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Angular Contact Ball Bearing

Angular contact ball bearings have raceways on both the inner and outer rings, and the inner and outer rings can move relative to each other along the bearing axis. This type of bearing is particularly suitable for bearing compound loads, that is, loads acting radially and axially at the same time. The axial load bearing capacity of angular contact ball bearings increases with the increase of the contact angle α. The contact angle is the angle between the line connecting the contact points of the ball and the raceway in the radial plane and the perpendicular line to the bearing axis.

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Model number	Basic size			Basic load rating		Rated speed
				Dynamic state	Static	Reference speed	Limiting speed
	d [mm]	D [mm]	B [mm]	C [kN]	C₀ [kN]	[r/min]	[r/min]
7313 BEGAP	65	140	33	116	86.5	8000	6300
7313 BEGAM	65	140	33	116	86.5	8000	6300
7313 BEGAF	65	140	33	108	80	6000	5600
7313 BECCM	65	140	33	116	86.5	8000	6300
7313 BECBY	65	140	33	116	86.5	6300	6000
7313 BECBP	65	140	33	116	86.5	6300	6000
7313 BECBM	65	140	33	116	86.5	8000	6300
7313 BECBJ	65	140	33	116	86.5	6300	6000
7313 BECBF	65	140	33	108	80	6000	5600
7313 ACCBM	65	140	33	132	96.5	9500	6300
7312 BEP	60	130	31	95.6	69.5	6300	6000
7312 BEGBY	60	130	31	104	76.5	6700	6300

Model number	Basic size			Basic load rating		Rated speed
				Dynamic state	Static	Reference speed	Limiting speed
	d [in]	D [in]	B [in]	C [Ibf]	C₀ [Ibf]	[r/min]	[r/min]
7313 BEGAP						8000	6300
7313 BEGAM						8000	6300
7313 BEGAF						6000	5600
7313 BECCM						8000	6300
7313 BECBY						6300	6000
7313 BECBP						6300	6000
7313 BECBM						8000	6300
7313 BECBJ						6300	6000
7313 BECBF						6000	5600
7313 ACCBM						9500	6300
7312 BEP						6300	6000
7312 BEGBY						6700	6300

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Four-point Contact Ball Bearings

This is a single-row angular contact ball bearing with separated inner and outer rings. The inner ring is divided into two parts. It can withstand axial loads in two directions and is suitable for occasions with large pure axial loads or combined loads.

Double Row Angular Contact Ball Bearings

Double-row angular contact ball bearings have a double-row ball structure, occupying less axial space and can withstand bidirectional axial displacement and overturning moment.

Single Row Angular Contact Ball Bearings

Single row angular contact ball bearings include 718, 719, 70, 72, 73 and other series. These bearings can withstand unidirectional axial and radial forces. The contact angles are 15° (suffix C), 25° (suffix AC), 30° (suffix A) and 40° (suffix B). The larger the contact angle, the stronger the axial load bearing capacity, but the speed will be relatively slow.

Angular Contact Ball Bearings Feature

1. Bidirectional load capacity: Angular contact ball bearings can bear radial loads and axial loads at the same time. This bidirectional load capacity makes it widely used in the field of industrial machinery, such as machine tool spindles, automobile wheel hubs, motor rotors, etc.

‌2. High-speed operation: Angular contact ball bearings can operate at higher speeds. The larger the contact angle, the higher the axial load capacity, and the smaller the contact angle, the more suitable it is for high-speed rotation.

‌3. Paired installation:

Since single-row angular contact ball bearings can only bear axial loads in one direction, they are usually installed in pairs, with back-to-back and face-to-face forms. Paired bearings can withstand bidirectional axial loads.

‌4. Preload effect:

Preload is one of the important factors that determine the performance of angular contact ball bearings. The larger the preload, the higher the radial stiffness and axial stiffness, but the heat generation increases and the limit speed decreases. Excessive preload may cause sticking during high-speed operation.

‌5. Combination use‌: Angular contact ball bearings can be used in combination. Common combinations include back-to-back combination (DB), face-to-face combination (DF) and series combination (DT). Combination use can provide higher rigidity and load capacity, but the maximum speed will be reduced.

‌Application

Angular contact ball bearings are widely used in high-frequency motors, centrifugal separators, small car front wheels, oil pumps, Roots blowers, air compressors and other equipment.