Multiquip 1217528 Unbalanced Mass (Large) - OEM Replacement Part for Trench Rollers

The unbalanced mass (large) is a critical vibration component in the drum assembly of trench rollers, responsible for generating the compaction force needed for effective soil and asphalt consolidation. This precision-engineered weight creates the eccentric motion within the drum that produces the vibratory action essential for proper compaction performance.

This component is installed within the front drum assembly of the RX1575 Series trench roller and works in conjunction with the drum's bearing system and gearbox. During drum service procedures outlined in the workshop manual, technicians should inspect the unbalanced mass for wear, cracks, or mounting integrity. Service involves removing rubber-metal elements, bearing caps, and the gearbox cover to access internal drum components. When reinstalling, proper torque specifications are critical—pinion nuts require 50 Nm, straight neck connections require 40 Nm with blue adhesive, and drum screws must be tightened to 56 Nm.

Compatible with the following Multiquip model:

• RX1575 Series Trench Roller

Genuine Multiquip OEM part, sold by an authorized dealer.