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Machine Tool

2-jaw High Precision, Ultra-large Through-hole, High-speed Power Chuck
BRT series

Higher precision 2-jaw gripping

BRT seriesズーム

BRT series

  • Gripping accuracy of 0.01 mm T.I.R. or less
  • Reduced jaw-lift
  • Interchangeable with Kitagawa BT200 and BBT200 series
  • With Tnut-Plus optional dedicated T-nuts, the repeatability of jaws at detaching and attaching is 0.01 mm T.I.R. or less

*CE correspondence


Received the 2021 JSME Award (Technology)


Note 1) The gripping accuracy is the Total Indicator Reading of a test bar right after forming jaws to grip a test bar.

Note 2) The repeatability is the Total Indicator Reading of a test bar measured by detaching the formed jaws from the chuck and mounting them again in the same position.

Note 3) Both gripping accuracy and repeatability are the T.I.R. of a test bar at 10 mm above from Kitagawa standard soft jaw.

All the above criteria are based on our internal regulations.


PAT 6345321

PAT 6345375

PAT 6411619


BR chuck special site

Product Specifications

Model BRT06 BRT08 BRT10
Through-hole (mm) 53 66 81
Gripping Range (mm) Max. 170 210 254
Min. 20 28 38
Jaw Stroke (Diameter) (mm) 5.5 7.4 8.8
Plunger Stroke (mm) 12 16 19
Max. Draw Bar Pull Force (kN) 15.3 23.3 32.7
Max. Static Gripping Force (kN) 39 60 82
Max. Speed (min-1) 6000 5000 4500
Dynamic Gripping Force at Max. Speed (kN) 16 29 29.4
Moment of Inertia (kg・m2) 0.05 0.13 0.32
Net Weight (kg) (with Soft Top Jaws) 12.5 21.7 34.9
Matching Cylinder SR1453C
SS1453K
SR1566C
SS1666K
SR1781C
SS1881K
Matching Soft Jaws
Note) Jaw-mounting bolts are not included.
Standard
Extra Tall
Standard
Extra Tall
Standard
Extra Tall
Tnut-Plus
(Option)
TN06PLUS-2 TN08PLUS-2 TN10PLUS-2
Outline Drawing 2D PDF
DXF
DWG
3D Parasolid
STEP

Note) The 3D data includes two types of the positions of the jaws for both Parasolid and STEP: open end (UC) and closed end (OC).

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