MOTORS Technical Information

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Contents Chapter 1 General data_____________________________________________________________ 6 Oil type _________________________________________________________________________________7 Fluid viscosity & filtration __________________________________________________________________7 Installation & start-up _____________________________________________________________________7 Motor protection _________________________________________________________________________7 Hydraulic motor safety precaution ___________________________________________________________8 Motor/brake precaution __________________________________________________________________________...

4 Porting _________________________________________________________________________________26 End Ported – Offset _____________________________________________________________________________ 26 Side ported – Radial ____________________________________________________________________________ 26 DR 600 Series ___________________________________________________________________________27 Housings _____________________________________________________________________________________ 27 4-hole, Wheel Mount ___________________________________________________________________________ 27 Technical Information...

5 Series Descriptions _____________________________________________________________________________ 53 Features/ Benefits ______________________________________________________________________________ 53 Typical Applications _____________________________________________________________________________ 53 Specification __________________________________________________________________________________ 54 Displacement Performance _______________________________________________________________________ 54 D9 (800/801 Series) ______________________________________________________________________59...

Chapter 1 General dataTopics: • Oil type • Fluid viscosity & filtration • Installation & start-up • Motor protection • Hydraulic motor safety precaution • Typical Motor/Brake Schematic • Motor circuits • Product testing • Allowable bearing & shaft loading • Vehicle drive calculations • Induced side load • Hydraulic equations • Speed sensors • Protection circuity • Internal drain • Valve cavity WHITE can accept no responsibility for possible errors in catalogues, brochures, and other printed material. WHITE reserves the right to alter its products without notice. This also applies to products...

Oil type Hydraulic oils with anti-wear, anti-foam and demulsifies are recommended for systems incorporating these motors. Straight oils can be used but may require VI (viscosity index) improvers depending on the operating temperature range of the system. Other water based and environmentally friendly oils may be used, but service life of the motor and other components in the system may be significantly shortened. Before using any type of fluid, consult the fluid requirements for all components in the system for compatibility. Testing under actual operating conditions is the only way to determine...

Hydraulic motor safety precaution A hydraulic motor must not be used to hold a suspended load. Due to the necessary internal tolerances, all hydraulic motors will experience some degree of creep when a load induced torque is applied to a motor at rest. All applications that require a load to be held must use some form of mechanical brake designed for that purpose. Motor/brake precaution Caution! The motors/brakes are intended to operate as static or parking brakes. System circuitry must be designed to bring the load to a stop before applying the brake. Caution! Because it is possible for some...

Typical Motor/Brake Schematic Figure 1 Typical Motor/ Brake schematic Once all system connections are made, one release port must be opened to atmosphere and the brake release line carefully charged with fluid until all air is removed from the line and motor/brake release cavity. When this has been accomplished the port plug or secondary release line must be reinstalled. In the event of a pump or battery failure, an external pressure source may be connected to the brake release port to release the brake, allowing the machine to be moved. Note: It is vital that all operating recommendations be...

10 In a parallel connection all of the motor inlets are connected. This makes the maximum system pressure available to each motor allowing each motor to produce full torque at that pressure. The pump flow is split between the individual motors according to their loads and displacements. If one motor has no load, the oil will take the path of least resistance and all the flow will go to that one motor. The others will not turn. If this condition can occur, a flow divider is recommended to distribute the oil and act as a differential. Figure 3 Parallel connection Note: The motor circuits shown...

Product testing Performance testing is the critical measure of a motor’s ability to convert flow and pressure into speed and torque. All product testing is conducted using a state of the art test facility. This facility utilizes fully automated test equipment and custom designed software to provide accurate, reliable test data. Test routines are standardized, including test stand calibration and stabilization of fluid temperature and viscosity, to provide consistent data. The example below provides an explanation of the values pertaining to each heading on the performance chart. Figure 4 Product...

Allowable bearing & shaft loading This catalog provides curves showing allowable radial loads at points along the longitudinal axis of the motor. They are dimensioned from the mounting flange. Two capacity curves for the shaft and bearings are shown. A vertical line through the centerline of the load drawn to intersect the x-axis intersects the curves at the load capacity of the shaft and of the bearing. In the example below the maximum radial load bearing rating is between the internal roller bearings illustrated with a solid line. The allowable shaft rating is shown with a dotted line. The...