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.

Notice of End of Sales for Economy Series Pneumatic Equipment Category. More information.

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C-SPMXSM8

Screw Dia. M Tip Outer Dia. B Stroke (S) Locking Mechanism Length L 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
type
- C-SPMXSM
- C-SPMXYSM
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

Same day
Clear

Specify Alterations

Index Plungers Knob Type, Stainless Steel (Part Number)

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Volume Discount

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Brand :

MiSUMi Economy

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Total Price :

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CAD Download

Economy Index Plungers Knob Type, Stainless Steel

Stainless Steel Compact Reliable

- Corrosion-resistant material ensures long-lasting performance in various environments.

- Shorter length and coarse threads make it ideal for tight spaces.

- Choose between reset and self-locking mechanisms for flexibility.

- Simple pull or push of the knob allows for rapid positioning.

- Enjoy premium stainless steel construction at an economical price.

Economy Fixed Side Round Lead Screw Support Units

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.
Indexing Plungers is 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.
The stainless steel material is corrosion-resistant, and it is not recommended to use on a vibrating or rotating workbench.
♢ The operation method of Indexing Plungers 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	Thread	Material	Material	Material	Material
C-SPMXSM	C-SMXYSM	Coarse	SUS303	SUS303	SUS303	SUS304

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-SPMXSM	Self-locking type C-SPMXYSM	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-SPMXSM	Self-locking type C-SPMXYSM	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; 60; 90

Part Number
C-SPMXSM8
C-SPMXSM10
C-SPMXYSM8
C-SPMXYSM10

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)
₹ 388.00	1 Piece(s)	Available	Same day	10	8	5	5	[Returning] Reset Type	25
₹ 458.00	1 Piece(s)	Available	Same day	10	10	6	6	[Returning] Reset Type	31
₹ 691.00	1 Piece(s)	Available	Same day	10	8	5	5	[Nose Lock] Self-locking Type	25
₹ 785.00	1 Piece(s)	Available	Same day	10	10	6	6	[Nose Lock] Self-locking Type	31

Basic Information

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