Description
KMF 706-7G-01030 Swing Motor Assembly by Tatan Overview
The KMF 706-7G-01030 Swing Motor assembly manufactured by Tatan is a heavy-duty fixed-displacement axial piston hydraulic unit belonging to our Swing Motor Assembly classification. Engineered specifically for Komatsu PC800-8, PC800LC-8, and PC850-8 85-ton mining excavators, replacing your worn swing motor with a Tatan complete assembly eliminates upper carriage drifting on steep quarry inclines, restores instantaneous twin-motor swing braking torque, and cures internal casing pressure bypass across demanding quarry and open-pit mining applications.
Operating in synchronized dual-motor pairs under direct pressure flow from the excavator’s main hydraulic pump and routed through the PC800-8 main control valve, every factory-tested KMF 706-7G-01030 Swing Motor incorporates precision micro-lapped bimetal valve plates, a hydraulic-release parking brake pack, and dual anti-reaction shock relief valves, ensuring 100% direct bolt-on installation with swing reduction gearboxes and chassis pilot lines.
Key Attributes & Technical Parameters for KMF 706-7G-01030 Swing Motor
| Product Category | Swing Motor Assembly | Warranty | 1 Year / 12 Months |
| Specific Valve Model | Komatsu KMF Dual Heavy-Mining Swing Motor | Brand Name | Tatan |
| Compatible Equipment | Komatsu PC800-8 | PC800LC-8 | PC850-8 | OEM Part Number | 706-7G-01030 / 706-7G-01031 |
| Matched Engine Series | Komatsu SAA6D140E-5 Heavy Engine (363 kW) | Place of Origin | Guangdong, China |
| Max Relief Pressure | 28.4 MPa (284 bar / 4120 PSI) | Pilot Control Pressure | 3.9 MPa (39 bar Brake Release) |
| Spool Precision Spec | Micro-Lapped < 0.003 mm Clearance | Quality Status | 100% Brand New Complete Assembly |
| Machinery Test Report | Provided (100% Bench Tested) | Video Outgoing-Inspection | Provided Before Shipping |
| Hydraulic Fluid Spec | ISO VG 46 / VG 68 Anti-Wear Oil | Packaging | Export Wooden Box Packaging |
Supported Excavator Machinery Brands & Swing Motor Coverage
In addition to Komatsu, Tatan manufactures and supplies replacement swing motors, reduction pinions, and internal rotating kits for major heavy equipment builders:
85-Ton Super-Mining Dual-Swing Drive Engineering & Slew Ring Protection
Controlling the extreme rotational kinetic energy of 80~85 ton excavators swinging 5.0 m³ heavy rock buckets requires specialized metallurgical hardening and dual-motor flow balance. When installing the KMF 706-7G-01030 Swing Motor, Tatan delivers heavy-duty complete slewing drives, wet brake packs, and shock-cushion hydraulic assemblies across diversified earthmoving fleets:
🛑 Zero Slope Drift
Heavy multi-disc wet friction plates lock rotation on 30-degree slopes immediately upon neutral joystick return.
🛡️ Dual Ring Gear Safety
Dual factory-calibrated 28.4 MPa anti-reaction shock valves absorb stopping inertia, protecting slewing reduction ring gears under 5.0 m³ bucket loads.
❄️ Thermal Stability
Micro-lapped bimetal valve plates eliminate high-pressure casing bypass, keeping operating temperatures safely under 80°C.
Application Scenarios & Buyer Value
When upgrading or replacing your 80-ton excavator rotation drive with our KMF 706-7G-01030 Swing Motor, buyers achieve maximum operational uptime and flow control:
| Application Scenario | Value Delivered to Buyer |
|---|---|
| Komatsu PC800-8 Motor Replacement | 1:1 direct bolt-on installation eliminates carriage drift on slopes and restores snappy, synchronized boom swing positioning. |
| Hydraulic Overhaul Workshops | Avoids the complex labor of brake disc shimming and barrel lapping; saves mechanic hours with a pre-adjusted unit. |
| Mining & Quarry Fleet Operations | Heavy-duty forged pistons and anti-rebound valves withstand harsh shock loads during high-speed continuous truck loading. |
| Heavy Equipment Parts Stockists | Fast-moving, high-demand 85-ton swing motor inventory ready for immediate shipment to minimize customer downtime. |
KMF 706-7G-01030 Swing Motor OEM Diagnostic & Troubleshooting Guide
Use this OEM manual hydraulic diagnostic guide to troubleshoot swing motor symptoms on your Komatsu PC800-8 excavator:
| Hydraulic Symptom | Technical Cause Analysis | Tatan Factory-Grade Solution |
|---|---|---|
| 1. Dual motors out of sync causing swing chatter & gear clunking | One motor experiencing valve plate wear or internal casing bypass, creating torque imbalance between front and rear drives. | Replace with factory-matched Tatan 706-7G-01030 motor units tested together on test bench for equal displacement flow. |
| 2. Upper carriage creeps / drifts when parked on side incline | Mechanical parking brake friction discs glazed or brake release piston seal leaking pilot pressure into case drain under heavy static loads. | Replace with Tatan 706-7G-01030 complete swing motor assembly with factory pre-seated heavy-duty brake pack. |
| 3. Violent shudder / shaking when stopping swing motion | Anti-reaction check valve poppet contamination or cushion relief valve spring fatigue failing to dampen inertia under 5.0 m³ rock loads. | Ultrasonic clean relief cartridges, reset 28.4 MPa relief pressure, or install new Tatan complete motor assembly. |
| 4. Complete loss of rotation while travel/boom functions work | Brake release delay valve stuck closed preventing 3.9 MPa pilot pressure from compressing brake release springs. | Check brake pilot pressure at motor port, clean delay valve shuttle, or replace swing motor assembly. |
Transport Packaging & Fast Global Shipping
To ensure 100% damage-free international transport, every Tatan KMF 706-7G-01030 Swing Motor unit undergoes anti-rust oiling, waterproof plastic sealing, and solid export wooden box packaging:
KMF 706-7G-01030 Swing Motor FAQ & Related Categories
🔗 Frequently Purchased Together with PC800-8 Swing Motor:
* Note: Wholesale Reference Price Starts From $300.00. Please contact Gavin for a final customized quote.
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