Kesla Oyj has announced that it will demonstrate PTO-driven and truck-mounted biomass chipper innovations at the upcoming Elmia Wood international forestry trade show.
Finland-based forest and lifting equipment manufacturer Kesla Oyj has announced that it will demonstrate PTO-driven and truck-mounted biomass chipper innovations at the upcoming Elmia Wood. According to Kesla, the chippers represent several innovations that it has introduced into its chippers including a new control system and new rotor type that improves chip quality and even productivity.
The new logCUT rotors are available for all three chipper size classes; C645, C860 and C1060. Knives in the new rotor are straight-bladed. In the previous rotor model, the knives were in spiral form or in the row whereas, in the new rotor, the knives are positioned in four segments in the C860 and C1060 or in spiral form.
The number of knives varies according to the rotor size between 6 and 10 knives. Knife-holders are fastened with bolts but the knives are actually friction-locked. This enables quick change of a knife and minimises the number of knife-breakages occurring such as when hitting a stone.
The open chip passages of the rotor transfer chips efficiently to the screen. The passage construction is patented as well as the lower knife holder. Serviceability of the rotors is easier with changeable parts and reversible knives.
Chip quality has been steady and excellent. I have also noticed a remarkable increase in productivity with the new rotor in my C860 chipper – from 180 cubic meters to 250 cubic meters. It can also be seen in the fuel consumption per cubic meter, said Kurt Häggman, a chip contractor with the truck-mounted C860.
The C645-product family has now got a new chute option, proCHUTE, which widens the working area relevantly. Also, the transport position of the chute is lower and its serviceability is good. Slewing of the chute has also got some updates. Benefits are better slewing torque and accuracy. The blower of the C645-model is now equipped with a separate wear part kit. The kit prolongs the lifetime of the blower itself.
Chip quality with the new rotor is excellent. The blowing is precise and even and the trajectory and the outreach of new chute is simply superb, says Alvar Wärn, a chip contractor who updated his Kesla chipper to a C645S-II at the beginning of this year.
New electric control system for chippers
Kesla will also highlight a new proCHIPPER chipper control system, developed by the company itself. It is based on the proC control system that was developed for cranes and loaders. Both the crane and chipper can be controlled by the proCHIPPER and it is available for both tractor-powered and truck-powered chippers.
The system is used with a joystick and through a touchscreen. In the system, there are three different preset chipping modes. The chipping preset modes can be adjusted and saved individually for four operators.
Both contractors will be demonstrating each respective chipper on behalf of Kesla at the exhibition.