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551 in 14 mm <
79 mm 2 1/16 in
A center cage keeps Torlon roller bearings separated and parallel to reduce friction
Optimum Line Size
Ronstan Series 30 BB Block, Double Exit With Cover Plate Hayn Rigging Pins 551 in 14 mm <Ronstan Series 30 BB Block, Double Exit With Cover Plate Precision moulded Acetal sheaves running on Acetal ball bearings provide high performance & low friction. The 2 stage ball bearing system provides consistent performance over the full load range. Specifications: Max. Rope diameter (in): 5 16 Sheave diameter (in): 1 3 16 Fastener (in): 3 16 Materials: Grade 316 stainless steel housing. UV stabilised Acetal sheave.
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