Description
Tatan HMGC32 9080044 Swing Motor Assembly Overview
The Tatan HMGC32 9080044 Swing Motor assembly is a fixed-displacement axial piston hydraulic motor. It is fully compatible with Hitachi EX200-1 20-ton excavators. This unit serves as a direct fit replacement for worn swing motors, resolving issues related to upper carriage drift, weak slewing torque, and internal casing pressure bypass.
Operating under hydraulic flow from the main hydraulic pump and powered by the 6BD1T diesel engine, this HMGC32 motor incorporates a bimetal valve plate, a mechanical parking brake pack, and dual anti-reaction shock relief valves. It connects directly to the EX200-1 swing reduction gearbox.
Technical Specifications: HMGC32 9080044 Swing Motor
| Product Category | Swing Motor Assembly | Warranty | 12 Months |
| Specific Motor Model | HMGC32 Axial Piston Motor | Brand Name | Tatan |
| Application | Hitachi EX200-1 Excavator | OEM Part Number | 9080044 |
| Interchange Part Number | 9069736 / 9069737 / 9069738 | Place of Origin | Guangdong, China |
| Rated Pressure | 27.5 MPa (275 bar) | Pilot Control Pressure | 3.9 MPa (Brake Release) |
| Brake Type | Wet Multi-Disc Parking Brake | Relief Valve | Dual Anti-Reaction Shock Valves |
| Factory Tested | 100% Bench Holding Torque Tested | Quality Status | 100% Brand New Assembly |
| Hydraulic Fluid Spec | ISO VG 46 / VG 68 Anti-Wear Oil | Packaging Standard | Fumigated Wooden Crate |
Supported Excavator Machinery Brands
Tatan manufactures and supplies replacement swing motors, reduction pinions, and internal rotating kits for major heavy equipment builders:
Troubleshooting Guide: EX200-1 Swing Motor
Diagnostic reference for HMGC32 9080044 swing motor symptoms on Hitachi EX200-1 excavators:
| Hydraulic Symptom | Technical Cause Analysis | Solution |
|---|---|---|
| 1. Upper carriage drifts when parked on incline | Mechanical parking brake friction discs glazed or brake release piston seal leaking pilot pressure. | Replace with Tatan 9080044 complete swing motor assembly with pre-seated brake pack. |
| 2. Shudder / shaking when stopping swing motion | Anti-reaction check valve poppet contamination or swing cushion relief valve spring fatigue. | Clean relief cartridges, reset 27.5 MPa relief pressure, or install new motor assembly. |
| 3. Weak swing acceleration and high case temperature | Friction scoring across bimetal valve plate and cylinder block face allowing fluid bypass into case drain. | Install Tatan new 9080044 swing motor. Flush hydraulic lines and replace return filter. |
Packaging & Logistics Specifications
To ensure damage-free international transport, every Tatan HMGC32 9080044 Swing Motor undergoes anti-rust oiling, waterproof plastic sealing, and solid export wooden box packaging.
HMGC32 9080044 Swing Motor FAQ & Cross-Reference
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.
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