Ronstan S60 BB Ultimate Ratchet Block - manual, swivel shackle head
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
Product information:
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.
Specifications
| Bearing type | Ball bearing |
| Recommended line - Max Ø (mm) | 10 |
| Sheave Ø (mm) | 60 |
| Pin Ø (mm) | 5 |
| Ratchet | Yes |
| SWL (kg) | 250 |
| NBL (kg) | 1370 |
| Weight (g) | 150 |
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