Hitachi Computer Augmented Excavator

John E Mahoney

doi:10.4271/881229

Abstract

<div class="htmlview paragraph">The new generation of hydraulic excavators is being called “the Intelligent Excavator”, partially because of the microcomputer that helps the operator be more economical in operation. This new machine has been awarded 46 new U.S. patents, the majority of those patents are concerned with the microprocessor, and the purpose of this paper is to explain this new approach in excavation.</div>

Conference Article
10.4271/2006-01-3504

JCMAS New Grease Specifications for Construction Machinery

Oct 31, 2006
SAE technical papers on CD-ROM/SAE technical paper series
Tsunejiryo Seno + 18 more +18

<div class="htmlview paragraph">Since construction machinery manufacturers recommend various brands and types of greases for their machinery, customers would benefit from a standardized grease which can be used in all construction machinery. Furthermore, construction machinery manufacturers have many experiences of field problems caused by commercially available and commonly used EP Lithium greases. Therefore, the Fuels and Lubricants Committee of Japan Construction Mechanization Association (JCMA) has developed a new grease specification called “Japan Construction Mechanization Association Specification (JCMAS) GK,” for construction equipment. The JCMAS GK includes requirements for National Lubrication and Grease Institute (NLGI) No. 1 and No. 2 consistency grades. The JCMAS GK greases have enough lubricating properties for periodical grease fitting of most construction machines, hydraulic excavators, bulldozers and wheel loaders. The JCMAS GK greases are applicable from -20 to +130 degrees Celsius. The JCMAS GK greases can also improve nitrile and urethane seal durability. Finally, a biodegradable grease specification was established, JCMAS GKB, was established for construction machinery.</div>