#CAPTION# #CAPTION-Mobile# #DOWNLOADTYPE# Download #DownloadDropDown# #file-path# #caption# Home / J.R. Clancy, Incorporated / Counterweight Rigging Systems J.R. Clancy, Incorporated -Multi-Sheave BlocksDOWNLOADSFeatures 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.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) firstname.lastname@example.org://www.jrclancy.comFind a rep/distributorRequest More Info DOWNLOADS Related Products Overview Multi-Sheave BlocksFeatures 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 SpecificationsOptionsSheaveDiam.LinesBearingsCast IronProd. CodeRWLWeightNylonProd. CodeRWLWeight8-5/8″ (219 mm)217mm BB400-20855C75900 lb (408 kg)27 lb (12 kg)400-20855N75900 lb (408 kg)21 lb (9.5 kg)8-5/8″ (219 mm)317mm BB400-30855C75900 lb (408 kg)35 lb (15.9 kg)400-30855N75900 lb (408 kg)26 lb (11.8 kg)8-5/8″ (219 mm)417mm BB400-40855C75900 lb (408 kg)42 lb (19 kg)400-40855N75900 lb (408 kg)31 lb (14 kg)8-5/8″ (219 mm)517mm BB400-50855C75900 lb (408 kg)50 lb (22.7 kg)400-50855N75900 lb (408 kg)36 lb (16.3 kg)Change the last two characters from “75” (3/4″ rope) to “25” for 1/4″ cable.RWL: RWL is maximum load that can be applied to a block which is in “like new” condition and has been properly installed, maintained and operated.