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Spherical Roller Bearings

 Spherical Roller Bearing Manufacturer
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Size/ Item
d
D
B
dyn.
stat.
grease
oil
kg
21304 CC 20 52 15 30 30 8000 10000 0.16
22205 CC 25 52 15 35 35 8500 11000 0.18
22205 E 25 52 18 43 44 8500 11000 0.18
21305 CC 25 62 17 41 41 6700 8500 0.25
22206 CC 30 62 20 48 52 7500 9500 0.28
22206 E 30 62 20 61 64 7500 9500 0.28
21306 CC 30 72 19 55 61 6000 7500 0.38
22207 CC 35 72 23 67 73 6300 8000 0.43
22207 E 35 72 23 79 85 6700 8500 0.43
21307 CC 35 80 21 65 72 5300 6700 0.51
22208 CC 40 80 23 73 81 6000 7500 0.52
22208 E 40 80 23 89 98 5600 7000 0.52
21308 CC 40 90 23 82 98 4500 5600 0.71
22308 CC 40 90 33 115 122 4500 5600 1
22308 E 40 90 33 127 137 4300 5300 1
22209 CC 45 85 23 77 88 5300 6700 0.56
22209 E 45 85 23 93 106 5300 6700 0.56
21309 CC 45 100 25 101 114 4300 5300 0.95
22309 E 45 100 36 164 183 3800 4800 1.35
22210 CC 50 90 23 84 100 5000 6300 0.6
22210 E 50 90 23 97 118 5000 6300 0.6
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Spherical roller bearings are double row, combination radial and thrust bearings which can self-align. The rolling element they use is a spherical or crowned roller. The outer ring contains a spherical race allowing for some misalignment of the shaft and housing. The symmetrical barrel rollers freely align themselves to the concave outer ring raceway. As a result, shaft deflections and misalignments of the bearing seats are compensated. Spherical roller bearings have superb capacity for high loads and tolerance to shock loads, while their speed capabilities are limited. According to some estimates, spherical roller bearings have almost two times the life that conventional bearings have.

Spherical roller bearings are generally made of alloy steels or low carbon steels. In some cases chrome plated spherical roller bearings are also available. Some applications require the use of case-hardened or thorough-hardened, high-carbon, bearing quality steel. High-carbon grades of steel do not require carburizing. For low-carbon, carburized steel grades, the carbon is introduced after the spherical roller bearings are machined to a depth sufficient to produce a hardened case that can sustain bearing loads.

At Precision Bearings, we have spherical roller bearings available with specifications as provided in the table above.