Ball Plungers Stainless Steel, SUS Ball/POM Ball
Brand :
MISUMI
Caution
Product Description
- Economy series Ball Plungers Stainless Steel, SUS Ball/POM Ball.
- The series including of C-BMS, C-BSX, C-BSM C-NBSM and C-NBSX
- Main Body Material: Stainless Steel SUS304.
- Ball Material: Stainless Steel SUS304 and POM.
- Spring Material: Stainless Steel SUS304.
- Economy Ball Plunger Mounting Method: Screw (Hex).
- Coarse Thread Size (M): 2, 3, 4, 5, 6, 8, 10 12 and 16.
- Ball Plungers suitable for medical, electronic, and other equipment with high surface requirements.
- For MISUMI Economy series ball plungers without painting and coloring.
Economy Ball Plungers (Stainless Steel, SUS Ball/POM Ball)
Ball PlungersStainless SteelHigh Quality
- Wide Range Of Specifications For Different Needs
- High-Quality Stainless Steel Material
- Suitable For High Surface Requirement Equipment
- Simple Structure With Fixed Stroke
- Cost-Effective With Flexible Installation Options
MISUMI Standard
Cheaper Price
Product Variety
3D CAD Support
Product Overview
· This series of products are MISUMI Economy series Ball Plungers, made of stainless steel with standard internal hex coarse thread, produced domestically in China. It can be widely used in equipment and jigs with medium to low precision requirements.
· Ball Plungers, also known as detent screws, ball catch screws, positioning balls, spring-loaded balls, or steel ball set screws, rely on a spring to push out the front ball through a fixed stroke. They can be used for temporary positioning of workpieces, indexing adjustments, and more.
· Ball Plungers, also known as detent screws, ball catch screws, positioning balls, spring-loaded balls, or steel ball set screws, rely on a spring to push out the front ball through a fixed stroke. They can be used for temporary positioning of workpieces, indexing adjustments, and more.
Dimensional Drawing
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Product upgrade in progress: the hex socket is being deepened for easier disassembly. Products are shipped randomly. Both pre-upgrade and post-upgrade products are of good quality. Please be aware.
Material Specifications
| Type | Body | Ball | Spring | |||
 Material | Material |  Hardness | Material | |||
| Stainless Steel Ball Type | Ultra Light Load | C-BMS | SUS304 | SUS304 | — | SUS304 |
| Light Load | C-BSM | |||||
| Heavy Load | C-BSX | |||||
| E-LBSZF | SUS440C | 55 HRC or more | ||||
| Resin Ball Type | Ultra Light Load | E-LNBSS | SUS304 | POM | — | SUS304 |
| Light Load | C-NBSM | |||||
| Heavy Load | C-NBSX | |||||
| E-LNBSZ | ||||||
Specification Table
| Type | d | S | L | ℓ | B | Ultra Light Load (Stainless Steel Ball only) | Light Load | Heavy Load | |||||||
 Type |  Outer Diameter M(Coarse Thread) |  Package Quantity | Stainless Steel Ball | Resin Ball | Load (N) | Load (N) | Load (N) | ||||||||
| Ultra Light Load · Heavy Load | Light Load | min. | max. | min. | max. | min. | max. | ||||||||
| C-BMS (Stainless Steel Ball Type · Ultra Light Load) C-BSM (Stainless Steel Ball Type · Light Load) C-BSX (Stainless Steel Ball Type · Heavy Load) C-NBSM (Resin Ball Type · Light Load) C-NBSX (Resin Ball Type · Heavy Load) | 3 | 20P | 10P | 1.5 | 0.5 | 8 | 2 | 1.5 | — | — | 1.5 | 3 | 2 | 5 | |
| 4 | 2.38 | 0.8 | 10 | 3 | 2 | 1 | 3 | 2 | 5 | 5 | 20 | ||||
| 5 | 3 | 1 | 12 | 3 | 2.5 | 2 | 4 | 3 | 10 | 5 | 20 | ||||
| 6 | 10P | 3.5 | 1.2 | 12 | 4.5 | 3 | 3 | 5 | 5 | 15 | 10 | 30 | |||
| 8 | 5 | 1.6 | 1.7 | 16 | 5.5 | 4 | 4 | 7 | 7 | 20 | 15 | 50 | |||
| 10 | 6 | 2 | 2.1 | 5 | 5 | — | — | 9 | 25 | 20 | 60 | ||||
| 12 | 8 | 2.6 | 2.8 | 20 | 5.5 | 6 | — | — | 10 | 30 | 25 | 100 | |||
| 16 | 10 | 3.3 | 3.5 | 25 | 8 | 8 | — | — | 15 | 50 | 40 | 120 | |||
