Tapered roller bearings

Tapered roller bearings are mainly used to bear radial and axial combined loads, mainly radial load; while tapered roller thrust bearings with large taper angle can be used to bear radial and axial combined loads, mainly axial loads.

Tapered roller bearing is is of separate type, and its inner ring (including tapered roller and cage) and outer ring can be installed separately. In the process of installation and use, the radial and axial clearance of the bearing can be adjusted, or pre-interference installation can be done.

Bearings with this type include single row tapered roller bearings, double row tapered roller bearings and four row tapered roller bearings, used for a variety of industrial applications.

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Main structural forms of tapered roller bearings:

1. Single row tapered roller bearing

Single row tapered roller bearing can limit the axial displacement of the shaft or shell in one direction and bear the axial load in one direction. Additional axial force is generated under the action of radial load. Therefore, in the two supports of the shaft, the end faces of bearing outer ring and bearing inner ring are oppositely mounted. If used alone, the applied axial force must be greater than the additional axial force. The 313 series tapered roller bearings have large contact angles (27°~ 30°) and can withstand large axial loads. The contact angle of tapered roller bearings in other series is between 10°and 18°.

2. Double row tapered roller bearing

Double row tapered roller bearing has a pair of raceway outer ring and two inner rings, and a middle spacer between the two inner rings. The thickness of the spacer can be adjusted to adjust the bearing clearance. Double row tapered roller bearing can bear the bidirectional axial load while bearing the radial load. It can limit the bidirectional axial displacement of the shaft or shell within the axial clearance range of the bearing.

3. Four row tapered roller bearings

Four row tapered roller bearings adopt two double raceway inner rings, one double raceway outer ring and two single raceway outer rings, and there are spacers between inner ring and outer ring for adjusting clearance. It has similar performance with double row bearing: large radial load and low limit speed. Four row tapered roller bearings are mainly used for heavy machinery, such as rolling mill.

Bearing type	Dimension								Rated Load		Maximum Speed		Mass KG ≈
	d	D	B	C	T	r1smin	r2smin	а	Cr	Cor	Grease	Oil
	mm≈								KN		r/min
32004	20	42	15	12	15	0.6	0.6	10	24	29	8500	12000	0.10
32005	25	47	15	11.5	15	0.6	0.6	12	26.5	34	8000	11000	0.10
32006	30	55	17	13	17	1.0	1.0	14	39	47.5	6700	9000	0.17
32007	35	62	18	14	18	1.0	1.0	15	46.5	58.5	6000	8000	0.22
32008	40	68	19	14.5	19	1.0	1.0	15	54	71	5300	7000	0.29
32009	45	75	20	15.5	20	1.0	1.0	17	61	86.5	4800	6300	0.33
32010	50	80	20	15.5	20	1.0	1.0	18	64	95	4500	6000	0.42
32011	55	90	23	17.5	23	1.5	1.5	20	81.5	118	4000	5300	0.58
32012	60	95	23	17.5	23	1.5	1.5	21	83	125	3800	5000	0.63
32013	65	100	23	17.5	23	1.5	1.5	23	83	129	3400	4500	0.63
32014	70	110	25	19	25	1.5	1.5	24	106	163	3200	4300	0.97
32015	75	115	25	19	25	1.5	1.5	25	108	170	3000	4000	0.93
32016	80	125	29	22	29	1.5	1.5	27	137	212	2600	3600	1.24
32017	85	130	29	22	29	1.5	1.5	28	143	228	2400	3400	1.31
32018	90	140	32	24	32	2.0	1.5	30	166	255	2200	3200	1.69
32019	95	145	32	24	32	2.0	1.5	32	173	275	2200	3200	1.79
32020	100	150	32	24	32	2.0	1.5	33	176	285	2000	3000	1.93
32021	105	160	35	26	35	2.5	2.0	35	204	335	1900	2800	2.33
32022	110	170	38	29	38	2.5	2.0	37	240	400	1800	2600	2.96
32024	120	180	38	29	38	2.5	2.0	40	250	425	1700	2400	3.28
32026	130	200	45	34	45	2.5	2.0	44	335	560	1600	2200	5.05
32028	140	210	45	34	45	2.5	2.0	46	345	610	1600	2200	5.18
32030	150	225	48	36	48	3.0	2.5	50	390	695	1500	2000	6.31
32032	160	240	51	38	51	3.0	2.5	53	425	750	1300	1800	7.78
32034	170	260	57	43	57	3.0	2.5	57	465	800	1200	1700	10.6
32036	180	280	64	48	64	3.0	2.5	60	630	1100	1100	1600	14.2
32038	190	290	64	48	64	3.0	2.5	63	640	1140	950	1400	14.8
32040	200	310	70	53	70	3.0	2.5	67	765	1370	900	1300	18.9