2013-11-22 ENG Version 05 Rear axle RTS2370A Fact Sheet The RTS2370A is a tandem axle with single reduction, hypoid gears, designed for an engine torque of 3550 Nm. The maximum axle weight and combined vehicle weight are 23 and 70 tonnes respectively. The RTS2370A is a tandem axle consisting of two, single reduction hypoid gears, and a transfer gear located in the forward axle. The rear axle casings are cast in nodular iron, which results in a compact design and high ground clear- ance. This rear axle combination is intended for heavy and demanding types of transport in both good and difficult road conditions. Drive from two axles provides very high driving force since the total axle weight is high. This results in excellent tractive force and low tyre wear. The RTS2370A is fitted with three differential locks; one each for the forward and rear axles in the tandem pair, and one for the transfer gear. This guarantees very good tractive force on slippery surfaces, thereby increasing vehicle productivity. The differential locks are easily regulated with a two-step switch on the instrument panel. When the switches’ first step is engaged, the differential lock for the transfer gear is activated, which couples both of the rear axles together. Using the switches’ second step locks the drive shafts of the respective rear axles together. New design solutions and production methods have re- sulted in a rear axle with an extremely long service life. The rear axle also has long service intervals, which contribute to low operating costs. If approved synthetic oil is used, the oil change interval is after a maximum of 450,000 km or every third year. The following product features characterise the RT- S2370A: • Two single reduction, hypoid gears with great strength and quiet operation. • Heavy-duty, hardened shafts and gears. • Three reliable differential locks, for high vehicle availa- bility. • Unit, maintenance-free bearings for longer service life and easier service. Specifications Designation............................................................. RTS2370A Type: Rear axle........................................... Single reduction, hypoid Transfer gear ........................................... Cylindrical spur gear Weight including drive shafts, hubs, drum brakes (when fitted with leaf springs): Forward axle ................................................................... 806 kg Rear axle.......................................................................... 680 kg Weight including drive shafts, hubs, disc brakes (when fitted with leaf springs): Forward axle ................................................................... 763 kg Rear axle.......................................................................... 663 kg Weight including drive shafts, hubs, disc brakes (when fitted with air suspension): Forward axle ................................................................... 753 kg Rear axle.......................................................................... 640 kg Crown wheel, diameter ..................................... 401-417 mm Drive shafts, diameter ....................................................53 mm Maximum engine torque ......................................... 3550 Nm Max. axle load ............................................................ 23000 kg Max. gross combination weight ............................70000 kg Ratios: Rear axle........................................................................... 2.43:1 ............................................................................................ 2.57:1 ............................................................................................ 2.83:1 ............................................................................................ 3.09:1 ............................................................................................ 3.40:1 ............................................................................................ 3.78:1 ............................................................................................ 4.13:1 ............................................................................................ 4.50:1 ............................................................................................ 5.14:1 ............................................................................................ 5.67:1 ............................................................................................ 6.17:1 Transfer gear ...........................................................................1:1 Oil volume: Forward axle ......................................................................... 20 l Rear axle.................................................................................14 l