Can the knob plunger withstand radial force?

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.

What role does a ball plunger play?

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.

What are the characteristics of fine thread type compared to coarse thread type?

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.

What is the difference between reset type and self-locking type knob plungers?

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.

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Part Number Complete

C-PMXSB8

Screw Dia. M Tip Outer Dia. B Stroke (S) Locking Mechanism Length L Main Body Surface Treatment type CAD Days to Ship

Specification/Dimensions

Screw Dia. M(mm)
8

10
Clear
Tip Outer Dia. B(Ø)
5

6
Clear
Stroke (S)(mm)
5

6
Clear
Locking Mechanism
- Nose Lock
  - Self-locking Type
- Returning
  - Reset Type
Clear
Length L(mm)
25

31
Clear
Main Body Surface Treatment
- Black Oxide
- Electroless Nickel Plating
Clear
type
- C-PMXSB
- C-PMXSM
- C-PMXYSB
- C-PMXYSM
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

Same day
Clear

Specify Alterations

Index Plungers Knob Type

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Volume Discount

Check FAQ of this product (4 items)

Brand :

MiSUMi Economy

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Total Price :

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CAD Download

Economy Index Plungers Knob Type

Self-Locking Compact Reliable

- Shorter length, perfect for tight spaces.

- Secure your positioning with a reliable self-locking mechanism.

- Choose between reset and self-locking mechanisms to match your needs.

- Made with high-quality materials for long-lasting performance.

- Enjoy premium functionality at a more affordable price.

Economy Support Side Square Lead Screw (8-15mm Shaft Diameter)

MISUMI Standard

Cheaper Price

Product Variety

3D CAD
3D CAD Support

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

Specifications Overview of Indexing Plungers

Type of Indexing Plungers		Thread	Knob	Body		Pin	Spring
Reset type	Self-locking type		Material	Material	Surface Treatment	Material	Material
C-PMXSB	C-PMXYSB	Coarse	PA6 Plastics	1215	Black oxide coated	SUS303	SUS304
C-PMXSM	C-PMXYSM				Nickel 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.

• 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.

Example Use of Indexing Plungers

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 Plungers			Thread Pitch (Coarse)	D	D₁	S	B	L	L₁	SW	R	Load (N)
Type		M										min.	max.
Reset type C-PMXSB C-PMXSM	Self-locking type C-PMXYSB C-PMXYSM	8	1.25	20	14.5	5	5	25	5	13	3	2.5	6.5
		10	1.5	24	19	6	6	31	7	17	3.5	4	9.5
kgf=N×0.101972

Specification Table

Part Number			Thread Pitch (Coarse)	D	D₁	S	B	L	L₁	SW	R	Load (N)
Type		M										min.	max.
Reset type C-PMXSB C-PMXSM	Self-locking type C-PMXYSB C-PMXYSM	8	1.25	20	14.5	5	5	25	5	13	3	2.5	6.5
		10	1.5	24	19	6	6	31	7	17	3.5	4	9.5
kgf=N×0.101972

Part Number

Incomplete part number.
Please use left hand selections to complete a part number.

: 30; 45; 60

Part Number
C-PMXSB8
C-PMXSB10
C-PMXSM8
C-PMXSM10
C-PMXYSB8
C-PMXYSB10
C-PMXYSM8
C-PMXYSM10

Price	Minimum Order Qty.	Volume Discount	Days to Ship	RoHS	Screw Dia. M (mm)	Tip Outer Dia. B (Ø)	Stroke (S) (mm)	Locking Mechanism	Length L (mm)	Main Body Surface Treatment
₹ 300.30	1 Piece(s)	Available	Same day	10	8	5	5	[Returning] Reset Type	25	Black Oxide
₹ 287.00	1 Piece(s)	Available	Same day	10	10	6	6	[Returning] Reset Type	31	Black Oxide
₹ 273.00	1 Piece(s)	Available	Same day	10	8	5	5	[Returning] Reset Type	25	Electroless Nickel Plating
₹ 287.00	1 Piece(s)	Available	Same day	10	10	6	6	[Returning] Reset Type	31	Electroless Nickel Plating
₹ 287.00	1 Piece(s)	Available	Same day	10	8	5	5	[Nose Lock] Self-locking Type	25	Black Oxide
₹ 301.00	1 Piece(s)	Available	Same day	10	10	6	6	[Nose Lock] Self-locking Type	31	Black Oxide
₹ 287.00	1 Piece(s)	Available	Same day	10	8	5	5	[Nose Lock] Self-locking Type	25	Electroless Nickel Plating
₹ 301.00	1 Piece(s)	Available	Same day	10	10	6	6	[Nose Lock] Self-locking Type	31	Electroless Nickel Plating

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

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

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.

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