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Handbook / Bearings

NSK 7921 C ISO

Single-row angular contact ball bearing

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Brand
NSK
Standart
ISO
Principal dimensions
d,  Inner diameter,  mm
105
D,  Outside diameter,  mm
145
B,  Width,  mm
20
m,  Weight,  kg
0.826
To specifications

Specifications

Type of product
Bearing
Unit of measure
Metric
Type of friction
Rolling
Rolling elements
Balls
Direction of the perceived load
Radial-thrust
Number of rows
Single row
Bore
Cylindrical
Material
Steel
Cage
Brass
d (mm) - Bore diameter
105
D (mm) - Outside diameter
145
B (mm) - Width
20
m (kg) - Mass
0.826
r1,2 (mm) - Chamfer dimension (Inner ring) (min)
1.1
da (mm) - Diameter of shaft abutment (min)
112
ra (mm) - Fillet radius (max)
1
ra (mm) - Fillet radius (max)
1
C (kN) - Basic dynamic load rating (radial)
51000
C0 (kN) - Basic static load rating (radial)
57000
f0 - Calculation factor
16.6
r1,2 (mm) - Chamfer dimension (Outer ring) (min)
1.1
r3,4 (mm) - Chamfer dimension (min)
0.6
Grease (r/min)
6300
Oil (r/min)
9000
Da (mm) - Diameter of housing abutment (max)
138
Db (mm) - Diameter of housing abutment (max)
140
a (mm) - Distance pressure point
26.7

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