2344 / 2347 Spindle Bearings

2344 and 2347 Series Angular Contact Ball Bearings are engineered for ultra-high-speed, precision applications. They offer superior rotational accuracy, low vibration, and high rigidity, ideal for spindles, CNC machines, and high-performance industrial equipment.

Contact Angle: 60°

Bearing Type: Double-Row Thrust Angular Bearing

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Features

✅ 2344/2347 Spindle Bearings are high-precision angular contact ball bearings designed for machine tool spindle applications requiring high rigidity and excellent load capacity. With optimized internal geometry and a large contact angle design, they provide strong axial load support, superior stiffness, and reliable performance under heavy cutting conditions.

✅ Featuring high rotational accuracy, low vibration, and stable operation, 2344/2347 spindle bearings are suitable for high-performance CNC machine tools, machining centers, and precision grinding equipment. Their robust design helps maintain spindle accuracy and improve machining quality during continuous operation.

✅ Available in precision grades, preload configurations, and hybrid ceramic options, 2344/2347 spindle bearings provide flexible solutions for demanding spindle systems. They offer excellent durability, thermal stability, and long service life, making them ideal for medium-speed and heavy-load machining applications.

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Product Details

Parameter

Bearing Part Numbers	Boundary Dimensions									Load Ratings		Limiting Speed		Mass
	d	D	dmax	T	C	B	rsmin	rlsmin	ns	Cr	C0r	Grease	Oil	≈
	mm								≈	KN		r/min		kg
234406 M	30	55	47	32	16	8.00	1.00	0.15	4.80	14.3	24	11000	16000	0.29
234706 M	32	55	47	32	16	8.00	1.00	0.15	4.80	14.3	24	11000	16000	0.27
234407 M	35	62	53	34	17	8.50	1.00	0.15	4.80	17.6	31.5	9500	14000	0.38
234707 M	37	62	53	34	17	8.50	1.00	0.15	4.80	17.6	31.5	9500	14000	0.35
234408 M	40	68	58.5	36	18	9.00	1.00	0.15	4.80	20.8	38	8500	12000	0.42
234708 M	42	68	58.5	36	18	9.00	1.00	0.15	4.80	20.8	38	8500	12000	0.46
234409 M	45	75	65	38	19	9.50	1.00	0.15	4.80	23.2	45	7500	10000	0.57
234709 M	47	75	65	38	19	9.50	1.00	0.15	4.80	23.2	45	7500	10000	0.53
234410 M	50	80	70	38	19	9.50	1.00	0.15	4.80	24	49	7000	9500	0.62
234710 M	52	80	70	38	19	9.50	1.00	0.15	4.80	24	49	7000	9500	0.58
234411 M	55	90	78	44	22	11.00	1.10	0.30	6.50	34	67	6300	8500	0.94
234711 M	57	90	78	44	22	11.00	1.10	0.30	6.50	34	67	6300	8500	0.88
234412 M	60	95	83	44	22	11.00	1.10	0.30	6.50	33.5	68	6000	8000	1.01
234712 M	62	95	83	44	22	11.00	1.10	0.30	6.50	33.5	68	6000	8000	0.94
234413 M	65	100	88	44	22	11.00	1.10	0.30	6.50	36	76.5	5600	7500	1.08
234713 M	67	100	88	44	22	11.00	1.10	0.30	6.50	36	76.5	5600	7500	1.01
234414 M	70	110	97	48	24	12.00	1.10	0.30	6.50	42.5	93	7000	7000	1.49
234714 M	73	110	97	48	24	12.00	1.10	0.30	6.50	42.5	93	7000	7000	1.36
234415 M	75	115	102	48	24	12.00	1.10	0.30	6.50	44	100	5000	6700	1.57
234715 M	78	115	102	48	24	12.00	1.10	0.30	6.50	44	100	5000	6700	1.43
234416 M	80	125	110	54	27	13.50	1.10	0.30	6.50	52	120	4500	6000	2.16
234716 M	83	125	110	54	27	13.50	1.10	0.30	6.50	52	120	4500	6000	1.98
