PACCAR’s proprietary 40,000-pound tandem

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PACCAR has unveiled a new proprietary tandem axle rated at 40,000 pounds and supporting Gross Combination Weights of up to 80,000 pounds.

The new axle reduces vehicle weight by up to 150 pounds and improves fuel economy, says Landon Sproull, vice president – PACCAR powertrain. Some of that is realized with a laser-welded carrier design. It also features a pinion-through-shaft design to simplify the power flow through the axle.

The axle comes with ratios of 2.47 to 3.70, and is compatible with engine torques up to 1,650 lb-ft or multitorque ratings up to 1,750 lb-ft. The warranty extends to five years or 1.2 million kilometers.

Designed to support linehaul, regional, and Pickup and Delivery operations, it will be available beginning in January 2017.

Peterbilt has announced that it will be standard on Model 579 trucks spec’d for linehaul applications.

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John G. Smith is the editorial director of Newcom Media's trucking and supply chain publications -- including Today's Trucking,, TruckTech, Transport Routier, and Road Today. The award-winning journalist has covered the trucking industry since 1995.

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