Thrust Ball Bearings

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Thrust Ball Bearings

Thrust ball bearings are produced as single direction or double direction thrust ball bearings. They are designed to accommodate axial loads only and must not be subjected to any radial load.

Thrust ball bearings are separable, the shaft washer, housing washer(s), ball and cage assembly(s) can be mounted separately. Shaft washers have a ground bore to enable an interference fit. The bore of the housing washer is turned and always larger than the shaft washer bore.

Single direction thrust ball bearings: consist of two washers with raceways and balls guided b a cage. Washers have flat seating surfaces, and that is why they must be supported so that all balls can be evenly loaded. Bearings carry the axial load only in one direction. They are not able to carry radial forces.

Double direction thrust ball bearings: have two cages with balls between the central shaft washer and two houding washers with flat seating surfaces. The shaft washer has raceways on both sides and is fixed on the journal. Bearings are able to carry only axial forces in both directions.

Series table

Principal dimensions （mm)			Basic load ratings (KN)		Pu	Min Loading A	Speed ratings (rpm)		Weight (kg)	Designation
d	D	H	dyc Cr	stc Cor	Pu	Min Loading A	Reference speed	Limiting Speed	Weight (kg)	Designation
3	8	3.5	0.85	0.77	0.028	0.000003	26000	36000	0.003	BA3
4	10	4	1.25	1.2	0.044	0.000008	22000	30000	0.003	BA4
5	12	4	1.43	1.6	0.06	0.000013	20000	28000	0.004	6A5
6	14	5	1.99	2.28	0.085	0.000027	17000	24000	0.004	BA6
7	17	6	2.6	3.1	0.12	0.00005	14000	19000	0.005	BA7
8	19	7	3.32	4.05	0.15	0.000085	12000	17000	0.007	BA8
9	20	7	3.51	4.55	0.17	0.00011	12000	16000	0.01	BA9
10	24	9	9.95	15.3	0.56	0.0012	9500	13000	0.02	51100
10	26	11	12.7	18.6	0.7	0.0018	8000	11000	0.03	51200
12	26	9	10.4	16.6	0.62	0.0014	9000	13000	0.022	51101
12	28	11	13.3	20.8	0.77	0.0022	8000	11000	0.034	51201
15	28	9	9.36	15.3	0.56	0.0012	8500	12000	0.023	51102
15	32	12	16.5	27	1	0.0038	7000	10000	0.046	51202
17	30	9	9.75	16.6	0.62	0.0014	8500	12000	0.025	51103
17	35	12	17.2	30	1.1	0.0047	6700	9500	0.053	51203
20	35	10	13.5	25	0.92	0.0033	7500	10000	0.037	51104
20	40	14	22.5	40.5	1.53	0.0085	6000	8000	0.083	51204
25	42	11	15.9	31.5	0.92	0.0033	6300	9000	0.056	51105
25	47	15	27.6	55	2.04	0.015	5300	7500	0.11	51205
25	52	18	34.5	60	2.24	0.018	4500	6300	0.17	51305
25	60	24	55.3	96.5	3.6	0.048	3600	5000	0.34	51405
30	47	11	16.8	36	1.34	0.0067	6000	8500	0.063	51106
30	52	16	25.5	51	1.9	0.013	4800	6700	0.13	51206
30	60	21	37.7	71	2.65	0.026	3800	5300	0.26	51306
30	70	28	72.8	137	5.1	0.097	3000	4300	0.52	51406
75	100	19	44.2	146	5.5	0.11	3200	4300	0.4	51115
75	110	27	67.6	183	6.8	0.17	2400	3400	0.83	51215
75	135	44	163	390	14	0.79	1700	2400	2.6	51315
75	160	65	251	610	20.8	1.9	1300	1800	6.75	51415M
80	105	19	44.9	153	5.7	0.12	3000	4300	0.42	51116
80	115	28	76.1	208	7.65	0.22	2400	3400	0.91	51216
80	140	44	159	390	13.7	0.79	1700	2400	2.7	51316
80	170	68	270	670	22.4	2.3	1200	1700	7.95	51416M
85	110	19	46.2	163	6	0.14	3000	4300	0.44	51117
85	125	31	97.5	275	9.8	0.39	2200	3000	1.2	51217
85	150	49	190	465	16	1.1	1600	2200	3.55	51317
85	180	72	286	750	24	2.9	1200	1600	9.45	51417M
90	120	22	59.2	208	7.5	0.22	2600	3800	0.67	51118
90	135	35	119	325	11.4	0.55	2000	2800	1.7	51218
90	155	50	195	500	16.6	1.3	1500	2200	3.8	51318
90	190	77	307	815	25.5	3.5	1100	1500	11	51418M
100	135	25	85.2	290	10	0.44	2400	3200	0.97	51120
100	150	38	124	345	11.4	0.62	1800	2400	2.2	51220

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Thrust Ball Bearings

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