Custom Spherical Roller Bearing 21300 Series Manufacturer

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Spherical roller bearings 21300 series, whose inner rings have two raceways, and outer race-ways are spherical. The centers of curvature of outer raceways are also the bearing centers. The bearings possess self-aligning performance, the permissible disalignment angle is about 1-2.5°, and they can be used in certain permanent deflective application.

These bearings are able to carry high radial loads, as well as axial loads at the same time, but not pure axial loads, the axial carrying bearing will be needed if axial loads were higher. The contact between rollers and raceways are so close, so the friction is higher than cylindrical roller bearings, and their limiting speed is lower.

Spherical roller bearings are available in the cylindrical inner bore and conical inner bore. The taper of the conical inner bore is 1:12 rear spherical roller bearing with code K and 1:30 rear spherical roller bearing code K30. When such a bearing is matched with a conical shaft, the inner ring moves axially to adjust the radial clearance of the bearing. The tapered roller spherical roller bearings with the rear code K and K30 are mounted on the matching adapter sleeves, which become the rear bearing code K+H and K30+H bearings. This type of bearing can be mounted on an optical axis without a shoulder and is suitable for applications where the bearing needs to be installed and removed frequently.

Application

Spherical roller bearings are primarily used in such application as rolling mills, paper making machines,power-driven gears, reduction gears, railway vehicle axles, crushers, woodworking machinery, shipping and so on.

Bearing Model	Dimensions(mm)			Basic Load Rating(kN)		Limiting Speed(rpm)		Weight(kg)
Bearing Model	d	D	B	Dyn.C	Stat.Co	Grease	Oil	Weight(kg)
21306	30	72	19	51.5	49.4	5800	7800	0.42
21307	35	80	21	63.1	61.3	5000	6700	0.56
21308	40	90	23	82.8	82.2	4500	6100	0.78
21309	45	100	25	102	103	4000	5400	1.04
21310	50	110	27	121	124	3700	4900	1.33
21311	55	120	29	158	191	3300	4500	1.56
21312	60	130	31	173	204	3100	4100	1.93
21313	65	140	33	198	239	2800	3800	2.41
21314	70	150	35	312	286	2700	3500	2.95
21315	75	160	37	250	321	2500	3300	3.51
21316	80	170	39	275	339	2100	2800	4.14
21317	85	180	41	304	387	2200	2900	4.91
21318	90	190	43	347	443	2100	2800	5.71
21319	95	200	45	373	480	1900	2600	7.05
21320	100	215	47	414	528	1800	2400	8.67

Spherical Roller Bearing 21314 size 70x150x35 mm

Spherical Roller Bearing 21316 size 80x170x39 mm

Spherical Roller Bearing 21317 size 85x180x41 mm

Spherical Roller Bearing 21319 size 95x200x45 mm

Spherical Roller Bearing 21318 size 90x190x43 mm

Spherical Roller Bearing 21320 size 100x215x47 mm