Terex Finlay’s recently introduced J-1170AS model is a high-performance primary mobile jaw crusher built around the proven Terex 1,100- x 700-mm (44- x 28-in.) jaw crusher. The jaw chamber, according to the company, provides excellent material reduction and product sizing in the processing of blasted material.
It has an optional hydraulic release with automatic overload protection system to prevent damage by uncrushable items in the feed material. The machine is powered by either a Tier 3/Stage 3A, 261-kW (350-hp) Caterpillar C9 or a Tier 4i, 257-kW (350-hp) Scania DC9 70A diesel. Its hydrostatic transmission offers reversible operation in the event of a blockage. The hydrostatic system also provides variable chamber speed to suit given applications. The crusher features hydraulic assist Chamber CSS (Closed Side Setting) adjustment, which can be changed in a matter of minutes. The machine has a heavy-duty variable speed vibrating grizzly feeder (VGF) with integrated pre-screen, providing aggressive action to separate fines material efficiently. The variable speed VGF ensures continuous choke feeding of the crushing chamber for optimal productivity. Material from the pre-screen can be diverted to a stock pile via the onboard bypass conveyor or joins the crushed product on the main belt. The 9.6-m3 (12.55-yd3) hopper has hydraulically folding sides and an innovative hydraulic self-locking mechanism to provide efficient and faster machine setup and tear down.