234417 M	85	130	115	54	27	13.50	1.10	0.30	9.50	52	125	4500	6000	2.25
234717 M	88	130	115	54	27	13.50	1.10	0.30	9.50	52	125	4500	6000	2.07
234418 M	90	140	123	60	30	15.00	1.50	0.30	9.50	61	146	4000	5300	2.92
234718 M	93	140	123	60	30	15.00	1.50	0.30	9.50	61	146	4000	5300	2.71
234419 M	95	145	128	60	30	15.00	1.50	0.30	9.50	61	150	4000	5300	3.04
234719 M	98	145	128	60	30	15.00	1.50	0.30	9.50	61	150	4000	5300	2.83
234420 M	100	150	133	66	33	15.00	1.50	0.30	9.50	62	156	3800	5000	3.17
234720 M	103	150	133	66	33	15.00	1.50	0.30	9.50	62	156	3800	5000	2.95
234421 M	105	160	142	66	33	16.50	2.00	0.60	9.50	69.5	176	3600	4800	4.07
234721 M	109	160	142	66	33	16.50	2.00	0.60	9.50	69.5	176	3600	4800	3.73
234422 M	110	170	150	72	36	18.00	2.00	0.60	9.50	90	224	3400	4500	5.19
234722 M	114	170	150	72	36	18.00	2.00	0.60	9.50	90	224	3400	4500	4.79
234424 M	120	180	160	72	36	18.00	2.00	0.60	9.50	93	240	3200	4300	5.56
234724 M	124	180	160	72	36	18.00	2.00	0.60	9.50	93	240	3200	4300	5.14
234426 M	130	200	177	84	42	21.00	2.00	0.60	12.20	118	300	2800	3800	8.28
234726 M	135	200	177	84	42	21.00	2.00	0.60	12.20	118	300	2800	3800	7.58
234428 M	140	210	187	84	42	21.00	2.10	0.60	12.20	122	320	2600	3600	8.78
234728 M	145	210	187	84	42	21.00	2.10	0.60	12.20	122	320	2600	3600	8.07
234430 M	150	225	200	90	45	22.50	2.10	0.60	15.00	132	355	2600	3600	10.80
234730 M	155	225	200	90	45	22.50	2.10	0.60	15.00	132	355	2600	3600	9.95
234432 M	160	240	212	96	48	24.00	2.10	0.60	15.00	156	415	2400	3400	12.9
234732 M	165	240	212	96	48	24.00	2.10	0.60	15.00	156	415	2400	3400	12
234434 M	170	260	230	108	54	27.00	2.10	0.60	15.00	193	520	2200	3200	17.7
234734 M	176	260	230	108	54	27.00	2.10	0.60	15.00	193	520	2200	3200	16.3
234436 M	180	280	248	120	60	30.00	2.10	0.60	15.00	216	585	2000	3000	23.4
234736 M	187	280	248	120	60	30.00	2.10	0.60	15.00	216	585	2000	3000	21.5
234438 M	190	290	258	120	60	30.00	2.10	0.60	15.00	224	630	1900	2800	24.7
234738 M	197	290	258	120	60	30.00	2.10	0.60	15.00	224	630	1900	2800	22.6
234440 M	200	310	274	132	66	33.00	2.10	0.60	15.00	265	720	1800	2600	31.5
234740 M	207	310	274	132	66	33.00	2.10	0.60	15.00	265	720	1800	2600	29.2
234444 M	220	340	304	144	72	36.00	3.00	1.10	15.00	315	900	1600	2200	41.7
234744 M	228	340	304	144	72	36.00	3.00	1.10	15.00	315	900	1600	2200	38.5
234448 M	240	360	322	144	72	36.00	3.00	1.10	15.00	325	965	1500	2000	43.8
234748 M	248	360	322	144	72	36.00	3.00	1.10	15.00	325	965	1500	2000	40.4
234452 M	260	400	354	164	82	41.00	4.00	1.50	17.70	380	1180	1400	1900	64.5
234752 M	269	400	354	164	82	41.00	4.00	1.50	17.70	380	1180	1400	1900	59.7
234456 M	280	420	374	164	82	41.00	4.00	1.50	17.70	390	1270	1300	1800	69
234756 M	289	420	374	164	82	41.00	4.00	1.50	17.70	390	1270	1300	1800	63.8
234460 M	300	460	406	190	95	47.50	4.00	1.50	17.70	450	1530	1200	1700	98.4
234760 M	310	460	406	190	95	47.50	4.00	1.50	17.70	450	1530	1200	1700	91.2
234464 M	320	480	426	190	95	47.50	4.00	1.50	17.70	455	1630	1200	1700	102
234764 M	330	480	426	190	95	47.50	4.00	1.50	17.70	455	1630	1200	1700	94.9
234468 M	340	520	459	212	106	53.00	4.00	1.50	17.70	540	2000	1100	1600	138
234768 M	350	520	459	212	106	53.00	4.00	1.50	17.70	540	2000	1100	1600	129