Pin wear is a slow killer — joint play builds gradually until digging precision is gone and bush replacement intervals shorten dramatically. This pin 7- boom+arm joint sk140 sk140-8 is machined to OEM hardness and diameter specifications, restoring correct joint clearance and extending the service life of the surrounding bushes.

Why Choose This Pin 7- Boom+Arm Joint SK140 SK140-8
– OEM-matched diameter and length tolerances for correct joint clearance without shimming
– Case-hardened surface with tough core
– OEM-compatible retaining groove and locking configuration

Heavy-Duty Construction
This pin 7- boom+arm joint sk140 sk140-8 is manufactured using chrome-moly alloy steel: surface hardness 58–62 HRC, core hardness 35–45 HRC. Hard chrome plating on bearing surface. Ground finish to h6 tolerance for interference-free fitting. 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
– Apply EP grease to pin before fitting and pack grease nipple immediately after installation
– Check bush bore condition before fitting — oversized bores accelerate pin wear
– Replace pin seals and dust excluders at the same service to prevent contamination ingress

Australia-Wide Supply
We supply high-quality pin 7- boom+arm joint sk140 sk140-8 replacement parts across Australia with shipping from NSW. Suitable for aftermarket heavy equipment repairs and undercarriage maintenance applications.