A gearbox is a mechanical gadget utilized to raise the output torque or alter the quickness (RPM) of a motor. The motor’s shaft is mounted on one end of the gearbox and through the internal configuration of gears of a gearbox, provides a given output torque and speed determined by the gear ratio.
Physical Properties
The physical components of gearboxes vary from one gearbox type to some other, as well as variations between manufacturers. Many gearboxes are constructed from steel components such as iron, aluminum and brass. Unlike various other gearbox types, spur gearboxes may also be produced with plastics such as polycarbonate or nylon. Apart from the raw materials used, the orientation of the gear teeth play a major role in the overall efficiency, torque and velocity of the system. Straight gear the teeth gearboxes are typically used in low-velocity applications. These gearboxes can be noisy, and may have lower overall performance. Helical gearboxes are usually used in high-rate applications. These gearboxes are quieter in operation than straight gear teeth 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 person gearboxes is their performance features. Choosing from the various gearbox types is app dependent. Gearboxes can be found in many sizes, ratios, efficiencies and backlash characteristics. All of these design factors 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 directly or spiral teeth gears. Straight bevel gears have directly and tapered tooth and are used in applications gearbox construction requiring slow speeds. Spiral bevel gears have got curved and oblique teeth and are used in applications needing high-performance, high speed applications.
Physical Properties
Bevel gears are typically constructed from cast iron, aluminum alloy or other metal components but vary between manufacturers.
Note: Gears created from steel materials could 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 are mainly used in right angle 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 must be in a position to support forces
• Poorly cut teeth may lead to excessive vibration and sound 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 provides for a smooth and calm procedure. Gearboxes using helical gears can be applied in high horsepower and efficient applications.
Physical Properties
Helical gears are usually constructed from cast iron, aluminum allow or iron materials but may vary depending on the manufacturer.
Note: Gears created from steel materials could be noisy when getting into contact with other gears and also make them prone 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 teeth mounted on a parallel shaft. The noise degree of spur gears is relatively high because of colliding teeth of the gears which make spur gear teeth prone to wear. Spur gears can be found in a range of sizes and equipment ratios to meet up applications requiring a particular 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 materials used to construct spur gears may vary depending on the manufacturer.
Note: Gears created from steel materials can be noisy when getting into contact with other gears and also make them susceptible 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
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-totally free but are less efficient than various other gear types. Worm gears can be utilized in right position configuration. The worm gearbox configuration enables the worm to turn the gear with ease; however, the gear cannot convert the worm. Preventing the gear to move the worm can be used as a braking system. When the worm gearbox isn’t active, it is held in a locked position.
Physical Properties