Редуктор хода 172A64-73300 для мини-экскаватора Yanmar VIO17 VIO17-A

Travel Motor Final Drive for Yanmar VIO17 VIO17-A | OEM Part No. 172A64-73300

1. Product Overview
The 172A64-73300 is an integrated propulsion unit featuring a high-efficiency hydraulic travel motor and a multi-stage planetary reduction gearbox. As the primary drive component for the Yanmar VIO17 series, it is designed to deliver the precise tracking power and high torque necessary for a 1.7-ton machine. Its compact "short-profile" design is optimized for zero tail swing machines, ensuring the motor fits perfectly within the track frame without protruding, thereby protecting it from external impacts.

2. Technical Specifications & OEM Part Numbers
This unit is a 100% direct "bolt-on" replacement for Yanmar factory part numbers.

Yanmar Part Number: 172A64-73300 (also replaces various sub-series equivalents for the VIO17 frame).

Machine Fitment:

Yanmar VIO17 (Zero Tail Swing)

Yanmar VIO17-A

Yanmar VIO17-P

Compatible with both fixed and variable-width undercarriage models.

Core Features:

Motor Type: Variable displacement axial piston motor with integrated 2-speed travel (High/Low) switching.

Reduction System: High-torque planetary gears manufactured from induction-hardened alloy steel.

Mechanical Brake: Integrated spring-applied, hydraulic-release parking brake for safety on inclines.

3. Why Partner With a 13-Year Industry Expert?
Hydraulic Synchronization: We understand the specific flow requirements of the VIO17’s hydraulic pump. Our motors are calibrated to ensure the machine tracks perfectly straight, eliminating the "drift" often found in lower-quality aftermarket units.

Rigorous Load Testing: Every unit undergoes a 100% performance bench test. We verify high-pressure seal integrity, brake holding torque, and smooth 2-speed shifting before the unit leaves our facility.

OEM-Grade Materials: Our final drives utilize premium "Duo-Cone" floating seals and high-load bearings, extending the service life in harsh mud and water conditions.

Global Rapid Logistics: Secured in reinforced, export-standard packaging to prevent transit damage. We offer express delivery via DHL, FedEx, or UPS, typically arriving in 3 to 7 business days.

4. Critical Installation & Maintenance Protocol
Gear Oil Commissioning (Essential): Final drives are often shipped without gear oil for safety. You must fill the planetary gearbox with the correct volume of SAE 80W-90 gear oil before operation.

Case Drain Verification: Ensure the case drain line is clear and correctly connected. High backpressure in the motor case is the leading cause of shaft seal failure and internal motor damage.

Hydraulic Flushing: If the previous motor failed due to internal breakage, you must flush the hydraulic lines and tank. Residual metal shavings can destroy a new motor within minutes of startup.

Bleeding Trapped Air: After installation, lift the track off the ground and run the motor at low speed in both directions for several minutes to purge air from the hydraulic circuit.

5. Ordering & Professional Support
Fitment Verification: To ensure 100% accuracy, please provide your Machine Serial Number and the number of sprocket mounting holes (e.g., 9-hole or 12-hole).

Instant Quote: Contact us today for up-to-date pricing, tiered quality options, and current stock status.

Technical Guidance: Our expert team is available 24/7 to provide professional advice on installation, hydraulic pressure settings, and troubleshooting.