6668135 6655125 Final Drive for Bobcat X225 | Nachi PHV-2B Hydraulic Travel Motor

High-Torque Tractive Drive for 2.5-Ton Earthmovers. OEM-spec replacement Nachi PHV-2B hydraulic travel motor integrated with a heavy-duty planetary reduction gearbox, engineered specifically for Bobcat X225 and 225 mini excavators.

1. Technical Operating Specifications

(Cross-referenced & verified via OEM parts databases for Google Rich Snippets)

2. Resolving Bobcat X225 Drive Hub Leaks & Planetary Pre-Load Loss

Seeing gear lube leaking behind your drive sprocket or hearing metallic grinding under heavy blade push? The Bobcat X225 platform generates high drawbar pull in rugged landscaping and site clearing. Over hundreds of hours, continuous ground-level shock loads widen the end-play on internal hub bearings. This axial play tilts the duo-cone floating seals, allowing abrasive sand into the gearbox while washing out gear lubricant. Replacing your fatigued unit with a factory-sealed 6668135 assembly restores exact bearing pre-load, prevents cross-contamination, and reinstates full 2420 N·m tractive breakout force.

3. Frequently Asked Questions (Technical & Commercial)

For Machine Owners & Operators (C-End Insights)

Q: Will this PHV-2B assembly mount directly onto my Bobcat X225 track frame? A: Yes. It is a direct bolt-on replacement matching OEM reference 6668135. The chassis mounting pilot, sprocket bolt PCD, and hydraulic hose line locations align directly with your original machine setup with no fabrication needed.

Q: Can I run standard hydraulic oil in the planetary gearbox section? A: No. The hydraulic motor and the planetary gearbox operate in separate chambers. The hydraulic motor shares fluid with your excavator's central reservoir, whereas the planetary reduction section must be filled with heavy-duty gear lubricant (such as SAE 80W-90) through the designated filler plug.

For Equipment Dealers & Repair Shops (B-End Insights)

Q: How does part number 6655125 cross-reference with 6668135 on the Bobcat 225? A: 6655125 and 6668135 are Bobcat factory part revisions for the 2.5-ton chassis. Both share identical internal displacement profiles (670.8 cm³/rev) and mechanical mounting geometry, allowing single-SKU inventory consolidation.

Q: How is international shipment handled to prevent internal bearing pitting during ocean transit? A: Each drive unit is internally coated with corrosion-inhibiting oil, vacuum-sealed in a thick polyethylene vapor barrier bag, and secured with custom mounting blocks inside a certified fumigated wooden crate.