SEAT ASSEMBLY

The 551 638 87A SEAT ASSEMBLY (55163887a, 551-638-87a, SEAT ASSEMBLY 55163887a) is a mining-duty multi-part SEAT ASSEMBLY engineered for Sandvik drilling rigs, ROC series machinery, and underground jumbos. The 551 638 87A SEAT ASSEMBLY includes multiple precision components required for structural mounting, linkage installation, equipment reinforcement, and hydraulic or electrical assembly tasks.

This 551 638 87A SEAT ASSEMBLY ensures correct fitment and alignment of critical drilling components subjected to vibration, hydraulic oil exposure, shock load, and abrasive mining conditions. OEM catalog identifiers 55163887a and 551-638-87a are widely referenced across Sandvik spare parts documentation.

The 551 638 87A SEAT ASSEMBLY supports a broad range of installation and repair tasks, including mounting brackets, linkage assemblies, pipe supports, protective covers, and hydraulic block installations. Correct use of this SEAT ASSEMBLY reduces installation errors, improves mechanical reliability, and ensures optimal drilling performance in harsh mining and tunneling environments.

Inspect the components of the 551 638 87A SEAT ASSEMBLY for corrosion, deformation, thread wear, or surface fatigue during service intervals. Replace immediately if any part of the set becomes compromised.

Also indicated as 55163887a, 551-638-87a, and SEAT ASSEMBLY 55163887a, this SEAT ASSEMBLY provides the essential components required for reliable installation and servicing of heavy-duty drilling equipment.