Rexroth GFT Series Hydraulic Travel Reducer Planetary Gearbox For Heavy Machinery

Wuhan Xinlaifu Hydraulic Equipment Co., Ltd. is one of the leading manufacturers and suppliers of rexroth gft series hydraulic travel reducer planetary gearbox for heavy machinery in China. With abundant experience, we warmly welcome you to buy high quality customized products at competitive price from our factory. Also, OEM&ODM service is available.

Type	GFT Series Planetary Reducer
Brand	XLF Hydraulic
Max Output Torque Range	9500–450000 Nm
Rated Working Pressure	35 MPa (350 bar)
Peak Pressure	Max 40 MPa (400 bar)
Mount Flange	SAE Standard Flange
Port Size	SAE Standard Ports
Built-in Parts	Integrated Parking Brake & Seals
Recommended Oil	ISO VG 220 Industrial Gear Oil

Models GFT 0009T2, GFT 0013T2, GFT 0017 T2/T3, GFT 0050 T3, GFT 0080 T3, GFT 0220 T3/R3 and GFT 0330 T3/T4 are heavy-duty hydraulic planetary reducers with 2/3/4-stage transmission structures, belonging to the GFT Series. Custom configuration and production coding are available to support diverse specification variants, including different gear stages, gear ratios, output forms, parking brake setups and sealing solutions. Adopting high-precision planetary drive technology and premium hardened gear teeth plus inner gear rings that guarantee reliable operation under high torque and harsh load conditions, these reducers serve as direct aftermarket replacements for original OEM reducers with fully matched installation dimensions and interface parameters.

The GFT Series represents premium high-efficiency planetary reducers, delivering stable high-torque output under a compact, space-saving casing. The matched hydraulic system features a standard working pressure of 350 bar, fully adapting to long-duration heavy-load operation. Deployed in severe service environments including open-pit mining, construction lifting, road paving, concrete works and agricultural operations, these reducers exhibit excellent load resistance and long-term operational durability. They act as the core hydraulic drive components for heavy-duty machinery such as excavators, crawler cranes, road rollers, pavers, mining equipment, agricultural machinery and marine & offshore lifting facilities. Designed with standard SAE heavy-duty mounting flanges and spline connections, plus a reinforced integral housing structure, the entire series resists frequent heavy shock loads and continuous mechanical vibration, perfectly fitting the harsh operating conditions of various mobile and industrial hydraulic equipment.

This reducer range supports a wide variety of customized structural variants, including tailored gear stages, special output shafts and spline profiles purpose-built to pair with different types of hydraulic motors and integrated hydraulic transmission assemblies. Custom versions can be engineered to remove conventional intermediate connecting components, enabling direct assembly with matched hydraulic drive systems via dedicated spline and interface designs. They are ideal for hydraulic drive systems with limited installation space, or equipment adopting integrated modular and lightweight design concepts, including electro-hydraulic power module applications in electrified construction machinery.

1. Integrated Structure Design - An Ideal Choice For Integrated Drive & Electrified Systems

GFT Series Planetary Hydraulic Reducer adopts optimized integrated structure design, which is a dedicated configuration for integrated drive and electrified hydraulic systems:

Integrated connecting structure: Custom spline and shaft end design are adopted. External radial loads are shared by the matching hydraulic motor assembly on the user's equipment; Direct integration with hydraulic motors & drive assemblies: The reducer can be directly flange-mounted to various fixed / variable displacement hydraulic motors without additional support bearings or couplings, perfectly matching the electro-hydraulic power module; Compact overall dimension: The streamlined multi-stage planetary structure greatly shortens the overall installation size, making it particularly suitable for equipment with extremely limited installation space; Easy installation: Standard SAE heavy-duty mounting dimensions and multi-bolt fixed flange layout enable seamless matching with user equipment and ensure excellent concentricity during operation. Besides, the modular integrated design supports multiple reducers tandem installation, further expanding system configuration flexibility.

