Ronstan Utility Block, Series 60 & 75 – Single

Description

The patented extruded hole design, in conjunction with the groove profile of the sheave, provides a more powerful grip than conventional designs – up to 20:1 holding power. Unrivalled low weight is achieved by the use of a Torlon ratchet pawl, high grade machined alloy sheave and black Acetal hubs and bearings.

On-Off switching knob is fitted to both sides of the swivel blocks (one can be removed if desired). Ratchet blocks can be disassembled for sheave replacement with RF62000.

Features:

• Unrivalled 20:1 holding power
• Dual sided On-Off switch
• Ability to operate On/Off switch under load
• Low friction ball bearing system
• Lightweight
• Cheek cut-outs for easy bearing maintenance

Applications:

• Mainsheet on powerful dinghies and skiffs
• Series 60 mainsheet systems on sportsboats using RF7 mainsheet swivel units
• Control line applications on larger yachts
• Spinnaker sheets on sportsboats and small keel boats (lateral lead blocks)

Materials:

• Carbon black Acetal ball bearings
• Anodised aluminium sheave and cheek plates
• Torlon ratchet pawl
• Grade 316 stainless steel forged shackle