#CAPTION# #CAPTION-Mobile# #DOWNLOADTYPE# Download #DownloadDropDown# #file-path# #caption# Home / J.R. Clancy, Incorporated / Manual Theatrical Rigging Systems J.R. Clancy, Incorporated -Multi-Sheave BlocksDOWNLOADS Blocks may be mounted upright or underhung. Blocks with three or more sheaves are constructed with the base angle legs turned in to allow close mounting centers. Base angles are notched to clear ropes and cables. Nylon or ASTM Class 30 grey iron sheaves.Category: rigging systems | stage equipment | stages...MasterFormat: Entertainment and Recreation Equipment | Broadcast, Theater, and Stage Equipment | Rigging Systems and ControlsView Product Details From Manufacturer J.R. Clancy, Incorporated7041 Interstate Island RoadSyracuse, NY 13209 Tel: (800) 836-1885 Fax: (315) 451-1766marilynlarsen@jrclancy.comhttp://www.jrclancy.comFind a rep/distributorRequest More Info DOWNLOADS Related Products Overview Multi-Sheave Blocks Blocks may be mounted upright or underhung. Blocks with three or more sheaves are constructed with the base angle legs turned in to allow close mounting centers. Base angles are notched to clear ropes and cables. Nylon or ASTM Class 30 grey iron sheaves. 17mm sealed precision ball bearings. 12 gauge side plates located outside and between sheaves. See More See Less Downloads SpecificationsOrdering InformationSheaveDiam.LinesBearingsCast Iron Prod. CodeRWLWt.Nylon Prod. CodeRWLWt.8-5/8"217mm BB400-20855C75900 lb27 lb400-20855N75900 lb21 lb8-5/8"317mm BB400-30855C75900 lb35 lb400-30855N75900 lb26 lb8-5/8"417mm BB400-40855C75900 lb42 lb400-40855N75900 lb31 lb8-5/8"517mm BB400-50855C75900 lb50 lb400-50855N75900 lb36 lb