Taper standard: JIS B 6339
Material: Alloyed case hardened steel
Surface Treatment: Blackening and Bright
Taper tolerance: <AT3
Hardness: HRC 56-60
Carbon depth: 0.8±0.2mm
Surface Roughness: Ra<0.2μm
Balancing: G6.3/15000; G2.5/25000
BBT Advantages:
* Improve tool holder stability when high speed working.
* Improve workpiece surface finish.
* Improve working dimension accuracy.
* Improve ATC repeatability.
* Improve the roundness when boring operation.
* Extend cutting tool life.
| Size | D | d1 | d2 | d3 | d4 | d5 | d6 | l1 | I2 | 13 | 14 | a | T |
| BBT30 | 46 | 31.75 | 56.14 | 38 | 12.5 | 16.1 | 8 | 70.4 | 48.4 | 24 | 21 | 1 | M12*1.75 |
| BBT40 | 63 | 44.45 | 75.679 | 53 | 17 | 16.1 | 10 | 92.4 | 65.4 | 30 | 26 | 1 | M16*2.0 |
| BBT50 | 100 | 69.85 | 119.019 | 85 | 25 | 25.7 | 15 | 139.8 | 101.8 | 45 | 36.5 | 1.5 | M24*3.0 |
Other Products
According to needs to be possible to provide the balanced hilt, the standard precision is G6.3/12000rpm. the precise precision is G2.5/20000rpm.
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Contact Us
Tel: +86 534 425 1888
Mob/ Wechat: +86 137 9138 1619
E-mail: jacksun@ht-tools.net
WhatsApp: +86 137 9138 1619
Add.:East Area of Economic Development Area, Pingyuan County, Shandong Province. China 253100
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