Tapered roller bearing supplier

The tapered roller bearing has a conical inner ring and a outer ring raceway, and the tapered rollers are arranged between the two. All the projection lines of all conical surfaces meet at the same point of the axis of the bearing. This design makes the tapered roller bearings especially suitable for composite (radial and axial) loads. The axial load capacity of the bearing is mostly determined by the contact angle alpha; the greater the angle of the alpha, the higher the axial load capacity is. The angle size is represented by the calculation coefficient E; the greater the E value, the greater the contact angle, the greater the applicability of the bearing to the axial load.
Tapered roller bearings are usually separated, that is, the conical inner ring components consisting of rollers and inner rings of cage assemblies can be installed separately from the conical outer ring (outer ring).

30300 Series Tapered Roller Bearings manufacturer

30300 Series Tapered Roller Bearings
Basic
Bearing
No.
Nominal Bearing DimensionsPreferred Shoulder Diameters
dDTBCr1
(Min Inner Ring)
r2
(Min Out Ring)
mminchmminchmminchmminchmminchmminchmminch
30302150.5906421.653514.250.5610130.5118110.43311.00.0391.00.039
30303170.6693471.850415.250.6004140.5512120.47241.00.0391.00.039
30304200.7874522.047216.250.6398150.5906130.51181.50.0591.50.059
30305250.9843622.440918.250.7185170.6693150.59061.50.0591.50.059
30306301.1811722.834620.750.8169190.7480160.62991.50.0591.50.059
30307351.3780803.149622.750.8957210.8268180.70872.00.0791.50.059
30308401.5748903.543325.250.9941230.9055200.78742.00.0791.50.059
30309451.77171003.937027.251.0728250.9843220.86612.00.0791.50.059
30310501.96851104.330729.251.1516271.0630230.90552.50.0982.00.079
30311552.16541204.724431.501.2402291.1417250.98432.50.0982.00.079
30312602.36221305.118133.501.3189311.2205261.02363.00.1182.50.098
30313652.55911405.511836.001.4173331.2992281.10243.00.1182.50.098
30314702.75591505.905538.001.4961351.3780301.18113.00.1182.50.098
30315752.95281606.299240.001.5748371.4567301.18113.00.1182.50.098
30316803.14961706.692942.501.6732391.5354331.29923.00.1182.50.098
30317853.34651807.086644.501.7520411.6142341.33864.00.1573.00.118
30318903.54331907.480346.501.8307431.6929361.41734.00.1573.00.118
30319953.74022007.874049.501.9488451.7717381.49614.00.1573.00.118
303201003.93702158.464651.502.0276471.8504391.53544.00.1573.00.118
303211054.13392258.858353.502.1063491.9291411.61424.00.1573.00.118
303221104.33072409.448854.502.1457501.9685421.65354.00.1573.00.118
303241204.724426010.236259.502.3425552.1654461.81104.00.1573.00.118

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

Other Parameters

Basic
Bearing
No.
Preferred Shoulder
Diameters
Basic Load
Ratings
Effective
Load
Center
Limiting
Speeds
Bearing Weight
(Approx.)
da (min)db (max)Da (max)CrCoraGreaseOilWeight
mminchmminchmminchKNKNmmrpmrpmIbskg
3030220.50.80722.00.86636.51.43723.221.69.69900130000.2070.094
3030322.50.88624.00.94541.51.63428.927.210.49000120000.2840.129
3030431.01.22027.01.06344.01.73235.534.011.18000110000.3630.165
3030533.51.31934.01.33954.02.12648.548.113.0670089000.5790.263
3030638.51.51640.01.57563.52.50060.063.115.3570076000.8510.387
3030745.01.77245.01.77271.52.81575.382.616.8500067001.1330.515
3030850.01.96952.02.04781.53.20991.5107.619.5440059001.6430.747
3030955.02.16559.02.32391.53.602111.0129.821.3400053002.1650.984
3031062.02.44165.02.559100.03.937133.0152.023.0360048002.8821.310
3031167.02.63871.02.795110.04.331155.0179.024.5330044003.6521.660
3031274.02.91377.03.031118.04.646183.0214.026.5300040004.5322.060
3031379.03.11083.03.268128.05.039203.0238.028.5280037005.6102.550
3031484.03.30789.03.504138.05.433230.0272.030.0260035006.7323.060
3031589.03.50495.03.740148.05.827255.0305.032.0240032007.8543.570
3031694.03.701102.04.016158.06.220297.0350.034.0230030009.7024.410
30317103.04.055107.04.213166.06.535305.0365.035.52100290011.4405.200
30318108.04.252113.04.449176.06.929270.0320.037.51940264013.2666.030
30319113.04.449118.04.646186.07.323296.0355.040.01900253015.3566.980
30320118.04.646127.05.000201.07.913365.0445.041.51800240018.8328.560
30321126.04.961133.05.236211.08.307455.0565.043.21700230020.9889.520
30322131.05.157143.05.630226.08.898485.0595.045.11600220024.25111.000
30324141.05.551154.06.063246.09.685535.0655.050.01500200030.64413.900