B719C/AC-2RZ Spindle Bearing

B719C/AC-2RZ spindle bearings are designed for high-speed and high-precision machine tool applications, including CNC machining centers, electric spindles, and precision equipment. Featuring angular contact ball bearing design, these bearings provide excellent rotational accuracy, high rigidity, and reliable spindle support. With optimized internal geometry and 2RZ sealing protection, B719C/AC-2RZ bearings deliver low friction, reduced vibration, thermal stability, and long service life for demanding high-speed machining applications.

B719 C-2RZ: α = 15°

B719 AC-2RZ: α = 25°

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Features

✅ High-Speed & Precision Performance: Designed for high-speed spindle applications, B719C/AC-2RZ bearings provide excellent rotational accuracy, low friction, and stable operation for CNC machine tools and electric spindles.

✅ High Rigidity & Reliable Spindle Support: The angular contact ball bearing structure ensures high rigidity, load capacity, and precise spindle positioning for high-precision machining.

✅ Sealed Design & Long Service Life: The 2RZ sealing design improves contamination protection while maintaining smooth operation, helping reduce maintenance requirements and extend bearing service life.

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Product Details

Specifications

B719C/AC-2RZ Super-precision Angular Contact Spindle Bearing Designation and Parameter Table

Bearing Designation	Bnd. Dim. (mm)						Load Rating (kN)		Limiting Speed (r/min)	Mass (kg)
Bearing Designation	d	D	B	rs min	rls min	a	Cr	Cor	Grease	Mass (kg)
B71900 C-2RZ	10	22	6	0.30	0.10	5	1.9	1.0	90000	0.01
B71900 AC-2RZ	10	22	6	0.30	0.10	7	1.8	1.0	75000	0.01
B71901 C-2RZ	12	24	6	0.30	0.10	5	2.0	1.1	80000	0.01
B71901 AC-2RZ	12	24	6	0.30	0.10	7	1.9	1.1	67000	0.01
B71902 C-2RZ	15	28	7	0.30	0.10	6	2.2	1.4	67000	0.02
B71902 AC-2RZ	15	28	7	0.30	0.10	9	2.1	1.3	56000	0.02
B71903 C-2RZ	17	30	7	0.30	0.10	7	2.3	1.5	60000	0.02
B71903 AC-2RZ	17	30	7	0.30	0.10	9	2.2	1.4	50000	0.02
B71904 C-2RZ	20	37	9	0.30	0.15	8	3.9	2.7	50000	0.04
B71904 AC-2RZ	20	37	9	0.30	0.15	11	3.7	2.5	43000	0.04
B71905 C-2RZ	25	42	9	0.30	0.15	9	4.2	3.2	43000	0.05
B71905 AC-2RZ	25	42	9	0.30	0.15	12	3.9	3.0	36000	0.05
B71906 C-2RZ	30	47	9	0.30	0.15	10	6.3	4.9	36000	0.05
B71906 AC-2RZ	30	47	9	0.30	0.15	13	6.0	4.6	32000	0.05
B71907 C-2RZ	35	55	10	0.60	0.15	11	6.9	6.0	32000	0.08
B71907 AC-2RZ	35	55	10	0.60	0.15	15	6.5	5.6	26000	0.08
B71908 C-2RZ	40	62	12	0.60	0.15	13	7.3	6.8	28000	0.13
B71908 AC-2RZ	40	62	12	0.60	0.15	18	6.8	6.4	24000	0.13
B71909 C-2RZ	45	68	12	0.60	0.15	14	10.0	9.3	24000	0.15
