Liebherr introduced the 250-metric ton (mt) R 9300 Generation 8 excavator following successful validation at a mine in Indonesia. Announced at bauma 2022 as the replacement for the R 9250, it is available for purchase now and will enter serial production in 2024.
The excavator features the latest Liebherr Mining technology designed to improve performance and offer compatibility with Liebherr’s Assistance Systems, automation, digital services and zero-emissions solutions, Liebherr said. The R 9300’s engine is available in FCO and US EPA Tier 4-, EU Stage V-compliant versions. Liebherr Power Efficiency, an engine and hydraulics management system that helps decrease fuel consumption, comes standard. An electric-drive version of the R 9300 is currently being developed.
The R 9300 has an updated attachment design that is lighter and stronger than that of the R 9250, Liebherr said. The new attachment comes standard with high-performance components, such as a new stick and boom design and aluminum covers. The design enabled an increase in bucket size in both the backhoe and face shovel configurations. The excavator is an effective pass match for trucks with 100-, 130-, and 180-mt payloads.
The R 9300 shares parts commonality with Liebherr’s current excavators to help minimize maintenance costs and streamline onsite inventory. The lifespan of the R 9300 has been increased by 33% above the R 9250 from 45,000 to 60,000 hours, Liebherr said.
In validation studies, the excavator achieved a 26-second average cycle time for 1,371 bank-m3 per hour, or 3,017 mt per hour, the supplier said. The R 9300 also attained a fuel efficiency ratio of 9.22 bank-m3/liter of fuel burned.