What are the differences between mounted and unmounted spherical roller bearings?

What are the differences between mounted and unmounted spherical roller bearings?

I. Structural Differences

1. Unmounted: Only the bearing body is present.

○ It's a single spherical roller bearing.

○ You need to purchase the bearing housing, end cap, and seal separately.

○ It can be installed separately in the user's own housing or bracket.

2. Mounted: Bearing + housing integrated (bearing housing unit)

○ The bearing is pre-installed in a cast iron/stamped steel housing.

○ The housing comes with mounting holes, grease fittings, and seals.

○ It can be directly bolted on after purchase.

II. Performance Differences

III. Application Scenarios (Most Crucial)

1. Unmounted — 1. For use in internal equipment and precision mechanisms:

○ Gearboxes, reducers, pump bodies, machine tool accessories

○ Internally integrated by the equipment manufacturer; the outer casing is part of the complete machine

○< face="宋体"> Small space, compact structure, requiring precise fit

2. With mounting bracket – For drive shafts, outdoor/simple frames

○ Agricultural machinery: harvesters, tractors, seeders

○ Conveying equipment: belt conveyors, rollers, assembly lines

○ Fans, mixers, textile machinery, woodworking machinery

○< face="宋体"> Features: Shafts are prone to deformation, installation misalignment, harsh environments; the outer spherical surface of the mounting bracket relies on self-aligning to compensate for misalignment; dust-resistant and vibration-resistant.