20U-60-12200 20U-60-23320 Final Drive for Komatsu PC50UU-1 PC50UU-2 | TZ512B1000-01 Travel Motor

Massive 8312 N·m Torque & PHV-4B Drive Platform for 5.0T Komatsu Earthmovers. Direct OEM replacement high-displacement hydraulic travel motor complete with integrated planetary reduction gearbox, engineered specifically for Komatsu PC50UU-1 and PC50UU-2 zero-tail-swing mini excavators.

1. Technical Operating Specifications

(Authority verified via Komatsu EPC parts catalogs & Teijin/Nachi hydraulic databases)

2. Resolving Komatsu PC50UU Offset-Digging Power Loss & Shift Stiction

Is your PC50UU losing climbing push during zero-tail trenching, or veering when moving in high gear? Komatsu PC50UU offset-boom excavators subject final drives to intense lateral pressure variations when digging flush against building foundations. Operating at 26.5 MPa, internal bypass across worn distribution timing plates (TZ5350A2009-00) starves rotating piston shoes (TZ510B2105-00), reducing low-speed breakout torque well below the factory 8312 N·m threshold. Simultaneously, contamination in internal orifice plugs (TZ300B2044-00) traps the motor in sluggish single-speed mode. Installing our precision-metered 20U-60-23320 final drive restores full 26.5 MPa volumetric compression, eliminates steering drift, and delivers synchronized dual-speed tracking.

3. Exploded View & Internal Component Breakdown

(Cross-reference internal service parts for Komatsu / Teijin travel drive group 20U-60-23320 / TZ538B200001EU)

4. Frequently Asked Questions (Technical & Commercial)

For Machine Owners & Operators (C-End Insights)

Q: Will this final drive bolt directly onto my Komatsu PC50UU-2 without modifying hydraulic hose lines? A: Yes. It matches factory OEM part numbers 20U-60-23320 and 20U-60-12200 directly. The chassis mounting pilot flange, drive sprocket register, and main forward/reverse/drain hydraulic ports align seamlessly with your existing PC50UU track frame.

Q: Can I rebuild my existing motor using individual parts like TZ512B2004-00 and TZ510B2105-00? A: While replacing internal piston kits (25) and cylinder blocks (23) restores volumetric seal, severe internal wear often contaminates the planetary reduction hub with fine bronze debris. Installing a complete pre-calibrated assembly (20U-60-23320) guarantees factory clearances and full 12-month warranty protection.

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

Q: How does 20U-60-12200 cross-reference with 20U-60-23320 and TZ512B1000-01? A: 20U-60-12200, 20U-60-23320, 20U-60-23330, and 20U-60-23310 are consecutive Komatsu factory part updates for the PC50UU-1/2 platform, corresponding directly to manufacturer casting codes TZ512B1000-01 and TZ538B200001EU with identical 2131.6 cm³/rev PHV-4B displacement and 8312 N·m torque ratings.

Q: What is the packaging and export freight preservation standard? A: Each drive unit is internally treated with rust-inhibiting transit fluid, sealed inside 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.