70C Spindle Bearings / Angular Contact Ball Bearings

70C/AC spindle bearings are designed for high-speed and high-precision machine tool applications, including CNC machining centers and electric spindles. Featuring high rotational accuracy, excellent rigidity, low friction, and superior speed capability, these angular contact ball bearings ensure stable spindle operation under demanding conditions.

70 C: α = 15°

70 AC: α = 25°

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Features

✅ High-Speed Performance: Designed for high-speed spindle applications, 70C/AC spindle bearings provide excellent speed capability, low friction, and stable operation for CNC machine tools and electric spindles.

✅ High Precision & Rigidity: Featuring angular contact ball bearing design, these bearings offer high rotational accuracy, excellent rigidity, and reliable support for precision machining operations.

✅Thermal Stability & Long Service Life: With optimized internal geometry and precision manufacturing, 70C/AC bearings deliver low vibration, reduced heat generation, and consistent performance during continuous high-speed operation.

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Product Details

Specifications

Standard 70C/AC Spindle Bearing Designation and Parameter Table

Bearing Designation	Boundary Dimensions (mm)						Load Rating (kN)		Limiting Speed (r/min)		Mass (kg)
Bearing Designation	d	D	B	rs min	rls min	a	Cr	Cor	Grease	Oil	Mass (kg)
7000 C	10	26	8	0.30	0.15	6	4.0	2.4	67000	100000	0.02
7000 AC	10	26	8	0.30	0.15	8	3.8	2.3	60000	90000	0.02
7001 C	12	28	8	0.30	0.15	7	5.0	3.0	60000	90000	0.02
7001 AC	12	28	8	0.30	0.15	9	4.8	2.8	56000	85000	0.02
7002 C	15	32	9	0.30	0.15	8	5.3	3.3	50000	75000	0.03
7002 AC	15	32	9	0.30	0.15	10	5.1	3.1	45000	67000	0.03
7003 C	17	35	10	0.30	0.15	8	6.7	4.9	45000	67000	0.04
7003 AC	17	35	10	0.30	0.15	11	6.4	4.7	40000	60000	0.04
7004 C	20	42	12	0.60	0.15	10	9.6	6.3	38000	56000	0.06
7004 AC	20	42	12	0.60	0.15	13	9.2	6.0	34000	50000	0.06
7005 C	25	47	12	0.60	0.15	11	12.9	8.7	34000	50000	0.07
7005 AC	25	47	12	0.60	0.15	14	12.3	8.3	30000	45000	0.07
7006 C	30	55	13	1.00	0.30	12	15.7	11.6	28000	43000	0.11
7006 AC	30	55	13	1.00	0.30	17	14.9	10.9	24000	38000	0.11
7007C	35	62	14	1.00	0.30	13	19.3	17.5	20000	34000	0.15
7007 AC	35	62	14	1.00	0.30	18	18.3	16.6	19000	32000	0.15
7008 C	40	68	15	1.00	0.30	15	19.9	19.1	19000	32000	0.19
7008 AC	40	68	15	1.00	0.30	20	18.9	18.2	17000	28000	0.19
7009 C	45	75	16	1.00	0.30	16	26.7	25.3	17000	28000	0.23
7009 AC	45	75	16	1.00	0.30	22	25.4	24.1	16000	26000	0.23
7010C	50	80	16	1.00	0.30	17	27.6	27.5	16000	26000	0.25
7010 AC	50	80	16	1.00	0.30	23	26.2	26.2	15000	24000	0.25
