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Ball Bearings

Ball bearings are a type of rolling-element bearing that use spherical balls to maintain the separation between the bearing races. Their primary purpose is to reduce rotational friction and support radial and/or axial loads. They are widely used in machinery and equipment that involves motion, thanks to their simplicity, efficiency, and high-speed capabilities.

A typical ball bearing consists of:

Inner ring – fits on the rotating shaft
Outer ring – remains stationary in the housing
Balls – roll between the two rings
Cage (retainer) – holds the balls evenly spaced
Shields/Seals (optional) – protect against contamination

Working Principle:
When the inner ring rotates, the balls roll inside the raceways, reducing the friction caused by sliding. The point contact between the balls and races minimizes surface contact, allowing smooth motion and lower energy loss.

Deep Groove

Ball Bearing

Structure: Single or double row, deep raceway grooves

Load Capacity: Primarily radial, also moderate axial loads in both directions

Speed: High-speed capability

Alignment: Poor misalignment tolerance

Clearance Options: C2, CN, C3, C4 (depending on thermal expansion/load conditions)

Applications: Electric motors, pumps, gearboxes, household appliances

Angular Contact

Ball Bearing

Structure: Raceways in inner and outer rings are offset to accommodate axial loads

Load Capacity: Can carry combined radial and significant axial loads in one direction

Contact Angles: Commonly 15°, 25°, 30°, or 40°

Mounting: Often used in pairs or sets (back-to-back, face-to-face, or tandem)

Speed: Lower than deep groove bearings

Applications: Machine tool spindles, pumps, compressors

Self Aligning

Ball Bearing

Structure: Two rows of balls, with a common spherical raceway in the outer ring

Load Capacity: Light to moderate radial loads; limited axial load capacity

Alignment: Excellent misalignment compensation

Speed: Moderate to high

Applications: Long shafts or situations with shaft deflections, conveyors, textile machines

Thrust

Bearing

Structure: Two washers (shaft and housing), with a ball cage between

Load Capacity: Axial loads only, in one or both directions

Speed: Lower due to axial load nature

Types: 1) Single-direction: Axial load in one direction 2) Double-direction: Axial load in both directions

Applications: Vertical shafts, low-speed applications, turntables

JMD Industrial Solutions offers a wide range and different types of Bearings that are used in different applications. The most common types of bearings are ball bearings, roller bearings, and plain bearings, and JMD has a complete range of sizes in these bearings.

JMD works with an extensive range of brands and a wide network of bearing manufacturers, so you'll be able to find any bearing you need.

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