Shijiazhuang Laiye Import& Export Trading Co., Ltd. is one of the leading manufacturers and suppliers of bm2 series — high-pressure gerotor motor in China, also supports customized service. If you're going to wholesale high quality bm2 series — high-pressure gerotor motor made in China, welcome to get pricelist from our factory.
Product Overview
The BM2 is a gerotor motor. Feed it oil under pressure, and the shaft turns. Inside, a spool valve sends oil to the gerotor set. The gerotor set rotates. The shaft follows.
Distribution accuracy is better than older designs. Less oil slips past the internal seals. More of the flow becomes useful torque. Less becomes heat.
The BM2 runs at higher pressures than the BM1. Continuous pressure is 14 MPa. That is enough for tougher jobs-heavier loads, harder cycles.
Reversing is simple. Swap the inlet and outlet lines. The motor spins the other way. No extra valving needed.
We offer different flanges, shafts, and port configurations. We can match your machine. Just tell us what you need.
What Makes It Different
The roller gerotor design gives better oil distribution. That means less slip. More torque from the same flow. You get more work out of the oil you put in.
The improved distribution also cuts internal losses. Less energy wasted. The motor runs cooler. It does not heat up the oil as much.
The shaft seal handles high backpressure-up to 10 MPa. Run motors in series if you need to. Run them in parallel. The seal does not complain.
Size matters. The BM2 Series - High-Pressure Gerotor Motor takes up less space than piston motors with the same displacement. Fits where space is limited.
Low-speed operation is smooth. The spool valve design keeps the motor steady. No jerking. No chattering. Just smooth rotation.
Reversal is simple. Swap the flow lines. The motor spins the other way. That is all.
We have variations in flanges, shafts, and ports. Tell us what you need. The BM2 Series - High-Pressure Gerotor Motor is built for demanding applications where reliability matters.
Specifications
| Parameter | Value |
|---|---|
| Series | BM2 |
| Displacement range | 50 - 500 cc/rev |
| Max. continuous pressure | 14 MPa |
| Max. intermittent torque | Up to 500 N·M |
| Max. speed | Up to 730 RPM |
| Max. flow | Up to 58 L/min |
| Max. working temperature | 80°C |
| Max. back pressure | 10 MPa (recommended ≤5 MPa) |
| Recommended fluid | 68# anti-wear hydraulic oil |
| Recommended viscosity | 37 - 73 cSt |
| Recommended cleanliness | ISO 18/13 |
Where You Use These Motors
The BM2 handles medium to heavy-duty jobs. Here is where it shows up.
Agricultural equipment. Combines, balers. The BM2 runs conveyors, augers, and fans. Works long hours in the field.
Construction equipment. Small excavators, skid steers. The BM2 runs cooling fans and winch drives. Auxiliary functions that keep the machine going.
Industrial machinery. Palletizers, packaging lines, conveyors. Smooth rotary power for moving things around.
Marine applications. Deck machinery, winches. The BM2 runs auxiliary hydraulic jobs on boats and ships.
Mobile equipment. Sweepers, aerial platforms. The BM2 drives attachments and small hydraulic systems.
About the Company
We started in 1988. Over 35 years in hydraulic components. Our team has more than 200 people. Some have been here twenty years.
We are a factory. We machine, assemble, and test everything ourselves. One roof. Full control.
We ship over 10,000 containers a year. Customers in more than 20 countries-Russia, Europe, the Middle East, South America, Southeast Asia.
Quality control
Every batch goes through at least 10 checks before shipping. Each motor is tested on dedicated stands. Leakage and performance are verified.
Engineering
We have real engineering depth. Senior industry experts advise us. Our engineers continuously improve the product.
What we offer
12-month warranty from Bill of Lading date. Technical support. Shipping by sea, air, rail, truck, or express. Export packaging.
How to Work with Us
Tell us what you need
Send us your requirements. Model number, displacement, flange type, output shaft, port configuration, quantity. If you are not sure about the specification, send us your application details-required torque, speed, and operating pressure. We will recommend the right motor.
We confirm and quote
We check availability and send you a quote with pricing, delivery time, and shipping options. For custom orders, we confirm the lead time and provide a drawing for approval.
Place your order
Review the quote and confirm. We send you a proforma invoice. Payment terms: T/T for larger orders. Paypal, Western Union, or MoneyGram for smaller amounts. Payment terms are negotiable for regular customers.
Production and inspection
We start production. For standard motors, we ship from stock within 2-3 business days. For bulk orders, 10-14 business days. Custom orders take 15-25 business days depending on complexity. Every motor goes through our 10-step inspection process before packing.
Packing and shipping
Small orders go into cartons with foam inserts. Bulk orders go into export-grade plywood cases. We ship by sea, air, railway, truck, or express-you choose. We provide tracking for every shipment.
FAQ
Q: How do I choose between BM1 and BM2?
A: BM1 is for lighter duty. BM2 handles higher pressure and tougher jobs. If your system runs above 12 MPa continuous, go with BM2. If you need more torque from the same displacement, BM2 gives you better efficiency.
Q: Can the BM2 run at maximum pressure and maximum speed at the same time?
A: No. The motor should not operate at both extremes simultaneously. This is a standard limitation for hydraulic motors. Keep one parameter below max when the other is at max.
Q: What happens if I run the motor above the maximum speed?
A: The motor may cavitate. Internal parts may wear faster. Seals may fail. The motor will not last as long. Stay within the speed limits in the specification table.
Q: What happens if I run the motor above the maximum pressure?
A: The motor may leak internally. Seals may blow. The housing may crack. Do not exceed the pressure rating for your displacement.
Q: What is the standard rotation direction?
A: Standard is clockwise when port A is pressurized (viewed from the shaft end). To reverse, simply reverse the oil flow. The motor operates equally well in both directions.
Q: Do I need to run-in the motor before full-load operation?
A: Yes. Run the motor at 40% of maximum working pressure for 1 hour before full-load operation. This ensures proper break-in and extends service life.
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