JCB Expands Excavator Range with the 90Z-1 Zero Tailswing Compact Excavator
JCB has added a 9.9-ton zero tailswing compact excavator to its rapidly expanding compact excavator range. The 90Z-1 boasts a more powerful engine than the recently released 9.4-ton 86C-1, with a larger dig end and increased hydraulic capacity to further boost performance.
The 90Z-1 features a revised H-design undercarriage, robust steel body panels, a spacious operator environment and a powerful Tier 4 Final engine that delivers increased efficiency and lower ownership and operating costs for the customer. The machine is powered by a JCB by Kohler diesel engine delivering 74 hp (55 kW). This drives through Bosch Rexroth hydraulic valves, Nachi slew motors and track drives.
With an operating weight of 18,975 lbs, the 90Z-1 shares 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 resulting in superior bucket tearout and dipper arm tearout forces.
Longer digging equipment provides the 90Z-1 with a maximum digging depth of 13 feet 7 inches, a dump height of 17 feet 9 inches and a reach at ground level of 24 feet 3 inches. 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.
A sturdy swing bracket design with widely spaced bearings prevents wear. All JCB compact excavators also use a new graphite-based pin and bush design for 500-hour greasing intervals, reducing daily maintenance and lowering operating costs. The swing bracket design with slewing boom is proving increasingly attractive to customers when compared to a conventional 14.3-ton, fixed-boom crawler excavator, particularly for confined site access.
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.
Rapid Travel Capability
The compact excavators sit on an all-new, H-pattern track frame with an open design and sloping side frames for easy cleaning. 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, allowing fast repositioning on site and cutting downtime.
The machines also feature completely redesigned dozer blades and arms. The blade profile has been optimized for smooth material flow, and there is no requirement for strengthening the side plate, allowing easy cleaning of the machine. Blade edges are angled to prevent damage and a four-way tilt adjustable dozer will be available as an option, all controlled with an electro-hydraulic dozer control lever in the cab.
