One of the important selling points of the Truck of the Year Australia winner, is the relationship between Cummins Meritor and the K220 from Kenworth in the engine and drive axles. The majority of those trucks coming down the production line at Bayswater will be fitted with the Cummins Meritor rear end.
Power to the Drives
In the Kenworth K220, Cummins Meritor offers several drive axle options including both a linehaul (pumpless – efficient) and vocational (Pumped with HD bearings and improvements for longevity) in the 160 series. These two axles are designed to complement the design parameters of the Efficiency and Performance engines from Cummins.
The majority of K220 are likely to end up in B double/linehaul applications and for these, the pumpless Linehaul variant of the 160 series axle; the MT21-165G, is most likely to be fitted. It has been designed to enhance the fuel efficiency capabilities built in further up the drive line. It can be plated up to 97tonnes GCM and is available in rear axle ratios up to 4.30:1 and fitted with the Airglide suspension.
When it comes to the tougher vocational tasks the K220 may have to handle, another version from the 160 series; the MT21-165GP which has a pumped carrier and can be specified up to 110 tonnes GCM, will be the preferred option. These axles are designed for greater longevity in the heavy vocational space. There are also other Meritor drive axle options available in the K220 as the GCM rises above the 110 tonnes mark.
Integrated Powertrain
The Cummins engine and drive axle choices in the K220 have been designed to integrate with the other major component; the transmission. In the case of the AMT all engine and rear axle options have been specified in co-operation with Eaton to enhance both efficiency and durability. For a more complete wheel-end to wheel-end solution K220 customers can also specify a Meritor MFS series front steer axle, Meritor RPL driveline and Meritor Q+ Drum or Disc brakes all round.
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