Notes of Precautions Before Mounting DC Gear Motor

Founded in 1995, Hennkwell Ind. Co., Ltd., the professional DC geared motor manufacturer, is specialized in research, development, manufacturing, and sales of the miniature DC gear motors.


Hennkwell Notes of Precautions Before Mounting DC Gear Motor Introduction

Hennkwell Ind. Co., Ltd. is Taiwan supplier and manufacturer in Mechanical Components Industry. Hennkwell has been offering our customers high quality Gear Motor, Geared Motor, 12V DC Gear Motor, Dc Gear Motor, 24V DC Gear Motor, DC Geared Motor, 12V DC Motor with Gear Reduction, Dc Motor with Gearbox 24V, Gear Box DC Motor, Planetary Gearbox since 1995. With both advanced technology and 20 years experience, Hennkwell always make sure to meet each customer's demand.

Notes of Precautions Before Mounting DC Gear Motor


Before using a gear motor, make sure you follow the instructions and precautions as followed.

Inappropriate installation or usage will cause the gearbox/motor to break down.


1)Please do not strike a gear or sprocket into the output shaft by hand or hammer or something similar. It can cause the shaft to be bent or damaged and shorten the bearing's life.

2)Please do not modify the shaft, please inform Hennkwell to perform this procedure.

Motor Connecting and Operation to your Application

1)If the machine where the motor is connected to, generates strong vibration or shock's. It can damaged the motor, in this case, a cushion will be required to solve this issue.

2)When using a chain or a belt, and if a stopper is installed at the area where the product stops by being against the stopper during the transmission.

Please pay extra attention to the proper adjustment of the correct degree of the shaft.It is crucial to the length of the motor's life.

3)Please make sure there is no over-loading on the shaft when using the motor, the permissible load will be advised on our dynamic test report as a guideline. It is available upon request. When mounting the shaft, when mounting your machine to the motor's shaft,please mount as close to the root of the shaft as possible.

4)Be careful so there is no excessive tightness on the chain and belt. Both too loose or too tight can cause vibration or excessive pressure that could damage the motor.

5)During installing gear motors, do not use wrenches or the other tools to adjust the designed angle or fixture of output shaft While POWER-OFF. The proper way to adjust the angles is under condition of "POWER-ON". To avoid the damage of gearbox, please ensure the motor is electrified once you intend to adjust the angles of output shaft.

6)When soldering to connect the power lead on the (+)&(-) terminals,the soldering time should be completed within 3 seconds for the purpose to avoid too much soldering leftover sticking on the metallic bottom of the motor.

(Tips: the temperature of solder head had better control between 340゚C ~ 400゚C)

7)Do not operate the motor at an higher voltage than on the label.

Gearbox Maintenance

1)Make sure there is no dust, fluid that penetrate inside the gearbox. If the motor is going to be condition,working under humid condition please kindly equip the motor with a plastic tube or cover to protect the motors.

2)Please do not overload on the gearbox, for acceptable range of loading,please refer to our dynamic test report, which is available upon request.

3)To avoid the damage of gearbox or break the driving shaft, please do not perform any machining such drilling,cutting and broaching on the shaft or any other parts without consulting Hennkwell.

Motor Usage and Maintenance

1)Do not decompose the motor parts, the characteristics will change.

2)When the brush of the motor has been worn out, the insulation resistance will be reduced.Therefore please measure it regularly.

3)Please make sure the screws or bolt being used to mount the motor has enough depth,otherwise the vibration will damage the motor.

4)Please do not attempt to change the running direction (polarity) while the motor is rotating, please turn-off the power, make sure the motor stopped completely at least 5 seconds, and then change the running direction.(CW/CCW)

5)If working under a application with unstable current supply and high temperature, please add an over-heat protector or a over-current protector to protect the motor.

6)When the motor is working under a supply current or supply voltage that is under therecommended value,it will decrease the torque and speed. In another words, if the motor works at the current or voltage above the recommended value, it might damage the motor. Please operate the motor at its recommended supply current and voltage.

Other cautions

Please ensure that to further improve our products, specifications, the method of use of our products and so on described in this catalogue may be change without any notice.

Download dependent files

Related Products
  • Dia. 22mm DC Planetary Gear Motor - dia.22mm brushed motor with gearbox
    Dia. 22mm DC Planetary Gear Motor
    PK22 Series

    We manufacture and supply dia. 22mm dc gearmotors with supply voltage from 6VDC to 24VDC and output speed range 1rpm to 1000rpm to fit your applications such as medical device, bank equipment, medical instruments, robot kits, automatic blinds, robotics, safety equipments, electric locks, communication equipments, traffic machines, household automatic equipments, business equipments, power tools, vending machines, ticket dispenser, electric valves and small actuators. Our Φ22mm series dc planetary gear motor can also be assembled with magnetic encoder.

  • Dia. 32mm Gearbox Motor - 32mm high toque low rpm brushed motor with reduction gear
    Dia. 32mm Gearbox Motor
    PK32 Series

    According to customer diversity dc gear motor requirements, Hennkwell PK32 series offer several cored brush motor types for evaluation. Dia. 32mm series have standard dia. 6mm and dia.8mm D-cut output shaft for choice. We can adjust our dc tubular motor speed and gear ratio to meet with your need. We also produce 12PPR magnetic encoder to assemble with our Φ32 series dc generator motor.

  • Dia. 38mm DC Reduction Motor - Mechanical drive powerful long life electric 12v dc geared motor
    Dia. 38mm DC Reduction Motor
    PK38 Series

    Our dia.38mm dc gearmotor can combine various spec. motors with a wide of range reduction gearboxes to obtain your required output speed and torque. Lead wires, magnetic encoder and custom-made output shaft are also available.

  • 42.5mm DC Brushed Motor With Gearhead - 42.5mm high toque brushed gear motor
    42.5mm DC Brushed Motor With Gearhead
    PK43 Series

    Hennkwell PK43 series brush gearmotor is suitable for using a short time/ intermittent and low speed operation with high torque devices such as mechanical equipment, small automation machine, ice breaker, household appliance, business machine, and other electric equipments. Its square size gearbox feature to easy install.

  • Dia. 22mm DC Coreless Planetary Gear Motor - Size 22mm coreless brushed motor with gearbox
    Dia. 22mm DC Coreless Planetary Gear Motor
    22mm coreless Series

    Hennkwell DC coreless motors are available in 22mm diameter can assemble with our dia.22mm planetary gearbox or encoder to meet most application requirements. Its quick response, higher efficiency, no cogging, low inertia, low noise & vibration, longer life features are perfected choice for medical device, small pumps, document handing/dispending equipment, banking and office automation, robotics, security and access and other products.

  • BLDC Gear Motor - Size 38mm DC brushless motor with gearbox
    BLDC Gear Motor
    PK38VCL Series

    Hennkwell DC brushless motors are available in 38mm diameter with our diameter 38mm planetary gearbox to increase torque and lower output speed for a wide range of applications. Brushless DC gear motor features with long life span operation, the speed signal output for constant speed control, high torque output, low EMI.Typical applications are medical equipment, robotics, automatic controls, pumps and office equipment and so on.