The next generation loaders from Cat.

Redesigning its skid-steer and multi-terrain loaders (MTL), Caterpillar Inc., Peoria, Ill., has introduced the next generation in its machine lineup, the B series. The B series machines incorporate upgraded engine systems and high flow and high flow load sensing hydraulic options and are designed for construction, quarry and aggregate, heavy construction, ag, forestry, industrial and waste industry applications. The skid steer loader range also gets a new model, the 268B, and the elimination of another machine, the 228.

According to Gary Ringenberg, skid-steer loader/MTL commercial manager for Cat, changes made in both lines continue the focus on leveraging large Caterpillar machine technology while still retaining dimensions, major components and the differentiating features (i.e. anti-stall, pilot controls, serviceability) of the previous models. Of the 15 machines comprising both lines, eight were fitted with a larger engine displacement, eight more models with turbocharged engines and higher horsepower in 14 models, he said.

Powering the 216B, 226B, 232B and 242B skid-steer loaders is Cat's 2.2 L, four-cylinder, inline 3024C engine, rated 48, 57, 49 and 57 hp at 3000 rpm. A naturally aspirated platform is used on the 216B and 232B models with a turbocharged version on the 226B and 242B. The 236B, 246B, 248B, 252B, 262B and new 268B skid-steers include Cat's 3.3 L, four-cylinder, direct-injection turbocharged 3044C diesel rated 70, 78, 76, 70, 78 and 76 hp at 2400 rpm, respectively.

Cat's 3024C and 3044C engines are also featured on the MTLs with ratings t between 57 and 78 hp, depending on model. The Tier 2, mechanically controlled engines are cooled by tilt-up cooling packages incorporating a hydraulically driven fan and monoblock hydraulic and engine oil cooler.

The loaders' drive system is directly driven off the inline engine to dual variable displacement axial piston pumps. The pumps supply two large displacement hydrostatic motors which drive high-strength pre-stressed chains located on each side of the machine. Each chain features a separate chain case and is connected to a larger sprocket which drives a short axle to power the wheels on the machine. A similar drive system is used on the MTLs supplemented by two final drive motors, which drive the tracks without using chains.