Pin & Bushing

What Are Pin & Bushing in Track Chains?

Pins and bushings form the backbone of track chain components in excavators and dozers. The track pin acts as a pivotal joint, linking track links together, while the track bushing provides a smooth, low-friction pivot point. Together, they create the pivotal pin joint system that withstands extreme loads during operation.

In heavy equipment undercarriage systems, these parts endure constant stress from soil, rocks, and impacts. Excavator track pins transfer torque from the drive sprocket, while bulldozer track bushings handle lateral forces. Over time, pin bushing wear occurs due to abrasion, leading to track pitch wear and chain elongation. GT’s sealed and lubricated track (SALT) options combat this with advanced bushing lubrication, extending service life by up to 50%.

Our self-lubricating bushings feature sealed designs that retain grease, minimizing maintenance. Whether you need track bushings for mini excavators or heavy-duty pins and bushings for large dozers, we deliver precision-engineered parts for optimal performance.

Why Choose GT for Excavator Pins and Bushings?

GT stands out as a trusted pin and bushing supplier thanks to our China-based manufacturing advantages: lower labor costs enable competitive wholesale prices, while our streamlined supply chain guarantees on-time delivery worldwide.

• OEM Compatibility: Direct fit for Caterpillar, Komatsu, Hitachi, and more—no modifications needed.
• Wholesale Savings: Factory-direct pricing beats European suppliers by 30-50%.
• Global Reach: Equipped customers in over 50 countries for 20+ years.
• Custom Solutions: Tailored pin and bushing kits for specific models.

Unlike generic parts, our track chain maintenance components reduce bush and pin replacement frequency through superior hardness and wear resistance.

Materials and Manufacturing Excellence

GT excavator track pins and track bushings feature top-grade materials: 45# carbon steel for reliable durability, 40Cr for superior strength, and 20CrMnTi for peak toughness in harsh, abrasive settings. 

We apply rigorous heat treatment, achieving a hardness depth of 3-8mm and surface hardness of HRC50-60. This ensures wear resistance against pin bushing wear and track pitch wear.

Polishing follows under manual supervision—precise measurements and multiple passes create a mirror finish, reducing the bushing internal diameter friction by 20%. Press-fit track components are induction-hardened for a secure, vibration-resistant fit.

For sealed and lubricated track (SALT) pins, we integrate grease pockets and seals, enabling self-lubricating bushings that perform in dusty or wet environments. Quality checks include ultrasonic testing for cracks and dimension verification to ±0.05mm tolerances.

This craftsmanship minimizes track chain maintenance and maximizes uptime.

Applications: From Excavators to Bulldozers

Our undercarriage pins and track link pins suit diverse machines:

• Excavator Pins and Bushings: Perfect for models like Cat 320, Komatsu PC200—handle digging torque without ovaling.
• Bulldozer Track Bushings: Built for D6T, Komatsu D65, resisting dozing pressures.
• Track Pin and Bushing Assembly: Full kits for quick bush and pin replacement.

In mining or construction, heavy equipment undercarriage parts face track pitch wear from overloads. GT’s designs feature oversized diameters for reinforced pivotal pin joint systems, preventing failures.

Benefits of GT Pin & Bushing Kits

Investing in our pin and bushing kits delivers:

• Extended Life: Heat-treated parts last 2-3x longer than OEM alternatives.
• Cost Efficiency: Wholesale pricing + reduced downtime = 40% savings.
• Easy Installation: Press-fit track components drop in with standard tools.
• Lubrication Superiority: Bushing lubrication systems cut grease needs by 70%.

Customers report fewer track chain components failures, boosting productivity on sites worldwide.

Get Your Pin & Bushing Quote Today!

Don’t let worn pins and bushings halt your operations. GT offers premium excavator pins and bushings, track bushings, and full pin and bushing kits at unbeatable wholesale prices.

Contact us now: Email sunny@xmgt.net for a custom price list, excavator track pins discounts, and shipping quotes. Our team responds within 24 hours—power up your fleet with GT reliability!

Frequently Asked Questions (FAQ)

What are excavator pins and bushings used for?
Excavator pins and bushings (also called track pins and bushings) connect track links in the undercarriage, enabling smooth pivoting in the pivotal pin joint system. They handle torque, impacts, and loads in excavators and dozers.

What materials are used in GT pin & bushing?
We use 45# carbon steel for durability, 40Cr for strength, and 20CrMnTi for superior wear resistance. Heat-treated to HRC50-60 with 3-8mm depth, plus polishing for low friction.

What is a sealed and lubricated track (SALT)?
Sealed and lubricated track (SALT) pins feature grease seals and self-lubricating bushings, reducing bushing lubrication needs and combating pin bushing wear by 50%.

How do I identify pin bushing wear or track pitch wear?
Check bushing internal diameter for expansion (>5%) or track pitch wear via link spacing. Signs include chain slack, noise, or derailment—replaced via bush and pin replacement promptly.

How to maintain track chain components?
Follow track chain maintenance: Grease track bushings bi-weekly, inspect undercarriage pins monthly, rotate tracks every 500 hours. Use hardness and wear resistance parts like ours for longevity.

What makes GT’s excavator track pins different?
Press-fit track components with induction hardening, self-lubricating bushings, and rigorous testing for track link pin reliability—proven in mining and construction worldwide.