KOMATSU PC45MR-3 PC55MR-3 Final Drive 22M-60-32500 22M-60-32501 Excavator Travel Motor Reduction Aftermarket

Heavy 6300 N·m Torque & 47.53:1 Reduction for 4.5–5.8T Komatsu Earthmovers. Direct OEM replacement TM06H / GM06H dual-displacement hydraulic travel motor complete with 47.53:1 planetary reduction gearbox, engineered specifically for Komatsu PC45MR-3 and PC55MR-3 mini excavators.

(Authority verified via Komatsu EPC parts catalogs & TM06H engineering blueprint specs)

(Direct engineering measurements from TM06H blueprint for Komatsu Dash-3 track frames)

(Cross-reference internal service components for Komatsu travel drive assembly 22M-60-32501 / TM06H)

Is your 5-ton Komatsu drifting off-line during travel or sluggish when tracking up trench spoil in high gear? Komatsu Dash-3 zero-tail excavators transmit high cyclic torque (6300 N·m) through the 47.53:1 planetary reduction hub. Operating under continuous 24.5 MPa working pressure, internal fluid bypass across the timing valve plate (Ref #34) bleeds pilot pressure away from the shift spool (Ref #2). The motor fails to kick down smoothly from 56 rpm to 31 rpm, causing track chatter and loss of low-speed breakout push. Installing our precision-metered 22M-60-32501 final drive guarantees 100% concentric 180 mm / 230 mm alignment, stops hydraulic bypass, and reinstates factory straight-line tracking.

Q: Will this TM06H final drive bolt directly onto my Komatsu PC45MR-3 without modifying hydraulic hoses? A: Yes. It matches OEM part numbers 22M-60-32501 and 22M-60-32500 directly. The 180 mm chassis register (9xM14 on 262 mm PCD), 230 mm sprocket register (12xM14 on 220 mm PCD), and G 1/2" main ports align seamlessly with your factory Dash-3 undercarriage.

Q: What is the mandatory startup lubrication protocol before running this drive? A: Pre-fill the hydraulic motor casing with fresh ISO VG 46 fluid through the G 1/4" drain port (T). Separately, fill the planetary gearbox with SAE 80W-90 extreme-pressure gear lubricant (1000 mL volume) up to the level check plug before starting the engine.

Q: How does 22M-60-32501 cross-reference with 22M-60-32500 and 22M-60-32502? A: 22M-60-32500, 22M-60-32501, and 22M-60-32502 are consecutive Komatsu factory part updates for the PC45MR-3 / PC55MR-3 platform, sharing identical 47.53:1 reduction gearing, 50 L/min flow rating, and mechanical mounting geometry for single-SKU inventory consolidation.

Q: What are the exact freight logistics specifications for export shipping? A: The crated assembly has a net weight of 62.0 kg (gross packed weight 64.0 kg) and measures 38 × 38 × 44 cm (0.063 CBM). Each drive is sealed in vapor corrosion inhibitor (VCI) poly wrap and bolted securely inside an ISPM-15 certified fumigated export wooden crate.