The master pin is the connecting fastener for the track chain assembly — it must hold full chain tensile load while remaining extractable for future service. This aftermarket master pin 30-40t is machined to OEM diameter, length, and head geometry for the 30-40T for a direct press-fit installation.

Compatible Machines
– 30-40T

Why Choose This Master Pin 30-40T
– Pin diameter: OEM tolerance ±0.01mm for correct press-fit in master link bore
– Pin length: OEM specification for correct protrusion and lock engagement
– Head and locking groove geometry: OEM dimensions for correct master pin lock fitment

Heavy-Duty Construction
This master pin 30-40t is manufactured using alloy steel: case-hardened surface for wear resistance; tough core to resist shear under chain load. Hardness profile confirmed to OEM specification: surface 58–62 HRC, core 35–45 HRC. Machined to tight tolerances with surface finish to prevent galling on installation. Designed to withstand vibration, impact loads, and harsh operating environments commonly found in construction, quarry, mining, and earthmoving applications. Precision manufacturing helps ensure correct fitment and long service life.

Applications
Suitable for a wide range of heavy equipment and undercarriage systems including:
– Excavators
– Dozers
– Loaders
– Track roller assemblies
– Earthmoving machinery undercarriage components

Maintenance Recommendations
– Use correct master pin press tool
– Install locking mechanism fully
– Inspect master pin and lock at every track inspection; replace if any wear or deformation is visible

Australia-Wide Supply
We supply high-quality master pin 30-40t replacement parts across Australia with shipping from NSW. Suitable for aftermarket heavy equipment repairs and undercarriage maintenance applications.