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Angular Contact Ball Bearing: Metric, Steel, Open, 40° Contact Angle, 7304 Bearing Trade, 20 mm Bore Dia, 52 mm OD

Item # 459X637

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Product Specs

Measurement System: Metric
Ring Material: Steel
Closure: Open
Contact Angle: 40 °
Ball Material: Steel
Bearing Trade Number: 7304
Bore Diameter: 20 mm
OD: 52 mm
Width: 15 mm
Dynamic Load Capacity: 4,271.3 lb
Maximum Speed: 18,000 RPM
Maximum Operating Temperature: 212 ° F
Precision Rating: ABEC 3
Cage Material: Reinforced Polyamide
Application: Pumps; Compressors; Centrifuges
Axial Loads: Good
Ball Loading: Non-Fill Slot
Ball Material Grade: 52100
Bearing Full Designation Number: 7304 BEGAP
Bearing Series: 73
Bore Diameter Tolerance: +0/-13 microns
Dynamic Radial Load Capacity: 4,271.3 lb
Fillet Radius: 1 mm
High Speed: Excellent
Load Direction: Radial & Thrust; Thrust; Radial
Lubrication: MT47 Grease
Minimum Operating Temperature: -40 ° F
Number of Ball Rows: 1
OD Tolerance: +0/-13 microns
Radial Internal Clearance: C0
Radial Loads: Good
Retaining Ring Groove: No
Retaining Ring Included: No
Ring Material Grade: 52100
Rolling Element Type: Ball
Specifications Met: ISO 683-17:1999; EN 10088-1:1995
Static Load Capacity: 2,338 lb
Static Radial Load Capacity: 2,338 lb

Compliance and Restrictions

Country Of Origin

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About Angular-Contact Ball Bearings

The raceways of these angular-contact ball bearings have high and low shoulders. The high shoulders of the inner and outer raceways oppose each other, which directs axial, or thrust loads (where the load is parallel to the shaft) through the bearing in one direction. Double-row bearings act like a pair of back-to-back single-row bearings, and can support axial loads in two directions. Angular-contact ball bearings are recommended for applications with moderate to high radial loads (where the load is perpendicular to the shaft) and low to moderate axial loads.

Ball bearings have spherical rolling elements that distribute loads over a small surface area, and they typically create less heat and friction and tolerate higher speeds than roller bearings. To ensure proper functioning, bearings should be lubricated regularly.

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