Double-Row Angular Contact Ball Bearing (Si3N4)

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Double-row angular contact ball bearing with Si₃N₄ ceramic balls. High combined load capacity, electrically insulating, thermal shock resistant.

Key points covered:

Type: Double-Row Angular Contact (high radial/axial load capacity)
Material: Si₃N₄ (Silicon Nitride) ceramic balls (hybrid, races typically steel)
Key Advantages:

Handles high combined loads (axial + radial)
Electrical insulation (prevents current damage)
Excellent thermal shock resistance
Corrosion resistance
Reduced friction at high speeds

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Tojo Number	Dimentions（mm)				Mounting Dimentions(mm)			Ref. Weight
	d	D	B	r(min）	da	Da	ra	(kg)
	d	D	B	r(min）	min	max	max	(kg)
5200	10	30	14.3	0.6	15	25	0.6	0.02
5201	12	32	15.9	0.6	17	27	0.6	0.02
5202	15	35	15.9	0.6	20	30	0.6	0.03
5302	15	42	19	1	21	36	1	0.05
5203	17	40	17.5	0.6	22	35	0.6	0.04
5303	17	47	22.2	1	23	41	1	0.06
5204	20	47	20.6	1	26	41	1	0.05
5304	20	52	22.2	1.1	27	45	1	0.09
5205	25	52	20.6	1	31	46	1	0.08
5305	25	62	25.4	1.1	32	55	1	0.14
5206	30	62	23.8	1	36	56	1	0.12
5306	30	72	30.2	1.1	37	65	1	0.21
5207	35	72	27	1.1	42	65	1	0.18
5307	35	80	34.9	1.5	44	71	1.5	0.32
5208	40	80	30.2	1.1	47	73	1	0.23
5308	40	90	36.5	1.5	49	81	1.5	0.43
5209	45	85	30.2	1.1	52	78	1	0.25
5309	45	100	39.7	1.5	54	91	1.5	0.57
5210	50	90	30.2	1.1	57	83	1	0.27
5310	50	110	44.4	2	60	100	2	0.8
5211	55	100	33.3	1.5	64	91	1.5	0.39
5311	55	120	49.2	2	65	110	2	0.94
5212	60	110	36.5	1.5	69	101	1.5	0.55
5312	60	130	54	2.1	72	118	2	1.29
5213	65	120	38.1	1.5	74	111	1.5	0.68
5313	65	140	58.74	2.1	77	128	2	1.58

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