What is hub reduction?

The hub reduction consists of a cylindrical planetary gear with straight needle bearing gears, which gives small loss-es. The sun gear is mounted on the driveshaft and the driving power is transferred from it to the four planetary gears that are connected to the wheel hub.

What is a single reduction axle?

Single reduction axle has only one speed reducer to control the speed, while double reduction axle has a major speed reducer and a side speed reducing system. Double reduction axle resolve this conflict perfectly by installing a speed reducing gear between the axle shaft and the wheel.

What is the advantage of hub reduction?

This gives two advantages: ground clearance is increased, particularly beneath the low-slung differential housing of the main axles — and secondly, any hub reduction gearing allows the axle halfshafts to drive the same power but at reduced torque (by using higher shaft speed).

Why do manufacturers use hub reduction units?

Hub reduction gears reduce loads on the driveline. Wheel bearings in the form of maintenance-free unit bearings give longer life and easier servicing. Three reliable diff locks give high vehicle availability. High ground clearance.

What is a Scania hub reduction?

Scania offers a range of single reduction drive axles. Hub reduction is also available in two strengths. The R753 is a robust single gear with a ratio of 2.35 to keep the engine revs low at high cruising speed. High-cruising speed at low engine revs means short journey times and low fuel consumption.

What is single reduction?

Single Reduction gear This arrangement consists of only one one pair of gears. The reduction gear box consists of ports through which the propeller shaft and engine shaft enters the assembly. A small gear known as a pinion is driven by the incoming engine shaft.

What is a double reduction axle?

A 2 speed axle has 2 different gear ratios you can choose from with a selector switch. A double reduction is just that, a ‘double reduction’. It has essentially 2 gear reductions between the input and the output. This method only has one over all ratio though, between the input and the output.

What is the benefit of portal axles?

Portal axles can help increase the off-road capability of a vehicle because they maintain the manufacturers original suspension geometry. This means you can get significant lift while maintaining close to the handling of a stock vehicle.

What is axle unlock?

In the AXLE UNLOCK position, the front and rear axles are unlocked. In the REAR LOCK position, the rear axle is locked. In the FRONT/REAR LOCK position, the front and rear axles are locked.

What makes a hub reduction axle hub reduction?

A hub reduction axle, as has been explained well in earlier responses, is additional gear reduction at each wheel hub of an axle – hence, “hub reduction”.

What’s the difference between single reduction axle and double reduction axle?

Single reduction axle has only one speed reducer to control the speed, while double reduction axle has a major speed reducer and a side speed reducing system. But how should we select regarding the difference between the two?

When do you use a double reduction gear?

Double reduction gears are generally used in applications involving very high speeds. In this arrangement the pinion is connected to the input shaft using a flexible coupling. The pinion is connected to an intermediate gear known as the first reduction gear.

How is the ratio of speed reduction related?

In this type of arrangement, the ratio of speed reduction is proportional to the diameter of the pinion and the gear. For example, in a 2 to 1 single reduction gear, the diameter of the driven gear is twice that of the driving pinion; and in a 10 to 1 single reduction gear, the diameter of the driven gear is ten times that of the driving pinion.