Ball button
Product name | Ball Buttons- Tapped |
Part number | TBBT8 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Contact is made at the retaining position, reducing wear on the outside body.
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Risk info.
Some wear and dents.
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Available sizes
■Ball button (Tap type)
Material: W1-9 Carbon Tool Steel (Hardness: 55~60HRC)
Surface treatment: Electroless nickel plating
Thread DIA. (Coarse) | Thread length | Button O.D. | Button height |
M4 | 5 | φ8 | 3 |
M5 | 6 | φ9 | 3 |
M6 | 8 | φ12 | 3 |
M8 | 10 | φ15 | 4 |
M10 | 12 | φ20 | 4 |
M12 | 15 | φ22 | 4 |
* When combining with ball plungers, use the same thread DIA.
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Accuracy Info
■Accuracy of Ball button (Tap type)
Concentricity of the thread and the notch: 0.1
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Ball plunger
Product name | Ball Plungers - Long |
Part number | BPJL8 |
* Orange colored cells in the table below indicate the part numbers used in this example.
Selection criteria
Suitable for temporarily retaining the table in the preferred working position.
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Available sizes
■Ball plunger (Long)
Ball material | Load type | Body | Ball | Spring |
Material | Hardness | Surface treatment | Material | Hardness | Material |
Metal | For extra light loads | 1045 Carbon Steel | 29- 35HRC | Black oxide | 52100 Bearing Steel | 55HRC- | SWP−B |
For light loads |
For heavy loads | 304 Stainless Steel | − | − |
For extra heavy loads | 1045 Carbon Steel | 29- 35HRC | Nickel plating |
Resin | For extra light loads | Black oxide | Polyacetal - | − |
For light loads |
For heavy loads |
For extra heavy loads | Nickel plating |
■Sizes and Dimensions
Thread DIA.(Coarse) | Metal ball | Plastic ball | Body length |
DIA. | Stroke | DIA. | Stroke |
M3 | φ1.5 | 0.5 | − | − | 13 |
M4 | φ2.5 | 0.8 | φ2.4 | 0.7 | 15 |
M5 | φ3 | φ3 | 0.8 | 18 |
M6 | φ3 | φ3 | 0.8 | 20 |
M8 | φ4 | 1 | φ4 | 1 | 23 |
M10 | φ5 | 1.2 | φ5 | 1.2 | 27 |
M12 | φ7.1 | 1.8 | φ7 | 1.8 | 32 |
M16 | φ9.5 | 2.5 | φ9.5 | 2.5 | 40 |
*Plastic ball type for thread DIA. M3 is not available.
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Performance info.
■Ball plunger (Long) spring load (N)
Thread DIA. (Coarse) | For extra light loads | For light loads | For heavy loads | For extra heavy loads |
min. | max. | min. | max. | min. | max. | min. | max. |
M3 | 0.3 | 0.6 | 1.0 | 2.0 | 1.5 | 2.9 | 2.2 | 5.0 |
M4 | 0.6 | 1.6 | 2.0 | 4.9 | 3.9 | 9.8 | 2.5 | 12.6 |
M5 | 1.0 | 3.1 | 2.9 | 9.8 | 4.9 | 19.6 | 11.7 | 25.1 |
M6 | 1.6 | 4.9 | 4.9 | 14.7 | 9.8 | 29.4 | 18.7 | 35.3 |
M8 | 2.4 | 6.4 | 6.9 | 19.6 | 12.7 | 39.2 | 24.5 | 46.8 |
M10 | 3.0 | 8.1 | 8.8 | 24.5 | 18.6 | 49.0 | 26.7 | 58.7 |
M12 | 3.5 | 9.7 | 9.8 | 29.4 | 19.6 | 58.8 | 26.1 | 62.3 |
M16 | 5.7 | 15.8 | 15.7 | 49.0 | 29.4 | 98.0 | 55.4 | 116.0 |
*Load "min." is the initial load, and "max." is when the ball is fully depressed.
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IDEA NOTE Protruding ball button provides stable clamping.
By the use of protruding ball buttons, rotary table retention force is adjustable, and wear dents are reduced.
IDEA NOTE 上段治具脱落防止
プレートをザグリ穴形状にし、六角支柱を嵌めることで上段の脱落を防止