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  • Spindle bearing
Spindle bearings have limited tolerances, all P4S class, they are particularly suitable for bearing arrangements that require very high guiding accuracy and speed capability, especially for bearing arrangements of shafts in machine tools.
  • Model
  • d - Bore (mm)
  • D - Outer Diameter (mm)
  • B - Width (mm)
  • Cr - Dynamic Radial Rating
  • Cor - Static Radial Rating

Part Number

d - Bore

D - Outer Diameter

B - Width

Cr - Dynamic Radial Rating

Cor - Static Radial Rating

Reference speed

Limiting speed

HCB71934-C-T-P4S-UL 170 mm 230 mm 28 mm 133000 N 110000 N 12000 rpm 7500 rpm
B7238-C-T-P4S-UL 190 mm 340 mm 55 mm 320000 N 290000 N 5000 rpm 3400 rpm
B7238-E-T-P4S-UL 190 mm 340 mm 55 mm 305000 N 275000 N 4800 rpm 3200 rpm
HCB71938-C-T-P4S-UL 190 mm 260 mm 33 mm 174000 N 146000 N 10000 rpm 6700 rpm
B7240-C-T-P4S-UL 200 mm 360 mm 58 mm 330000 N 310000 N 4800 rpm 3200 rpm
B7244-C-T-P4S-UL 220 mm 400 mm 65 mm 405000 N 400000 N 4300 rpm 2800 rpm
B7244-E-T-P4S-UL 220 mm 400 mm 65 mm 385000 N 380000 N 4000 rpm 2600 rpm