Ronstan Series 40 Orbit Cheek Block - 40 mm (1 9/16") - RF46151

Ronstan's Ratchet Orbit Blocks™ are specifically designed for racing sailboats and provide the highest holding power available on the market. The Series 40 delivers up to 14:1 holding power and features Generation 2 of Ronstan's patented sheave cross-hole geometry and straight resistance faces which both distribute the load and minimize rope wear.

Features:

• Recessed underside to suit curved mounting surface
• Fully automatic, load sensing ratchet engagement
• Ultra lightweight, low profile and compact
• Up to 14:1 holding power - the highest available!
• Low friction 2-stage Orbital ball bearing system
• Highest working load in its class
• Smooth easing of sheets
• Low mounting points for maximum strength
• Clockwise rotation
• Applications:
  • Mainsheet systems on dinghies, sportsboats and small keelboats to 9m (30ft)
  • Spinnaker sheets on dinghies, sportsboats and small keel boats to 9m (30ft)
  • Halyard, Vang and Backstay application on boast to 8m (26ft)
  • Control line applications on larger yachts

Specifications:

• Safe working load: 385 lbs (175 kg)
• Breaking load: 1,100 lbs (500 kg)
• Weight: 1.3 oz (36g)
• Sheave diameter: 1 9/16" (40 mm)
• Maximum line size: 5/16" (8 mm)
• Materials:
  • Ball bearings - High compression strength carbon black Acetal
  • Stage 2 bearing - Carbon fiber reinforced, PTFE impregnated Nylon
  • Frame/Cheeks - Toughened, glass fiber reinforced Nylon
• Recommended fasteners: 2 x 4 mm (5/32") counter sunk head screws