This standard specifies terminology and specifications for self-propelled crawler loaders, wheel loaders, and their working equipment. This standard applies to loaders specified in JIS A 8308.
JIS A 8421-1:1998 history
1998JIS A 8421-1:1998 Earth-moving machinery -- Loaders -- Part 1: Terminology and commercial specification
1994JIS A 8421:1994 Terminology and standard form of specifications of loaders