GEAR BOXES

Hi Friends

last time i posted about gears. now lets understand what are gear boxes.

Lets take an example { fig 3 the lower fig. }

The torque produced by the car's engine is not applied to the road directly; first, it is passed through a set of gears in order to optimise the engine speed for the road speed. The effect of the gearing is to change the number of times the engine rotates for each rotation of the road wheel. In addition to the gearbox itself, the differential (or `final drive') may alter the gear ratio as well as dividing the torque between the two front wheels.

Now there gear boxes can be of various types according to their need at a particular place.

1. RIGHT ANGLE WORM GEAR BOX {FIG 1}

{ extreme left fig on top}

The AGNEE Worm Gear Boxes have Cast Iron Gear Case of streamlined design completely air tight, dust proof and capable of being installed in open without any cover. The Worm Shaft is made of Alloy Steel, duly hardened and tempered. The Worm Wheel is made of Chill Cast Phosphorous Bronze and teeth accurately Generated on Gear Hobbing Machines. They are supported on Extra Heavy Duty Taper Roller anti friction Bearings of ample margin of safety to allow adequate journals as well as thrust loads. Lubrication is effected by splash of oil from the sump. Thus, no special care is required except for occasional oil topping to the required level. Air cooling is effected by means of standard polypropylene or metal fans.

2.HELICAL GEAR BOX {FIG .3}
{extreme right fig. on top}

Helical gear boxes are spiral gear boxes used in applications involving high shock loads. Helical gear boxes may require a larger initial investment, but maintain high efficiency.