A gearbox is a mechanical gadget utilized to boost the result torque or modify the quickness (RPM) of a electric motor. The motor’s shaft is mounted on 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 elements of gearboxes change from one gearbox type to another, as well as distinctions between manufacturers. Many gearboxes are constructed from steel materials such as iron, light weight aluminum and brass. Unlike other gearbox types, spur gearboxes may also be produced with plastics such as polycarbonate or nylon. Other than the raw materials used, the orientation of the gear teeth play a major role in the overall efficiency, torque and rate of the machine. Straight gear teeth gearboxes are typically found in low-speed applications. These gearboxes could be noisy, and may have lower overall performance. Helical gearboxes are typically used in high-speed applications. These gearboxes are quieter in operation than straight gear tooth gearboxes, which may improve their overall efficiency.
Types of Gearboxes
There are several 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 software 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 many types of gearboxes which are listed below:
Bevel Gearbox
Bevel Gears
There are two types of bevel gearboxes which include either straight or spiral teeth gears. Straight bevel gears have straight and tapered the teeth and are found in applications requiring slow speeds. Spiral bevel gears possess curved and oblique the teeth and are found in applications requiring high-performance, high speed applications.
Physical Properties
Bevel gears are typically made of cast iron, aluminium alloy or other metal components but vary between producers.
Note: Gears made from steel materials could be noisy when coming into contact with other gears and in addition make them prone to wear.
Applications of Bevel Gears
Bevel gearboxes use bevel gears and 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
Advantages of Bevel Gears
• Right angle configuration
• Durable
Disadvantages of Bevel Gears
• Axes should be in a position to support forces
gearbox construction Poorly cut tooth 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 of the helical gear teeth. This type of innovation provides for a smooth and quiet procedure. Gearboxes using helical gears are applicable in high horsepower and efficient applications.
Physical Properties
Helical gears are usually constructed from cast iron, aluminum allow or iron materials but can vary greatly depending on the maker.
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 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
• 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 tooth mounted on a parallel shaft. The noise degree of spur gears is certainly relatively high due to colliding the teeth of the gears which make spur gear teeth prone to put on. Spur gears come in a range of sizes and gear ratios to meet applications requiring a certain speed or torque result.
Physical Properties
Spur gears are typically 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 created from steel materials could be noisy when coming into contact with other gears and in addition make them prone to wear.
Applications of Spur Gears
Spurs gears are used in applications requiring a reduction 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
• Prone to wear
Worm Gearbox
Worm Gears
Worm gears are able to withstand high shock loads, lower in noise level and maintenance-totally free but are less efficient than other gear types. Worm gears can be used in right angle configuration. The worm gearbox configuration allows the worm to turn the gear easily; however, the gear cannot change 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