×0.101972

Part Number 

CAD Data download and 3D preview are not available because the part number has not yet been determined.

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  • Please confirm the part number from "Specification / Dimension"on the left side, and then perform the CAD Data Download / 3D Preview operation.
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Part Number
C-PMXSB8
C-PMXSB10
C-PMXSM8
C-PMXSM10
C-PMXYSB8
C-PMXYSB10
C-PMXYSM8
C-PMXYSM10
Part NumberMinimum order quantityVolume DiscountDays to ShipScrew Dia. M
(mm)
Tip Outer Dia. B
(Ø)
Stroke (S)
(mm)
Locking Mechanism Length L
(mm)
Main Body Surface Treatment
1 Piece(s)Available Same day 855[Returning] Reset Type25Black Oxide
1 Piece(s)Available Same day 1066[Returning] Reset Type31Black Oxide
1 Piece(s)Available Same day 855[Returning] Reset Type25Electroless Nickel Plating
1 Piece(s)Available Same day 1066[Returning] Reset Type31Electroless Nickel Plating
1 Piece(s)Available Same day 855[Nose Lock] Self-locking Type25Black Oxide
1 Piece(s)Available Same day 1066[Nose Lock] Self-locking Type31Black Oxide
1 Piece(s)Available Same day 855[Nose Lock] Self-locking Type25Electroless Nickel Plating
1 Piece(s)Available Same day 1066[Nose Lock] Self-locking Type31Electroless Nickel Plating

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Basic Information

Type Standard Type Mounting Method Screw-In Body Material Steel
Overall Length Short Pin Material Stainless Steel All Stainless Not Compliant
Pin Surface Treatment Not Provided Knob Provided

Frequently asked question (FAQ)

Question: Can the knob plunger withstand radial force?
Answer: The knob plunger is not recommended to bear radial cutting force, as it is prone to product damage and fracture, and generally, it can only bear axial force.
Question: What role does a ball plunger play?
Answer: It is a mechanical element part that can easily and quickly locate and fix the workpiece by operating the knob or the handle to pull out or insert the pin.
Early knob plungers were mainly used for parts used in the angular positioning of indexing devices.
In recent years, knob plunger has been more widely used, and become an indispensable mechanical element part of equipment and devices.
Question: What are the characteristics of fine thread type compared to coarse thread type?
Answer: Fine thread type is suitable for fine-tuning the ejection amount of the pin. More precise positioning is more possible compared to coarse thread type.
Question: What is the difference between reset type and self-locking type knob plungers?
Answer: The self-locking type can lock the front end by turning 90° after pulling out the knob while keeping the pulled state and turning 90° to release the lock.

Check other FAQ (1 items) Hide

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