China factory OEM BMW/Bk/8K Orbital Gear Motor Hydraulic Planetary Orbit Motor for Crawler Excavator/Tractor/Wheel Loader Spare Parts vacuum pump oil

Product Description

OEM BMW/BK/8K Orbital Gear Motor Hydraulic Planetary Orbit Motor for Crawler Excavator/Tractor/Wheel Loader Spare Parts

BMW series orbit hydraulic motor is an advanced hydraulic motor with valve-rotor oil distribution structure, This series hydraulic motor has the advantages of high working pressure, good stability at low speed, high working eficiency and long working life. The pressure compensation balance plate can make the motor keep high working efficiency under low flow rate and high pressure, and keep running well.During starup, the pressure causes the balance plate to bend toward the rotor, greatly improving the volume eficiency.
When the working pressure is reached, the balance plate relaxes and the rotor realizes free rotaton, which translates into higher mechanical fficiency,


BMW Series Orbit Hydraulic Motor
Main Product                BM1series hydraulic motor 
               BM2series hydraulic motor
               BM3series hydraulic motor
               BM4series hydraulic motor
               BM5series hydraulic motor
               BM6series hydraulic motor
               8Kseries hydraulic motor
               BMWseries hydraulic motor
               BK series hydraulic brake
Characteristic features: Valve- -rotor oil distribution design provides reliable and efficient oill distribution and reduces the overall length of the motor.
Pressure compensated balance plates provide high volumetic eficiency at low flow rates and high pressures.
Adopt 4 bearing structure, bearing axial and radial load capacity is strong, can directy drive the working mechanism.
Bearings are designed with oil bath lubrication for better durability and longer service lite under heavy loads.
High pressure oill seals provide superior soal performance and service life without the need for additional drain lines.
According to the requirements of customers can provide a variety of flange, output shat, oill port and other variant design.
Application  These products are used in Machinery of Engineering, Agriculture, Plastic, Fishery, mining etc,such as Mini Excavator/Weeder/Garbage Truck/Forklift/Construction Machine


Main Specification
Displacement cc/r 125 160 200 230 250 300 350 375 400 475 540 650 750
Cont. 45 60 70 70 75 80 80 75 75 75 75 75 75
Int. 60 75 85 85 90 95 95 90 90 90 90 90 90
Cont. 360 366 322 280 272 245 220 190 178 150 134 109 95
Int. 490 457 386 347 332 279 268 231 218 186 160 133 115
Cont. 20.5 20.5 20.5 20.5 20.5 20.5 20.5 20.5 20.5 17.5 14 12 10.5
Int. 24 24 24 24 26 24 24 24 24 19 17.5 15.5 12
Torque Cont. 334 464 530 637 696 818 903 1002 1057 1086 982 1018 1046
Nm Int. 391 538 600 711 786 932 1033 1146 1204 1173 1242 1283 1178


Packaging & Shipping

orbital hydraulic motor is packed by carton and wooden case or according customer request .

Product Application

Hydraulic motor was widely used in  High-altitude vehicles, small crawler excavators, drilling rigs, floor sweepers, snowplows, car carriers, hydraulic winches, oil pipe clamps, injection molding machines, mold adjusting machines, rotary arm vehicles, electric drive hubs for aerial vehicles, machinery of engineering/Agriculture/plastic/fishery/mining etc.;

Main Products

       Hydraulic Winch                           Hydraulic Hoist Winch                 Slewing  Drive Reducer 

         Final Drive Reducer                             Electric Winch                    Hydraulic Orbit Motor 

Our Company

As the most professional manufacturer of orbital hydraulic motor in China,  has the most wealth of experience and product improvement awareness in product design, process technical, quality assurance. Committed to becoming the world-class manufacturer of hydraulic products.
Main Prodcuts :
BM1series hydraulic motor 
               BM2series hydraulic motor
               BM3series hydraulic motor
               BM4series hydraulic motor
               BM5series hydraulic motor
               BM6series hydraulic motor
               8Kseries hydraulic motor
               BMWseries hydraulic motor
               BK series hydraulic brake


Q1.What’s your main application
–Construction machinery
–Industrial vehicle
–Environmental sanitation equipment
–New Energy
–Industrial Application.

Q2.What is the MOQ
–MOQ1pcs.Sample order is ok .

Q3.Can I Mark My Own Brand On The Pump
–Yes. Full order Can mark your brand and code.

Q4.How long is your delivery time
–Generally it is 2-3 days if the goods are in stock. or it is 7-15 days if the goods are not in stock and according to order quantity.

Q5.What payment method is accepted
–TT,LC,Western union,Trade assurance,VISA,Ali Pay 

Q6.How to Place your order
1).Tell us Model number ,quantity and other special requirements.
2).Proforma Invoice will be made and send for your approval.
3).Productions will be arranged CHINAMFG receipt of your approval and payment or deposit.
4).Goods will be delivered as stated on the proforma invoice.

Q7.What kind of inspection you can provide 
Chuangdong  has multiple tests from material purchasing to finished products by different departments, like QA, QC, sales representative, to guarantee all pumps are in perfect condition before shipment. We also accept the inspection by the third party you appointed.

