Harken Ratchet Carbo Swivel Blocks

£ 53.95£ 85.95

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Carbo ratchet blocks allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing.

Nylon resin sideplates are densely packed with long-glass fibers for a compact block with a high strength-to-weight ratio. Machined aluminum sheaves are hardcoat anodized for strength and corrosion resistance. Eight facets hold line securely. Ball bearings, sheave, and sideplates are UV-stabilized with carbon black for maximum protection.

40mm
The 40mm ratchet is ideal for jib sheets and spinnakers where size and weight are critical. It has an on/off switch.

57mm & 75mm
The 57mm and 75mm switchable ratchets provide precise on/off control with accessible, easy-to-operate on/off switches on both sides of the block.

For the ultimate system, mount a switchable ratchet in the cockpit and a boom-mounted Ratchamatic® block directly above for double holding power in heavy air and a free-running mainsheet when it’s light. The 75 mm provides up to 15:1 holding power; the 57 mm 10:1.

Sheave ∅   Length  | Weight  | Shackle Pin ∅  | Maximum Line ∅  | Maximum Working Load  | Breaking Load
40mm   86mm   49g   4mm   10mm   136kg   454kg
57mm   103mm   85g   5mm   10mm   227kg   907kg
75mm   137mm   227g   6mm   12mm   341kg   1361kg
Part Number
Size
Port Solent
Warehouse
99087562
40mm
1
1
99132439
57mm
2
0
99138608
75mm
2
0