XJ20 Catalogue
32Pages

XJ20RADIAL PISTON MOTOR You are at the centre of everything we do

Rotary Power specialises in the design, development and manufacture of hydraulic motors and pumps. With a history dating back over 50 years, we understand the exacting and demanding requirements of today’s hydraulic applications. Operating from 18,000 sq. m. of purpose built manufacturing facilities, based in the North East of England and Bangalore, India, we continue to invest in the latest CNC machinery, automation and testing facilities. We have a clear focus on continuous improvement in lean cellular manufacturing. These facilities, alongside our European and US operations, offer sales,...

The XJ range of hydraulic motors offer displacements from 260 to 5,010 cc/rev. The XJ05 is the smallest of the range with displacements from 260 to 565 cc/rev, complemented by the larger XJ20 and XJ40 motors extending the displacement range to 2,505 and 5,010 cc/rev. The XJ motor has a range of features and options designed to suit your specific application: • • • • • • • • Radial piston, multi-stroke operation Modular design Two speed options Parking brake options Freewheel capability Multiple mounting arrangements 350 bar continuous pressure Fast delivery options The motor is designed...

PRODUCT FEATURES Fluids FIRST DISPLACEMENT *Maximum values should only be applied for a small portion of the duty cycle.

QUICK SELECTION DIAGRAM Based on your torque and speed requirements, the diagram below can be used to help determine which cam size best suits your application. Shown for both maximum displacement (1D) and minimum displacement (2D), the diagram outlines the limits of the motor based on its continuous power rating. Maximum Available Torque (Nm) Maximum Available Speed (rpm) Maximum Available Torque (lbf.ft)

NO LOAD PRESSURE DROP Pressure Drop Across Motor (psi) Pressure Drop Across Motor (bar) VOLUMETRIC EFFICIENCY Volumetric Efficiency (%) All performance graphs plotted for maximum displacement (2,505 cc/rev) using ISO46 fluid at 50°C. 6

(For models shown below) Other spline options available, contact us for more information. See page 22 for hydraulic connection options.

(For models shown below) Other spline options available, contact us for more information. See page 22 for hydraulic connection options.

A2 (For models shown below) See page 22 for hydraulic connection options.

A2 (For models shown below) 181 kg [399 lb] with P brake 168 kg [370 lb] with Q brake See page 22 for hydraulic connection options.

SHAFT MOTOR OUTPUT OPTIONS XJ20 HOUSING - KEYED OUTPUT 2 HOLES M14x2.0px23 DEEP ON A 2 HOLES 35 [1.38] PCD M14x2.0px23 DEEP ON A 35 [1.38] PCD KEYED OUTPUT - XJ20 HOUSING KEYED OUTPUT - XJ20 HOUSING KEYED OUTPUT - XJ20 HOUSING NOTE: ALL DIMENSIONS BEYOND FACE A A 25 0.98 ARE AS PER MAIN DRAWING 25 0.98 NOTE: ALL DIMENSIONS BEYOND FACE A KEYED OUTPUT - XJ40 HOUSING PER MAIN DRAWING ARE AS NOTE: ALL DIMENSIONS BEYOND FACE 2 HOLES M14x2.0px23 DEEP ON A 2 HOLES 70 [2.76] PCD M14x2.0px23 DEEP ON A 70 [2.76] PCD CENTRE TAPPING DS M12 DIN332 18 OFF CENTRE TAPPING MOUNTING 385 15.16 M12 DIN332 DS...

SHAFT MOTOR PERMISSIBLE DYNAMIC AND STATIC RADIAL LOAD Axial Position from Shaft End (in) 0.0 Maximum Permissible Radial Load (lbf) Maximum Permissible Radial Load (kN) 0 Axial Position from Shaft End (mm) Static Radial Load Dynamic Radial Load SHAFT MOTOR L10 LIFE AT 150 BAR, 42.5 RPM L10 life at 150 bar, 42.5 rpm - Shaft motor -7.9 250 Axial Position from End of Shaft (in) -2.0 0.0 2.0 Maximum Permissible Radial Load (lbf) Maximum Permissible Radial Load (kN) -50 0 50 Axial Position from End of Shaft (mm) 2000 Hours plotted speed (rpm) x plotted life (hours) desired speed (rpm) Contact us...

A2 (For models shown below) See page 22 for hydraulic connection options.

A2 (For models shown below) 181 kg [399 lb] with P brake 168 kg [370 lb] with Q brake See page 22 for hydraulic connection options.

WHEEL MOTOR PERMISSIBLE DYNAMIC AND STATIC RADIAL LOAD Axial Position from Wheel Flange (in) 0.0 3.9 Maximum Permissible Radial Load (lbf) Maximum Permissible Radial Load (kN) -100 0 100 Axial Position from Wheel Flange (mm) Dynamic Radial Load Static Radial Load WHEEL MOTOR L10 LIFE AT 150 BAR, 42.5 RPM -11.8 250 Axial Position from Wheel Flange (in) 0.0 3.9 Maximum Permissible Radial Load (lbf) Maximum Permissible Radial Load (kN) -100 0 100 Axial Position from Wheel Flange (mm) 1000 Hours plotted speed (rpm) x plotted life (hours) desired speed (rpm) Contact us for alternative cycle...

PRODUCT CAM FRONT MODULE PORT MODULE REAR BRAKE OPTIONS SPECIALS DESIGN The XJ20 multi-disc parking brake is a spring applied, hydraulic release, fail safe brake designed to be used with XJ20 motors in static situations. The multi-disc brake has a modular design which ensures it can be connected to any variant of the XJ20 motor. The brake has two hydraulic release ports, one at the top of the housing and one at the bottom. The brake can be manually released by removing the plug in the cover and using an M16 screw to pull the piston back.

(1) Do not run in brake, wearing the plates will reduce the static capacity. (2) Dynamic use of the brake is not recommended and should only be used in emergency situations. (3) The disc pack should be replaced after ten dynamic uses. (4) Times may vary depending on fluid viscosity and valves used. (5) During low temperature applications, flushing the brake housing is recommended to maintain a constant oil viscosity. All data is based on ISO46 fluid at 50°C/122°F. If a different fluid will be used, please consult Rotary Power.

PRODUCT CAM FRONT MODULE PORT MODULE REAR BRAKE OPTIONS SPECIALS DESIGN The XJ motor code defines the starting direction of the motor. This is selected by the customer to best suit their application needs. The starting direction is based on flow being supplied to port A. A single speed motor can have its starting direction reversed by supplying flow to port B. In two speed motors, pressurising port A is preferred as this prevents the motor from recirculating high pressure oil when shifted into second displacement. It is important to select the correct starting direction of a two speed motor...