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71921 ACD/P4AL

71921 ACD/P4AL

71921 ACD/P4AL
Bearing Type Ball
For Load Direction Combined Radial and Thrust
Single Row/Double Row Single
Seal Type Open
Precision Rating P4 (ABEC-7)
Contact Angle 25
Part Number 71921 ACD/P4AL
NSK Code 7921A5TRE34P4
Arrangement DB Set of two bearings arranged back-to-back <>
DF Set of two bearings arranged face-to-face ><
DT Set of two bearings arranged in tandem <<
DG Set of two bearings for universal matching
Bore Dia (d) 105 mm
Bore Dia Tolerance -0.008mm to 0
Outer Dia (D) 145 mm
Outer Dia Tolerance -0.009mm to 0
Width (B) 20 mm
Width Tolerance -0.2mm to 0
Ring Material 52100 Chrome steel
Ball Material 52100 Chrome steel
Cage Material Polyamide
Dynamic Load Rating (Cr) (KN) 57.2
Static Load Rating (Cor) (KN) 65.5
Max Speed (Grease) (RPM) 7500
Max Speed (Oil) (RPM) 12000
Preload Extra Light Preload
Light Preload
Medium Preload
Heavy Preload
Special Preload
Special Axial Clearance
Lubrication Required
Shaft Mount Type Press Fit
Temperature Range -40 to 120 ºC
Weight (grams) 820
RoHS Compliant
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