6668135 6677665 Final Drive for Bobcat 220 325G 328G | KYB MAG-26VP Travel Motor (9-Hole 210mm)

Heavy 4200 N·m Torque & 210mm Spigot Fitment for 3.0–4.0T Bobcat Earthmovers. OEM-standard replacement KYB MAG-26VP dual-displacement hydraulic travel motor complete with 52.7:1 planetary reduction gearbox, engineered specifically for 9-hole 210mm register Bobcat 220, 325 G, 328 C, and 328 G mini excavators.

1. Technical Operating Specifications

(Authority verified via Bobcat parts cross-reference & KYB hydraulic engineering databases)

2. Verified Undercarriage Fitment Dimensions

(Critical 9-hole / 210 mm pattern verified for Bobcat G-Series track frames)

3. Resolving Bobcat 325G/328G Radial Play & Hub Seal Tilt

Seeing gear lube leaking behind your drive sprocket or hearing metallic binding during tight counter-rotations? Bobcat G-Series machines deliver a massive 4200 N·m tractive breakout force. Aggressive skid-steering across concrete or rocky demolition sites subjects the 210 mm sprocket pilot to severe radial leverage. Over high operating hours, internal planetary tapered bearings develop axial end-play, tilting the duo-cone floating seals and allowing gear oil to wash out. Installing our precision-machined 6668135 / 6677665 final drive restores exact 210 mm spigot concentricity, stabilizes 52.7:1 planetary gear meshing, and reinstates full low-speed gradeability.

4. Frequently Asked Questions (Technical & Commercial)

For Machine Owners & Operators (C-End Insights)

Q: How do I distinguish between this 9-hole 210mm drive and the 12-hole version on my Bobcat 328? A: Measure the inner centering pilot hole of your drive sprocket and count the frame mounting bolts. If your sprocket pilot inner diameter is 210 mm and uses 9 mounting holes (φ12 mm), your machine requires this heavy-duty MAG-26VP unit. (If it has 12 holes, you need part 6692633).

Q: What is the critical startup lubrication procedure for this drive? A: Pre-fill the hydraulic motor casing with fresh hydraulic fluid through the top casing drain port. Separately, fill the planetary gearbox with SAE 80W-90 extreme-pressure gear lubricant up to the horizontal oil level plug before starting the machine.

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

Q: Can part number 6677665 interchange directly with 6668135 across our inventory? A: Yes. 6668135 and 6677665 are interchangeable factory part revisions for the Bobcat 220 / 325G / 328G 9-hole undercarriage platform, sharing identical 210 mm pilot dimensions, 52.7:1 reduction ratios, and 40 L/min flow capacity.

Q: What is the export packaging standard for overseas freight? A: Each drive unit is treated with internal anti-corrosion fluid, hermetically heat-sealed in heavy vapor corrosion inhibitor (VCI) poly barrier wrap, and bolted securely inside an ISPM-15 certified fumigated export wooden crate built for container and air cargo handling.