TMT 250 Hydraulic Orbital Motor · 251.8 cm³/rev
Four-bolt large-frame orbital motor for propel and work functions on compact machines. Smooth running across the whole speed range with high starting torque from the first bar of pressure.
Overview
The TMT 250 is the smallest frame in the TMT family, and the one that turns fastest. Where the larger sizes trade speed for torque, the 250 still reaches 500 rpm continuously while holding 940 N·m, so a single displacement can cover both the travel circuit and a work function that needs pushing force at low speed.
Like every motor in the series it is a low-speed, high-torque orbital design: constant torque is available over a wide speed range, the shaft breaks away at very low pressure, and the motor tolerates high return pressure without a separate drain line. Typical installations are compact loaders, trench compactors, forestry harvester heads and beet harvesters, in open or closed loop systems.
TMT 250 technical data
| Parameter | Continuous | Intermittent | Peak |
|---|---|---|---|
| Geometric displacement | 251.8 cm³/rev (15.37 in³/rev) | ||
| Maximum speed | 500 rpm | 600 rpm | - |
| Maximum torque | 940 N·m | 1,290 N·m | 1,440 N·m |
| Maximum output | 35 kW (47 hp) | 47 kW (63 hp) | - |
| Maximum pressure drop | 250 bar | 350 bar | 400 bar |
| Maximum oil flow | 125 L/min | 150 L/min | - |
| Minimum starting torque at max. pressure drop | 780 N·m | 1,080 N·m | - |
| Max. inlet pressure | 270 bar | 370 bar | 420 bar |
| Max. return pressure with drain line | 140 bar | 175 bar | 210 bar |
| Starting pressure, unloaded shaft | 6 bar (90 psi) | ||
Code numbers & configuration
| Configuration | Code number | Shaft & mounting |
|---|---|---|
| European standard | 151Z3010 | 4-bolt flange, Ø160 mm spigot, cylindrical 40 mm shaft, G 3/4 ports |
| Splined shaft | 151Z3020 | 4-bolt flange, splined 1-1/2 in shaft |
| Other builds | on request | Ø125 mm spigot, tapered 45 mm shaft, 1-1/16-12 UN ports, side port version |
Variants of the same frame
Short motor without bearings for compact integration into gearboxes and other drive housings.
Wheel mounting flange that uses the bearing capacity of the frame for direct wheel drive.
Holding brake built into the motor; a flushing valve, speed sensor and dust seal ring can also be specified.
Applications
Supply & support
FAQ
How can I be sure the TMT 250 fits my machine?Check the nameplate first. A code starting with 151Z3010 or 151Z3020 identifies the 250 frame and its shaft style, and the mounting pattern is shared with the other TMT sizes, so matching the code, shaft and port standard is usually enough. If the plate is unreadable, send a photo of the motor and the machine model.
Which shaft and flange options are available for the 250?Four-bolt flange with a Ø160 mm or Ø125 mm spigot on a Ø200 mm or Ø160 mm bolt circle, cylindrical 40 mm, splined 1-1/2 in or tapered 45 mm shaft, and G 3/4 or 1-1/16-12 UN ports.
Can the 250 be supplied with a brake or as a wheel motor?Yes. The TMT FL version integrates a holding brake and the TMTW version uses a wheel mounting flange; a flushing valve for closed loop circuits and a speed sensor can also be specified.
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