Multiquip 2129 Shaft Assembly Pillow Block Bearing Service - OEM Replacement Part

The pillow block bearing shaft assembly is a critical rotating component in power trowel spider assemblies, supporting radial blade rotation while maintaining precise alignment during concrete finishing operations. This shaft assembly includes integrated bearings that handle the rotational forces and loads transmitted through the trowel arms during float and finish operations.

In power trowel systems, the drive shaft couples the hydraulic motor to the spider assembly, which holds the trowel arms in their radial pattern. The pillow block bearing configuration provides stable support for the rotating shaft while accommodating the eccentric forces generated during high-speed finishing. Regular inspection of this assembly is critical, as bearing wear or shaft misalignment can cause vibration, uneven blade contact, and premature wear of trowel arms and blades. Symptoms of a failing shaft assembly include abnormal noise during rotation, increased vibration, uneven concrete finish patterns, and visible shaft wobble.

This shaft assembly is compatible with the following Multiquip power trowel models:

• BHN
• BRT
• BTO20HTCSL
• HRT
• JTNS20-SW20
• JTNSW20-JTNSW24

Genuine Multiquip OEM part, sold by an authorized dealer.