BMH series motor adapt the advanced Geroler gear set design with shaft distribution flow, which
can automatically compensate in operating with high pressure, provide reliable and smooth operation,
high efficiency and long life.
*Advanced manufacturing devices for the Gerolor gear set, which use low pressure of start-up,
provide smooth, reliable operation and high efficiency.
*Shaft seal can bear high pressure of back and the motor can be used in parallel or series.
*Special design in the driver-linker and prolong operating life.
*Special design for distribution system can meet the requirement of low noise of unit.
*Compact volume and easy installation.
BMH Hydraulic Orbit Motor
|Geometric displacement (cm3 /rev.)||203.2||255.9||316.1||406.4||489.2|
BM Series Orbit hydraulic motor product manual
1. Matters needing attention
1.1 Output steering
1.2 The correct use of the motor will directly affect the working life. Therefore, the following basic requirements must be met.
1.2.1 System requirements
1.2.2 System hydraulic oil requirements
According to the different ambient temperature and usage, the oil used should have good viscosity-temperature performance, good defoaming properties, anti-oxidation, anti-rust, high flash point, etc. During the operation of the motor, its viscosity is between (25-70)*10-6m2/s, and the water, alkali and mechanical impurities in the oil must not exceed the allowable value.
2. Motor installation
Before installation, check whether the motor is damaged. The motor oil stored for a long time needs to be drained and rinsed to prevent the internal moving parts from sticking.
The motor mounting bracket must have sufficient rigidity to prevent shock and vibration during rotation.
The mounting bolts must be tightened evenly.
Connection method of drain pipe:
The BMR motor has two built-in check valves, and the leaked oil can return to the oil return pipe through the check valve
A) When the oil return pressure is ≤1Mpa, there is no need to connect the drain pipe;
B) When the oil return pressure is greater than 1Mpa, the drain pipe must be connected. (Drain pipe location diagram)
When the system is connected, the relationship between the installation position of the motor inlet and outlet on the installation drawing and the rotation of the motor should be recognized. During the installation, it was found that the oil inlet and outlet are not suitable for the corresponding positive and negative rotation directions of the output shaft. Replacing the installation of the oil inlet and outlet pipes for the A and B chambers can achieve the opposite effect to the original working rotation direction.
3. Use of the motor
3.1 Use of motor
4. Motor troubleshooting
The motor is a precision component, which needs to be installed, commissioned and repaired by professionals. Without our company's consent, it is not allowed to dismantle and repair it by yourself. If the user unit has the conditions for dismantling and inspection with the permission of our company, after reading the instructions carefully, you can dismantle and inspect it yourself, but you must pay attention to the following three points:
|Serial number||Fault phenomenon||The Reason||Exclude|
|1||The motor does not rotate||Hydraulic pump does not start||Turn on the hydraulic pump|
|Insufficient oil in the tank||oil|
|Directional valve in neutral||Open the directional valve|
|System overflow valve fully open||The system pressure is adjusted to the specified value|
|Motor torque is not enough||Replace the motor|
|2||There is abnormal noise when the motor is running||There is air in the hydraulic system||Find out the reason for the intake air and discharge the air in the oil|
|Vacuum||Increase fuel supply|
|Motor failure||Replace the motor|
|Support bearing is broken||Replace bearing|
|3||Motor leakage||Damaged seal||Replace the seal|
|Parts have pores, trachoma, cracks, etc.||Replacement parts|
|4||Motor heat||Hydraulic oil temperature is too high||Increase cooling capacity|
|Low motor efficiency||Replace wearing parts|
|Abnormal wear||Replace the motor|
|5||Increased oil leakage at the outer drain hole||Abnormal wear at the distribution shaft||Replacement parts|
|Wear of the needle column group of the cycloid wheel stator body|
5. Motor maintenance and post-processing
Regularly check the accessories in the hydraulic system, the accuracy of pressure gauges, thermometers, etc.
The manufacturer is not responsible for the consequences caused by the user not following the above recommendations or using the motor incorrectly.