Product Overview
The TF0280MS1V0AAAB is a Parker Torqmotor™ TF Series medium-duty low-speed high-torque orbital hydraulic motor with a geometric displacement of 280 cm³/rev (17.1 in³/rev), featuring a Magneto mounting configuration and a 1-1/4″ keyed shaft output. The TF Series is the medium-duty workhorse of Parker’s orbital motor lineup, spanning displacements from 81 to 477 cm³/rev with continuous output torque from 220 to 681 Nm and intermittent torque up to 851 Nm.
Key technical features of the TF0280MS1V0AAAB include: a patented 60:40 spline geometry in the power train for superior strength, with all splines continuously flushed by cool fluid for extended durability. The roller vane rotor design replaces sliding contact with rolling contact, reducing friction losses and internal leakage to maintain stable volumetric efficiency throughout the motor’s service life. A sealed commutation valve ensures zero-leak flow distribution without the need for external check valves. The high-pressure shaft seal is standard, capable of withstanding full system pressure and washed in cool fluid for long life — eliminating the need for a case drain line.
As a direct interchange unit for the Parker TF Series, the TF0280MS1V0AAAB is dimensionally compatible with OEM Parker motors in mounting flange, shaft extension, and port layout. It serves as a drop-in replacement for equivalent TF Series motors and cross-compatible with Danfoss and Eaton LSHT motors of similar displacement. Every unit undergoes 100% simulated operating condition testing prior to shipment, verifying displacement accuracy, pressure integrity, and torque output consistency.
Technical Specifications
Model: TF0280MS1V0AAAB
Brand Series: Parker Torqmotor™ TF Series (Medium Duty LSHT)
Motor Type: Orbital hydraulic motor (LSHT)
Geometric Displacement: 280 cm³/rev (17.1 in³/rev)
Mounting: Magneto flange mount
Output Shaft: 1-1/4″ keyed shaft
Maximum Continuous Differential Pressure: 138 bar (2000 PSID)
Maximum Intermittent Differential Pressure: 207 bar (3000 PSID)
Maximum Supply Pressure: 300 bar (4350 PSID)
Maximum Continuous Oil Flow: 76 L/min (20 gpm)
Maximum Intermittent Oil Flow: 95 L/min (25 gpm)
Continuous Output Torque: 509 N·m (4502 lb-in)
Intermittent Output Torque: 794 N·m (7029 lb-in)
Minimum Starting Torque (Continuous/Intermittent): 438 N·m / 672 N·m
Maximum Speed: 334 rpm
Maximum Side Load (Flange Mount): 17792 N
Maximum Side Load (Wheel Mount): 26688 N
Maximum Output Power: 27.8 kW (37.3 HP)
Port Size: 7/8-14 SAE
Weight: Approximately 14.9 kg
Sources: Parker TF Series Clutch Motor official technical data and TF Series product specifications.
Key Technical Advantages
1. Patented 60:40 Spline Geometry — Power Train Strength Guarantee
The TF Series power train utilizes Parker’s patented 60:40 spline geometry. Compared to conventional 50:50 spline tooth profiles, the asymmetric 60:40 design increases the tooth root cross-sectional area, reducing root stress under equivalent torque and improving fatigue strength. All internal splines are continuously flushed with cool hydraulic fluid, effectively carrying away friction heat and wear particles to prevent premature spline failure from overheating or contamination. This design enables the TF Series to withstand the frequent reversing shock loads encountered in heavy-duty drive applications.
2. Roller Vane Rotor with Zero-Leak Commutation — Long-Term Volumetric Efficiency
The TF0280MS1V0AAAB employs a roller vane rotor design in which the rotor tooth profile makes rolling contact with the stator ring through embedded rollers. Compared to the sliding contact architecture of conventional orbital motors, the coefficient of friction is significantly reduced and internal leakage is effectively controlled. Combined with the sealed commutation (zero-leak valve plate), the motor achieves high volumetric efficiency from initial startup and maintains it throughout its service life. The commutation design also eliminates the need for external check valves, simplifying the hydraulic circuit and reducing potential leak points.
3. High-Pressure Shaft Seal with Case Drain Elimination — Engineering Value in System Simplification
The TF Series shaft seal system is specifically engineered to withstand full system pressure, with the seal area continuously washed by cool fluid to manage seal interface temperature. This design eliminates the need for an independent case drain line, simplifying hydraulic circuit plumbing, reducing the number of fittings and potential leak points. For series circuits or multi-motor loops, this characteristic significantly lowers system integration complexity and maintenance costs.
4. High Side Load Capacity — Reliable Support for Heavy Radial Loads
The TF Series is equipped with heavy-duty thrust and roller bearings, delivering up to twice the side load capacity of previous motor generations. Maximum side load is 17792 N for flange mounts and 26688 N for wheel mounts. This capability makes the TF Series particularly suitable for indirect drive configurations involving chain drives, gear drives, and belt drives where significant radial forces are imposed on the shaft, as well as wheel-mounted travel drive applications.
Application Areas
Agricultural Machinery: Combine header drives, potato/tomato/nut harvester drives, baler drives, planter drives
Turf & Garden Equipment: Zero-turn radius mower drives, golf course maintenance equipment, turf rollers
Construction Equipment: Skid steer attachment drives, trencher drives, auger drives
Material Handling: Conveyor drives, winch drives, chain drive systems
Forestry Equipment: Wood chipper drives, skidder drives
Specialty Vehicles: Sweeper drives, snow removal equipment, salt and sand spreaders, aerial work platform wheel drives
Oil & Gas: Fracturing blender truck drives, oilfield auxiliary equipment drives
Expert Maintenance Tips
Installation Guidelines:
The TF0280MS1V0AAAB uses a Magneto flange mount. Tighten flange bolts in a diagonal alternating pattern to ensure even loading. The flange mount configuration can carry side loads up to 17792 N, but the mounting surface must be flat and clean to prevent housing distortion from an uneven mounting face.
The output shaft is a 1-1/4″ keyed shaft. Apply a thin film of grease to the shaft extension before coupling installation. Never install couplings by impact or hammering.
Port size is 7/8-14 SAE. Verify O-rings are intact and correctly seated, and tighten to Parker-specified torque values.
Commissioning & Operation:
Fill the motor case with clean hydraulic oil and bleed air before first startup. Although the TF Series high-pressure shaft seal design permits full system pressure operation without a case drain line, the case must still be filled with oil at commissioning.
Maintain system filtration at 10 μm or better (NAS Class 9 maximum). The roller vane rotor is sensitive to particulate contamination, which accelerates roller and stator ring wear.
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 138 bar; intermittent pressure must not exceed 207 bar with a maximum duration of 6 seconds per cycle.
Maintenance Schedule:
Inspect volumetric efficiency performance every 500 operating hours. If torque output declines or low-speed operation becomes unstable, inspect the valve plate sealing surface and roller vane pair wear condition first.
Replace hydraulic fluid at intervals not exceeding 2000 operating hours or 12 months. Use ISO VG 46 or VG 68 anti-wear hydraulic oil.
For storage exceeding 3 months, fill the motor with rust-preventive hydraulic oil and cap all ports to prevent internal corrosion.
