151Z3305 Danfoss TMT 470 V Orbital Hydraulic Motor

Product Overview

The Danfoss TMT Series is a large-frame LSHT (Low-Speed High-Torque) orbital hydraulic motor platform engineered for low-speed, high-torque hydraulic drives used in mobile machinery, agriculture, conveyors, material handling and industrial equipment.

Danfoss describes its orbital motors as providing smooth operation across the speed range, constant operating torque over a wide speed range, high starting torque, high efficiency, long life under demanding operating conditions, compact construction and high radial and axial bearing capacity. The motors are suitable for both open- and closed-loop hydraulic systems.

The requested range includes:

• TMT 250
• TMT 315
• TMT 400
• TMT 470
• TMT 500
• TMT 630
• TMT 470 V — 151Z3305

Danfoss PowerSource directly identifies 151Z3305 as a TMT 470 V Hydraulic Motor, making it the preferred primary part number for SEO targeting.

The TMT platform should not be confused with the separate Danfoss OMT family. Mounting, shaft, port, drain and other configurations vary within the TMT platform, so complete part-number verification is required for replacement applications.

Technical Specifications

TMT 250

• Brand: Danfoss
• Series: TMT
• Product Type: LSHT Orbital Hydraulic Motor
• Motor Size: TMT 250
• Geometric Displacement: 251.8 cm³/rev
• Displacement: 15.37 in³/rev
• Maximum Continuous Speed: 500 rpm
• Maximum Intermittent Speed: 600 rpm
• Maximum Continuous Torque: 940 Nm
• Maximum Intermittent Torque: 1,290 Nm
• Peak Torque: 1,440 Nm
• Maximum Continuous Output: 35 kW
• Maximum Intermittent Output: 47 kW
• Maximum Continuous Differential Pressure: 250 bar
• Maximum Intermittent Differential Pressure: 350 bar
• Peak Differential Pressure: 400 bar
• Maximum Continuous Flow: 125 L/min
• Maximum Intermittent Flow: 150 L/min
• Maximum Starting Pressure with Unloaded Shaft: 6 bar
• Maximum Inlet Pressure: 270 bar continuous / 370 bar intermittent / 420 bar peak
• Maximum Return Pressure with Drain: 140 bar continuous / 175 bar intermittent / 210 bar peak
• Minimum Starting Torque at Maximum Continuous Pressure Drop: 780 Nm
• Minimum Starting Torque at Maximum Intermittent Pressure Drop: 1,080 Nm

TMT 315

• Motor Size: TMT 315
• Geometric Displacement: 326.3 cm³/rev
• Displacement: 19.91 in³/rev
• Maximum Continuous Speed: 380 rpm
• Maximum Intermittent Speed: 460 rpm
• Maximum Continuous Torque: 1,230 Nm
• Maximum Intermittent Torque: 1,660 Nm
• Peak Torque: 1,865 Nm
• Maximum Continuous Output: 35 kW
• Maximum Intermittent Output: 47 kW
• Maximum Continuous Differential Pressure: 250 bar
• Maximum Intermittent Differential Pressure: 350 bar
• Peak Differential Pressure: 400 bar
• Maximum Continuous Flow: 125 L/min
• Maximum Intermittent Flow: 150 L/min
• Minimum Starting Torque at Maximum Continuous Pressure Drop: 1,060 Nm
• Minimum Starting Torque at Maximum Intermittent Pressure Drop: 1,520 Nm

TMT 400

• Motor Size: TMT 400
• Geometric Displacement: 410.9 cm³/rev
• Displacement: 25.07 in³/rev
• Maximum Continuous Speed: 305 rpm
• Maximum Intermittent Speed: 360 rpm
• Maximum Continuous Torque: 1,520 Nm
• Maximum Intermittent Torque: 2,120 Nm
• Peak Torque: 2,355 Nm
• Maximum Continuous Output: 37 kW
• Maximum Intermittent Output: 51 kW
• Maximum Continuous Differential Pressure: 250 bar
• Maximum Intermittent Differential Pressure: 350 bar
• Peak Differential Pressure: 400 bar
• Maximum Continuous Flow: 125 L/min
• Maximum Intermittent Flow: 150 L/min
• Minimum Starting Torque at Maximum Continuous Pressure Drop: 1,360 Nm
• Minimum Starting Torque at Maximum Intermittent Pressure Drop: 1,930 Nm

