Description
Series 20 Ball Bearing Block – Triple – Becket – 2-Axis Shackle Head
Features:
- Low friction
- High static and dynamic load capacity
- Lightweight
- Precision molded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low friction
- Two-Way head can be fixed at 0° or 90°
Applications:
- Dinghy control lines
- Dinghy vangs
- Cunninghams
- Traveller controls
Materials:
- Stainless steel ball bearings
- UV Stabilized Acetal sheave
- Grade 316 stainless steel load strap and head fitting
- Impact and UV resistant, fiber reinforced Nylon cheeks
Specifications:
Sheave Ø:20mm(3/4″)
Max. Rope Ø:6mm(1/4″)
PinØ:4mm(5/32″)
M.W.L.:400kg(880lbs)
B. L.:850kg(1,870lbs)
Weight:64g(2.3oz)
![Ronstan Series 50 All Purpose Block - Triple [RF51300]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/ronstan-series-50-all-purpose-block-triple-rf51300.webp)
![Ronstan Series 40 Ball Bearing Block - Double - Swivel Head [RF40200]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/ronstan-series-40-ball-bearing-block-double-swivel-head-rf40200.webp)
![Ronstan Wire Block - Tubular Rivet Head w/Nylatron Sheave - 25mm (1") Sheave Diameter [RF418]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/ronstan-wire-block-tubular-rivet-head-w-nylatron-sheave-25mm-1-sheave-diameter-r.webp)
![Ronstan Kite Block - Black w /White Sheave (Pair) [RF13101-2]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/ronstan-kite-block-black-w-white-sheave-pair-rf13101-2.webp)
![Ronstan Series 15 Ball Bearing Utility Block - Single Block, Loop Head [RF15101]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/ronstan-series-15-ball-bearing-utility-block-single-block-loop-head-rf15101.webp)
![Ronstan Series 50 All Purpose Block - Double [RF51200]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/ronstan-series-50-all-purpose-block-double-rf51200.webp)
