Product Description
Introduction
The reversible motor has a friction brake at the back of the motor body, which is designed for application where reversal of direction is frequently required. The reversible motor is like an induction motor that started by the capacitor and has the same torque characteristic as the induction motor. But the reversible motor is designed with a higher starting torque to increase the instant reversal features.
Specification
Allowable load for the gear motor
| Motor Model | Specs | Output power | Voltage | Frequency | Current | Starting Torque | Rated Torque | Rated Speed | Capacitor/Ve |
| W | V | Hz | A | mN.m | mN.m | r/min | μF/VAC | ||
| GS4IK25GN-C GS4IK25A-C |
Induction | 25 | 1-phase 220 |
50 | 0.22 | 231 | 185 | 1250 | 1.5/450 |
| 60 | 0.21 | 192 | 154 | 1550 | 1.5/450 | ||||
| GS4RK25GN-C GS4RK25A-C |
Reversible | 50 | 0.24 | 231 | 185 | 1250 | 2/450 | ||
| 60 | 0.26 | 192 | 154 | 1550 | 2/450 | ||||
| GS4IK25GN-A GS5IK40A-A |
Induction | 25 | 1-phase 110 |
50 | 0.48 | 231 | 185 | 1250 | 6/250 |
| 60 | 0.46 | 192 | 154 | 1550 | 6/250 | ||||
| GS4RK25GN-A GS4RK25A-A |
Reversible | 50 | 0.50 | 231 | 185 | 1250 | 8/250 | ||
| 60 | 0.56 | 192 | 154 | 1550 | 8/250 | ||||
| GS4IK25GN-U GS4IK25A-U |
— | 25 | 3-phase 380 |
50 | 0.14 | 231 | 185 | 1250 | — |
| 60 | 0.12 | 192 | 154 | 1550 | — | ||||
| GS4IK25GN-S GS4IK25A-S |
— | 25 | 3-phase 220 |
50 | 0.24 | 231 | 185 | 1250 | — |
| 60 | 0.225 | 192 | 154 | 1550 | — | ||||
| GS4IK30GN-C GS4IK30A-C |
Induction | 30 | 1-phase 220 |
50 | 0.28 | 275 | 220 | 1250 | 2.2/450 |
| 60 | 0.30 | 231 | 185 | 1550 | 2.2/450 | ||||
| GS4RK30GN-C GS4RK30A-C |
Reversible | 50 | 0.30 | 275 | 220 | 1250 | 2.5/450 | ||
| 60 | 0.32 | 231 | 185 | 1550 | 2.5/450 | ||||
| GS4IK30GN-A GS5IK30A-A |
Induction | 30 | 1-phase 110 |
50 | 0.58 | 275 | 220 | 1250 | 8/250 |
| 60 | 0.60 | 231 | 185 | 1550 | 8/250 | ||||
| GS4RK30GN-A GS4RK30A-A |
Reversible | 50 | 0.60 | 275 | 220 | 1250 | 10/250 | ||
| 60 | 0.65 | 231 | 185 | 1550 | 10/250 |
Allowable load for the gear motor
| Geared-down parameter |
Synchronous speed r/min |
500 | 300 | 250 | 200 | 150 | 120 | 100 | 83 | 75 | 60 | 50 | 40 | 35 | 30 | 25 | 20 | 15 | 12 | 10 | 8 | 7 | 6 | 5 | |
| Ratio i | 3 | 5 | 6 | 7.5 | 10 | 12.5 | 15 | 18 | 20 | 25 | 30 | 36 | 40 | 50 | 60 | 75 | 100 | 120 | 150 | 180 | 200 | 250 | 300 | ||
| Max allowable load | 25W | N.m | 0.45 | 0.79 | 0.93 | 1.18 | 1.55 | 1.86 | 2.25 | 2.78 | 3.1 | 3.43 | 4.12 | 5.01 | 5.57 | 6.18 | 7.52 | 7.84 | |||||||
| 30W | N.m | 0.56 | 0.8 | 1.1 | 1.39 | 1.85 | 2.32 | 2.78 | 3.34 | 3.7 | 4.17 | 5.01 | 6.01 | 6.68 | 6.5 | 7.84 | |||||||||
Note:
Motor voltage, power, and speed will be customized according to your request under the allowed circumstance of adoptable dimension.
