A6VM140 Hydraulic Motor | WA320-5 WA320-6 Loader | 419-18-41200 419-18-41300 | Rexroth Variable Motor

A6VM140 Hydraulic Motor for Komatsu WA320-5 & WA320-6 Loaders

Product Overview: This high-performance A6VM140 series variable displacement axial piston motor is specifically engineered for Komatsu WA320-5 and WA320-6 wheel loaders. As a critical component of the HST (Hydrostatic Transmission) system, this motor corresponds to Komatsu OEM part numbers 419-18-41200 and 419-18-41300. The bent-axis design, combined with advanced EP2 (Electric Proportional) and HA1 (High-Pressure Related) control logic, ensures the loader delivers massive torque for digging while achieving high-speed efficiency during transit.

Key Technical Advantages:

• Precise OEM Compatibility: A perfect drop-in replacement for original Komatsu WA320 travel motors, ensuring 100% compatibility with flanges, shafts, and porting for seamless installation.

• Dual Control Logic (EP2/HA1):

  • EP2: Precisely adjusts displacement via electrical signals to optimize fuel efficiency and machine response.

  • HA1: Automatically senses load pressure changes, increasing displacement under heavy loads to maximize rim pull.

• Superior Power Density: Delivers a robust 140cc displacement within a compact frame, rated for pressures up to 400 Bar to withstand grueling work environments.

• Extreme Reliability: Built on Rexroth Series 63 technology, featuring optimized bearings and seals that significantly extend service life in closed-loop HST circuits.

• Target Applications: Travel drives for Komatsu WA320-5 and WA320-6 loaders, and heavy-duty hydrostatic transmissions for construction machinery.

Detailed Models & Parameters:

• Core Series: Rexroth A6VM Series 63 (Bent Axis Variable).

• Technical Spec Decoding:

  • A6VM140EP2/63W-VXB010TA-S: Equipped with electric proportional regulation, optimized for modern electronic HST systems.

  • A6VM140HA1R2/63W-VXB017CA-S: Features high-pressure related automatic regulation, enhancing heavy-duty climbing performance.

• Komatsu OEM Part Numbers:

  • 419-18-41200

  • 419-18-41300

• Core Performance Specs:

  • Displacement: 140 cm³/rev.

  • Rated Pressure: 400 Bar (5800 PSI) / Peak Pressure: 450 Bar.

  • Compatibility: Specifically for Komatsu WA320-5, WA320-6 Series.