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Certification: CE, ISO9001
Casing Protection: Closed Type
Speed: High Speed
Type: Gear Type
Product Name: Hydraulic Cycloidal/Orbit Gear Motor
Material: Cast Iron
US$ 80/Piece
1 Piece(Min.Order)




gear motor

Are there innovations or emerging technologies in the field of gear motor design?

Yes, there are several innovations and emerging technologies in the field of gear motor design. These advancements aim to improve the performance, efficiency, compactness, and reliability of gear motors. Here are some notable innovations and emerging technologies in gear motor design:

1. Miniaturization and Compact Design:

Advancements in manufacturing techniques and materials have enabled the miniaturization of gear motors without compromising their performance. Gear motors with compact designs are highly sought after in applications where space is limited, such as robotics, medical devices, and consumer electronics. Innovative approaches like micro-gear motors and integrated motor-gear units are being developed to achieve smaller form factors while maintaining high torque and efficiency.

2. High-Efficiency Gearing:

New gear designs focus on improving efficiency by reducing friction and mechanical losses. Advanced gear manufacturing techniques, such as precision machining and 3D printing, allow for the creation of intricate gear tooth profiles that optimize power transmission and minimize losses. Additionally, the use of high-performance materials, coatings, and lubricants helps reduce friction and wear, improving overall gear motor efficiency.

3. Magnetic Gearing:

Magnetic gearing is an emerging technology that replaces traditional mechanical gears with magnetic fields to transmit torque. It utilizes the interaction of permanent magnets to transfer power, eliminating the need for physical gear meshing. Magnetic gearing offers advantages such as high efficiency, low noise, compactness, and maintenance-free operation. While still being developed and refined, magnetic gearing holds promise for various applications, including gear motors.

4. Integrated Electronics and Controls:

Gear motor designs are incorporating integrated electronics and controls to enhance performance and functionality. Integrated motor drives and controllers simplify system integration, reduce wiring complexity, and allow for advanced control features. These integrated solutions offer precise speed and torque control, intelligent feedback mechanisms, and connectivity options for seamless integration into automation systems and IoT (Internet of Things) platforms.

5. Smart and Condition Monitoring Capabilities:

New gear motor designs incorporate smart features and condition monitoring capabilities to enable predictive maintenance and optimize performance. Integrated sensors and monitoring systems can detect abnormal operating conditions, track performance parameters, and provide real-time feedback for proactive maintenance and troubleshooting. This helps prevent unexpected failures, extend the lifespan of gear motors, and improve overall system reliability.

6. Energy-Efficient Motor Technologies:

Gear motor design is influenced by advancements in energy-efficient motor technologies. Brushless DC (BLDC) motors and synchronous reluctance motors (SynRM) are gaining popularity due to their higher efficiency, better power density, and improved controllability compared to traditional brushed DC and induction motors. These motor technologies, when combined with optimized gear designs, contribute to overall system energy savings and performance improvements.

These are just a few examples of the innovations and emerging technologies in gear motor design. The field is continuously evolving, driven by the need for more efficient, compact, and reliable motion control solutions in various industries. Gear motor manufacturers and researchers are actively exploring new materials, manufacturing techniques, control strategies, and system integration approaches to meet the evolving demands of modern applications.

gear motor

What are some common challenges or issues associated with gear motors, and how can they be addressed?

Gear motors, like any mechanical system, can face certain challenges or issues that may affect their performance, reliability, or longevity. However, many of these challenges can be addressed through proper design, maintenance, and operational practices. Here are some common challenges associated with gear motors and potential solutions:

1. Gear Wear and Failure:

Over time, gears in a gear motor can experience wear, resulting in decreased performance or even failure. The following measures can address this challenge:

  • Proper Lubrication: Regular lubrication with the appropriate lubricant can minimize friction and wear between gear teeth. It is essential to follow manufacturer recommendations for lubrication intervals and use high-quality lubricants suitable for the specific gear motor.
  • Maintenance and Inspection: Routine maintenance and periodic inspections can help identify early signs of gear wear or damage. Timely replacement of worn gears or components can prevent further damage and ensure the gear motor’s optimal performance.
  • Material Selection: Choosing gears made from durable and wear-resistant materials, such as hardened steel or specialized alloys, can increase their lifespan and resistance to wear.

2. Backlash and Inaccuracy:

Backlash, as discussed earlier, can introduce inaccuracies in gear motor systems. The following approaches can help address this issue:

  • Anti-Backlash Gears: Using anti-backlash gears, which are designed to minimize or eliminate backlash, can significantly reduce inaccuracies caused by gear play.
  • Tight Manufacturing Tolerances: Ensuring precise manufacturing tolerances during gear production helps minimize backlash and improve overall accuracy.
  • Backlash Compensation: Implementing control algorithms or mechanisms to compensate for backlash can help mitigate its effects and improve the accuracy of the gear motor.

