OMT200 Danfoss Orbital Motor 201.4cc 33.5kW LSHT Interchange

Product Overview

The OMT200 is a mid-range model in the Danfoss OMT Series of large low-speed high-torque orbital hydraulic motors, featuring a geometric displacement of 201.4 cm³/rev (12.29 in³/rev), disc valve flow distribution, and Geroler gear set design. The OMT Series is the large-frame workhorse of the Sauer Danfoss orbital motor lineup, spanning displacements from 161.1 to 801.8 cm³/rev with continuous output power up to 33.5 kW, covering applications from heavy-duty industrial drives to mobile hydraulic systems.

Key technical features of the OMT200 include: Geroler gear set technology that replaces sliding contact with rolling contact through embedded rollers, significantly reducing friction losses and internal leakage. The motor achieves high volumetric efficiency from initial startup and maintains it throughout its service life. The disc valve distribution system creates a pressure-compensating sealing interface between the valve plate and rotor face, automatically compensating for wear. The output shaft is supported by front and rear double-row tapered roller bearings for high radial and axial load capacity. The motor features a standard 4-bolt square mounting flange (125 mm pilot diameter, 160 mm bolt circle) with standard 40 mm cylindrical or 1-1/2″ 17T splined shaft configurations.

The OMT200 shares the same design platform and mounting interface with all OMT Series models (OMT160 / OMT200 / OMT230 / OMT250 / OMT315 / OMT400 / OMT500 / OMT630 / OMT800) and is cross-compatible with Eaton, Parker, and M+S LSHT motors of similar displacement. In addition, this series covers OMV630, OMS315, OMSS315, OMT500FH, OMP200, OMT250, and OMR160 models, covering full-range hydraulic drive requirements from small to large displacement. Every unit undergoes 100% simulated operating condition testing prior to shipment, verifying displacement accuracy, pressure integrity, and torque output consistency.

Series Model Coverage: OMR160 / OMV630 / QMT315T / OMS315 / OMSS315 / OMT500FH / OMP200 / OMT200 / OMT250

Technical Specifications 

OMT200 Core Specifications:

• Model: OMT200

• Brand Series: Danfoss OMT Series (Large LSHT)

• Motor Type: Disc valve orbital hydraulic motor (LSHT)

• Gear Set Type: Geroler

• Geometric Displacement: 201.4 cm³/rev (12.29 in³/rev)

• Maximum Continuous Speed: 375 rpm

• Maximum Intermittent Speed: 450 rpm

• Maximum Continuous Torque: 640 N·m

• Maximum Intermittent Torque: 850 N·m

• Maximum Peak Torque: 1050 N·m

• Maximum Continuous Pressure Drop: 20 MPa

• Maximum Intermittent Pressure Drop: 25 MPa

• Maximum Continuous Output Power: 33.5 kW

• Maximum Continuous Flow: 75 L/min

• Mounting Flange: 4-bolt square flange, 125 mm pilot diameter, 160 mm bolt circle

• Output Shaft: 40 mm cylindrical / 1-1/2″ 17T splined optional

• Main Port: G 3/4

• Drain Port: G 1/4

• Bearing Type: Double-row tapered roller bearings (front & rear)

• Weight: Approximately 23 kg

• Recommended Fluid: Anti-wear hydraulic oil, viscosity 20–75 cSt

Sources: Danfoss OMT Series official technical data and product specifications.

Additional Series Model Specifications:

• OMR160: Displacement 160 cm³/rev, Max Speed 375 rpm, Max Continuous Torque 300 N·m, Max Continuous Power 10.0 kW

• OMV630: Displacement 629.1 cm³/rev, Max Continuous Speed 320 rpm, Max Continuous Torque 1660 N·m, Max Continuous Power 40 kW, Max Continuous Pressure Drop 18 MPa

• OMS315: Displacement 314.5 cm³/rev, Max Continuous Speed 240 rpm, Max Continuous Torque 560 N·m, Max Continuous Power 14.1 kW, Max Continuous Pressure Drop 12 MPa

• OMSS315: Displacement 314.9 cm³/rev, Max Continuous Speed 240 rpm, Max Continuous Torque 825 N·m, Max Continuous Power 15.0 kW, Max Continuous Pressure Drop 200 bar

• OMT500FH: Displacement 523.6 cm³/rev, Max Continuous Speed 240 rpm, Max Continuous Torque 1220 N·m, Max Continuous Power 26.5 kW

• OMP200: Displacement 194.6 cm³/rev, Max Continuous Speed 310 rpm, Max Continuous Torque 340 N·m, Max Continuous Power 10.9 kW

• OMT250: Displacement 251.8 cm³/rev, Max Continuous Speed 300 rpm, Max Continuous Torque 640 N·m, Max Continuous Power 33.5 kW