TMT 470

• Motor Size: TMT 470
• Geometric Displacement: 477.3 cm³/rev
• Displacement: 29.13 in³/rev
• Maximum Continuous Speed: 270 rpm
• Maximum Intermittent Speed: 320 rpm
• Maximum Continuous Torque: 1,760 Nm
• Maximum Intermittent Torque: 2,420 Nm
• Peak Torque: 2,735 Nm
• Maximum Continuous Output: 37 kW
• Maximum Intermittent Output: 49 kW
• Maximum Continuous Differential Pressure: 250 bar
• Maximum Intermittent Differential Pressure: 350 bar
• Peak Differential Pressure: 400 bar
• Maximum Continuous Flow: 125 L/min
• Maximum Intermittent Flow: 150 L/min
• Minimum Starting Torque at Maximum Continuous Pressure Drop: 1,500 Nm
• Minimum Starting Torque at Maximum Intermittent Pressure Drop: 2,050 Nm

TMT 500

• Motor Size: TMT 500
• Geometric Displacement: 494.8 cm³/rev
• Displacement: 30.19 in³/rev
• Maximum Continuous Speed: 250 rpm
• Maximum Intermittent Speed: 300 rpm
• Maximum Continuous Torque: 1,770 Nm
• Maximum Intermittent Torque: 2,240 Nm
• Peak Torque: 2,390 Nm
• Maximum Continuous Output: 35 kW
• Maximum Intermittent Output: 42 kW
• Maximum Continuous Differential Pressure: 250 bar
• Maximum Intermittent Differential Pressure: 325 bar
• Peak Differential Pressure: 375 bar
• Maximum Continuous Flow: 125 L/min
• Maximum Intermittent Flow: 150 L/min
• Minimum Starting Torque at Maximum Continuous Pressure Drop: 1,530 Nm
• Minimum Starting Torque at Maximum Intermittent Pressure Drop: 1,820 Nm

TMT 630

• Motor Size: TMT 630
• Geometric Displacement: 629.1 cm³/rev
• Displacement: 38.39 in³/rev
• Maximum Continuous Speed: 200 rpm
• Maximum Intermittent Speed: 240 rpm
• Maximum Continuous Torque: 1,830 Nm
• Maximum Intermittent Torque: 2,290 Nm
• Peak Torque: 2,740 Nm
• Maximum Continuous Output: 27 kW
• Maximum Intermittent Output: 33 kW
• Maximum Continuous Differential Pressure: 200 bar
• Maximum Intermittent Differential Pressure: 250 bar
• Peak Differential Pressure: 300 bar
• Maximum Continuous Flow: 125 L/min
• Maximum Intermittent Flow: 150 L/min
• Minimum Starting Torque at Maximum Continuous Pressure Drop: 1,600 Nm
• Minimum Starting Torque at Maximum Intermittent Pressure Drop: 1,980 Nm

TMT 470 V — 151Z3305

• Brand: Danfoss
• Product Name: TMT 470 V Hydraulic Motor
• Part Number: 151Z3305
• Motor Family: TMT
• Motor Size: TMT 470 V
• Geometric Displacement: 477.3 cm³/rev
• Displacement: 29.13 in³/rev
• Maximum Continuous Speed: 270 rpm*
• Maximum Intermittent Speed: 320 rpm*
• Maximum Continuous Differential Pressure: 250 bar*
• Maximum Intermittent Differential Pressure: 350 bar*
• Peak Differential Pressure: 400 bar*
• Maximum Continuous Flow: 125 L/min*
• Maximum Intermittent Flow: 150 L/min*
• Maximum Continuous Torque: 1,760 Nm*
• Maximum Intermittent Torque: 2,420 Nm*
• Peak Torque: 2,735 Nm*

* These are published TMT 470 motor-size performance values. They are not a claim that every operating parameter can be reached simultaneously on every configuration. Danfoss PowerSource confirms 151Z3305 as TMT 470 V, while the public page does not expose the complete configuration code. Exact mounting, shaft, port and option details should therefore be verified from the original nameplate/configuration drawing.

