Roller Double Row Angular Contact Ball Bearings

Roller Double Row Angular Contact Ball Bearings Introduction

The double row angular contact ball bearings typically use balls as rolling elements. However, there are bearings that incorporate both balls and rollers.

These bearings are often used in applications such as machine tool spindles, gearboxes, and other precision equipment where both radial and axial loads need to be supported, and the design allows for higher load capacities and better performance under certain conditions.

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LR50 Series

The roller double row angular contact ball bearing (LR50 series) has a reasonable structural design and adopts a double row angular contact ball design, which can withstand large axial and radial loads. At the same time, the inner ring and outer ring of the bearing are in contact with the roller and cage respectively, giving the bearing high stability and long service life.

It has strong load-bearing capacity and can withstand large axial and radial loads under high-speed operation conditions. This makes the bearing suitable for use in various high-precision, high-load mechanical systems, such as CNC machine tools, industrial robots, etc.

Bearing Code (Outer Diameter Straight Surface)		Bearing Code (Outer Diameter Arc Surface)		Dimensions( mm )				Rated Load（KN）		Reference Weight
Dust Cover Type	Seal Type	Dust Cover Type	Seal Type	d	D	B	rmin	Cr	Cor	Mass(kg)
LR5000 KDD	LR5000 NPP	LR5000 KDDU	LR5000 NPPU	10	28	12	0.3	5.647	3.198	0.038
LR5001 KDD	LR5001 NPP	LR5001 KDDU	LR5001 NPPU	12	30	12	0.3	6.109	3.700	0.042
LR5002 KDD	LR5002 NPP	LR5002 KDDU	LR5002 NPPU	15	35	13	0.3	6.497	4.314	0.063
LR5003 KDD	LR5003 NPP	LR5003 KDDU	LR5003 NPPU	17	40	14	0.3	9.063	6.102	0.088
LR5004 KDD	LR5004 NPP	LR5004 KDDU	LR5004 NPPU	20	47	16	0.6	11.954	8.314	0.136
LR5005 KDD	LR5005 NPP	LR5005 KDDU	LR5005 NPPU	25	55	16	0.6	12.559	9.476	0.157
LR5006 KDD	LR5006 NPP	LR5006 KDDU	LR5006 NPPU	30	62	19	1.0	17.876	13.905	0.264
LR5007 KDD	LR5007 NPP	LR5007 KDDU	LR5007 NPPU	35	68	20	1.0	20.776	17.251	0.315
LR5008 KDD	LR5008 NPP	LR5008 KDDU	LR5008 NPPU	40	75	21	1.0	21.584	19.122	0.400
LR5009 KDD	LR5009 NPP	LR5009 KDDU	LR5009 NPPU	45	80	23	1.0	22.394	20.800	0.750

LR52 LR53 (3057, 3067, 3058, 3068) Series

Roller double row angular contact ball bearings LR52 LR53 (3057, 3067, 3058, 3068) series have smaller friction resistance, which helps to reduce the energy consumption and temperature of the mechanical system. At the same time, the friction coefficient of the bearing is stable, which can ensure that the mechanical system maintains stable performance during long-term operation.

Roller double row angular contact ball bearings have high rotation accuracy, which helps improve the motion accuracy and stability of the mechanical system. At the same time, the bearing can automatically align and adapt to the assembly requirements of various spindles, making the mechanical system less prone to deviations and vibrations.

Roller double row angular contact ball bearings are suitable for various mechanical systems, such as machine tools, textile machinery, printing machinery, packaging machinery, etc. At the same time, the bearing can adapt to different working environment temperature and humidity conditions, and has wider adaptability.

Bearing Code (Outer Diameter Straight Surface)		Bearing code (Outer Diameter Arc Surface)		Dimensions( mm )				Rated Load(KN)		Reference Weight
Dust Cover Type (LR52、LR53 KDD )	Seal Type (LR52、LR53 NPP )	Dust Cover Type (LR52、LR53 KDDU )	Seal Type (LR52、LR53 NPPU )	d	D	B	rmin	Cr	Cor	Mass (kg)
305700 ZZ	305700 2RS	305800 ZZ	305800 2RS	10	32	14	0.6	7.1	3.9	0.057
305701 ZZ	305701 2RS	305801 ZZ	305801 2RS	12	35	15.9	0.6	7.8	4.6	0.0579
305702 ZZ	305702 2RS	305802 ZZ	305802 2RS	15	40	15.9	0.6	10.3	6.3	0.100
305703 ZZ	305703 2RS	305803 ZZ	305803 2RS	17	47	17.5	0.6	12.7	8.2	0.161
305704 ZZ	305704 2RS	305804 ZZ	305804 2RS	20	52	20.6	1.0	16.3	10.5	0.214
305705 ZZ	305705 2RS	305805 ZZ	305805 2RS	25	62	20.6	1.0	18.8	13.7	0.315
305706 ZZ	305706 2RS	305806 ZZ	305806 2RS	30	72	23.8	1.0	25.2	18.3	0.480
305707 ZZ	305707 2RS	305807 ZZ	305807 2RS	35	80	27	1.1	31.5	24.5	0.663
305708 ZZ	305708 2RS	305808 ZZ	305808 2RS	40	85	30.2	1.1	41.8	33.3	0.754
305709 ZZ	305709 2RS	305809 ZZ	305809 2RS	45	90	30.2	1.1	41.5	33.6	0.814
306700 ZZ	306700 2RS	306800 ZZ	306800 2RS	10	37	19	0.6	10.5	5.8	0.108
306701 ZZ	306701 2RS	306801 ZZ	306801 2RS	12	42	19	1.0	13.1	7.4	0.141
306702 ZZ	306702 2RS	306802 ZZ	306802 2RS	15	47	19	1.0	12.8	8.2	0.179
306703 ZZ	306703 2RS	306803 ZZ	306803 2RS	17	52	22.2	1.0	17.8	10.7	0.242
306704 ZZ	306704 2RS	306804 ZZ	306804 2RS	20	62	22.2	1.1	19.6	12.7	0.373
306705 ZZ	306705 2RS	306805 ZZ	306805 2RS	25	72	25.4	1.1	27.3	18.4	0.555
306706 ZZ	306706 2RS	306806 ZZ	306806 2RS	30	80	30.2	1.1	36.1	25.3	0.763
306707 ZZ	306707 2RS	306807 ZZ	306807 2RS	35	90	34.9	1.5	51.0	36.1	1.076
306708 ZZ	306708 2RS	306808 ZZ	306808 2RS	40	100	36.5	1.5	62.3	45.2	1.360

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Roller Double Row Angular Contact Ball Bearings

Roller Double Row Angular Contact Ball Bearings Introduction

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Precision Bearing

Angular Contact Ball Bearings