TMVW TMT Series Hydraulic Orbital Motor TMT470 151Z3243 TMT470FLV 11026042 TMT 470V 151Z3305

Product Overview

The TMT470 Series hydraulic motor (encompassing TMT470 151Z3243, TMT470FLV 11026042, and TMT 470V 151Z3305 variants) is a high-performance heavy-duty low-speed high-torque orbital motor engineered for the most demanding industrial applications. Featuring an advanced Geroler gear set with disc valve distribution, this motor delivers reliable performance under extreme pressure and heavy-load conditions.

With a displacement of 477.3 cm³/rev, the TMT470 achieves a maximum continuous torque of 1760 N·m and peak torque up to 2735 N·m at 250 bar continuous pressure drop (350 bar intermittent). The TMT470 series is 100% interchangeable with Danfoss TMT series motors — requiring no modification to mounting flanges, port threads, or output shaft dimensions. Every motor undergoes 100% simulated real-world condition testing before shipment.

Technical Specifications

TMT 470 (Standard):

• Geometric Displacement: 477.3 cm³/rev [29.13 in³]

• Max. Speed (Continuous): 270 rpm

• Max. Speed (Intermittent): 320 rpm

• Max. Torque (Continuous): 1760 N·m [15,580 lbf·in]

• Max. Torque (Intermittent): 2420 N·m [21,420 lbf·in]

• Max. Peak Torque: 2735 N·m [24,210 lbf·in]

• Max. Output (Continuous): 37 kW [50 hp]

• Max. Output (Intermittent): 49 kW [66 hp]

• Max. Pressure Drop (Continuous): 250 bar [3,630 psi]

• Max. Pressure Drop (Intermittent): 350 bar [5,080 psi]

• Max. Flow (Continuous): 125 L/min

• Max. Starting Pressure (Unloaded Shaft): 6 bar [90 psi]

TMT470FLV (Brake Valve Version, 11026042):

• Geometric Displacement: 470 cm³/rev

• Mounting Flange: 4-bolt, spigot Ø180mm

• Output Shaft: 17-teeth splined, Ø38.1mm, 12/24 pitch

• Main Ports: 1″1/16-12UNF

• Drain Port: 9/16-18UNF

• Bearing Type: Tapered roller bearing

• Brake Holding Torque: 2000 N·m [17,700 lb·in]

• Min. Release Pressure: 13 bar

• Net Weight: Approx. 35 kg (with brake)

TMT 470V (Travel Motor Version, 151Z3305):

• Geometric Displacement: 470 cm³/rev

• Application: Excavator travel drive

• Compatible Equipment: LiuGong excavators

• Max. Working Pressure: 40 MPa (5800 PSI)

• Certification: RoHS

General Specifications:

• Control Type: Disc Valve Distribution with automatic wear compensation

• Mounting Flange: Standard 4-bolt / SAE flange

• Shaft Options: Ø40mm cylindrical / 17-teeth splined Ø38.1mm

• Rotation: Bi-directional

• Housing Material: High-strength cast iron

• Operating Temperature: -20°C to +80°C

• Interchangeable With: Danfoss TMT series (1:1 direct replacement)

Key Technical Advantages

1. Ultra-High Pressure Capability with Peak Torque Output

The TMT470 series features a disc valve distribution plate with automatic wear compensation, achieving a maximum continuous pressure drop of 250 bar and intermittent pressure of 350 bar, with peak torque reaching 2735 N·m. This design enables stable torque output even under extreme heavy-load conditions, making it ideal for travel drives and lifting applications requiring instantaneous high torque. The tapered roller bearing system accommodates high radial and axial combined loads.

2. Precision Geroler Gear Set with Volumetric Efficiency Assurance

The high-precision Geroler (internal gear-roller) set combined with a disc valve distribution plate automatically compensates for wear during operation, achieving high volumetric efficiency and extended service life. This design ensures smooth output at low speeds, effectively eliminating stick-slip behavior and providing smooth running across the 100-600 rpm speed range, meeting the precise positioning requirements of heavy-duty equipment.

3. Heavy-Duty Cast Iron Housing with Wide Operating Envelope

The thickened high-strength cast iron housing provides excellent impact and wear resistance, suitable for harsh working environments in construction, forestry, and mining. The motor features NBR standard seals with optional FKM high-temperature seals. The operating temperature range covers -20°C to +80°C, compatible with mineral hydraulic oils, synthetic fluids, and environmentally friendly biodegradable hydraulic fluids.

4. 100% Plug-and-Play Interchangeability with Multi-Platform Compatibility

Mounting flange bolt patterns, output shaft dimensions (Ø40mm cylindrical / 17-teeth splined), and port thread specifications are fully matched to Danfoss TMT series motors, achieving 1:1 direct replacement. The motor is also compatible with OEM equipment interfaces including CAT 234-1649, allowing customers to complete drop-in replacement without modifying existing hydraulic piping or mounting brackets.

Application Areas

• Construction Machinery: Skid steer loader travel drives, road roller travel drives, compact drill rig power head drives

• Forestry Machinery: Log grapples, wood harvesters, heavy-duty wood chippers

• Mining Equipment: Underground auxiliary hydraulic devices, heavy transmission units

• Sanitation Equipment: Large snow blower chute drives, street sweeper brush drives

• Material Handling: Heavy-duty winches and hoists, belt conveyor drives

• Specialty Vehicles: Excavator travel motors (TMT 470V model for LiuGong and other brands)

Expert Maintenance Tips

1. Pre-Installation System Flushing

Prior to installation, flush the hydraulic system piping to achieve a cleanliness level of NAS 9 (ISO 18/15) or better. Install a 10μm nominal filtration rating pressure line filter at the motor inlet to prevent particulate contaminants from entering the disc valve clearance.

2. Initial Start-Up Air Bleeding

After initial installation or motor replacement, loosen the drain port fitting to bleed air from the motor. Operate at no load and no more than 500 rpm for 5-10 minutes until a steady flow of oil is observed at the drain port before applying load. For TMT470FLV brake-equipped models, confirm brake release pressure exceeds 13 bar before bleeding.

3. Drain Line Back Pressure Control

The drain port back pressure must not exceed 0.5 MPa (5 bar). Route the drain line separately to the reservoir below oil level. For TMT470FLV models with the brake valve, ensure stable release port pressure to prevent brake mis-engagement due to back pressure fluctuations.

4. Fluid Cleanliness and Change Interval

Use anti-wear hydraulic oil with viscosity grade ISO VG 32-68. Replace the filter element after the first 500 hours of operation, then every 2,000 operating hours or annually, whichever comes first. Periodically test fluid contamination levels; if NAS class exceeds 10, change the oil immediately.

5. Long-Term Storage Protection

For storage exceeding 3 months, fill the motor internal cavity with clean hydraulic oil and cap all ports to prevent internal corrosion. Before re-commissioning, manually rotate the output shaft 2-3 turns to confirm free rotation before applying hydraulic power. For TMT470FLV brake-equipped models, additionally inspect brake friction plates for adhesion after extended storage.