Keestrack unveils B3e jaw crusher

Keestrack presented its diesel electric B3e jaw crusher, a hybrid variant of its model deployed on building and recycling sites, at MATExpo in Belgium.

According to the company, the B3e offers the same advantages of the track-mounted 30-ton machine, but now with lower maintenance costs and an opportunity for operating subsequently connected units cost-effectively. Also, the crusher, without support legs, can keep up with work on building sites and in quarries, and because of track and chassis construction, it can also be deployed on challenging surfaces.

The B3e also offers compact transport dimensions, low transport weight and a 1,000 x 600 mm width jaw. Crushing capacity delivers up to max 300 tph, thanks to a gap width of 45-170 mm that can be adjusted at all times with the company’s “non-stop system,” including overload protection and wear monitoring.

The diesel electric B3e’s crusher, heavy-duty vibrating primary screen and track drive are all diesel-hydraulically driven, and the company’s own load-sensing hydraulic control offers low consumption rates of the 160-kilowatt Volvo diesel engine. A compact 42.5 kVA on-board generator supplies the power, which reduces diesel operation speed, cooling requirements, risk of leakage and maintenance costs because the elimination of hydraulic motors and corresponding pipework. According to the company, the reduced piping means the B3e has 100 liters less hydraulic fluid.

The company says the crusher also provides fuel savings and operating cost advantages when driving a subsequently connected electrical screening unit or a stockpile conveyor.

Dimensions and weight of the diesel electric machines are largely identical to the diesel hydraulic system, however, the B3e can be used for rapid relocation. A fully electric version, the B4e, is also offered by the company. The B4e uses a 110-kilowatt electric motor for driving the 1,100 x 700 mm crusher.