Rexroth GFT36 GFT110 GFT9 Final Drive | GFT36T3B100 | Excavator Travel Motor Gearbox Assy

Excavator GFT Series Final Drive Travel Motor Gearbox Assembly

Product Overview: The GFT Series Final Drive Assembly is the power nucleus for crawler excavator and drilling rig travel systems. As a high-performance planetary gearbox, this unit integrates a high-pressure hydraulic motor with a multi-stage gear reduction system, engineered to provide massive tractive effort and reliability under extreme site conditions. This page features the complete spectrum: from the compact GFT9T2, the mainstream GFT36T3B100-12 for mid-size excavators, to the heavy-duty GFT110W3B21-XX assembly. These units are the premier choice for 6 to 50-ton class excavators, rotary drilling rigs, crawler cranes, and road milling machines.

Key Technical Advantages:

• Elite Torque Density: Utilizing multi-stage planetary structures (e.g., T3 for three-stage reduction) to achieve high ratios within a compact footprint, delivering superior climbing and mobility power.

• Highly Integrated Assembly: The Final Drive Assy combines the hydraulic motor, planetary gearbox, and multi-disc wet parking brake into a single unit, simplifying installation and extending service intervals.

• Heavy-Duty Load Resilience: The gearbox housing is crafted from high-strength casting materials with integrated oversized bearings to support crawler tension and machine weight shock loads directly.

• Precision Transmission Efficiency: Precision-ground and nitrided gears ensure low operational noise and mechanical efficiency exceeding 95%, contributing to lower fuel consumption.

• Target Applications: Travel drives for SANY, ZOOMLION, XCMG, CAT, and Komatsu excavators, crawler rig chassis, and paver propulsion systems.

Detailed Models & Parameters:

• Core Series: Rexroth GFT Series (Travel Gearbox).

• Model Keywords: GFT9T2, GFT36T3B100, GFT110W3B21, GFT36, GFT110.

• Technical Specs Decoding:

  • GFT9T2: Frame size 9, two-stage planetary reduction, optimized for compact crawler equipment.

  • GFT36T3B100-12: Frame size 36, three-stage reduction (T3), reduction ratio approx. 100, ideal for 20-30 ton excavators.

  • GFT110W3B21: Frame size 110 heavy-duty specification, W-series optimized for high-intensity travel cycles.

• Performance Specs: Maximum output torque spans from 9,000 Nm to 110,000 Nm.