GFT Series Travel Reducer
4 week ago
Product details
GFT series of compact high speed cranked shel reducer is a ideal speed reduce part in the rotating mechanism.Due to its compact structure, icould be used in the severely hard installation conditions.
The advanced designs as well as the process technology guarantee the high bearingcapacity and the operation liability . GFT series speed reducers not only meet the Bosch-Rexroth standards but also could offer the surrogate similar to Brevini, Tejin, Nachi, KYB,Fairield or Sauer according to the specific demands and design.For we have strong creative style of designcapacity, we could provide the customers with the consulting service and suitable type selection to find the optimal products resolution for the clients.
As per the design demand, the speed reducers could connect with the Bosch-Rexroth constant and variable hydraulic motors and at the sametime could match the other hydraulic motors if necessary. The input end of the reducers could be equipped with spring brake and the multi-platehydraulic release parking brake acording to different needs. The static braking torque of the brake goes with the hydraulic motor's input torque(generally 1.5 times bigger). According to different needs, some reducers could also be equipped with mechancallafalling of clutch to be towedby other equipment under emergency, by which the hydraulic components could avoid being damaged.
This type of reducers has been broadly used for the winches of the rotary drlling rg and also for the band rack driving.And they could also applyto the band track hoist, amplitude winches and band track driving, many kinds of band track drving for illing rig, road roller, wheels drving foralot work, power head and move drving forthe miling machine and the mine tunneling machine and also to the drving facity for shipping cranes,wharf and containers hoist. The products not only have gone to San y,XCM G and Zoomlion but also have been exported.
GFT Series Travel Reducer
High-Torque, Compact Final Drive System for Mobile Machinery
1. Product Overview
TheGFT Series Travel Reduceris aplanetary gear reduction unitdesigned for tracked and wheeled mobile machinery, providing high torque output and precise speed control for walking, steering, and propulsion systems. It integrates adual-stage planetary gear trainwith ahydraulic or electric motor interface, optimized for heavy-duty applications in construction, mining, agriculture, and material handling.
Key Features:
• High Torque Density: Rated for continuous torque up to150 kN·m(peak torque up to 220 kN·m).
• Compact Design: Radial dimensions reduced by 30% compared to traditional worm gear reducers.
• Modular Construction: Interchangeable gear stages, bearings, and seals for easy maintenance.
• Multi-Mounting Options: Flange, shaft, or hybrid mounting to fit various machinery designs.
• Sealed for Harsh Environments: IP67-rated housing with corrosion-resistant coatings.
2. Technical Specifications
【表格】
Parameter GFT Series (Typical Range)
Model Range GFT 30 – GFT 220
Gear Type Planetary (Helical/Bevel Options)
Reduction Ratio 20:1 – 150:1 (Customizable)
Input Speed 0–3,000 RPM (Hydraulic/Electric)
Output Speed 0–150 RPM (Dependent on Ratio)
Continuous Torque 30–150 kN·m (Model-Dependent)
Peak Torque 45–220 kN·m (150% Overload Capacity)
Backlash <8 arcmin (Standard) / <3 arcmin (Precision)
Efficiency 94–96% (Planetary Gear)
Weight 80–450 kg (Model-Dependent)
Operating Temp. -40°C to +80°C (Arctic/Desert Options)
Lubrication Lifetime Grease or Oil Bath (Optional)
3. Core Components
1. Planetary Gear Train:
• Sun gear, planet gears, and ring gear made of20CrNiMoA alloy steel(carburized and ground).
• Helical teeth for quiet operation (<65 dB(A)).
2. Output Bearing:
• Tapered roller bearings or cross-roller bearings for radial/axial load support.
3. Housing:
• Cast iron (FC300) or aluminum alloy (A356) with finned design for heat dissipation.
4. Sealing System:
• Triple-lip seals + Viton® O-rings for dust/water resistance.
5. Brake Integration:
• Optionalspring-applied hydraulic release brake(SAHR) or electromagnetic brake.
4. Applications
• Construction Machinery:
• Excavator travel drives, paver track systems, drill rig rotators.
• Mining Equipment:
• Surface miner propulsion, tunnel boring machine (TBM) steering.
• Agricultural Machinery:
• Combine harvester headers, sugar cane harvester tracks.
• Material Handling:
• Port crane slewing drives, forklift mast rotators.
• Defense Vehicles:
• Military tank steering gears, amphibious vehicle tracks.
5. Performance Advantages
• High Reliability: 50,000+ hours mean time between failures (MTBF) under proper use.
• Thermal Stability: Oil-cooled designs maintain operating temps below 75°C.
• Shock Load Resistance: Withstands sudden impacts (e.g., rock collisions in mining).
• Easy Maintenance: Quick-access inspection ports and replaceable seal kits.
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Ningbo Hengnuo Hydraulic Drive Co.,Ltd
Audited supplier
3 year
Main Product:
hydraulic motor,
gear box,
hydraulic pump,
hydraulic valve ,
hydraulic winch,
hydraulic system
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