China best G Series Gear Speed Reducers 220V/380V 100W–5500W Geared Motor a/c vacuum pump

Product Description

Product Description

  Model selection

1.Installation method: Horizontal ( foot) installation, Vertical ( flange) installation

2.Requirement for the output shaft of motor: 18,22,28,32,40,50mm

3.Power requirement: 100W, 200W….3700W

4.Speed of the motor you need

5.Ratio: Motor input speed/output speed. Or advise your required output speed. We have 3,5,10…1800

6.Voltage: Three phase 220V/380V 50/60Hz; Single phase 110, 220V 50/60Hz

7.Additional parts:DC 90V brake unit; Hand release brake unit; DC 24V brake unit, 110V forced draft fan; 220V forced draft fan.

8.Position of terminal box: view from output shaft

9.Wire inlet direction



Features of AC Gear motor

1.Small size, light weight, knot no noise, compact, maintenance-free 

2.High tightness. Geared motor output section has the configuration of seals and O-ring to avoid grease refluxing and damage of insulation aging .

 3.High efficiency. The gear motor products using the new silicon steel stamping die design, high precision core, strong magnetic properties, geared motor cooling structure using the new shape .

4.Optimal design, the ST ( speed – torque ) features optimized so that gear motors can work for a variety of operating environments.

5.Customized, our company has developed its own design team, geared motors can be customized according to the customer ‘s specific needs specifications.


Various industrial production lines, coveyor machinery, food machinery, medical machinery, printing machinery, office facility, instrument, automatic mahjong machine

1/8hp-100w 1/4hp-200w 1/2hp-400w 1hp-750w 2hp-1.5kw 3hp-2.2kw 5hp-3.7kw
Type Indicated
Type  Indicated
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18 5 4.58 18 5 6.82 22 5 5.218 28 5 5.745 32 5 5.01 32 5 5.01 40 5 5.1
10 10 10 10.3 10 9.97 10 11.157 10 10.08 10 10.08 10 9.87
15 15.1 15 16.67 15 13.73 15 16.157 15 16.2 40 15 17.03 15 17.03
20 19.9 20 21 20 20.01 20 19.942 20 19.6 20 21.33 20 21.33
25 24.44 25 28.3 25 25.04 25 24.704 25 25.07 25 24.19 50 25 24.88
30 30.8 22 15 15.46 28 15 14.75 32 30 31.09 40 30 30.44 30 30.44 30 29.85
40 41.25 20 20.34 20 21.16 35 35.82 40 42.79 40 37.52 35 36.05
50 48.19 25 25.09 25 26.11 40 41.28 50 52.52 50 52.52 40 40.67
22 60   30 28.18 30 29.33 50 51.06 60 58.54 60 58.54 45 46.33
70   35 36.66 40 41.11 60 57.6 70 72.16 50 70 68.63 50 49.63
95   40 42.72 55 46.3 70 70.9 80 81.06 80 82.95 60 59.56
105   50 50.23 50 50.35 80 78 90 91.93 90 90.67 70 69.69
120   65 66.12 55 56.28 90 92.57 105 104.83 100 99.55 80 81.89
130   75 73.2 65 63.38 100 101.23 50 110 109.93 110 109.93      
170   80 81.55 75 72.27 110 112.01 120 121.31 120 121.31      
200   90 91.57 80 80.77 125 124.49 125 125.18 140 137.24      
      18 100 100.38 90 89.2 130 128.68 140 137.24 160 155.91      
      110 112.16 100 100.2 140 139.85 155 155.91 180 1766.38      
      125 125.99     150 147.73 180 176.38            
      140 141.9     160 159.46                  
      165 164.05 32 100 101.1 180 180.86                  
      185 184.77 110 108.44 40 125 125.23                  
            120 119.98 135 133.76                  
            130 131.21 150 150.46                  
            145 145.69 160 160.7                  
            150 149.98 180 179.97                  
            160 161.2 200 216.22                  
            180 181.48                        
            200 201.5                        

