JCB's New Zero Tailswing Compact Excavator
JCB has added a 9.9-ton zero tailswing compact excavator to itscompact excavator line. The 90Z-1 has a more powerful engine than the 86C-1 model, with a larger dig end and increased hydraulic capacity.
The 90Z-1 has a revised H-design undercarriage, steel body panels, a spacious operator environment and a Tier 4 Final engine that delivers increased efficiency and lower ownership and operating costs. It's powered by a JCB by Kohler 74 hp diesel engine and uses Bosch Rexroth hydraulic valves, Nachi slew motors and track drives.
With an operating weight of 18,975 lbs, the 90Z-1shares the same width and height over the cab as the lighter 85Z-1 and 86C-1 models. The counterweight remains inside the width of the undercarriage, making it a true zero tailswing machine. The all-steel bodywork provides space for the more powerful engine, with increased hydraulic pump capacity and larger hydraulic cylinders for improved bucket tearout and dipper arm tearout forces.
Maximum digging depth of 13-ft. 7-in., dumb height is 17-ft, 9-in. and reach at ground level is 24-ft. 3-in. A patented, reduced-loss hydraulic system operates with reduced back pressure, eliminating parasitic losses while placing less demand on the engine and reducing fuel consumption. All hoses feature O-ring face seal technology and are color coded for rapid identification.
All JCB compact excavators also use a new graphite-based pin and bush design for 500-hour greasing intervals. Digging equipment has individual hydraulic piping for easy maintenance and hose replacement. Twin auxiliary circuits will be available, and operators will be able to program individual hydraulic flow settings for attachments through the in-cab monitor, making it easier and faster to change between powered attachments such as breakers and thumbs. A 3-degree tilting cab provides ervice access.
The cab provides greater space and increased visibility than on previous compact machines. The cab incorporates an ergonomic switch layout and a new full color LCD display screen with an additional monitor for a rear view camera. There is plenty of in-cab storage, and the machines come with a 12V phone charger and a cup holder.
With longer frames, the tracks deliver improved strength and stability and can be ordered with steel, rubber or road liner (GeoGrip) tracks. Maximum tracking speeds are 1.6 mph- 2.9 mph.
The 90Z-1 is available with a twin-locking, factory-fitted quickhitch system, incorporating a flashing red LED warning light on the boom that indicates quickhitch operation is in progress. The machine will also be available from the factory with a roto/tilt function installed, ready for use with a number of rotating and tilting bucket mount systems.
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