Bolster 1 : (1) The main support for a die on a press. (2) On a logging truck, the frame member that is mounted on the bolster bed and which supports the log load
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}