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BM2
cissoko
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The BM2 series is a highly versatile, medium-duty spool valve orbital hydraulic motor utilizing an advanced Geroler gear set design. It represents an optimized bridge between compact light-duty motors and larger heavy-duty disc valve motors. By embedding high-precision steel rollers into the outer ring teeth, the BM2 delivers excellent mechanical efficiency, a low startup pressure, and highly stable low-speed performance under fluctuating cyclic loads.
Geroler Roller Technology: Built with rolling contacts instead of sliding tooth profiles, reducing internal friction, damping operation noise, and extending component life under high-pressure duty cycles.
Spool Valve Distribution: Integrates the oil distribution channels directly onto the output shaft, providing a highly compact, lightweight frame that is ideal for machines with strict space constraints.
Dual Ball Bearing Support: The output shaft assembly is supported by dual deep groove ball bearings (or needle bearings depending on variant), allowing the motor to handle moderate radial and axial forces from direct-mounted chain sprockets or pulleys.
High-Pressure Shaft Seal: Fitted with an advanced dynamic shaft seal that withstands high continuous backpressure, enabling flexible series or parallel multi-motor system plumbing.
Internal Check Valves: Features internal non-return check valves that auto-vent internal casing pressure to the return line, reducing the absolute need for an external third-line case drain under standard low-backpressure operating conditions.
| Parameter | Range / Value | Metric & US Units | Notes |
|---|---|---|---|
| Displacement | 50 ~ 500 | cc/rev (cm³/rev) | Standard displacement options include 50, 80, 100, 125, 160, 200, 250, 315, 400, 500. |
| Max. Speed | 5 ~ 800 | RPM | 50cc small displacement continuous speed up to 800 RPM; 500cc large displacement max continuous speed approx. 150 RPM. |
| Max. Continuous Torque | 100 ~ 570 | N·m | Medium torque grade; core displacement (160cc-315cc) can steadily output 300-530 N·m during continuous operation. |
| Max. Intermittent Torque | 120 ~ 700 | N·m | Peak torque allowed under instant startup, shifting impact or temporary overload. |
| Max. Continuous Pressure | 100 ~ 165 | bar (approx. 1450 ~ 2400 psi) | Small to medium displacement withstands 140-165 bar continuously; pressure gradually drops to 100 bar for displacement above 400cc. |
| Max. Intermittent Pressure | 145 ~ 225 | bar (approx. 2100 ~ 3260 psi) | Maximum pulse pressure allowed during instant shifting, braking or temporary overload of the system. |
| Max. Peak Pressure | 175 ~ 225 | bar (approx. 2540 ~ 3260 psi) | Maximum instantaneous safe ultimate pressure the system can withstand within extremely short seconds. |
| Max. Oil Flow | 45 ~ 60 | L/min (approx. 12 ~ 16 US gpm) | Max recommended continuous input flow for hydraulic motor, excess flow will cause increased internal flow resistance and overheating. |
| Max. Output Power | 5.0 ~ 15.0 | kW | Medium power transmission motor, providing cost-effective compact power output. |
Applications
Agricultural & Forestry Machinery
Drives conveyor rollers and cutter heads in combine harvesters.
Powers seed meters and fertilizer spreading discs.
Operates heavy-duty wood chipper feed rollers and log grab rotators.
Construction & Municipal Equipment
Acts as the core drive for skid steer attachments like sweepers, road planers, and snow blowers.
Drives track/wheel traction and cabin swing mechanisms on compact excavators.
Powers light-duty drilling rigs and roadway brush cleaners.
Marine & Deck Machinery
Drives anchor winches, mooring winches, and fishing net haulers.
Provides power to crane slewing drives on ship decks under harsh marine environments.
Industrial Transmission & Mining
Powers heavy-duty belt conveyors and screw conveyors (augers) for materials like coal and gravel.
Drives industrial mixers, blenders, and injection molding screw pre-plasticizers.
Special Vehicle Wheel Drives
Utilizes wheel-mount (recessed) configurations to directly drive the wheels of aerial work platforms, scissor lifts, and mini track dumpers.
BM2 Motors are typically packaged securely to prevent damage during transit. The packaging includes:
Protective Wrapping: To safeguard the pump from environmental damage.
Custom Crates: For larger, heavier pumps, ensuring safe handling.
Documentation: Includes installation, maintenance instructions, and warranty details.
Delivery time depends on the model, customizations, and location but typically ranges from 2 to 6 weeks from the order date.
Choose the 25mm or 32mm straight shaft (with keyways) for standard direct couplings, flexible inserts, or simple keyed pulleys.
Choose the 6-spline shaft if your application involves high starting torque, heavy vibration, or frequent, rapid direction reversals, as splines distribute rotational stress much more evenly across the teeth to prevent key shearing.
Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.
BM2 Motor are manufactured in compliance with international standards, ensuring high performance and reliability:
ISO 9001: Certified for quality management systems.
CE Certification: Ensures compliance with European safety, health, and environmental protection standards.
RoHS Compliance: Ensures the motor does not contain hazardous materials.
Factory Testing: Every Motor is rigorously tested for performance, pressure, and leak integrity before shipping.
1.What's our advantages?
Factory established in 2005;
With a great deal of production experience;
80+ employees become the professional team;
Constant updated ERP system ensure efficiency of work;
Sophisticated equipment ehanced the accuracy of products;
Professional salesmen provide the greast service;
With a large number of famous customers all over the world;
Great after-sales service;
With the long term cooperation with famous logistics and express company in China,provide the better goods service.
Small order/sample order,full payment in advance; Big orders send the first payment 30% before the production,and the balance before shippment.We'll show the photos of the products and packages before delivery.
Of course we can. Just send me your logo we can make it for you.
America(40.5%):USA, Canada, Argentina, Brazil
Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.
Asia(23.5%):Korea,singapore,India,Turkey,Vietnam,Saudi Arabia,Syria, Israel,Lebanon.
Others(5.8%).
The Cissoko hydraulic pump manufacturing facility is a specialized industrial plant that focuses on producing hydraulic pumps and related components. These factories are equipped with advanced machinery and technology to fabricate high-quality pumps designed for a wide range of applications, from heavy equipment and machinery to automotive and industrial systems.
The production process typically involves precision engineering, where raw materials like metals and alloys are processed into pump components such as gears, pistons, cylinders, and seals. These parts are then assembled into fully functional hydraulic pumps, which are tested for performance and quality control to ensure reliability, efficiency, and durability under various working conditions.
Cissoko Hydraulic's manufacturing facilities for hydraulic pumps maintain stringent quality standards, often adhering to international certifications, to meet the expectations of customers in industries such as construction, agriculture, automotive, and manufacturing.
All hydraulic pumps produced by Cissoko Hydraulic have undergone compliance testing, ensuring their quality and reliability.
To meet the diverse needs of different industries, the Cissoko hydraulic offer customization options, such as specialized seals, materials, and pump configurations. These facilities often work closely with engineering teams to develop tailored solutions for specific applications, from high-pressure systems to low-flow, high-efficiency pumps.
Each pump undergoes a rigorous quality control process, where pressure tests and performance assessments are conducted to ensure that the pumps meet the required standards for flow rate, pressure capacity, and durability.
