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Machine Tool

High Precision, Ultra-large Through-hole, High-speed Power Chuck
BR series

The standard has evolved.

BR seriesズーム

BR series

*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.

Note 4) Both accuracies for only BR12 are 0.015 mm T.I.R.

Note 5) Download the instruction manual for the optional Tnut-Plus here.


PAT 6345321

PAT 6345375

PAT 6411619


BR chuck special site

Product Specifications

Model BR06 BR08 BR10 BR12
Through-hole (mm) 53 66 81 106
Gripping Range (mm) Max. 170 210 254 315
Min. 16 22 31 44
Jaw Stroke (Diameter) (mm) 5.5 7.4 8.8 10.6
Plunger Stroke (mm) 12 16 19 23
Max. Draw Bar Pull Force
(kN)
at OD Gripping 23 35 49 60
at ID Gripping 11.5 17.5 24.5 30
Max. Static Gripping Force
(kN)
at OD Gripping 58.5 90 123 156
at ID Gripping 29.3 45 61.5 78
Max. Speed (min-1) 6000 5000 4500 3500
Dynamic Gripping Force at Max. Speed (kN)
(at OD Gripping)
22.5 36 44 53
Moment of Inertia (kg・m2) 0.052 0.14 0.32 0.80
Net Weight (kg)
(with Soft Top Jaws)
12.8 22.2 35.8 57.0
Matching Cylinder SR1453C
SS1453K
SR1566C
SS1666K
SR1781C
SS1881K
SR2010C
SS2110K
Matching Soft Jaws
Note) Jaw-mounting bolts are not included.
Standard
Extra Tall
Standard
Extra Tall
Small diameter
gripping
Standard
Extra Tall
Standard
Extra Tall
Matching Hard Jaws
Note) Jaw-mounting bolts are not included.
HB06A1
HB06B1
HB08B1
HB08N1
HB10AA1 HB12N1
Tnut-Plus
(Option)
TN06PLUS TN08PLUS TN10PLUS TN12PLUS
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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