Shim for National Crane 900

The shim, identified by part number 201064, is a precision-engineered component used to establish or correct clearances between mechanical parts. Its function is to compensate for manufacturing tolerances, ensure accurate alignment, and distribute loads across assemblies. By maintaining the correct spacing, this component helps ensure that mechanical systems operate within their design parameters.

This shim is specifically designed for the National Crane 900 truck-mounted crane. Shims of this type are typically utilized in various crane systems, including boom extension mechanisms, outrigger supports, slewing systems, or large-diameter bearing assemblies where precise adjustment is required for proper fitment and stability.

In general engineering, a shim acts as a spacer to fill gaps between parts that might otherwise be loose or misaligned. By selecting the correct thickness, maintenance technicians can achieve the exact tolerances required for the assembly, preventing excessive play or binding within the mechanical system.