B71909 AC-2RZ	45	68	12	0.60	0.15	19	9.4	8.8	22000	0.15
B71910 C-2RZ	50	72	12	0.60	0.15	14	10.3	10.1	22000	0.15
B71910 AC-2RZ	50	72	12	0.60	0.15	20	9.7	9.5	20000	0.15
B71911 C-2RZ	55	80	13	0.60	0.15	16	13.2	12.9	20000	0.20
B71911 AC-2RZ	55	80	13	0.60	0.15	22	12.4	12.2	18000	0.20
B71912 C-2RZ	60	85	13	1.00	0.30	16	13.6	13.9	19000	0.22
B71912 AC-2RZ	60	85	13	1.00	0.30	23	12.8	13.2	17000	0.22
B71913 C-2RZ	65	90	13	1.00	0.30	17	14.0	15.0	18000	0.23
B71913 AC-2RZ	65	90	13	1.00	0.30	25	13.2	14.1	15000	0.23
B71914 C-2RZ	70	100	16	1.00	0.30	19	18.3	19.9	16000	0.38
B71914 AC-2RZ	70	100	16	1.00	0.30	28	17.3	18.7	14000	0.38
B71915 C-2RZ	75	105	16	1.00	0.30	20	18.8	21.2	16000	0.41
B71915 AC-2RZ	75	105	16	1.00	0.30	29	17.7	20.0	13000	0.41
B71916 C-2RZ	80	110	16	1.00	0.30	21	21.0	23.9	15000	0.42
B71916 AC-2RZ	80	110	16	1.00	0.30	30	19.8	22.6	13000	0.42
B71917 C-2RZ	85	120	18	1.10	0.60	23	21.9	26.2	14000	0.62
B71917 AC-2RZ	85	120	18	1.10	0.60	33	20.6	24.8	12000	0.62
B71918 C-2RZ	90	125	18	1.10	0.60	23	23.9	28.6	13000	0.64
B71918 AC-2RZ	90	125	18	1.10	0.60	34	22.5	27.0	11000	0.64
B71919 C-2RZ	95	130	18	1.10	0.60	24	24.5	30.3	12000	0.67
B71919 AC-2RZ	95	130	18	1.10	0.60	35	23.1	28.6	10000	0.67
B71920 C-2RZ	100	140	20	1.10	0.60	26	29.3	36.3	11000	0.92
B71920 AC-2RZ	100	140	20	1.10	0.60	38	27.6	34.2	9500	0.92
B71921 C-2RZ	105	145	20	1.10	0.60	27	30.1	38.4	11000	0.96
B71921 AC-2RZ	105	145	20	1.10	0.60	39	28.4	36.2	9000	0.96
B71922 C-2RZ	110	150	20	1.10	0.60	27	34.9	43.8	10000	0.98
B71922 AC-2RZ	110	150	20	1.10	0.60	40	32.9	41.4	8500	0.98
B71924 C-2RZ	120	165	22	1.10	0.60	30	36.6	49.0	9000	1.37
B71924 AC-2RZ	120	165	22	1.10	0.60	44	34.5	46.2	8000	1.37
B71926 C-2RZ	130	180	24	1.50	0.60	33	41.1	55.9	8000	1.77
B71926 AC-2RZ	130	180	24	1.50	0.60	48	38.6	52.6	7000	1.77
B71928 C-2RZ	140	190	24	1.50	0.60	34	41.9	60.0	7000	1.88
B71928 AC-2RZ	140	190	24	1.50	0.60	50	39.4	55.6	6700	1.88
B71930 C-2RZ	150	210	28	2.00	1.00	38	47.5	71.1	6700	2.94
B71930 AC-2RZ	150	210	28	2.00	1.00	56	44.7	67.0	6000	2.94
B71932 C-2RZ	160	220	28	2.00	1.00	39	50.1	74.8	6000	3.11
B71932 AC-2RZ	160	220	28	2.00	1.00	58	47.1	70.5	5600	3.11
B71934 C-2RZ	170	230	28	2.00	1.00	41	57.7	86.8	5600	3.22
B71934 AC-2RZ	170	230	28	2.00	1.00	61	54.3	81.8	5000	3.22
B71936 C-2RZ	180	250	33	2.00	1.00	45	59.2	93.1	5000	4.93
B71936 AC-2RZ	180	250	33	2.00	1.00	67	55.7	87.7	4800	4.93
B71938 C-2RZ	190	260	33	2.00	1.00	47	75.0	116.1	4800	5.03
B71938 AC-2RZ	190	260	33	2.00	1.00	69	70.6	109.4	4300	5.03
B71940 C-2RZ	200	280	38	2.00	1.00	51	75.0	120.7	4500	7.26
B71940 AC-2RZ	200	280	38	2.00	1.00	75	70.5	113.7	4000	7.26
B71944 C-2RZ	220	300	38	2.00	1.00	54	84.6	139.6	4300	7.77
B71944 AC-2RZ	220	300	38	2.00	1.00	80	79.6	131.5	3800	7.77