A gearbox is a mechanical device utilized to raise the output torque or change the swiftness (RPM) of a engine. The motor’s shaft is definitely mounted on one end of the gearbox and through the inner configuration of gears of a gearbox, provides a given result torque and speed dependant on the gear ratio.
Physical Properties
The physical parts of gearboxes change from one gearbox type to another, as well as differences between manufacturers. The majority of gearboxes are constructed from steel materials such as iron, aluminium and brass. Unlike other gearbox types, spur gearboxes may also be made with plastics such as polycarbonate or nylon. Apart from the raw materials utilized, the orientation of the apparatus teeth play a major role in the entire efficiency, torque and swiftness of the system. Straight gear tooth gearboxes are typically used in low-speed applications. These gearboxes can be noisy, and may have lower overall effectiveness. Helical gearboxes are usually used in high-speed applications. These gearboxes are quieter in operation than straight gear teeth gearboxes, which may improve their overall efficiency.
Types of Gearboxes
There are numerous types of gearboxes produced throughout the world. One of the main variations between person gearboxes is their overall performance characteristics. Choosing from the various gearbox types is program dependent. Gearboxes can be found in many sizes, ratios, efficiencies and backlash characteristics. Most of these design elements will affect the functionality 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 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 curved and oblique tooth and are used in applications requiring high-efficiency, high speed applications.
Physical Properties
Bevel gears are usually constructed from cast iron, light weight aluminum alloy or other metal materials but vary between manufacturers.
Note: Gears created from steel materials could be noisy when getting into contact with other gears and in addition make them prone to wear.
Applications of Bevel Gears
Bevel gearboxes use bevel gears and so are mainly used in right position applications with the shafts in a perpendicular set up.
• Print Press
• Power Plants
• Automobiles
• Steel Plants
• Hand Drills
• Differential Drives
Benefits of Bevel Gears
• Right angle configuration
• Durable
Disadvantages of Bevel Gears
• Axes must be in a position to support forces
• Poorly cut the teeth may lead to excessive vibration and noise 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 kind of innovation provides for a smooth and silent operation. Gearboxes using helical gears are applicable in high horsepower and effective applications.
Physical Properties
Helical gears are usually constructed from cast iron, aluminum allow or iron material but may vary depending on the maker.
Note: Gears created from steel materials can be noisy when coming into connection with other gears and also make them prone 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
• Could be meshed in parallel or cross orientation
• Smooth and quiet operation
• Efficient
• High horsepower
Disadvantages of Helical Gears
• Resultant thrust along axis of gear
gearbox construction Additives to lubrication
Spur Gearbox
Spur Gears
Spur gears are made with straight teeth mounted on a parallel shaft. The noise level of spur gears is usually relatively high because of colliding the teeth of the gears which will make spur gear teeth susceptible to use. Spur gears can be found in a range of sizes and gear ratios to meet applications requiring a certain speed or torque result.
Physical Properties
Spur gears are usually constructed from metals such as for example steel or brass, and plastics such as nylon or polycarbonate. The material used to construct spur gears can vary greatly depending on the manufacturer.
Note: Gears made from steel materials can be noisy when getting into contact with other gears and in addition make them susceptible to wear.
Applications of Spur Gears
Spurs gears are used in applications requiring a decrease in speed with high result 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
• Susceptible to wear
Worm Gearbox
Worm Gears
Worm gears are able to withstand high shock loads, lower in sound level and maintenance-free but are less efficient than various other gear types. Worm gears can be used in right angle configuration. The worm gearbox configuration allows the worm to carefully turn the gear with ease; however, the gear cannot switch the worm. The prevention of the gear to go the worm can be used as a braking system. When the worm gearbox is not active, it is held in a locked position.
Physical Properties