Danfoss states that TMT performance diagrams are based on tests of representative production motors using mineral hydraulic oil at approximately 35 mm²/s / 165 SUS and 50°C / 120°F, with return pressure between 5 and 10 bar / 75 and 150 psi.

Control Method

The TMT Series uses a fixed-displacement orbital motor architecture.

The fundamental relationships are:

Hydraulic Flow → Motor Speed

Differential Pressure × Displacement → Available Output Torque

Therefore:

• Displacement: Fixed
• Speed Control: Hydraulic flow
• Torque Generation: Differential pressure
• Rotation: Controlled by hydraulic flow direction
• Variable Displacement Control: Not integrated in the standard TMT architecture

Danfoss provides TMT versions with different mounting, shaft, port and optional functions, including flushing valves, brake options and speed-sensor configurations.

Key Technical Advantages

1. Large-Displacement LSHT Powertrain

Across TMT 250 to TMT 630, geometric displacement increases from 251.8 to 629.1 cm³/rev, while continuous maximum speed decreases from 500 to 200 rpm and continuous torque reaches up to 1,830 Nm.

This is characteristic of a high-displacement LSHT motor platform optimized for direct low-speed rotary drive.

2. High Starting Torque

Danfoss identifies high starting torque as a core characteristic of its orbital motor technology.

For TMT 470, the minimum starting torque at maximum continuous pressure drop is 1,500 Nm, increasing to 2,050 Nm at the maximum intermittent pressure-drop condition.

3. Smooth Low-Speed Operation

Danfoss specifies smooth running over the entire speed range, constant operating torque over a broad speed range and high efficiency as core orbital-motor characteristics.

This is particularly valuable in conveyors, agricultural machinery and other applications requiring controlled low-speed rotation.

4. High Radial and Axial Load Capacity

Danfoss identifies high radial and axial bearing capacity as a key feature of its orbital motors.

TMT configurations are available with cylindrical, splined and tapered shafts as well as different mounting arrangements, enabling integration into mechanically loaded drive systems.

5. Geroler and Disc-Valve Powertrain

Danfoss TMT configurations use a Geroler orbital gearwheel set with a disc valve and valve drive. Official PowerSource configuration data for TMT 400 explicitly lists this architecture.

The architecture provides a compact powertrain suited to high-torque, low-speed hydraulic drive applications.

6. High Return-Pressure Capability

Danfoss provides explicit return-pressure and shaft-seal-pressure guidance for the TMT family. For TMT 250–630 with a drain connection, the published return-pressure limits are 140 bar continuous, 175 bar intermittent and 210 bar peak.

Actual permissible pressure must still be evaluated against the specific motor configuration, speed and seal arrangement.

7. Configuration Flexibility

The official TMT catalog documents multiple combinations of:

• Four-bolt square mounting
• Different pilot diameters
• Different bolt circles
• Cylindrical shafts
• Splined shafts
• Tapered shafts
• European and US port versions
• Side ports
• Drain connections

This makes the platform well suited to OEM integration and replacement applications.

Application Areas

TMT 250 / TMT 315

Typical applications include:

• Agricultural machinery
• Conveyor systems
• Material handling equipment
• Mobile hydraulic equipment
• Industrial rotary drives
• Agricultural attachments

TMT 400

Typical applications include:

• Agricultural machinery
• Industrial conveyors
• Road machinery
• Forestry equipment
• Material handling
• Augers
• Rotary attachments

The TMT 400 provides 410.9 cm³/rev, 305 rpm continuous maximum speed and 1,520 Nm continuous maximum torque.

