What is a Gearmotor?
A small motor (ac induction, permanent magnet dc, or brushless dc) designed specifically with an integral (not separable) gear reducer (gearhead). The end shield on the drive end of the motor is designed to provide a dual function. The side facing the motor provides the armature/rotor bearing support and a sealing provision through which the integral rotor or armature shaft pinion passes. The other side of the end shield provides multiple bearing supports for the gearing itself, and a sealing and fastening provision for the gearhousing. This construction provides many benefits for a user and eliminates the guesswork of sizing a motor and gear reducer on your own.
The following recommend you GW370 Worm Gear Motor
DC 12V High Torque Turbo Worm Gear Motor GW370 Reducer Motor
The motor is dc worm gear motor with micro-turbine worm, you can change the wiring-connection to change motor rotation.Turbo worm geared motor with self-lock, that is, in the case of motor without electric, the output axis is fixed, self-lock.The reducer output shaft arranged vertically with the motor shaft, whole motor output shaft relatively-short than general gear motor, widely used to be installed the dimensions requirements strictly occasion.
Application: open the window, door, Mini winch. ect.
- Using the right sized motor and gearhead combination for an application helps to prolong Gear reduction motors life and allows for optimum power management and power utilization. Traditionally, design engineers oversized motors and gearheads to add “safety factors” — Bodine “factory matched” gearmotors consistently deliver rated performance.
- Quieter operation due to integral castings and integral pinion, ground or hobbed on the armature or rotor shaft. Fewer parts requiring assembly resulting in “near perfect” alignment of the rotor, pinion and geartrain.
- Minimum risk of lubricant leakage, because of “O-ring” and lip seal construction. The design can be more compact and the lubrication can be controlled better (for various mounting configurations).
- Gearmotors eliminate the need for motor/gearhead couplings and eliminate any potential bearing alignment problems, common when a motor and gearhead are bolted together by an end-user (separable gearheads). Misalignment can result in bearing failure due to fretting corrosion.
- Separable motor and gearhead solutions make more sense in larger integral horsepower (>1 HP) applications. For example, when a 100-pound motor is mounted to a 500-pound gearhead.
Gears for speed reduction
Gears are common in most motors and machines because they increase torque output through gear reduction and adjust the direction of rotation. However, there are different types of gears that can be integrated on machines to change its motor speed.
- Worm gears – are cost effective speed reducers with a setup designed so that the worm can change into a gear although the gear cannot change into a worm. Worm gear motors set new standards for reliability, cost effectiveness and efficiency with hollow shafts in the smallest sizes. The angles of the worm are shallow so that the gear is held in place due to friction. The most common application of worm gear motors can be found on conveyor systems where the locking feature can act as a brake or an emergency stop.
- Spur gears – similar to worm gear motors, this type of speed reducer is typically used for large speed reductions. Spur gears have straight teeth that are mounted in parallel on different shafts. The most common applications of spur gears can be found on washing machines, screwdrivers and windup alarm clocks. The most obvious drawback of spur gears is the noise that they produce when the gear tooth engages and collides.
- Helical gears – compared to spur gears, helical gears operate quietly and smoothly because of the way the teeth interact. The teeth of the helical gear are cut at an angle to the face of the gear and when they start to engage, the contact is gradual. Contact starts at one end of the tooth and is maintained as the gear rotates into full engagement. The most common application of helical gears can be found in transmissions.
- Bevel gears – have teeth that are available in straight, spiral or hypoid shapes to change the direction of shaft rotation. Straight teeth have the same characteristics as the spur gears while spiral teeth operate in the same way as helical gears. Compared to straight teeth, spiral teeth produce less vibrations and noise. Bevel gears with the hypoid design have a shape that looks like a revolved hyperboloid instead of a conical shape.