Comer Industries, Reggiolo, Italy, recently expanded its product range with a line of purpose-built track and slew drives specifically for the excavator market.
The PGR 18000 series is for 80 to 100 ton size machines, and is built to meet the highest performance and reliability requirements in the toughest working conditions, said company officials. They indicate that Comer Industries is now of supporting all OEM customers worldwide where there has historically been a lack of reliable and advanced suppliers in this size range.
This new package solution has been designed in collaboration with a well-known Japanese hydraulics manufacturer. The three planetary drives unit, which comes in a wide range of ratios, can now also be equipped and supplied with an advanced, plug-in 300+ cc, two speed axial-piston motor.
Based on the same design concept of the standard Comer Industries wheel-drive range, this new final drive has been optimized for high-volume excavator markets. It uses high-strength monolithic housings capable of accepting hydraulic components of the motors while also withstanding the high mechanical loads required by the application. Such a design delivers high power density in a cost-effective package that is required in this competitive market.
In order to offer power transmission solutions for the entire excavator market, the PG-2800 series slew drive, intended for 36 to 50 ton range if used alone or 75+ ton machines as twin set, is also available. Such units can also be used on forestry machines and material-handling equipment. With a wide selection of pinions to meet customers’ requirements, these two-stage planetary slew drives can be coupled either with a 160 cc or 200 cc stand-alone slew motor and supplied as a complete package; or can be delivered as the gearbox alone.
Made from the same high-quality materials as traditional Comer Industries slew drives, these new units feature alloy steel shafts and gears, spheroidal cast iron housings, and custom materials for output pinions for use in extreme climates. To deliver the most efficient and cost-effective designs for the high-volume excavator markets, the use of monolithic housings saves material, reduces weight, assembly time, cost and overall footprint when compared to modular designs.
In cases where monolithic castings are not required, the company still offers its full line of completely modular slew drives which are easily configured to meet each customer’s individual requirements. A variety of output options such as flange mounting, splined shaft or integral pinion outputs, and the ability to accept either hydraulic or electric motors, lets users adapt the slew drives to fit most any application.
These solutions, thanks to their state-of-the-art design, virtual simulation and manufacturing technology, maximize the power density and reduce size, while fulfilling the growing needs of OEMs in terms of performances and improved efficiency, said the company.