Inch R series bearings Supplier

Inch R series Bearings

Inch R series Bearings is Single-row deep groove bearings ,which are the most common type of rolling bearings. Their use is widespread. The raceway grooves on both the inner and outer rings have circular arcs of slightly larger radius than that of the balls.
The Inch system series deep groove ball bearings that we designs and manufactures, go from 3.175 mm bore up to 66.675 mm external diameter.

Inch R series Bearings Dimension

Any combination of closures is available

Basic
Bearing
No.
Nominal Bearing Dimensions Preferred Shoulder Diameters
d D B r (min) Shaft Housing
Open Shielded sealed
mm inch mm inch inch mm inch mm mm inch mm inch mm inch
R3 4.763 0.1875 12.700 0.5000 3.970 0.1562 4.980 0.1960 0.15 0.006 6.350 0.2500 11.125 0.4380
R3A 4.763 0.1875 12.700 0.5000 4.980 0.1960 4.980 0.1960 0.15 0.006 6.350 0.2500 11.125 0.4380
R4 6.350 0.2500 15.875 0.6250 4.980 0.1960 4.980 0.1960 0.20 0.008 7.950 0.3130 14.300 0.5630
R4A 6.350 0.2500 19.050 0.7500 5.560 0.2188 7.140 0.2812 0.30 0.012 8.738 0.3440 16.662 0.6560
R6 9.525 0.3750 22.225 0.8750 5.560 0.2188 7.140 0.2812 0.30 0.012 11.913 0.4690 19.837 0.7810
R8 12.700 0.5000 28.575 1.1250 6.350 0.2500 7.940 0.3125 0.30 0.012 15.088 0.5940 26.187 1.0310
R8-7 11.113 0.4375 28.575 1.1250 6.350 0.2500 0.30 0.012
R10 15.875 0.6250 34.925 1.3750 7.140 0.2812 8.730 0.3438 0.60 0.024 19.050 0.7500 31.750 1.2500
R12 19.050 0.7500 41.275 1.6250 7.940 0.3125 11.110 0.4375 0.60 0.024 23.012 0.9060 37.313 1.4690
R14 22.225 0.8750 47.625 1.8750 9.525 0.3750 12.700 0.5000 0.79 0.031 26.187 1.0310 43.663 1.7190
R16 25.400 1.0000 50.800 2.0000 9.525 0.3750 12.700 0.5000 0.79 0.031 29.362 1.1560 46.838 1.8440
R18 28.575 1.1250 53.975 2.1250 9.525 0.3750 12.700 0.5000 0.79 0.031 32.537 1.2810 50.013 1.9690
R20 31.750 1.2500 57.150 2.2500 9.525 0.3750 12.700 0.5000 0.79 0.031 35.712 1.4060 53.188 2.0940
R22 34.925 1.3750 63.500 2.5000 11.113 0.4375 14.288 0.5625 0.79 0.031 38.887 1.5310 59.538 2.3440
R24 38.100 1.5000 66.675 2.6250 11.113 0.4375 0.79 0.031 42.062 1.6560 62.713 2.4690

☆We reserve the right to change specifications and other information included in this catalogue without notice.

Other Parameters

Basic
Bearing
No.
Basic Load
Ratings (lbs)
Factor Limiting Speeds
(1000 RPM)
Ball
Complement
Bearing Weight
(Approx.)
Cr 
KN
Cor
KN
fo Grease
rpm
Oil
rpm
No. Size
mm
Weight
Ibs kg
R3 1.310 0.490 53 41000 48000 6 2.3810 0.0066 0.0030
R3A 1.310 0.490 53 41000 48000 6 2.3810 0.0066 0.0030
R4 1.480 0.615 38 36000 43000 8 2.3810 0.0110 0.0050
R4A 2.340 0.885 36 34000 40000 6 3.9690 0.0198 0.0090
R6 3.350 1.410 38 32000 38000 7 3.9690 0.0198 0.0090
R8 5.400 2.360 30 30000 8 4.6730 0.0374 0.0170
R8-7 3.912 2.245 8 4.6730
R10 5.600 2.910 24 24000 9 4.6730 0.0748 0.0340
R12 7.246 4.445 20 20000 9 6.3500
R14 9.625 6.889 18000 28000
R16 9.625 6.889 16000 26000
R18 11.214 8.945 14000 24000
R20 11.214 8.945 12000 22000
R22 14.428 12.120 10000 18000
R24 15.760 13.320 8000 15000