The front idler controls track tension distribution and guides the top run of the chain — a worn or leaking idler causes uneven chain tension, accelerated link wear, and potential de-tracking. This idler bolt m20*2.5*75 is manufactured to OEM tread diameter and shaft specification for correct tension and alignment.

Why Choose This Idler Bolt M20*2.5*75
– Tread diameter and width matched to OEM for correct chain contact geometry and tension distribution
– Shaft bore and seal housing dimensions matched to OEM for direct frame mounting
– Internal oil-bath lubrication system

Heavy-Duty Construction
This idler bolt m20*2.5*75 is manufactured using forged or cast steel body with induction-hardened tread surface for wear resistance. Floating seal system: face-type mechanical seal resists ingress in mud, water, and abrasive ground. Precision-bored shaft housing for correct shaft fit without excessive play. 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
– Check idler oil level when carrying out track maintenance
– Inspect tread for grooving and measure tread diameter
– Check idler mounting bracket for cracking when replacing

Australia-Wide Supply
We supply high-quality idler bolt m20*2.5*75 replacement parts across Australia with shipping from NSW. Suitable for aftermarket heavy equipment repairs and undercarriage maintenance applications.