Spinlock TSR20 – 4 Sheave Organiser (Standard and Low Profile)
The Spinlock TSR20 4 Sheave Organiser delivers strong, precise line diversion in compact decks where multiple high-load lines need routing aft from clutches or jammers. Built with 20 mm alloy sheaves on plain bearings, it provides smooth and controlled deflection while withstanding significant working loads.
Its modular design allows sheaves to be repositioned to custom spacing, and the tulip-shaped sheave geometry minimises friction when lines experience vertical deflection. A low-profile TSR20L version is available for tight installations, while optional fixed sheave inserts further increase the allowable deflection loads.
Key Features
• Four 20 mm alloy rotating sheaves
• Optimised for diverting lines from clutches and jammers
• Modifiable spacing via alloy top rail
• Reduced-friction tulip-shaped geometry
• Fixed sheave inserts available
• Standard and Low Profile versions
• Endless line-friendly design
• Titanium upgrade available
• Custom spacing and mixed sizes on request
Load Ratings – TSR20
• Individual sheave load: 1500 kg
• Combined sheave load: 750 kg × number of sheaves
• 30° deflected rope load: 3000 kg
• 60° deflected rope load: 1500 kg
Applications on Sailing Yachts
• Routing multiple halyards from clutches to winches
• Diverting high-load control lines when deck space is restricted
• Configurable sheave spacing for dense rope layouts
• Low-profile installations at mast bases or guide tunnels
Specifications
| Option* | Standard or Low Profile |
| Total width (mm) | 41 |
| Recommended line - Max Ø (mm) | 13 |
| Total height (mm) | 52 |
| Fixing hole spacing (mm) | 34 |
| Total length (mm) | 142 |
| Sheave Ø (mm) | 21 |
| Mounting fasteners | M8 CSK Head (supplied) |
| Sideplate material | Alloy |
| Sheave material | Alloy |
| SWL (kg) | 1500 |
| NBL (kg) | 3000 |
| Weight (g) | 637 |
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