Ronstan High-Load Blocks

Ronstan

Ronstan's Ball Bearing blocks have been conceived and engineered for the demands of competitive sailing. Used on boats of all sizes for sheet, fine tune and control line applications they utilise a highly efficient, low friction bearing systems for optimum sheeting and trimming performance.

Ronstan High-Load Blocks 20 and 30mm
Product No. Sheave Diameter Load Limit Weight Line Size
RF20101HL 20mm 270kg
(610lbs)
14g
(0.5oz)
6mm
(1/4in.)
RF30171 30mm 300kg
(660lbs)
30g
(1.1oz)
8mm
(3/16in.)
RF30174 30mm 300kg
(660lbs)
50g
(1.8oz)
8mm
(5/16in.)
Ronstan High-Load Blocks 40 and 50mm
Product No. Sheave Diameter Load Limit Weight Line Size
RF40100HL 40mm 500kg
(1100lbs)
69g
(2.4oz)
10mm
(3/8in.)
RF50100HL 50mm 800kg
(1760lbs)
117g
(4.1oz)
12mm
(1/2in.)
RF50171HL 50mm 800kg
(1760lbs)
115g
(4.1oz)
12mm
(1/2in.)