2. GFT Series - High Performance Planetary Hydraulic Reducer

The GFT Series stands for premium high-performance planetary hydraulic reducers in the product lineup:

High torque density: Delivers stable high torque output within a compact housing. The matched hydraulic system features a standard continuous working pressure of 350 bar for all models; Advanced planetary gear & housing assembly: Equipped with optimized 2/3/4-stage planetary transmission and reinforced hardened gear teeth & inner gear ring structure, it achieves higher mechanical efficiency and strong resistance to shock and vibration; High-stability gear meshing & sealing technology: Precisely machined gear sets maintain stable meshing performance with automatic wear compensation, keeps excellent transmission efficiency during long-term operation and effectively reduces power loss; Harsh condition adaptability: Capable of working stably under rated continuous pressure and long-duration heavy load, adapting to a wide temperature range (-20°C ~ +45°C) and frequent load changes. It performs reliably on construction, mining, marine, road and agricultural machinery under severe working conditions such as dust, salt spray and heavy vibration.

Q: What are the differences between GFT, GFT-N and GFT-W series? Which equipment are they suitable for?

A: GFT and GFT-N are travel reducers with outer rotating housing, specially designed for the travel drive of tracked equipment, such as excavators, crawler cranes, road rollers, pavers, mining tracked vehicles and agricultural tracked machinery. GFT-W is a winch reducer adopting an internal drum compact structure for winch mechanisms, widely used for truck cranes, port cranes, marine deck winches, offshore platform equipment and drilling rigs.

Q: Can GFT series be used as direct replacement for original imported reducers? Are the dimensions fully matched?

A: Yes, it can serve as a direct aftermarket replacement for original imported reducers of the same specifications. All mainstream models adopt 1:1 matching on overall dimensions, mounting flanges, bolt holes and spline parameters. No modification on equipment is required, which enables easy assembly and disassembly for equipment maintenance.

Q: Which types of hydraulic motors can be matched with GFT reducers? Is flange connection available?

A: This series is compatible with multiple fixed and variable displacement hydraulic motors including A2FE, A6VE, A10VE, A6VM and A2FM. Equipped with standard SAE flange interfaces, it can be directly flange-mounted with hydraulic motors without additional couplings or support bearings.

Q: Does the GFT series come with multi-disc parking brake? How to calculate the brake torque?

A: Most models are equipped with or optional multi-disc parking brakes (only for static braking, not for dynamic braking). The minimum brake torque of travel reducers equals 1 times the input torque; the minimum brake torque of GFT-W winch reducers equals 1.5 times the input torque.

Q: Can you customize gear ratio, mounting interface and other special specifications?

A: Full customization is available. We can adjust 2/3/4-stage transmission structure, gear ratio, output form, mounting holes, sealing configuration and brake parameters according to customer requirements, to adapt to various non-standard hydraulic transmission systems and integrated equipment.

Q: What lubricating oil is recommended for GFT reducers? What are the daily maintenance requirements?

A: We recommend 220# LS2 industrial gear oil or Great Wall L-CDK220 gear oil. For daily maintenance, just regularly check the oil level, fasten bolts and inspect abnormal noise. The first oil change is suggested after 150 hours of operation. Regular oil replacement is required under normal working conditions, and no complicated maintenance is needed.

Q: Why does the reducer leak oil? How to troubleshoot it?

A: Oil leakage is usually caused by loose bolts or aging seals. First, tighten all housing flange bolts completely. If the leakage persists, the sealing parts are worn. Please contact us to replace original seal kits, and do not disassemble the gear structure privately.

Q: What is the warranty period of GFT reducers?

A: We provide 12-month international warranty starting from the date of goods receipt. Within the warranty period, we offer free spare parts and technical support for product failures caused by non-human damage under normal working conditions. Damage caused by human error or improper use is not covered by the warranty.

