A gearbox is a mechanical device utilized to increase the output torque or change the acceleration (RPM) of a electric motor. The motor’s shaft is attached to one end of the gearbox and through the internal configuration of gears of a gearbox, offers a given result torque and speed determined by the gear ratio.
Physical Properties
The physical components of gearboxes change from one gearbox type to some other, as well as variations between manufacturers. The majority of gearboxes are constructed from steel components such as iron, light weight aluminum and brass. Unlike various other gearbox types, spur gearboxes may also be produced with plastics such as for example polycarbonate or nylon. Apart from the raw materials utilized, the orientation of the gear teeth play a significant role in the entire efficiency, torque and quickness of the machine. Straight gear the teeth gearboxes are typically found in low-velocity applications. These gearboxes could be noisy, and may have lower overall efficiency. Helical gearboxes are usually used in high-swiftness applications. These gearboxes are quieter in operation than straight gear the teeth gearboxes, which may enhance their overall efficiency.
Types of Gearboxes
There are many types of gearboxes manufactured throughout the world. Among the main distinctions between person gearboxes is their efficiency characteristics. Choosing from the various gearbox types is program dependent. Gearboxes are available in many sizes, ratios, efficiencies and backlash characteristics. All of these design factors will affect the efficiency and price of the gearbox. There are several types of gearboxes which are the following:
Bevel Gearbox
Bevel Gears
There are two types of bevel gearboxes such as either directly or spiral teeth gears. Straight bevel gears have straight and tapered tooth and are used in applications requiring sluggish speeds. Spiral bevel gears possess curved and oblique tooth and are found in applications needing high-functionality, high speed applications.
Physical Properties
Bevel gears are typically constructed from cast iron, aluminium alloy or other steel components but vary between manufacturers.
Note: Gears created from steel materials can be noisy when coming into connection with other gears and in addition make them susceptible to wear.
Applications of Bevel Gears
Bevel gearboxes use bevel gears and are mainly used in right angle applications with the shafts in a perpendicular arrangement.
• Print Press
• Power Plants
• Automobiles
• Steel Plants
• Hand Drills
• Differential Drives
Benefits of Bevel Gears
• Right angle configuration
• Durable
Disadvantages of Bevel Gears
• Axes should be in a position to support forces
• Poorly cut tooth may result in excessive vibration and sound during operation
Helical Gearbox
Helical Gears
Helical gears are cut at angles which allow for gradual contact between each of the helical gear teeth. This type of innovation provides for a smooth and peaceful operation. Gearboxes using helical gears can be applied in high horsepower and efficient applications.
Physical Properties
Helical gears are typically constructed from cast iron, aluminum allow or iron material but may vary depending on the manufacturer.
Note: Gears made from steel materials could be noisy when coming into contact with other gears and in addition make them susceptible to wear.
Applications of Helical Gears
Helical gears are widely used in applications which require efficiency and high horsepower.
• Oil Industry
• Blowers
• Food and Labeling
• Cutters
• Elevators
Benefits of Helical Gears
• Could be gearbox construction meshed in parallel or cross orientation
• Smooth and quiet operation
• Efficient
• High horsepower
Disadvantages of Helical Gears
• Resultant thrust along axis of gear
• Additives to lubrication
Spur Gearbox
Spur Gears
Spur gears are made with straight the teeth mounted on a parallel shaft. The noise level of spur gears is certainly relatively high because of colliding tooth of the gears which make spur gear teeth prone to wear. Spur gears come in a range of sizes and equipment ratios to meet applications requiring a particular speed or torque result.
Physical Properties
Spur gears are usually constructed from metals such as for example metal or brass, and plastics such as nylon or polycarbonate. The materials used to create spur gears can vary greatly depending on the manufacturer.
Note: Gears created from steel materials could be noisy when getting into contact with other gears and in addition make them susceptible to wear.
Applications of Spur Gears
Spurs gears are found in applications requiring a reduction in speed with high output torque.
• Cut-to-Length
• Packaging
• Speed Control
• Construction
• Power Plants
Advantages of Spur Gears
• Cost-effective
• High gear ratios
• Compact
• High torque output
Disadvantages of Spur Gears
• Noisy
• Prone to wear
Worm Gearbox
Worm Gears
Worm gears can withstand high shock loads, lower in noise level and maintenance-free but are less efficient than other equipment types. Worm gears can be used in right angle configuration. The worm gearbox configuration allows the worm to turn the gear with ease; however, the gear cannot convert the worm. The prevention of the gear to go the worm can be utilized as a braking system. When the worm gearbox is not active, it is in a locked position.
Physical Properties