Shijiazhuang Laiye Import& Export Trading Co., Ltd. is one of the leading manufacturers and suppliers of omr bmr hydraulic motor in China, also supports customized service. If you're going to wholesale high quality omr bmr hydraulic motor made in China, welcome to get pricelist from our factory.
Product Information
The OMR BMR hydraulic motor is a BM2 series cycloidal motor. It sits in the middle of the cycloidal motor family - above the entry-level BMM, below the upgraded BM3.
It's the standard-duty option. The one you choose when BMM is too light and BM3 is more than you need. If your application runs at medium-low pressure and needs reliable direct drive, this is the motor that fits.
Inside, a cycloidal gear set does the work. Hydraulic pressure drives a rotor in planetary motion inside a stator. The result is smooth rotation, even at very low speeds, with high starting torque.
The BM2 series is known for: compact size, shock resistance, low-speed stability, and good self-priming capability. It's not the fanciest motor in the lineup, but it's the one that gets the job done day after day.
How a cycloidal motor works - the short version
Inside the motor, two gears work together. One is fixed (the stator). The other rotates inside it (the rotor). The rotor has one fewer tooth than the stator.
Hydraulic oil flows in, pushes the rotor, and makes it roll around the inside of the stator. This rolling motion turns the output shaft. Smooth, steady rotation with no stalling, even at low speeds.
The design gives you three things:
High starting torque - enough to move heavy loads from a dead stop
Smooth low-speed operation - no jerking, no stalling
Compact size - fits in tight spaces where other motors won't
This is why cycloidal motors are used in direct drive applications.
Product description
Key specifications
| Parameter | Value |
|---|---|
| Series | BM2 (BMR/OMR) |
| Type | Cycloidal hydraulic motor |
| Primary Application | Direct drive, medium-low pressure, high torque |
| Key Features | Compact structure, shock resistance, low-speed stability, high starting torque |
Installation notes
Mounting: Standard flange and shaft options. Confirm configuration matches your equipment.
Ports: Standard hydraulic ports. Check thread type and size.
Start-up: Run at reduced pressure first. Check connections before full load.
Maintenance: Accessible without full disassembly. Keep oil clean, check temperature.
Oil: Use recommended hydraulic oil. Monitor temperature regularly.
Where it belongs
The OMR BMR hydraulic motor is widely used in applications requiring direct drive, medium-low pressure, and high torque:
Construction machinery - drive wheels, rotary platforms
Agricultural machinery - rotating devices, implement drives
Conveyor belt drives - material handling systems
Valve actuators - opening and closing of large valves
Rotary platforms - turntable drives, indexing tables
About the company
Shijiazhuang Laiye Import & Export Trading Co., Ltd., part of Hebei Onederful® Hydraulic Technology Co., Ltd., has been making hydraulic components since 1988 - over 35 years.
We're a factory, not a trading company. Around 200 employees. Full in-house production: casting, machining, assembly, testing, phosphating.
Products go to Russia, Europe, the Middle East, South America, and Asia. ISO 9001 certified. Every motor is tested individually, with data linked to its serial number.
FAQ
Q: What's the difference between the BM2 and a gear motor?
A: A gear motor uses two meshing gears - simple and cheap, but poor low-speed performance. A BM2 is a cycloidal motor - smooth low-speed operation, high starting torque, and better shock resistance. If your application runs at low speed, the BM2 is the better choice.
Q: What happens if the motor loses prime or won't self-prime?
A: Check the suction line first - air leaks are the most common cause. Check oil level, check for restrictions in the inlet line. The BM2 has good self-priming capability, but it can't overcome a blocked inlet or an air leak.
Q: The motor runs but torque feels low - what's wrong?
A: First, check system pressure at the motor inlet. If pressure is low, check the pump and relief valve. If pressure is normal, internal leakage is likely - the motor is worn. Check oil cleanliness - contaminated oil causes wear. If the oil is clean, the motor may need rebuilding.
Q: What if the motor runs at uneven speed or surges?
A: Usually air in the system or a sticky internal component. Bleed the air first. If that doesn't fix it, check for contamination in the oil - dirt can cause the rotor to bind intermittently. Check the inlet filter for blockage.
Q: What's the most common failure in the BM2 series?
A: Wear from contaminated oil. The cycloidal gear set runs on tight clearances - dirt scores the surfaces, internal leakage increases, torque drops off. Clean oil is the single most important factor in motor life. Change filters regularly, monitor oil condition.
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