1. GFT Travel Reducer

1.1 General Model, Output Torque & Gear Ratio

1.2 Detailed Technical Parameters

Small & Medium Size Models

Medium & Large Size Models

Extra Large Size Models

1.3 Overall Dimensions, Mounting Holes & Weight (Unit: mm / kg)

Medium Size Models

Extra Large Size Flange & Interface Dimensions

1.4 GFT 2160 Travel Reducer

Structure: 2-stage planetary gear mechanism, built-in swash plate piston motor

Configuration: Equipped with 2-speed motor with automatic shifting

Working Pressure: 350 bar

2. GFT-N Travel Reducer

2.1 Technical Parameters

2.2 Overall Dimensions & Weight (Unit: mm / kg)

3. GFT-W Winch Reducer

3.1 Basic Model Parameters

3.2 Detailed Technical Parameters

3.3 Overall Dimensions, Interface & Weight (Unit: mm / kg)

3.4 Rear Support Bearing Dimensions (Unit: mm)

4. GFB Slewing Reducer

4.1 General Parameter Overview

4.2 Detailed Technical Parameters

4.3 Overall Dimensions & Weight (Unit: mm / kg)

4.4 GFB 2160 Slewing Reducer

Structure: 2-stage planetary gear mechanism, built-in swash plate slewing drive motor

Max Output Torque: 14500 Nm

Motor Displacement: 170 cm³

Max Working Pressure: 350 bar

Applicable Load Capacity Class: 23 ~ 25 ton

5. Matched Hydraulic Motors

5.1 A2FE Fixed Displacement Hydraulic Motor (Unit: mm / kg)

5.2 A6VE Variable Displacement Hydraulic Motor (Unit: mm)

5.3 A10VE Variable Displacement Hydraulic Motor (Unit: mm / kg)

5.4 A6VM Variable Displacement Hydraulic Motor (Unit: mm / kg)

5.5 A2FM Variable Displacement Hydraulic Motor (Unit: mm / kg)

6. Calculation Formulas & Duty Coefficients

6.1 Torque Calculation Formulas

Basic Output Torque: T2​=2F×Dw​​

Corrected Output Torque: T2K​=T2​×K Restriction: T2K​≤T2​

Definition:

T2​: Output Torque (Nm)

F: Single Rope Pull (N)

Dw​: Max Winding Diameter (m)

T2K​: Corrected Output Torque (Nm)

K: Duty Cycle Coefficient

6.2 Minimum Parking Brake Torque Rules

GFT Travel Reducer: Min Brake Torque = 1 × Input Torque

GFT-W Winch Reducer: Min Brake Torque = 1.5 × Input Torque

GFB Slewing Reducer: Min Brake Torque = 1.3 × Input Torque

6.3 Duty Cycle & Load Class Coefficient (K)

7. Selection Parameters

7.1 Wheel Type Travel Reducer

Equipment type, Equipment weight, Drive wheel quantity, Total wheel quantity, Hub size, Radial load, Traction force, Axial load, Wheel diameter, Load radius, Wheel width, Mounting length, Max output torque, Max travel speed, Output speed, Max system pressure, Working pressure, Gear ratio, Climbing capacity, Multi-disc parking brake, Fixed displacement hydraulic motor, Variable displacement hydraulic motor, Displacement specification, Brake valve, No-load / Load parameters, Annual demand, Special operating conditions

7.2 Track Type Travel Reducer

Equipment type, Equipment weight, Total traction force, Track type, Sprocket pitch diameter, Track width, Radial load, Max output torque, Output speed, Working pressure, Max system pressure, Gear ratio, Max travel speed, Motor model, Brake valve, Torque / Speed / Cycle ratio under typical working conditions

7.3 Winch Reducer

Equipment type, Lifting load, Single rope pull, Rope speed, Rope diameter, Rope groove type, Rope pitch, Winding layers, First layer winding diameter, Flange dimension, Output torque, Input torque, Input speed, Output speed, Gear ratio, Working pressure, Max input flow, Motor model, Brake valve, Pawl, Drum matching parameters

7.4 Slewing Reducer

Equipment type, Lifting load, Upper structure speed, Upper structure torque, Gear ratio, Input torque / speed, Output torque / speed, Gear parameters (Tooth number, Module, Tooth width, Pressure angle), Spline specification, Brake torque, Working pressure, Ambient temperature, Mounting form, Classification society standard, Annual demand, Special operating conditions

The GFT series gearbox is applied in engineering machinery replacement cases. If you need substitutes for other models, please provide the model, type, nameplate, and actual photos.

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