A gearbox is a mechanical gadget utilized to raise the output torque or modify the speed (RPM) of a motor. 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 output torque and speed gearbox construction 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. Most gearboxes are constructed from steel components such as iron, light weight aluminum and brass. Unlike other gearbox types, spur gearboxes can also be made with plastics such as for example polycarbonate or nylon. Other than the raw materials utilized, the orientation of the apparatus teeth play a major role in the overall efficiency, torque and quickness of the system. Straight gear teeth gearboxes are typically found in low-velocity applications. These gearboxes can be noisy, and may have lower overall efficiency. Helical gearboxes are usually used in high-quickness applications. These gearboxes are quieter in operation than straight gear tooth gearboxes, which may enhance their overall efficiency.
Types of Gearboxes
There are numerous types of gearboxes produced throughout the world. One of the main distinctions between individual gearboxes is their overall performance characteristics. Choosing from the various gearbox types is app dependent. Gearboxes are available in many sizes, ratios, efficiencies and backlash characteristics. All of these design elements will affect the overall performance and price of the gearbox. There are many types of gearboxes which are the following:
Bevel Gearbox
Bevel Gears
There are two types of bevel gearboxes such as either straight or spiral teeth gears. Straight bevel gears have directly and tapered tooth and are found in applications requiring slow speeds. Spiral bevel gears have got curved and oblique tooth and are found in applications requiring high-overall performance, high speed applications.
Physical Properties
Bevel gears are usually constructed from cast iron, light weight aluminum alloy or other steel materials but vary between manufacturers.
Note: Gears made from steel materials can be noisy when coming into connection with other gears and also make them susceptible to wear.
Applications of Bevel Gears
Bevel gearboxes use bevel gears and so 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
Advantages of Bevel Gears
• Right angle configuration
• Durable
Disadvantages of Bevel Gears
• Axes should be able 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 one of the helical gear teeth. This type of innovation provides for a smooth and calm procedure. Gearboxes using helical gears are applicable in high horsepower and efficient applications.
Physical Properties
Helical gears are typically made of cast iron, aluminum allow or iron material but can vary greatly depending on the manufacturer.
Note: Gears made from steel materials can be noisy when coming into contact with other gears and also 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
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 tooth mounted on a parallel shaft. The noise degree of spur gears is definitely relatively high because of colliding the teeth of the gears which will make spur gear teeth prone to wear. Spur gears come in a variety of sizes and equipment ratios to meet applications requiring a certain speed or torque output.
Physical Properties
Spur gears are usually constructed from metals such as steel or brass, and plastics such as for example 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 getting into connection with other gears and also make them prone to wear.
Applications of Spur Gears
Spurs gears are used in applications requiring a decrease 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
• Susceptible to wear
Worm Gearbox
Worm Gears
Worm gears have the ability to withstand high shock loads, lower in sound level and maintenance-free but are less efficient than other gear types. Worm gears can be utilized in right position configuration. The worm gearbox configuration enables the worm to carefully turn the gear easily; however, the apparatus cannot convert the worm. The prevention of the gear to move the worm can be utilized as a braking system. When the worm gearbox is not active, it is in a locked position.
Physical Properties