1. Overview
• Brand: Danfoss Power Solutions (formerly Poclain Hydraulics).
• Series: OMS (Orbital Motor with Bevel Gear).
• Design: Radial piston hydraulic motor with an integrated bevel gearbox for angular transmission.
• Key Feature: Combines hydraulic power conversion with mechanical gear reduction in a single unit.
2. Design & Technology
• Radial Piston Motor Core:
• Usesmultiple pistons arranged radiallyaround a camshaft for high torque output.
• Efficient power transmission with minimal mechanical losses.
• Bevel Gear Integration:
• Spiral bevel gearsprovide smooth, quiet, and durable angular power transmission.
• Allows output shaft rotation at90°(or other angles, depending on design) relative to the motor housing.
• Sealed Construction:
• Protects internal components from contamination, extending service life.
3. Key Specifications (Typical for OMS Series)
【表格】
Parameter Description
Displacement Range: ~50 cm³/rev to ~1,000 cm³/rev (varies by model)
Max Pressure Up to 450 bar (6,500 psi)
Max Speed Up to 1,500 rpm (depending on load and displacement)
Torque Output High (proportional to displacement and gear ratio)
Gear Ratio Options Multiple ratios available (e.g., 1:1, 2:1, 3:1, etc.) for speed/torque adjustment
Mounting Flange, foot, or custom-mounted options
Shaft Options Splined, keyed, or flanged output shaft (horizontal or vertical)
4. Advantages
• Compact Design: Integrates motor and gearbox in one unit, saving space.
• High Efficiency: Radial piston + bevel gear combination minimizes power loss.
• Versatile Output: Angular shaft orientation (e.g., 90°) suits tight installations.
• Durable: Bevel gears handle high loads and shock loads better than worm gears.
• Low Noise: Spiral bevel gears operate quietly compared to straight-cut gears.
• Maintenance-Friendly: Modular design allows easy access for repairs.
5. Applications
The OMS Series is widely used in:
• Construction Equipment:
• Excavator swing drives
• Wheel loader steering systems
• Drilling rigs
• Agricultural Machinery:
• Tractor PTO drives
• Harvester headers
• Material Handling:
• Forklift mast drives
• Conveyor systems
• Industrial Machinery:
• Winches
• Presses
• Rotary tables
• Marine & Offshore:
• Anchor winches