The increase in productivity is due in part to a larger bunk, FlexBunk, the height and width of which can be adjusted from the cab. Other contributing factors are the new, sturdier powertrain, with its higher engine power/torque and traction, fantastic terrain mobility provided by the Komatsu Comfort Bogie with portals, a boat-shaped chassis with high-tensile steel underneath, and a front blade that can be raised higher than ever. The intelligent transmission, which optimizes power and speed based on terrain, load, the engine’s power output and whether you are also using the crane, has been supplemented with a larger hydrostatic pump and hydrostatic motor for even better handling.
Komatsu 875 comes with the option of a newly-developed crane with a gross lifting torque of 145 kNm and a gross slewing torque of 38 kNm. The combination of an improved hydraulic system and, among other features, a larger crane valve and hydraulic pump ensures superior productivity and outstanding crane operation. The crane with a single extender reaches a full 8.5 meters and has plenty of net lifting power thanks to the weight-optimized boom system.
The machine has been designed throughout to ensure excellent reliability in tough conditions, and the new axles and a new articulated joint and frame system are all built to last. This saves money in the long term by reducing downtime and maintenance. The articulated joint and drive shaft are fitted with a new type of bearing seat seal for a long service life and lower service costs.
The new engine installation features a new, generously sized cooling system, variable temperature-controlled fan control, and the latest in environmental engineering for diesel engines (Tier 4), with SCR technology but without the need for exhaust gas recirculation. This, together with the new hydraulic system, delivers low fuel consumption and a high power output at low engine speeds. The new engine reduces emissions of NOx and soot particles. Larger batteries, with the option for battery condition diagnostics via the fleet management system MaxiFleet, ensure that the machine starts even on cold, subarctic winter mornings.
The new look of the machine gives it a powerful yet smart appearance, and the numerous improvements make servicing the machine even easier. The new rounded engine hood is electrically powered and can be used as a service platform in the open position. All filters are located beneath the hood, for easy access. There are 8 service hatches in the chassis providing access where it is needed most. A drain valve under the engine makes it easy to replace the engine oil without spillages. Easily accessible inspection points for oil in the engine, differentials and gearbox.
As always with a Komatsu forwarder, the operator is the focal point. The most modern forwarder cab on the market has once more been upgraded. Improved operator protection is provided by a sturdier cab framework, a FlexGate patented full height gate, and windows secured with bolts for straightforward replacement of worn windows. Some of the other upgraded features include a start button, central locking with a remote control key, additional work lights and MediaZone. The cab suspension, Komatsu Comfort Ride, delivers unbeatable operator comfort.
Komatsu 875 is supplied complete with the market’s most modern control system, MaxiXplorer. The fully-integrated crane scale, Protec Scale, enables the load to be weighed automatically for production follow-ups and operational monitoring. The scale link is just as compact as a standard link and protects the hose routing for the rotator. Production can be monitored back at the office in MaxiFleet, the world’s first fleet management system for forest machines.