Spherical Roller Bearing

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Spherical Roller Bearing

IGO Spherical roller bearings are double row, self-retaining units comprising inner rings with two raceways inclined at an angle to the bearing axis , outer rings with a common sphered raceway, spherical rollers, cages and in certain designs also internal guide rings or center rings. The bearings can also be sealed.
Due to the spherical internal shape of the outer ring and spherical rollers, the spherical roller bearings are self-aligning and insensitive to misalignment of the shaft relative to the housing, which can be caused, for example, by shaft deflection. They can accommodate both heavy radial load and axial loads.
IGO spherical roller bearings are available in types of EA, CC, CA and MB. Types EA and CC have pressed steel cage, while types CA and MB have brass cage. Type EA has especially high load capacity, features low torque, and has a high-strength cage.
Spherical roller bearings are widely used in construction machinery, paper machine, gear box, vibration screen, etc.

Dimension(mm)				Basic Load Rating(KN)		Bearing Designation		Limiting Speed(rpm)		Mounting Dimension(mm)			Mass(kg)
d	D	B	rsmin	Cr	Cor	Cylindrical Bore	Tapered Bore	Grease	Oil	da(min)	Da(max)	ra(max)	Mass(kg)
20	52	15	1.1	31.7	32.1	21304CA	21304CAK	6000	7500	27	45	1	0.175
20	52	15	1.1	35.8	35.2	21304CTN1	21304KCTN1	6000	7500	27	45	1	0.161
25	62	17	1.1	42.7	45.5	21305CA	21305CAK	5300	6700	32	55	1	0.277
25	62	17	1.1	45.5	45.8	21305CTN1	21305KCTN1	5300	6700	32	55	1	0.258
30	72	19	1.1	57.5	63.9	21306CA	21306CAK	4500	6000	37	65	1	0.412
30	72	19	1.1	63.8	65.4	21306CTN1	21306KCTN1	4500	6000	37	65	1	0.391
35	80	21	1.5	65.4	75.4	21307CA	21307CAK	4000	5300	44	71	1.5	0.542
35	80	21	1.5	74.4	77.7	21307CTN1	21307KCTN1	4000	5300	44	71	1.5	0.507
40	90	23	1.5	88.8	99	21308CA	21308CAK	3600	4500	49	81	1.5	0.75
40	90	23	1.5	88.8	99	21308CC	21308CCK	3600	4500	49	81	1.5	0.743
45	90	23	1.5	93.9	102	21308CTN1	21308KCTN1	3600	4500	49	81	1.5	0.717
45	100	25	1.5	105.7	118.4	21309CA	21309CAK	3200	4000	54	91	1.5	1.02
45	100	25	1.5	105.7	118.4	21309CC	21309CCK	3200	4000	54	91	1.5	1
45	100	25	1.5	111.2	123.6	21309CTN1	21309KCTN1	3200	4000	54	91	1.5	0.949
50	110	27	2	123.6	144.2	21310CA	21310CAK	2800	3800	60	100	2	1.3
50	110	27	2	128.7	144.2	21310CC	21310CCK	2800	3800	60	100	2	1.3
50	110	27	2	128.7	144.2	21310CTN1	21310KCTN1	2800	3800	60	100	2	1.22