High precision angular contact ball bearing single and double row

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Angular contact ball bearings

-Single-row angular contact ball bearings have a contact angle . They can sustain significant axial loads in one direction together with radial loads . Single-row angular contact ball bearing can be increased by preloading . They are often used in the main spindles of machine tools , for which high running accuracy is required .

Usually , the cages for angular contact ball bearings with a contact angle of ∠30° ( symbol A ) , ∠40° ( symbol B ) , ∠15° ( symbol C ) , ∠25° ( symbol AC ) . A ∠15° & AC ∠25° are primarily for high precision or high speed applications . Machined brass or synthetic resh cages or molded polyamide cages are used .

The maximum operating temperature of molded polyamide cages is 120 C° .

- Matched angular contact ball bearings

1. Type back to back , symbol DB

2. Type face to face , symbol DF

3. Type tandem , symbol DT

-Double-row angular contact ball bearings

This is basically a back to back mounting of two single-row angulat contact ball bearings , but their inner and outer rings are each integrated into one . Axial loads in both directions can be sustained , the capacity to sustain moments is good . This type is used as fixed-end bearings . Their cages are pressed steel .

-Four-point contact ball bearings

The inner ring is split radially into two pieces . Their design allows one bearing to sustain significant axial loads in either direction . The contact angle is ∠35° , so the axial load capacity is high . This type is suitable for carrying pure axial loads or combined loads where the axial loads are high . The cages are made of machined brass .

Model	Dimention mm			Weight kg
Model	d	D	Width/Height	Weight kg
3307-B-2RSR-TVH	35	80	34.9	0.74
7320BECBM	100	215	47	7.5
7410BG	50	130	62	2.2
7308 BECBY	40	90	23	0.64
BA1-9339	80	125	22
H7015ET-2RSZ-P4A-UL	75	150	20	0.25
BA246-1A	246	308	32
M30	30	72	19	0.4
L30	30	62	16	0.25
M25	25	62	17	0.2
L25	25	52	15	0.13
M20	20	52	15	0.13
L20	20	47	14	0.1
E20	20	47	12	0.08
M17	17	44	10	0.07
BO17	17	44	11	0.07
E17	17	44	11	0.07
L17	17	40	10	0.05
E16	16	38	10	0.055
BO15	15	40	10	0.055
N3048	15	37	8	0.03
E14	14	35	8	0.03
E12	12	32	7	0.02
E11	11	32	7	0.02
E10	10	28	8	0.02