Low Speed High Torque Hydraulic Motor FAQ: BM5 Integration and Care

Can the BM5 hydraulic motor be installed in series or parallel?

Yes. The BM5 supports both series and parallel connection modes. The correct arrangement depends on the hydraulic circuit and the operating requirements of the machine, so the circuit design should identify the required connection mode before ordering.

The motor also has flexible options for flange, output shaft, and oil port configurations. For a replacement or new installation, match these interfaces to the machine drawing and coupling arrangement. See the BM5 low speed high torque hydraulic motor product page for the product details.

What connection details should I check before ordering a BM5 motor?

Check the required flange, output shaft, and oil port configuration against the equipment layout. These options allow the motor to fit different system arrangements, but the selected interfaces must match the machine's mounting and drive connection.

Also confirm whether the hydraulic circuit requires series or parallel installation. Send the supplier the relevant machine drawing, interface dimensions, and required quantity so the configuration can be matched before an order is prepared.

What oil temperature and viscosity range suit the BM5?

The normal oil temperature range is 20°C to 60°C. The maximum system temperature is 90°C for no more than one hour. Oil viscosity at 40°C should be 42 to 74 mm²/s.

A system designer should compare these ranges with the machine's working cycle. For equipment operating in changing conditions, include oil temperature and viscosity in the maintenance checks.

What filtration level does the BM5 require?

The BM5 is specified for filtration accuracy of 10 to 30 microns, with a pollution level of no more than 19/16. Keeping the hydraulic fluid within these conditions helps the motor operate with the intended oil cleanliness.

Filter selection should be coordinated with the complete hydraulic circuit. Check the filter arrangement and fluid condition during scheduled maintenance, especially when the motor is used in equipment exposed to contamination.

Is a break-in period required for the BM5?

Yes. The BM5 requires one hour of break-in at 30% of rated pressure. Plan this step during commissioning and keep the motor within the specified condition during the break-in period.

The optimal load range is 1/3 to 2/3 of the rated condition. For a new installation, prepare the commissioning plan around this range and record the operating conditions used during the initial run.

What load and return-pressure conditions should I review?

The BM5 uses a double-rolling bearing structure and is designed to support radial and axial loads. The optimal operating range is 1/3 to 2/3 of rated condition. Oil return pressure is limited to 10 MPa at speeds below 200 rpm.

Picture a conveyor or drilling machine starting under load: the installation team should compare the expected operating point with the rated condition, then check the return-pressure condition at the intended low speed. Send the machine's load, speed, connection layout, and oil-circuit details when requesting a configuration review.