FOR OTHER MODELS:
Size: 60 / 70 / 80 / 90 / 100mm
Power: 6/ 10 / 15 / 20 / 25 / 30/ 40 / 60 / 90 / 120 / 140/160/ 180/ 200/ 250/ 370 W
Voltage: 1ph100 / 1ph110 / 1ph120 / 1ph220 / 1ph230 / 3ph220 /3ph380v (50/60Hz)
Gear Ratio: 3/ 5/ 6/ 7.5/10/ 12.5/ 15/ 20/ 25/ 30/ 36/ 40/ 50/ 60/ 75/ 100/ 120/ 150/ 180/ 200/ 250/ 300/ 500
Dimensional Drawing
Similar Product Pictures
Packing & Delivery
Certifications
Company Overview
Greensky Power Company Limited is a China based international company who is specialized in electric motor, gearbox and controlling system developing, manufacturing, quality controlling and trading.
Mission:We are dedicated to develop an international electric motor company who can deliver one-stop reliable products with customer-oriented service.
History:Greensky was established in 2571 by CHINAMFG Cheng in Los Angeles, USA and moved to HangZhou, China in 2011. In the past years, the team of CHINAMFG continues to create the value to our esteemed customers all over the world by building up wide and reliable supply chain management system, effective quality & delivery time control system, cost efficiency manufacturing system and fast-respond professional service.
Exhibitions
FAQ
1 Q: What’s your MOQ for AC Motor?
A: 1unit is ok for sample testing
2 Q: What about your warranty for your AC Motor?
A: One year.
3 Q: Do you provide OEM service with customer-logo?
A: Yes, we could do OEM orders, but we mainly focus on our own brand.
4 Q: How about your payment terms?
A: TT, western union, and PayPal. 100% payment in advance for orders less than $5,000. 30% deposit and balance before delivery for orders over $5,000.
5 Q: How about your packing?
A: Carton, Plywood case. If you need more, we can pack all goods in pallets.
6 Q: What information should be given, if I buy from you?
A: Rated power, gearbox ratio, input speed, mounting position. More details, better!
7 Q: How do you deliver the AC Motor?
A: We will compare and choose the most suitable ways of delivery by sea, air or express courier.
We hope you will enjoy cooperating with us. /* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Application: | Industrial |
|---|---|
| Speed: | Low Speed |
| Number of Stator: | Single-Phase |
| Function: | Driving, Control |
| Casing Protection: | Closed Type |
| Number of Poles: | 4 |
| Samples: |
US$ 100/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
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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.

Can gear motors be used for precise positioning, and if so, what features enable this?
Yes, gear motors can be used for precise positioning in various applications. The combination of gear mechanisms and motor control features enables gear motors to achieve accurate and repeatable positioning. Here’s a detailed explanation of the features that enable gear motors to be used for precise positioning:
1. Gear Reduction:
One of the key features of gear motors is their ability to provide gear reduction. Gear reduction refers to the process of reducing the output speed of the motor while increasing the torque. By using the appropriate gear ratio, gear motors can achieve finer control over the rotational movement, allowing for more precise positioning. The gear reduction mechanism enables the motor to rotate at a slower speed while maintaining higher torque, resulting in improved accuracy and control.
2. High Resolution Encoders:
Many gear motors are equipped with high-resolution encoders. An encoder is a device that measures the position and speed of the motor shaft. High-resolution encoders provide precise feedback on the motor’s rotational position, allowing for accurate position control. The encoder signals are used in conjunction with motor control algorithms to ensure precise positioning by monitoring and adjusting the motor’s movement in real-time. The use of high-resolution encoders greatly enhances the gear motor’s ability to achieve precise and repeatable positioning.
3. Closed-Loop Control:
Gear motors with closed-loop control systems offer enhanced positioning capabilities. Closed-loop control involves continuously comparing the actual motor position (as measured by the encoder) with the desired position and making adjustments to minimize any position error. The closed-loop control system uses feedback from the encoder to adjust the motor’s speed, direction, and torque, ensuring accurate positioning even in the presence of external disturbances or variations in the load. Closed-loop control enables gear motors to actively correct for position errors and maintain precise positioning over time.