Key Technical Advantages

1. Geroler Gear Set with Disc Valve — Volumetric Efficiency at High Pressure

The OMT200 employs Geroler gear set technology in which the rotor tooth profile makes rolling contact with the stator ring through embedded rollers, significantly reducing the coefficient of friction and controlling internal leakage compared to conventional orbital motor architectures. The disc valve distribution system creates a pressure-compensating sealing interface between the valve plate and rotor face, maintaining stable volumetric efficiency under high-pressure conditions. The valve plate is hydraulically loaded against the rotor face, automatically compensating for wear and ensuring consistent torque output throughout the motor’s service life.

2. Double-Row Tapered Roller Bearings — Reliable Heavy Radial Load Capacity

The OMT200 output shaft is supported by front and rear double-row tapered roller bearings, delivering significantly higher radial load capacity and rigidity compared to the plain sleeve bearings or single-row ball bearings commonly used in competing orbital motors of the same displacement class. This design enables the motor to accommodate the elevated radial forces generated by gear drives, belt drives, and other indirect drive configurations, as well as wheel-mounted travel drive applications.

3. Full Series Coverage with Modular Interchangeability — One-Stop Drive Solution

This series covers displacements from OMR160 through OMV630, with all models sharing consistent mounting flange, shaft extension, and port layout dimensions, enabling equipment manufacturers to flexibly select motors across different machine models. As the mid-range model in the series, the OMT200 shares the same design platform and mounting interface with OMT160, OMT250, OMT315, OMT400, and OMT500 models, eliminating the need to redesign hydraulic systems during equipment upgrades or retrofits.

4. Broad Brand Interchangeability — Drop-In Replacement Solution

The OMT200 is dimensionally compatible with Danfoss OMT, Eaton Char-Lynn 2000 Series, Parker, and M+S brand equivalents in mounting flange, shaft extension, and port layout. The series serves as a direct replacement for the above-brand motors without modification to mounting brackets, couplings, or hydraulic piping. For equipment maintenance and retrofit projects, this translates to dramatically reduced downtime and lower maintenance costs.

Application Areas

• Agricultural Machinery: Combine header drives, baler drives, planter drives, irrigation hose reel drives

• Construction Equipment: Excavator travel drives, crane hoist drives, rotary drilling rig power head drives

• Material Handling: Conveyor drives, winch drives, forklift travel drives

• Forestry Equipment: Wood chipper drives, skidder drives, feller buncher drives

• Mining Equipment: Drill rig drives, coal mine conveyor drives

• Fishing & Marine: Net hauling winch drives, windlass motors, deck machinery

• Specialty Vehicles: Street sweeper drives, snow removal equipment drives, aerial work platform wheel drives

Expert Maintenance Tips

Installation Guidelines:

• The OMT200 uses a 4-bolt square mounting flange with 125 mm pilot diameter and 160 mm bolt circle diameter. Tighten flange bolts in a diagonal alternating pattern to ensure even loading. The mounting surface must be clean and undamaged to prevent housing distortion.

• The output shaft is a 40 mm cylindrical or 1-1/2″ 17T splined shaft. Apply a thin film of grease to the shaft surface before coupling installation to prevent spline or keyway damage. Never install couplings by impact or hammering.

• Use G 3/4 standard fittings for main ports and G 1/4 for the drain port. Verify O-rings or bonded washers are intact and tighten to Danfoss-specified torque values.

Commissioning & Operation:

• Before first startup, fill the motor case with clean hydraulic oil and bleed air. Maximum system operating oil temperature must not exceed 80°C.

• Use anti-wear hydraulic oil with viscosity range 20–75 cSt. Maintain fluid cleanliness at ISO 18/13 (NAS Class 9) or better.

• Before full-load operation, run the motor at 30% of rated pressure for a minimum of 1 hour to complete the run-in process.

• Maximum continuous differential pressure is 20 MPa; intermittent pressure must not exceed 25 MPa with a maximum duration of 6 seconds per cycle.

• If system back pressure exceeds shaft seal limits, install an external case drain line. The drain line should maintain back pressure to ensure the motor remains filled with hydraulic oil.

Maintenance Schedule:

• Inspect volumetric efficiency performance every 500 operating hours. If torque output declines or speed becomes unstable, inspect the valve plate sealing surface and Geroler gear set wear condition first.

• Replace hydraulic fluid at intervals not exceeding 2000 operating hours or 12 months, whichever comes first. Clean or replace suction and return filter elements concurrently during oil changes.

• For storage exceeding 3 months, fill the motor with rust-preventive hydraulic oil and cap all ports to prevent internal corrosion.