What are the Characteristics of Double Row Angular Contact Ball Bearings?

Double row angular contact ball bearings can be used to bear large radial load-based diameter, axial combined load and moment load and two back-to-back configuration of the single row angular contact ball bearings similar, but the width than two sets of single row bearing narrow, its speed than single row bearing low. Double-row angular contact ball bearings mainly have two structures, one is the contact angle of 30 of the whole inner ring structure - a contact angle of 45 ° of the inner ring for the structure of two bodies.

Double row angular contact ball bearings structure variants are four kinds.

1. A type with outer diameter less than or equal to 90mm bearing of standard design. No ball loading notch, so it can bear equal two-way axial load. Lightweight glass fiber reinforced nylon 66 cage is used, and the bearing temperature rise is very small.

2. Standard design for A type bearings with outer diameter greater than 90mm. One side has ball loading notch, equipped with steel plate stamping cage or brass solid cage.

3. E type is a reinforced structure with ball loading notch on one side, which can be equipped with more steel balls, so the load capacity is higher.

4. Two sides with dust cover type and two sides with seal type A type design and E type design of double row angular contact ball bearings can both sides with dust cover (non-contact) or seal (contact). Sealed bearings are filled with anti-rust lithium grease inside, the operating temperature is generally in -30 ~ +110 ℃. In the use of the period without re-lubrication, should not be heated before installation, and should not be cleaned.

Double row angular contact ball bearings installation should be noted, although the bearing can bear two-way axial load, but if there is a ball loading gap on one side, it should be careful not to let the main axial load through the notched side of the groove edge.

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