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danfoss Cycloid motor
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Description
Danfoss Gerotor Motor Specifications and Models
Danfoss gerotor motors (also known as orbital gerotor motors) are widely used in mobile and industrial hydraulic systems, featuring high reliability, compact structure and excellent torque performance. The main series include OMP/OMPW/OMPX, OMR/OMRX, OMS, OMT, and J/H/S/T series. Detailed specifications and models are as follows:
1. OMP/OMPW/OMPX Series
This series is a medium-speed gerotor motor with a wide displacement range, suitable for various general-purpose applications. ATEX versions are available for explosive atmospheres in compliance with Directive 94/9/EC.
Key Specifications
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Displacement range: 25 cm³/rev (1.53 in³/rev) to 400 cm³/rev (24.41 in³/rev)
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Maximum continuous oil flow: 60 litres/minute (15.9 gallons/minute)
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Intermediate maximum output power: 17.4 hp (13 kW)
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Maximum intermediate pressure drop: 175 bar (2540 psi)
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Shaft type: Splined shaft (e.g., 6 splines, 25.4 mm diameter) is optional
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Flange type: SAE A flange (2-bolt or 4-bolt) is standard
Typical Models
OMP 25, OMP 50, OMP 80, OMP 100, OMP 125, OMP 160, OMP 200, OMP 250, OMP 315, OMP 400; OMPW series (water-cooled version); OMPX series (enhanced performance version, e.g., OMPX 50).
Example model details: OMP 50 (Part No. 151-0630) with displacement 50 cm³/rev, SAE 6B splined shaft (25.4 mm), SAE A 2-bolt flange, side port (G1/2) and drain port (G1/4).
2. OMR/OMRX Series
Low-speed high-torque (LSHT) gerotor motors, widely used in construction, agriculture and material handling equipment. They offer multiple configuration options for flange, shaft and port.
Key Specifications
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Displacement range: 50 cm³/rev to 375 cm³/rev
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Shaft diameter: 25 mm or 25.4 mm (straight shaft or splined shaft)
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Port specifications: Side port or rear port, thread size G1/2 (main port) and G1/4 (drain port); optional 7/8 main port and 7/16 drain port
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Flange type: Standard SAE A2 flange
Typical Models
OMR 50, OMR 80, OMR 100, OMR 125, OMR 160, OMR 200, OMR 250, OMR 315, OMR 375; OMRX series (high-efficiency upgraded version). Each model has variants with/without drain port and different port positions.
3. OMS Series
High-torque gerotor motors designed for heavy-duty applications, with a compact structure and strong load capacity. They are often used in mixers, conveyors and crawler drives.
Key Specifications
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Displacement range: 80 cm³/rev to 250 cm³/rev (extended models up to 315 cm³/rev)
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Structural features: Modular design, flexible configuration of output shaft and bearing assembly
Typical Models
OMS 80, OMS 100, OMS 125, OMS 130, OMS 160, OMS 250, OMSS (enhanced sealing version). Example: OMS 125 (Part No. 151F2202) with displacement 125 cm³/rev.
4. OMT Series
Large-displacement LSHT gerotor motors, suitable for high-torque applications such as heavy machinery and industrial mixers. They adopt a disc valve system for stable performance.
Key Specifications
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Displacement range: 400 cm³/rev to 800 cm³/rev (e.g., OMT 400 with 410.9 cm³/rev (25.07 in³/rev))
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Mounting flange: 4-bolt square flange (pilot diameter 125 mm, bolt circle diameter 160 mm)
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Shaft type: Straight shaft (40 mm diameter) with M12×1.75 thread at the end
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Port specifications: Side port (G3/4), drain port (G1/4)
Typical Models
OMT 400, OMT 500, OMT 630, OMT 800. Example model: OMT 400 (Part No. 151B3004) with rectangular keyway (A12×8×70 mm, DIN 6885).
5. J/H/S/T Series
Low-pressure general-purpose gerotor motors, small in size but powerful, suitable for light-duty applications such as harvesters, brush cutters and turf equipment.
Key Specifications
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Displacement range: 5 cm³/rev (0.3 in³/rev) to 22.8 cm³/rev (1.4 in³/rev)
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Continuous pressure rating: 200 bar (2900 psi)
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Technology: Gerotor/geroler design with integrated valve slots in the output shaft for smooth low-speed operation
Typical Models
J series (J10, J15), H series (H10, H15), S series (S10, S20), T series (T15, T22). They are optimized for low-flow and low-speed working conditions.
Notes
1. The above models and specifications cover mainstream products; customized versions are available for specific application requirements.
2. For detailed technical parameters (e.g., maximum torque, speed range, efficiency), refer to the official Danfoss technical data sheets.
3. Replacement parts and compatible models (e.g., for Sauer Danfoss, Eaton) are available in the market for most series.
danfoss Cycloid motor
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