Caterpillar has developed a propel drive system upgrade for Cat 7495 and 7495 HF Electric Rope Shovels. The upgrade reconfigures the crawler undercarriage to allow drive shaft and tumbler replacement from the outboard side, which improves access and decreases downtime by days. Improved component design extends durability and increases component life to reduce costs even further.
The new design slashes maintenance time and enhances safety by enabling access to drive components without removing the propel transmission. Additionally, Caterpillar engineered the upgrade to be a direct replacement. No machining of the crawler frame is required for installation.
The new design also is robust. Thrust loads are evenly distributed on large tapered roller bearings as opposed to bronze thrust plates, and the bearings are sealed and continuously purged with fresh grease to keep them free of contaminants. The result is increased durability in harsh environments and alignment with 25,000-hour planned rebuilds.
The propel drive system upgrade has operated successfully for thousands of hours in field validation.
As one of the latest models in the R2-Series excavator lineup, the Bobcat® E88 delivers durability, performance and quality for more productivity. Technically speaking, it's a compact machine, but it brings big performance with its redesigned engine and optimized lift performance, plus undercarriage and counterweight improvements. All these enhancements make this excavator one of the highest-performing models in its size class. With impressive over-the-side lift capacity, you can dig with greater confidence over the side of the machine. Put it to the test against similar models from other manufacturers. You'll see that the E88 can outwork the competition.