Detailed Photos

Our Advantages

We have more than 30years on all kinds of ac motors and gearmotor ,worm reducers producing ,nice price 
What we do:
1.Stamping of lamination
2.Rotor die-casting
3.Winding and inserting – both manual and semi-automatically
4.Vacuum varnishing
5.Machining shaft, housing, end shields, etc…
6.Rotor balancing
7.Painting – both wet paint and powder coating
10.Inspecting spare parts every processing
11.100% test after each process and final test before packing.,


Q: Do you offer OEM service?
A: Yes
Q: What is your payment term?
A: 30% T/T in advance, 70% balance when receiving B/L copy. Or irrevocable L/C.
Q: What is your lead time?
A: About 30 days after receiving deposit or original L/C.
Q: What certifiicates do you have?
A: We have CE, ISO. And we can apply for specific certificate for different country such as SONCAP for Nigeria, COI for Iran, SASO for Saudi Arabia, etc

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Application: Motor, Machinery, Agricultural Machinery
Hardness: Hardened Tooth Surface
Installation: Horizontal Type
Layout: Helical
Gear Shape: Helical
Step: Three-Step
US$ 50/Piece
1 Piece(Min.Order)




gear motor

How is the efficiency of a gear motor measured, and what factors can affect it?

The efficiency of a gear motor is a measure of how effectively it converts electrical input power into mechanical output power. It indicates the motor’s ability to minimize losses and maximize its energy conversion efficiency. The efficiency of a gear motor is typically measured using specific methods, and several factors can influence it. Here’s a detailed explanation:

Measuring Efficiency:

The efficiency of a gear motor is commonly measured by comparing the mechanical output power (Pout) to the electrical input power (Pin). The formula to calculate efficiency is:

Efficiency = (Pout / Pin) * 100%

The mechanical output power can be determined by measuring the torque (T) produced by the motor and the rotational speed (ω) at which it operates. The formula for mechanical power is:

Pout = T * ω

The electrical input power can be measured by monitoring the current (I) and voltage (V) supplied to the motor. The formula for electrical power is:

Pin = V * I

By substituting these values into the efficiency formula, the efficiency of the gear motor can be calculated as a percentage.

Factors Affecting Efficiency:

Several factors can influence the efficiency of a gear motor. Here are some notable factors:

  • Friction and Mechanical Losses: Friction between moving parts, such as gears and bearings, can result in mechanical losses and reduce the overall efficiency of the gear motor. Minimizing friction through proper lubrication, high-quality components, and efficient design can help improve efficiency.
  • Gearing Efficiency: The design and quality of the gears used in the gear motor can impact its efficiency. Gear trains can introduce mechanical losses due to gear meshing, misalignment, or backlash. Using well-designed gears with proper tooth profiles and minimizing gear train losses can improve efficiency.
  • Motor Type and Construction: Different types of motors (e.g., brushed DC, brushless DC, AC induction) have varying efficiency characteristics. Motor construction, such as the quality of magnetic materials, winding resistance, and rotor design, can also affect efficiency. Choosing motors with higher efficiency ratings can improve overall gear motor efficiency.
  • Electrical Losses: Electrical losses, such as resistive losses in motor windings or in the motor drive circuitry, can reduce efficiency. Minimizing resistance, optimizing motor drive electronics, and using efficient control algorithms can help mitigate electrical losses.
  • Load Conditions: The operating conditions and load characteristics placed on the gear motor can impact its efficiency. Heavy loads, high speeds, or frequent acceleration and deceleration can increase losses and reduce efficiency. Matching the gear motor’s specifications to the application requirements and optimizing load conditions can improve efficiency.
  • Temperature: Elevated temperatures can significantly affect the efficiency of a gear motor. Excessive heat can increase resistive losses, reduce lubrication effectiveness, and affect the magnetic properties of motor components. Proper cooling and thermal management techniques are essential to maintain optimal efficiency.

By considering these factors and implementing measures to minimize losses and optimize performance, the efficiency of a gear motor can be enhanced. Manufacturers often provide efficiency specifications for gear motors, allowing users to select motors that best meet their efficiency requirements for specific 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 best G Series Gear Speed Reducers 220V/380V 100W--5500W Geared Motor   a/c vacuum pump		China best G Series Gear Speed Reducers 220V/380V 100W--5500W Geared Motor   a/c vacuum pump
editor by CX 2024-04-25