A gearbox is a mechanical device utilized to boost the output torque or modify the rate (RPM) of a electric motor. The motor’s shaft is usually attached to one end of the gearbox and through the inner configuration of gears of a gearbox, provides a given output torque and speed determined by the gear ratio.
Physical Properties
The physical elements of gearboxes vary from one gearbox type to some other, as well as distinctions between manufacturers. The majority of gearboxes are constructed from steel components such as iron, aluminium and brass. Unlike additional gearbox types, spur gearboxes may also be produced with plastics such as for example polycarbonate or nylon. Other than the raw materials used, the orientation of the gear teeth play a significant role in the entire efficiency, torque and velocity of the machine. Straight gear teeth gearboxes are typically found in low-velocity applications. These gearboxes could be noisy, and could have lower overall effectiveness. Helical gearboxes are typically used in high-rate applications. These gearboxes are quieter in procedure than straight gear tooth gearboxes, which may improve their overall efficiency.
Types of Gearboxes
There are various types of gearboxes produced throughout the world. One of the main differences between individual gearboxes is their efficiency features. Choosing from the many gearbox types is application gearbox construction dependent. Gearboxes are available in many sizes, ratios, efficiencies and backlash characteristics. Most of these design factors will affect the functionality and cost of the gearbox. There are many types of gearboxes which are the following:
Bevel Gearbox
Bevel Gears
There are two types of bevel gearboxes which include either straight or spiral teeth gears. Straight bevel gears have directly and tapered the teeth and are found in applications requiring slower speeds. Spiral bevel gears have got curved and oblique tooth and are used in applications needing high-performance, high speed applications.
Physical Properties
Bevel gears are usually constructed from cast iron, light weight aluminum alloy or other metal components but vary between producers.
Note: Gears made from steel materials could 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 so are mainly utilized in right position 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 teeth may lead to excessive vibration and noise during operation
Helical Gearbox
Helical Gears
Helical gears are cut at angles which enable gradual contact between each one of the helical gear teeth. This type of innovation offers a smooth and peaceful procedure. Gearboxes using helical gears are applicable in high horsepower and effective applications.
Physical Properties
Helical gears are usually made of cast iron, aluminum allow or iron material but can vary greatly depending on the manufacturer.
Note: Gears created from steel materials can be noisy when coming into contact with other gears and in addition make them susceptible to wear.
Applications of Helical Gears
Helical gears are trusted in applications which require efficiency and high horsepower.
• Oil Industry
• Blowers
• Food and Labeling
• Cutters
• Elevators
Advantages of Helical Gears
• Can be 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 created with straight the teeth mounted on a parallel shaft. The noise degree of spur gears is relatively high due to colliding the teeth of the gears which make spur gear teeth susceptible to put on. Spur gears come in a variety of sizes and gear ratios to meet applications requiring a certain speed or torque output.
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 made from steel materials could be noisy when coming into connection with other gears and in addition make them prone 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
Benefits 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, low in sound level and maintenance-free but are less efficient than various other equipment types. Worm gears can be used in right position configuration. The worm gearbox configuration enables the worm to turn the gear easily; however, the gear cannot convert the worm. Preventing the gear to move the worm can be utilized as a braking system. When the worm gearbox isn’t active, it is held in a locked position.
Physical Properties