New Products Hydro-Gear has developed the ZT- 5400 powertrain, adding to its ZT series hydrostatic transaxles. Developed for the commercial markets, the ZT-5400 comprises automotive-style planetary gears; a piston pump and motor; heavy-duty shafts, gears and bearings; internal wet disc brake; and a two- speed drive system for shift-on-the-go transport speed.
sizes and SAE zero through 3 fly- wheel housings. The clutch design also incorpo- rates a balanced-force approach to eliminate thrust loads and reduce generated heat, prolonging seal and bearing life, said the company. Marco has also introduced the series DS of compact oil-actuated pressure-set clutches, designed as an input clutch to a hydraulic pump drive, pump drive output clutch, sin- gle pump PTO and for use in direct driveline applications. Engagement speeds are able to reach 3500 rpm with actuation pres- sure controlling the clutch slip torque, said Marco. The DS clutches are avail- able on standard SAE C or D configu- rations at either input or output shaft ends. It is rated for 1200 lb.ft. of torque.
Knott Brake Co.
New Products KFM Friction, the joint venture be- tween Knott Brake and Germany’s Frima Friction Material Reibbelag GmbH Co. KG, has announced the addition of Beral equivalent friction materials. Available as linings, the materials are well-suited to medium- and heavy-duty parking brake appli- cations while still being cost-effective for light-duty vehicles. Like all of KFM materials, the Beral equivalent prod- ucts are asbestos-free.
Logan Clutch Corp.
New Products Logan has expanded its front PTO offering to include Caterpillar, Kohler and Cummins diesel engines. The clutches are designed to transmit up to 100% of the engine’s torque off the front of the engine.
New Products Lovejoy Inc.’s new rotation-elastic Rosta MB 100 Motorbase, with a slip- page-compensating operating mode, is designed to provide maintenance- free suspension for the drive motors used in machinery with big friction belt drives such as stone crushers, wood- chippers, stone saws and cyclone pumps. The flexibly mounted and pre- tensioned drive motor is engineered to automatically and continuously compensate for belt elongation. This effectively eliminates torque peaks, greatly improving the service life of the belt sets, the company said. The self-adjusting universal motor- base is for friction belt drives with drive power in the 120 to 335 hp. The heavy-duty motorbase comes fully assembled and ready to use. The two- part motor plate includes as a stan- dard feature, the mounting holes for all motor frame sizes listed above. The belt tension can be accurately set by using a mechanical pre-tensioning unit, the company said. The bevel gear-lifting spindle has a maximum tensioning travel of 4. 7 in. and, depending on the desired motor inclination angle, can be secured to two different positioning holes on the Rosta rubber suspen- sion element.
Marco Global Inc.
New Products Marco Global is offering a new series of hydraulic pump drives for heavy-duty applications. Eight sizes are available ranging from 100 to 1000 hp and with various increasing or decreasing gear ratios and a selection of input arrangements. Integrated into the pump drive is an engine-mounted, remote-operated input clutch; it is available with either air or oil actuation. The clutch re- quires no pilot bearing or clutch plate adjustments, said Marco. It comes in standard SAE 11 in. through 18 in.
MIC O In c.
New Products MICO has developed a check valve assembly designed for full-power brake systems in mobile equipment and vehi- cles. The system is a compact manifold assembly that incorporates a check valve and an inverted shuttle valve. The assembly supplies fluid for two separate accumulator circuits while reducing the necessary number of system compo- nents and limiting plumbing and hard- ware requirements, MICO said. The MICO check valve assembly is targeted toward full-power hydraulic brake systems that must store energy in two separate accumulator circuits, such as split systems with a pressure- compensated pump and electrohy- draulic accumulator charging controlled by a pressure transducer at the unit’s switch port.
March 2010 DIESEL PROGRESS NORTH AMERICAN EDI TION 85
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