Tips for Spec'ing Ready-Mix Mixers

The Kenworth T880's windshield is 50% larger to give operators a better view of the terrain, obstacles, and workers around them. In the footwell, the T880 uses firewall-mounted hanging pedals instead of floor-mounted pedals, and an air-assisted hydraulic clutch requires only half the pressure of a traditional clutch so engages easily, without a lot of leg movement.

A larger interior, a more logical dash and switch layout, better visibility, and information centers with instant feedback are features that can improve the driver’s experience both on the road and at the job site. Kenworth’s T880 vocational truck cab, introduced in 2013, is a prime example. At 82.7 inches, the T880 cab is 10 inches wider than its predecessor and has 23 inches of room between the seats. Kenworth added 4 inches of space behind the seats to allow for more seat travel and provide room on the back wall for hooks to hang coats and hard hats.

An 11-liter engine, with the proper power band, can rival a 12- or 13-liter engine in terms of performance yet provide the low weight and optimal fuel consumption you expect from a smaller engine. The new, 10.8-liter PACCAR MX-11 engine – available in 2016 – strikes that balance. It will be available in horsepower ratings from 355 to 430 hp and 1,250 to 1,550 lb-ft of torque and weighs up to 400 pounds less than larger displacement engines. The PACCAR MX-11 engine is designed to achieve a B10 life of 1 million miles while meeting the demands of heavy-duty truck applications.

Best Redi-Mix operates three plants – the original Houston location, plus plants in Hockley and Conroe, Texas – each working a 25-mile radius.

Purchased through Rihm Kenworth, Knife River’s North Central Region runs 80 Kenworth T880s in mixer, dump and tractor configurations. The Kenworth T880 mixers are equipped with McNeilus mixer drums and the PACCAR MX-13 engine, rated at 380-hp, driven through Eaton Fuller 11-speed transmissions.

Knife River’s North Central Region runs 80 Kenworth T880s in mixer, dump and tractor configurations. The Kenworth T880 mixers are equipped with McNeilus mixer drums and the PACCAR MX-13 engine, rated at 380-hp, driven through Eaton Fuller 11-speed transmissions.

A Knife River driver unloads a load of concrete from his company-assigned Kenworth T880 mixer at a residential jobsite. Knife River runs Kenworth T880 mixers with set-back front axles and added 3 1/2 feet of length to take full advantage of increased overall length limits from 40 to 45 feet in North Dakota and Minnesota. Ordinarily, the company chose mixers with set-forward front axles in order to carry up to 11 yards of concrete. The T880's turning radius more than makes up for the additional length, company officials say. Plus, the longer Kenworth T880s with set-back front axles can still haul 11 yards.

This Kenworth W900S with a ConTech 10.5 cubic-yard mixer sports a pink paint scheme to support Breast Cancer awareness.

Producing over 600,000 cubic yards of concrete in 2014 through 21 ready-mix plants, 3 plants making concrete masonry units, and their transportation company in northwest Arkansas, Humboldt, Kan.-–based Monarch Cement sells cement to its 11 subsidiaries in Kansas, Missouri, and Arkansas. Monarch Cement standardizes on the Kenworth W900S for its mixer fleet. Kenworth’s W900S, with set-forward front axle has been the go-to mixer for Monarch and its subsidiaries including Salina Concrete for many years.

This compressed natural gas-powered Kenworth T440 has a standard 10.5 cubic-yard McNeilus mixer, 320-hp Cummins Westport ISL G natural gas engine, and Allison 6-speed transmission.

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