4. Stepper Motors:
Stepper motors are a type of gear motor that provides excellent precision and control for positioning applications. Stepper motors operate by converting electrical pulses into incremental steps of movement. Each step corresponds to a specific angular displacement, allowing precise positioning control. Stepper motors offer high step resolution, allowing for fine position adjustments. They are commonly used in applications that require precise positioning, such as robotics, 3D printers, and CNC machines.
5. Servo Motors:
Servo motors are another type of gear motor that excels in precise positioning tasks. Servo motors combine a motor, a feedback device (such as an encoder), and a closed-loop control system. They offer high torque, high speed, and excellent positional accuracy. Servo motors are capable of dynamically adjusting their speed and torque to maintain the desired position accurately. They are widely used in applications that require precise and responsive positioning, such as industrial automation, robotics, and camera pan-tilt systems.
6. Motion Control Algorithms:
Advanced motion control algorithms play a crucial role in enabling gear motors to achieve precise positioning. These algorithms, implemented in motor control systems or dedicated motion controllers, optimize the motor’s behavior to ensure accurate positioning. They take into account factors such as acceleration, deceleration, velocity profiling, and jerk control to achieve smooth and precise movements. Motion control algorithms enhance the gear motor’s ability to start, stop, and position accurately, reducing position errors and overshoot.
By leveraging gear reduction, high-resolution encoders, closed-loop control, stepper motors, servo motors, and motion control algorithms, gear motors can be effectively used for precise positioning in various applications. These features enable gear motors to achieve accurate and repeatable positioning, making them suitable for tasks that require precise control and reliable positioning performance.

What is a gear motor, and how does it combine the functions of gears and a motor?
A gear motor is a type of motor that incorporates gears into its design to combine the functions of gears and a motor. It consists of a motor, which provides the mechanical power, and a set of gears, which transmit and modify this power to achieve specific output characteristics. Here’s a detailed explanation of what a gear motor is and how it combines the functions of gears and a motor:
A gear motor typically consists of two main components: the motor and the gear system. The motor is responsible for converting electrical energy into mechanical energy, generating rotational motion. The gear system, on the other hand, consists of multiple gears with different sizes and tooth configurations. These gears are meshed together in a specific arrangement to transmit and modify the output torque and speed of the motor.
The gears in a gear motor serve several functions:
1. Torque Amplification:
One of the primary functions of the gear system in a gear motor is to amplify the torque output of the motor. By using gears with different sizes, the input torque can be effectively multiplied or reduced. This allows the gear motor to provide higher torque at lower speeds or lower torque at higher speeds, depending on the gear arrangement. This torque amplification is beneficial in applications where high torque is required, such as in heavy machinery or vehicles.
2. Speed Reduction or Increase:
The gear system in a gear motor can also be used to reduce or increase the rotational speed of the motor output. By utilizing gears with different numbers of teeth, the gear ratio can be adjusted to achieve the desired speed output. For example, a gear motor with a higher gear ratio will output lower speed but higher torque, whereas a gear motor with a lower gear ratio will output higher speed but lower torque. This speed control capability allows for precise matching of motor output to the requirements of specific applications.
3. Directional Control:
Gears in a gear motor can be used to control the direction of rotation of the motor output shaft. By employing different combinations of gears, such as spur gears, bevel gears, or worm gears, the rotational direction can be changed. This directional control is crucial in applications where bidirectional movement is required, such as in conveyor systems or robotic arms.
4. Load Distribution:
The gear system in a gear motor helps distribute the load evenly across multiple gears, which reduces the stress on individual gears and increases the overall durability and lifespan of the motor. By sharing the load among multiple gears, the gear motor can handle higher torque applications without putting excessive strain on any particular gear. This load distribution capability is especially important in heavy-duty applications that require continuous operation under demanding conditions.
By combining the functions of gears and a motor, gear motors offer several advantages. They provide torque amplification, speed control, directional control, and load distribution capabilities, making them suitable for various applications that require precise and controlled mechanical power. Gear motors are commonly used in industries such as robotics, automotive, manufacturing, and automation, where reliable and efficient power transmission is essential.


editor by CX 2024-02-21