7011 C	55	90	18	1.10	0.60	19	36.7	37.1	14000	22000	0.37
7011 AC	55	90	18	1.10	0.60	26	34.8	35.3	13000	20000	0.37
7012 C	60	95	18	1.10	0.60	19	37.8	40.0	14000	22000	0.39
7012 AC	60	95	18	1.10	0.60	27	35.8	38.0	12000	19000	0.39
7013 C	65	100	18	1.10	0.60	20	38.9	42.9	13000	20000	0.42
7013 AC	65	100	18	1.10	0.60	28	36.8	40.7	11000	18000	0.42
7014 C	70	110	20	1.10	0.60	22	49.9	55.5	12000	19000	0.59
7014 AC	70	110	20	1.10	0.60	31	47.2	52.7	10000	17000	0.59
7015 C	75	115	20	1.10	0.60	23	51.3	59.2	11000	18000	0.62
7015 AC	75	115	20	1.10	0.60	32	48.5	56.2	9500	16000	0.62
7016 C	80	125	22	1.10	0.60	25	61.6	70.4	10000	17000	0.83
7016 AC	80	125	22	1.10	0.60	35	58.3	66.9	9000	15000	0.83
7017 C	85	130	22	1.10	0.60	25	63.3	75.0	9500	16000	0.87
7017 AC	85	130	22	1.10	0.60	36	59.9	71.3	8500	14000	0.87
7018 C	90	140	24	1.50	0.60	27	66.9	84.0	9000	15000	1.18
7018 AC	90	140	24	1.50	0.60	39	63.2	79.7	8000	13000	1.18
7019 C	95	145	24	1.50	0.60	28	79.1	97.6	8500	14000	1.20
7019 AC	95	145	24	1.50	0.60	40	74.8	92.7	7500	12000	1.20
7020 C	100	150	24	1.50	0.60	29	81.2	103.3	8000	13000	1.25
7020 AC	100	150	24	1.50	0.60	41	76.7	98.0	7000	11000	1.25
7021C	105	160	26	2.00	1.00	31	93.9	118.2	7500	12000	1.58
7021AC	105	160	26	2.00	1.00	44	88.8	112.2	7000	11000	1.58
7022 C	110	170	28	2.00	1.00	33	110.4	139.8	7000	11000	1.97
7022 AC	110	170	28	2.00	1.00	47	104.4	132.8	6700	10000	1.97
7024 C	120	180	28	2.00	1.00	34	112.7	148.7	7000	11000	2.11
7024 AC	120	180	28	2.00	1.00	49	106.5	141.1	6700	10000	2.11
7026 C	130	200	33	2.00	1.00	39	144.8	190.8	6700	10000	3.18
7026 AC	130	200	33	2.00	1.00	55	136.8	181.0	6000	9000	3.18
7028 C	140	210	33	2.00	1.00	40	148.7	202.6	6000	9000	3.37
7028 AC	140	210	33	2.00	1.00	57	140.4	192.2	5600	8500	3.37
7030 C	150	225	35	2.10	1.10	43	168.4	232.5	5600	8500	4.10
7030 AC	150	225	35	2.10	1.10	61	159.1	220.6	5000	7500	4.10
7032 C	160	240	38	2.10	1.10	46	189.1	264.5	5000	7500	5.07
7032AC	160	240	38	2.10	1.10	66	178.6	251.0	4800	7000	5.07
7034 C	170	260	42	2.10	1.10	50	205.6	299.3	4800	7000	6.90
7034 AC	170	260	42	2.10	1.10	71	194.2	284.0	4300	6300	6.90
7036 C	180	280	46	2.10	1.10	54	229.5	352.1	4500	6700	9.21
7036 AC	180	280	46	2.10	1.10	77	216.8	334.1	4000	6000	9.21
7038 C	190	290	46	2.10	1.10	55	235.1	370.8	4300	6300	9.61
7038 AC	190	290	46	2.10	1.10	79	222.1	351.8	3800	5600	9.61
7040 C	200	310	51	2.10	1.10	60	289.1	471.4	3800	5600	12.10
7040 AC	200	310	51	2.10	1.10	85	273.1	447.3	3600	5300	12.10
7044 C	220	340	56	3.00	1.10	66	325.3	559.4	3600	5300	15.90
7044 AC	220	340	56	3.00	1.10	93	307.3	530.8	3200	4800	15.90
7048 C	240	360	56	3.00	1.10	68	344.2	623.6	3200	4800	17.00
7048 AC	240	360	56	3.00	1.10	98	325.1	591.7	3000	4500	17.00