Equipment World Digital Magazine
Issue link: http://read.dmtmag.com/i/634023
February 2016 | EquipmentWorld.com 26 machine matters | continued Cab and controls OEMs have been touting cab size growth in smaller machines, but bigger isn't always better with these larger loaders. "In mid-size loaders, what matters more than sheer size is configuring space, providing con- nectivity for electronic devices and maximizing storage options," says Chesterman. Stark notes that smaller compo- nents open up more space without making cab dimensions any larger. "Doosan made the steering column smaller from the floor to the top. And because membrane switches take half the space of rocker switches, we were able to make our panels smaller." Engineers added interior space to the CommandPlus cabs on JCB loaders by positioning the HVAC system outside of the cab. "This provides additional storage for use by the operator behind the seat, as well as in pockets on the front and side consoles," says Ashby Graham, heavy line sales manager, JCB. Komatsu America redesigned their cabs when moving from -6 (Tier 3) to -7 (Tier 4 Interim) models. There was a new console, standard rear- view camera, and slightly more leg room achieved by moving the seat back a bit. The current -8 (Tier 4 Final) models retain these features, and have further increased comfort with the inclusion of Sears Seat- ing seats. HVAC saw no significant changes; it worked well already. "It's a set-it-and-forget-it function," says Craig McGinnis, product mar- keting manager of wheel loaders, Komatsu. Most OEMs offer air-ride seats as either standard equipment or as an option. SDLG directs customers to the aftermarket for air bladders to convert their mechanical suspen- sion seats to air ride. Much of an operator's comfort comes from the response character- istics of the loader. The eco-pedal feature on Hyundai loaders pro- vides feedback by way of resistance (at the throttle pedal as the engine reaches 90 percent or more of its maximum rpm) to help operators stay in the more fuel-efficient range of engine speed. Komatsu WA380-8 and WA470-8 loaders have a semi-auto dig func- tion that curls the bucket at the touch of a button, and the WA500- 8 has full auto dig that curls the bucket and lifts the boom. "Au- tomating functions that operators do most often is an effective way to reduce fatigue and enhance comfort," says Rob McMahon, wheel loader product marketing manager, Komatsu. With the Caterpillar Intelligent Hydrostatic system, operators control engine speed with the right pedal and travel speed with the left pedal. "This allows operators to enjoy quick cycle times with high RPMs, along with full control of both speed and wheel torque dur- Cab volume is increased up to 10 percent in Hyundai HL900 series loaders over previous models. Features include a 7-inch touchscreen monitor and enhanced cli- mate control with high-capacity filtration and additional vents for better airflow management. Joystick steering, as seen on this Deere 844KII, can improve productivity and reduce operator fatigue. An improved adjustable steering column improves ease of operation and provides more legroom in Doosan DL300-5 through DL550-5 loaders.