Terex O&K Unveils New Hydraulic Excavators
The new model features a more powerful hydraulic system with higher-capacity main pumps, delivering oil flow of 4 x 1,300 l/min, and incorporating four main valve blocks to accommodate the higher oil flow.
O&K’s quarry-class, 122-mt RH 70 backhoe excavator is powered by a Caterpillar C18 engine and offers 8 m3 of standard bucket capacity, matched to a 7.8-m monoboom and 3.3-m stick. The RH 70 features electric-over-hydraulic controls and is claimed to have the largest operator cab in its class, including a control panel specifically designed for mining applications.
Other key features are a triple race swing-roller bearing with internal lube lines and a fully independent oil cooling system. The RH 70, according to Terex O&K, matches up well with 50- to 120- ton trucks.