Ronstan Orbit Blocks

Ronstan


Orbit Blocks™ represent the future of racing sailboat hardware. The choice of the world’s best racing sailors, they offer a no-compromise solution. Their flexible Dyneema® Link technology comes from the latest trends in development classes and grand prix ocean racing. The product of meticulous engineering, they deliver the ultimate in strength, weight saving, holding power and control. Advanced fiber and polymer technology that is up to ten times stronger than steel delivers a product that is more compact and lighter too. Through 3D modelling, Finite Element stress analysis and mould flow analysis, our engineers made sure that everything performs both in the laboratory and in the real world. Months of on-water testing by elite sailors pushed the product to their limits. After further strengthening and fine-tuning, they’re now ready for you to test for yourself.

Ronstan Orbit Series Blocks 20 and 30mm
Product No. Sheave Diameter Load Limit Weight Line Size
RF25109 20mm 250kg
(550lbs)
9g
(0.3oz)
6mm
(1/4in.)
RF35100 30mm 300kg
(600lbs)
32g
(1.1oz)
8mm
(5/16in.)
RF35101 30mm 300kg
(600lbs)
22g
(0.8oz)
8mm
(5/16in.)
RF35202 30mm 450kg
(990lbs)
56g
(2oz)
8mm
(5/16in.)
RF35212 30mm 450kg
(990lbs)
57g
(2oz)
8mm
(5/16in.)
RF35302 30mm 550kg
(1210lbs)
79g
(2.8oz)
8mm
(5/16in.)
RF35312 30mm 550kg
(1210lbs)
81g
(2.9oz)
8mm
(5/16in.)
RF35100D 30mm 300kg
(660lbs)
31g
(1.1oz)
8mm
(5/16in.)
RF35101D 30mm 300kg
(660lbs)
21g
(0.7oz)
8mm
(5/16in.)
RF35100A 30mm 300kg
(660lbs)
31g
(1.1oz)
8mm
(5/16in.)
RF35140 30mm 300kg
(660lbs)
33g
(1.2oz)
8mm
(5/16in.)
RF35141 30mm 300kg
(660lbs)
36g
(1.3oz)
8mm
(5/16in.)
RF35151 30mm 300kg
(660lbs)
21g
(0.7oz)
8mm
(5/16in.)
RF35284 30mm 300kg
(660lbs)
46g
(1.6oz)
8mm
(5/16in.)
RF35286 30mm 300kg
(660lbs)
63g
(2.2oz)
8mm
(5/16in.)
RF35322 30mm 550kg
(1210lbs)
130g
(4.6oz)
8mm
(5/16in.)
RF35332 30mm 550kg
(1210lbs)
132g
(4.7oz)
8mm
(5/16in.)
Ronstan Orbit Series Blocks 40 and 55mm
Product No. Sheave Diameter Load Limit Weight Line Size
RF45110 40mm 325kg
(715lbs)
44g
(1.6oz)
8mm
(5/16in.)
RF45130 40mm 325kg
(715lbs)
105g
(3.7oz)
8mm
(5/16in.)
RF45151 40mm 325kg
(715lbs)
32g
(1.1oz)
8mm
(5/16in.)
RF55110 55mm 500kg
(1100lbs)
88g
(3.1oz)
10mm
(3/8in.)
RF55210 55mm 750kg
(1650lbs)
172g
(6.1oz)
10mm
(3/8in.)
RF55310 55mm 750kg
(1650lbs)
244g
(8.6oz)
10mm
(3/8in.)
RF55410 55mm 750kg
(1650lbs)
316g
(11.2oz)
10mm
(3/8in.)
RF55151 55mm 750kg
(1650lbs)
70g
(2.5oz)
10mm
(3/8in.)
RF55510 55mm 750kg
(1650lbs)
101g
(3.6oz)
10mm
(3/8in.)
RF2454 - 325kg
(715lbs)
11g
(0.4oz)
-
RF2455 - 500kg
(1100lbs)
26g
(0.9oz)
-
Ronstan Orbit Series Blocks 60 and 75mm
Product No. Sheave Diameter Load Limit Weight Line Size
RF69100 60mm 2000kg
(4410lbs)
260g
(9.2oz)
12mm
(1/2in.)
RF69100L 60mm 800kg
(1760lbs)
133g
(4.7oz)
12mm
(1/2in.)
RF69110 60mm 2000kg
(4410lbs)
290g
(10.2oz)
12mm
(1/2in.)
RF69200 60mm 2450kg
(5400lbs)
436g
(15.4oz)
12mm
(1/2in.)
RF69108 60mm 800kg
(1760lbs)
133g
(4.7oz)
12mm
(1/2in.)
RF69109 60mm 1800kg
(3970lbs)
148g
(5.2oz)
12mm
(1/2in.)
RF69108R 60mm 2000kg
(4410lbs)
183g
(6.5oz)
12mm
(1/2in.)
RF69118R 60mm 2000kg
(4410lbs)
211g
(7.4oz)
12mm
(1/2in.)
RF69140 60mm 1800kg
(3970lbs)
398g
(14oz)
12mm
(1/2in.)
RF6914060 60mm 1800kg
(3970lbs)
398g
(14oz)
12mm
(1/2in.)
RF69151 60mm 2000kg
(4410lbs)
190g
(6.7oz)
12mm
(1/2in.)
RF79100 75mm 2450kg
(5400lbs)
340g
(12oz)
14mm
(9/16in.)
RF79110 75mm 2450kg
(5400lbs)
354g
(12.5oz)
14mm
(9/16in.)
RF79200 75mm 3400kg
(7500lbs)
547g
(20.3oz)
14mm
(9/16in.)
RF79108 75mm 2450kg
(5400lbs)
251g
(8.9oz)
14mm
(9/16in.)
RF79109 75mm 2450kg
(5400lbs)
226g
(0.8oz)
14mm
(9/16in.)
RF79108R 75mm 2450kg
(5400lbs)
226g
(0.8oz)
14mm
(9/16in.)
RF79118R 75mm 2450kg
(5400lbs)
305g
(10.8oz)
14mm
(9/16in.)
RF79140 75mm 1990kg
(4390lbs)
480g
(16.9oz)
14mm
(9/16in.)
RF79151 75mm 2450kg
(5400lbs)
269g
(9.5oz)
14mm
(9/16in.)
RF79500 75mm 2450kg
(5400lbs)
476g
(16.8oz)
14mm
(9/16in.)
Ronstan Orbit Series Blocks 100, 125 and150mm
Product No. Sheave Diameter Load Limit Weight Line Size
RF109151 100mm 7100kg
(15,650lbs)
447g
(15.8oz)
14mm
(9/16in.)
RF109500 100mm 3500kg
(7720lbs)
702g
(24.8oz)
14mm
(9/16in.)
RF129100 125mm 5000kg
(11,020lbs)
702g
(24.8oz)
16mm
(5/8in.)
RF129110 125mm 5000kg
(11,020lbs)
830g
(29.3oz)
16mm
(5/8in.)
RF129151 125mm 5000kg
(11,020lbs)
666g
(23.5oz)
16mm
(5/8in.)
RF159100 150mm 7000kg
(15,430lbs)
1384g
(48.8oz)
20mm
(3/4in.)
RF159110 150mm 7000kg
(15,430lbs)
1496g
(52.8oz)
20mm
(3/4in.)