C-BMS Stainless Steel Ball, Ultra Light Load is limited to outer diameters of M4 to M8| Type | Package Quantity | d | S | L | ℓ | B | Ultra Light Load | Heavy Load | |||
| Type | Outer Diameter M (Coarse Thread) | Load (N) | Load (N) | ||||||||
| min. | max. | min. | max. | ||||||||
| (Metal Ball) E-LBSZF (Resin Ball) E-LNBSS E-LNBSZ | *3 | 10P | 1.5 | 0.4 | 7 | 1 | 1.5 | — | — | 1.5 | 3 |
| 4 | 2.38 | 0.8 | 9 | 1.5 | 2 | 0.5 | 2 | 4 | 10 | ||
| 5 | 3 | 1.1 | 12 | 3 | 2.5 | 1 | 3 | 5 | 20 | ||
| 6 | 3.5 | 1.2 | 13 | 4 | 3 | 1.5 | 5 | 10 | 30 | ||
| 8 | 5 | 1.7 | 16 | 5 | 4 | 2.5 | 6 | 12 | 40 | ||
| 10 | 6 | 2.2 | 16 | 5 | 5 | 3 | 8 | 18 | 50 | ||
| 12 | 8 | 2.7 | 20 | 6 | 6 | 4 | 10 | 20 | 60 | ||
| 16 | 5P | 10 | 3.7 | 25 | 8 | 8 | 6 | 15 | 30 | 100 | |
Product Features
· Compared to previous imported products, this series is manufactured domestically in China, resulting in significantly reduced costs. The unit price for bagged sales is even lower, with an average price reduction of 75%.
· Complete range of specifications to meet various size, length, and load requirements.
· Made entirely of stainless steel, with no painting or coating, making it suitable for equipment with higher surface requirements.
· No wrench slot at the front end; please use with a hex wrench.
· Simple ball plunger structure: the tip ball is pushed out by an internal spring for a fixed stroke, and can be released by overcoming the spring force and pressing in the ball.
· Flexible installation: Suitable for linear and rotary motion mechanisms that require positioning; can be installed with standard threads for easy assembly and disassembly.
· Applicable to various scenarios such as indexing, positioning, and stop limiting of fixtures.
· The stroke can be finely adjusted by changing the screw-in depth.
■ Differences between MISUMI Economy Ball Plungers and MISUMI Standard Products
· Except for the zinc-plated type, the body, ball, and spring of the MISUMI economy ball plunger are all made of high-quality stainless steel, with no painting or coloring, making them suitable for equipment with high surface requirements such as medical and electronics.
· Complete range of specifications to meet various size, length, and load requirements.
· Made entirely of stainless steel, with no painting or coating, making it suitable for equipment with higher surface requirements.
· No wrench slot at the front end; please use with a hex wrench.
· Simple ball plunger structure: the tip ball is pushed out by an internal spring for a fixed stroke, and can be released by overcoming the spring force and pressing in the ball.
· Flexible installation: Suitable for linear and rotary motion mechanisms that require positioning; can be installed with standard threads for easy assembly and disassembly.
· Applicable to various scenarios such as indexing, positioning, and stop limiting of fixtures.
· The stroke can be finely adjusted by changing the screw-in depth.
■ Differences between MISUMI Economy Ball Plungers and MISUMI Standard Products
· Except for the zinc-plated type, the body, ball, and spring of the MISUMI economy ball plunger are all made of high-quality stainless steel, with no painting or coloring, making them suitable for equipment with high surface requirements such as medical and electronics.
Usage Method
Precautions
· No wrench slot at the front end; tightening is done using a hex wrench through the hex hole at the rear
· Stroke (S), groove size (B), and load are all reference values and not guaranteed values
· No anti-loosening treatment applied
· Stroke (S), groove size (B), and load are all reference values and not guaranteed values
· No anti-loosening treatment applied
Example of Use
When installing on thin plates, fastening can be achieved with a nut.
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