TMT 470 / TMT 470 V — 151Z3305

Typical applications include:

• Heavy conveyor drives
• Agricultural machinery
• Forestry machinery
• Road construction equipment
• Material handling equipment
• Industrial rotary drives
• Augers
• Mobile hydraulic equipment

Danfoss PowerSource directly identifies 151Z3305 as a TMT 470 V Hydraulic Motor.

TMT 500

Typical applications include:

• Heavy-duty conveyors
• Agricultural processing equipment
• Forestry machinery
• Industrial drives
• Material handling systems
• Sprocket drives

TMT 630

Typical applications include:

• Heavy-duty conveyor systems
• Large agricultural machinery
• Forestry equipment
• Heavy material handling
• Road machinery
• Industrial rotary equipment

The TMT 630 provides 629.1 cm³/rev displacement and 1,830 Nm continuous / 2,290 Nm intermittent maximum torque.

Expert Maintenance Tips

1. Specify the Complete Part Number

For 151Z3305, provide:

• Part number
• Nameplate data
• Mounting configuration
• Shaft type
• Port type
• Rotation
• Drain arrangement

Danfoss PowerSource verifies 151Z3305 as TMT 470 V, but its public page does not expose the full configuration code.

2. Do Not Treat TMT 470 Performance Data as a Universal Part-Number Limit

The Danfoss catalog provides performance data by motor size.

For TMT 470:

• 477.3 cm³/rev
• 270 rpm continuous
• 320 rpm intermittent
• 250/350/400 bar differential pressure
• 125/150 L/min flow
• 1,760/2,420/2,735 Nm torque

These values describe the TMT 470 motor-size performance envelope; the actual complete configuration must still be checked against its function diagram and ordering information.

3. Control Return Pressure Carefully

Danfoss publishes maximum return pressure with drain of:

• 140 bar continuous
• 175 bar intermittent
• 210 bar peak

High-speed, closed-loop and high-temperature applications require particular attention to shaft-seal pressure.

4. Calculate External Shaft Loads

For direct sprocket, chain, gear, pulley or wheel drives, evaluate:

Radial Load + Load Distance + Shaft Speed + Bearing Life

Danfoss provides dedicated permissible shaft-load and bearing-load calculation data for the TMT family.

5. Verify Shaft Alignment

During installation, inspect:

• Pilot fit
• Shaft concentricity
• Coupling alignment
• Mounting-face flatness
• Spline engagement
• Shaft runout

Poor alignment can increase bearing loads and accelerate shaft-seal or powertrain wear.

6. Respect Intermittent and Peak Duty Limits

Danfoss defines:

Intermittent operation = maximum 10% of every minute

and:

Peak load = maximum 1% of every minute

The intermittent and peak pressure/torque values therefore must not be treated as continuous operating ratings.

7. Standardize Replacement Test Conditions

Danfoss function diagrams are based on:

• Mineral-based hydraulic oil
• Approximately 35 mm²/s / 165 SUS viscosity
• 50°C / 120°F
• 5–10 bar / 75–150 psi return pressure

Replacement validation should use consistent oil, temperature, flow and load conditions for meaningful comparison.

8. Perform 100% Simulated Operating-Condition Testing

For replacement TMT 250 / 315 / 400 / 470 / 500 / 630 motors, recommended factory QA should include:

• Displacement verification
• Continuous pressure testing
• Intermittent pressure testing
• Peak-pressure verification
• Flow testing
• Speed verification
• Starting-torque testing
• Continuous-torque testing
• Internal-leakage testing
• Rotation-direction testing
• Shaft runout inspection
• Bearing-load verification
• Return-pressure testing
• Temperature-rise testing
• Noise and vibration testing
• Complete configuration verification

For 151Z3305 TMT 470 V, final acceptance should be based on the TMT 470 performance curve plus the exact configuration drawing, rather than assigning the highest published TMT-family values indiscriminately.