Komatsu Final Drive Replacement Guide: PC200 to PC400 Series

Introduction

Komatsu excavators are workhorses on construction sites worldwide. The PC200 alone is one of the most popular 20-ton excavators ever built. When its final drive wears out, you need a reliable replacement fast.

This guide covers everything about Komatsu final drive replacement — from PC130 mini excavators to PC450 heavy machines.

Popular Komatsu Models & Final Drive Part Numbers

Browse our complete Komatsu excavator parts catalog for all models.

GM35VL: The Most Common Komatsu Final Drive

The GM35VL is the final drive assembly used across four generations of Komatsu PC200 excavators (PC200-5 through PC200-8). Key specifications:

• Compatible motors: Komatsu travel motor GM35VL

• Gear type: 2-stage planetary reduction

• Material: Forged alloy steel, case-hardened gears

• Seal type: Dual-cone floating seals

• Weight: Approximately 120 kg

Komatsu Final Drive Maintenance Tips

1. Check gear oil every 250 hours — Low oil is the #1 cause of premature failure

2. Use Komatsu-spec gear oil — TO10 or equivalent

3. Inspect track tension — Over-tensioned tracks put extra load on final drives

4. Clean debris from undercarriage — Mud and rocks trap heat and wear seals

Why Komatsu Owners Choose BN Gears

• Direct bolt-on replacement — no modifications needed

• Same planetary gear ratios as OEM

• 12-month warranty

• Factory-direct pricing (no dealer markup)

• Ships worldwide from our Jiangmen, China factory

Get a quote for your Komatsu final drive →