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Ronstan Series 75 RB Block, Single Upright Lead
    Code: RONRF78171
    Original Price:$481.00
    Price: $408.85
    Quantity in Basket: None
    Imperial Metric
    Sheave Dia. 3" 75 mm
    Max. Rope Dia. 9/16" 14 mm
    Fastener Dia. 3/8" + 5/16" 10 mm + 8 mm
    Maximum Working Load 4390 lb 1990 kg
    Breaking Load 8770 lb 3980 kg
    Weight 12.4 oz 352 g

    Product Description

    The self-contained alloy sheave packages provide reliable, low-friction performance at high loads. The high axial loads are carried by Torlon® roller needle bearings, while side thrust loads are taken up by Acetal ball bearings. Block sheave and cheeks ar.

    • Alloy sheave and housing.
    • Torlon® needle rollers.
    • Black carbon Acetal ball bearings.

    Typically used for halyards at the mast base.

    Part Number: RF78171

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