8. Hardware 300/301 PART NO A B C mm in mm in mm in 60mm Footblock 98.0 37/8 51.0 2 59 25∕16 72mm Footblock 110.6 45∕16 58.0 25∕16 71 213∕16 90mm Footblock 134.0 54∕16 69.0 211∕16 89 31∕2 PART NO SHEAVE Ø WORKING LOAD LIMIT WEIGHT Kg lb g oz 29926061BK 60 800 1764 162 5.70 29927261BK 72 1200 2645 229 8.10 29929061BK 90 2000 4409 430 15.20 PART NO SHEAVE Ø WORKING LOAD LIMIT WEIGHT Kg lb g oz 29926064BK 60 800 1764 190 6.70 29927264BK 72 1200 2645 250 8.80 29929064BK 90 2000 4409 480 16.90 A B C Standard and jammer options can be double stacked The upper sheave should not be loaded beyond 60% of WLL Synchro Footblock Footprint Use M8 (5/16) fixings for the 60/72mm sheaves and M10 for the 90mm sheaves - Not included Use M8 (5/16) fixings for the 60/72mm sheaves and M10 for the 90mm sheaves - Not included Aluminium Footblock Aluminium Footblock with Jammer Synchro Footblocks Synchro Footblocks feature alloy cheeks, fixing isolators, and a moulded base plate to prevent sealant ingress into the sheave. Jamming footblocks are designed to hold light hand loads only. ▪ Standard and jammer options can be double stacked ▪ Two-step jammer action keeps lever close to side of the block ▪ Optimised jammer shape holds line central on the sheave ▪ Tough alloy cheeks ▪ Synchro sheave loads match the same sized blocks ▪ Twin fixings with inserts ▪ Wide head for a solid base, block will not “roll” on the deck ▪ Moulded base plate with recess to hold sealant around fixing screws and prevent ingress onto the bearing and sheave
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