Spinlock TC50 – 3x2 Sheave Double Stack Organiser (Symmetric and Asymmetric)
The Spinlock TC50 3×2 Sheave Double Stack Organiser is a high-capacity, high-load organiser designed for yachts that must route multiple heavily-loaded lines within a restricted deck footprint. Using stacked rows of 50 mm alloy sheaves, this organiser provides six sheave positions arranged in two layers of three, making it suitable for dense halyard and control-line layouts on performance yachts and larger cruising yachts.
Each sheave rotates on plain bearings and is engineered for high-load operation. The lower row operates at full TC50 load limits, while the upper row is rated at a reduced Safe Working Load to maintain system efficiency and structural integrity when stacking organisers vertically.
The organiser is available in both Symmetric and Asymmetric variants, allowing installers to match the stacked organiser footprint to varying deck geometries. Asymmetric versions reduce overall width and weight, making them well suited for performance-focused or space-restricted installations.
Key Features
• Six 50 mm alloy sheaves arranged in two stacked rows (3 upper, 3 lower)
• Heavy-duty construction for high-load line diversion
• Plain-bearing sheaves for predictable performance under sustained loads
• Symmetric and Asymmetric variants for footprint optimisation
• Compatible with high-load halyards, reefing lines, and code sail systems
• Reduced footprint compared to two separate organisers
• Upper and lower rows rated independently for correct load planning
• Suitable for routing lines up to 14 mm diameter
• Shares geometry with TC50 single-layer organisers for system integration
Load Ratings – TC50 Double Stack (TC50/D)
Upper Row (3 sheaves):
• SWL per sheave: 1000 kg
• Total SWL (3 sheaves): 3 × 500 kg = 1500 kg
Lower Row (3 sheaves):
• SWL per sheave: 1500 kg
• Total SWL (3 sheaves): 3 × 750 kg = 2250 kg
Combined, the double-stack arrangement provides significant routing capacity while maintaining appropriate load separation between upper and lower rows.
Applications on Sailing Yachts
The TC50 3×2 Double Stack Organiser is ideal for yachts requiring compact, high-load line management where deck space is at a premium. Typical uses include:
• Diverting high-load halyards (mainsail, jib, gennaker, code sails) to winches
• Mixed-load routing where lower-row sheaves carry peak loads and upper-row sheaves carry secondary lines
• Complex reefing and tack-line arrangements on larger yachts
• Multi-line banks on performance cruisers and race yachts requiring vertical stacking
• Integrating high-load organiser systems using TC50 and TC50/D combinations
Designed for strength, compactness, and consistent high-load performance, the TC50 3×2 Double Stack Organiser is a robust solution for yachts demanding dense line routing without sacrificing load capability.
Spécifications
| Option* | Symmetric ou Asymmetric |
| Largeur totale (mm) | 52 |
| Cordage recommandé – Ø Max (mm) | 14 |
| Hauteur totale (mm) | 66 |
| L'espacement des trous de fixation (mm) | 56 |
| Longueur totale (mm) | 257 |
| Ø réas (mm) | 50 |
| Mounting fasteners | M8 CSK Head (supplied) |
| Sideplate material | Composite |
| Sheave material | Alliage |
| Charge de travail (kg) | 1000 |
| Charge de rupture (kg) | 2000 |
| Poids (g) | 965 |
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