3. Noise and Vibrations:

Gear motors can generate noise and vibrations during operation, which may be undesirable in certain applications. The following strategies can help mitigate this challenge:

  • Noise Dampening: Incorporating noise-dampening features, such as vibration-absorbing materials or isolation mounts, can reduce noise and vibrations transmitted from the gear motor to the surrounding environment.
  • Quality Gears and Bearings: Using high-quality gears and bearings can minimize vibrations and noise generation. Precision-machined gears and well-maintained bearings help ensure smooth operation and reduce unwanted noise.
  • Proper Alignment: Ensuring accurate alignment of gears, shafts, and other components reduces the likelihood of noise and vibrations caused by misalignment. Regular inspections and adjustments can help maintain optimal alignment.

4. Overheating and Thermal Management:

Heat buildup can be a challenge in gear motors, especially during prolonged or heavy-duty operation. Effective thermal management techniques can address this issue:

  • Adequate Ventilation: Providing proper ventilation and airflow around the gear motor helps dissipate heat. This can involve designing cooling fins, incorporating fans or blowers, or ensuring sufficient clearance for air circulation.
  • Heat Dissipation Materials: Using heat-dissipating materials, such as aluminum or copper, in motor housings or heat sinks can improve heat dissipation and prevent overheating.
  • Monitoring and Control: Implementing temperature sensors and thermal protection mechanisms allows for real-time monitoring of the gear motor’s temperature. If the temperature exceeds safe limits, the motor can be automatically shut down or adjusted to prevent damage.

5. Load Variations and Shock Loads:

Unexpected load variations or shock loads can impact the performance and durability of gear motors. The following measures can help address this challenge:

  • Proper Sizing and Selection: Choosing gear motors with appropriate torque and load capacity ratings for the intended application helps ensure they can handle expected load variations and occasional shock loads without exceeding their limits.
  • Shock Absorption: Incorporating shock-absorbing mechanisms, such as dampers or resilient couplings, can help mitigate the effects of sudden load changes or impacts on the gear motor.
  • Load Monitoring: Implementing load monitoring systems or sensors allows for real-time monitoring of load variations. This information can be used to adjust operation or trigger protective measures when necessary.

By addressing these common challenges associated with gear motors through appropriate design considerations, regular maintenance, and operational practices, it is possible to enhance their performance, reliability, and longevity.

gear motor

How does the gearing mechanism in a gear motor contribute to torque and speed control?

The gearing mechanism in a gear motor plays a crucial role in controlling torque and speed. By utilizing different gear ratios and configurations, the gearing mechanism allows for precise manipulation of these parameters. Here’s a detailed explanation of how the gearing mechanism contributes to torque and speed control in a gear motor:

The gearing mechanism consists of multiple gears with varying sizes, tooth configurations, and arrangements. Each gear in the system engages with another gear, creating a mechanical connection. When the motor rotates, it drives the rotation of the first gear, which then transfers the motion to subsequent gears, ultimately resulting in the output shaft’s rotation.

Torque Control:

The gearing mechanism in a gear motor enables torque control through the principle of mechanical advantage. The gear system utilizes gears with different numbers of teeth, known as gear ratio, to adjust the torque output. When a smaller gear (pinion) engages with a larger gear (gear), the pinion rotates faster than the gear but exerts more force or torque. This results in torque amplification, allowing the gear motor to deliver higher torque at the output shaft while reducing the rotational speed. Conversely, if a larger gear engages with a smaller gear, torque reduction occurs, resulting in higher rotational speed at the output shaft.

By selecting the appropriate gear ratio, the gearing mechanism effectively adjusts the torque output of the gear motor to match the requirements of the application. This torque control capability is essential in applications that demand high torque for heavy lifting or overcoming resistance, as well as applications that require lower torque but higher rotational speed.

Speed Control:

The gearing mechanism also contributes to speed control in a gear motor. The gear ratio determines the relationship between the rotational speed of the input shaft (driven by the motor) and the output shaft. When a gear motor has a higher gear ratio (more teeth on the driven gear compared to the driving gear), it reduces the output speed while increasing the torque. Conversely, a lower gear ratio increases the output speed while reducing the torque.

By choosing the appropriate gear ratio, the gearing mechanism allows for precise speed control in a gear motor. This is particularly useful in applications that require specific speed ranges or variations, such as conveyor systems, robotic movements, or machinery that needs to operate at different speeds for different tasks. The speed control capability of the gearing mechanism enables the gear motor to match the desired speed requirements of the application accurately.

In summary, the gearing mechanism in a gear motor contributes to torque and speed control by utilizing different gear ratios and configurations. It enables torque amplification or reduction, depending on the gear arrangement, allowing the gear motor to deliver the required torque output. Additionally, the gear ratio also determines the relationship between the rotational speed of the input and output shafts, providing precise speed control. These torque and speed control capabilities make gear motors versatile and suitable for a wide range of applications in various industries.

China factory OEM BMW/Bk/8K Orbital Gear Motor Hydraulic Planetary Orbit Motor for Crawler Excavator/Tractor/Wheel Loader Spare Parts   vacuum pump oil	China factory OEM BMW/Bk/8K Orbital Gear Motor Hydraulic Planetary Orbit Motor for Crawler Excavator/Tractor/Wheel Loader Spare Parts   vacuum pump oil
editor by CX 2024-05-07

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