| A gearbox is the system of gears and/or the | | | | reached at by dividing the number of the |
| hydraulic system that transmit mechanical | | | | teeth of the larger wheel by the number of |
| power from a prime mover - such as an engine | | | | teeth of the smaller wheel. It is also known |
| or electric motor - to a typically rotary | | | | a right angle bevel gearbox. In bevel |
| output device at a lower angular momentum but | | | | gearboxes, 2 axles cross at a point and |
| a higher motive torque. Gearboxes have found | | | | engage by means of a pair of conical gears. |
| use in a wide variety of different - often | | | | These gears enable a change in the axes of |
| stationary - applications. Transmissions are | | | | rotation of the respective shafts, commonly |
| also used in agricultural, industrial, | | | | at 90 degrees. There are four types of bevel |
| construction, mining and vehicle equipment. | | | | gear boxes: |
| In addition to ordinary transmission equipped | | | | |
| with gears, such equipment makes extensive | | | | - Straight bevel gearboxes - They have a |
| use of the hydrostatic drive and electrical | | | | conical pitch surface and straight teeth |
| adjustable - speed drives. | | | | tapering towards an apex. |
| | | | |
| A Gearbox is also called gear head, gear | | | | - Zero bevel gear boxes - This is similar to |
| reducers or speed reducers. They are | | | | a bevel gear except the teeth are curved. In |
| available in broad range of sizes, capacities | | | | essence, zero bevel gear boxes are spiral |
| and speed ratios. Gearing arrangement for | | | | bevel gear boxes with a spiral angle of zero. |
| gearbox includes spur, helical, planetary, | | | | |
| bevel, worm, and cycloidal. | | | | - Spiral bevel gear boxes - The teeth are |
| | | | curved teeth at an angle allowing contact and |
| 90 degree gear box | | | | motion to be gradual and smooth. |
| | | | |
| A 90 degree gearbox, also known as a right | | | | - Hypoid bevel gearboxes - These are similar |
| angle gearbox, transmits torque at 90 degrees | | | | to spiral bevel except that the pitch |
| to the input shaft. It features a variety of | | | | surfaces are hyperboloids rather than cones. |
| mounting holes which enable it to be mounted | | | | Pinion can be offset above or below gear |
| easily in almost any position. | | | | center, thus allowing larger pinion diameter, |
| | | | and longer life and smoother mesh. |
| Right angle gearboxes contain input shafts | | | | |
| that are positioned perpendicular to the | | | | Wear and tear is common in gear boxes. This |
| output shafts. Right angle gear boxes have up | | | | mostly occurs as a result of contamination |
| to 98% efficiency levels and are common in | | | | and degradation of the lubricant. Therefore |
| printing presses and glass cutting equipment. | | | | the oil used should be free from |
| | | | contamination. Breathers are often used to |
| Bevel Gearbox | | | | allow airflow on the gear box. |
| | | | |
| A Bevel gear is a gear wheel with tapered | | | | As there are moving parts in gearboxes, they |
| teeth meshed with another so that their | | | | have to be well preserved. It is important to |
| shafts are at an angle of 90 degrees. They | | | | take care of gearboxes. An annual check of |
| connect intersecting axes. A bevel gear box | | | | all switches and sensors as well as cooler |
| is yet another right angle gearbox solution | | | | condition should be performed to ensure its |
| with a much higher efficiency. It has a low | | | | long life and trouble free performance. |
| ratio. The ratio of a bevel gearbox is | | | | |