Vickers | 25M55A-1C20
25M55A 1C20
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The 25M55A 1C20 hydraulic motor is manufactured by Vickers and belongs to the Vane Motors series. It converts pressurized fluid into rotary motion for automated hydraulic equipment. A balanced cartridge assembly keeps internal thrust loads even across the cam ring, while the positive-displacement design delivers a fixed volume per revolution for predictable speed control. Inside, a vane arrangement with ten vanes maintains sealing as they follow the housing contour. Bidirectional rotation allows the shaft to turn either direction without changing plumbing. Installation is handled by a face mount that incorporates an SAE 2-bolt flange, giving a standardized footprint for compact power modules.
The external case drain exits through a port in the cover so excess flow can return directly to tank without entering the work circuit. Output torque is rated at 55 lb-in for every 100 psi of inlet pressure, helping designers match motor size to load demand. Working ports use an in-line arrangement and accept SAE 4-bolt flange fittings to keep hoses parallel to the mounting surface. A dual-alternate pressure plate balances hydraulic forces across the rotor and limits leakage under high pressure. Together these features provide stable operation in hydraulic automation systems.
Technical Specifications
Cartridge Type
Balanced
Displacement Type
Positive-Displacement
Drain Port Location
Cover
Drain Type
External
Motor Type
Vane
Mounting Flange
SAE 2-Bolt
Mounting Type
Face Mount
Nominal Torque Rating
55 lb-in/100 psi
Number Of Vanes
10
Port Connection Type
SAE 4-Bolt Flange
Port Orientation
In-Line
Pressure Plate Type
Dual-Alternate
Rotation
Bidirectional
1620 Old Apex Road
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