Danfoss TMT 250 151Z3030 orbital hydraulic motor

Danfoss TMT 250, part number 151Z3030, is a fixed-displacement orbital hydraulic motor for low-speed, high-torque drives. The factory geometric displacement is 251.8 cm³/rev. Nominal size 250 identifies the series size and differs from the exact geometric displacement.

The factory execution uses a tapered keyed shaft: Dia. 45 mm, 1:10, 2 x M30 thread in shaft end. Refer to the original shaft-end or wheel-hub drawing for spline, key, threads and tolerances.

Mounting type: 4 Bolt - Square; locating pilot 160.0 mm; bolt circle 200.0 mm. Main port connection: 3/4" BSP. Drain connection: 1/4" BSP. Port arrangement: Sideport - staggered. The motor uses Geroler gearing and disc valve with valve drive. Factory check-valve provision: No.

Select the operating point from the size-specific hydraulic data and performance diagram. Continuous, intermittent and peak limits represent separate operating duties and must not be combined into one maximum-duty point. Differential pressure differs from maximum inlet pressure. Observe the applicable shaft loading, shaft-seal pressure, return pressure and drain requirements.

Representative Danfoss TMT photograph supplied on this article’s manufacturer page; shaft, ports, mounting, brake arrangement and displacement may differ. Refer to the technical PDF for exact specifications.