Terex O&K Unveils New Hydraulic Excavators

Terex O&K recently released two new hydraulic excavators: the RH 340-B and the RH 70. The mining-class RH 340B— successor to the popular RH 340, pictured above—is available in both front shovel and backhoe configurations, each powered by twin Caterpillar 3512C or optional Cummins QSK 45 diesels, with both options delivering 2,240 kW (3,000 hp).

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.