Views: 0 Author: Site Editor Publish Time: 2026-09-26 Origin: Site
Mini excavators — Kubota, Yanmar, Takeuchi, Bobcat, John Deere compact models, and more — are the most numerous machines on jobsites worldwide. Their final drives work harder than their size suggests, and when a travel motor or final drive fails on a mini machine, the replacement decision is usually cost-critical.
This guide covers mini excavator final drive replacement: which travel motor lines matter, how to match the correct unit, and where BN Gears fits in.
Mini excavator final drives are compact assemblies where the travel motor and planetary gearbox work as one unit. Before ordering, confirm:
The brand and exact model (e.g., Bobcat E35, Yanmar B37 class, Kubota KX series)
The OEM part number stamped on the travel motor or gearbox
Whether you need the complete assembly, the travel motor, or a gearbox component
The spline/shaft configuration — mini machines vary by generation
For mini excavators, the travel motor is the heart of the final drive. BN Gears supplies aftermarket travel motors and components across the most common motor brands used on mini machines:
| Motor Brand | BN Gears Catalog |
|---|---|
| KYB | KYB Travel Motor catalog → |
| Nabtesco | Nabtesco Travel Motor catalog → |
| BOBCAT | BOBCAT Travel Motor catalog → |
| Yanmar | Yanmar Travel Motor catalog → |
| NACHI | NACHI Travel Motor catalog → |
| Rexroth | Rexroth Travel Motor catalog → |
Component example: Travel Motor Sun Shaft for Bobcat MX331 →
On mini excavators, repairing a worn final drive by replacing only internal components rarely restores full performance — the gearbox and motor wear together. If the travel motor is still serviceable, a gearbox-only replacement is the economical choice; if noise, leaks, and weak travel all appear together, replace the complete assembly.
Check final drive oil level every 250 operating hours
Change gear oil every 1,000 hours (or per manufacturer spec)
Inspect seals daily — mini machines work in mud, dust, and water more often than large excavators
Listen for whining or grinding during travel and investigate early
ISO 9001:2015 certified manufacturing since 2000
18,000 m² factory in Jiangmen, China — in-house heat treatment and machining
12,000+ parts covering 600+ construction machinery models, mini excavators included
Complete assemblies or individual components (sun shafts, gears, seals)
In-stock units processed and packed within 4–7 days, shipped worldwide
