Ronstan Series 30 Ball Bearing Orbit Block - Double

Enhance your boat’s efficiency and reliability with the Series 30 Ball Bearing Orbit Block™ - Double. Engineered with cutting-edge composite reinforced polymers and precision ball bearings, this orbit block offers unmatched strength and minimal friction, ensuring smooth and durable performance for all your marine applications.

Features

• Lightweight Construction: Reduces overall system weight without compromising strength.
• Superior Load Capacity: Delivers the highest working load in its class, handling up to 450kg (990lbs).
• Versatile Attachment: Multiple attachment options provide secure and flexible installation.
• Compact Design: Low profile ensures it fits seamlessly into various setups.

Applications

• Mainsheet Systems: Ideal for dinghies up to 5 meters (16 feet).
• Halyard, Vang, and Backstay: Perfect for managing lines on boats up to 5 meters (16 feet).
• Control Lines: Suitable for larger yachts, ensuring precise sail control.

Materials

Component	Material
Sheave	High compression strength carbon black Acetal
Ball Bearings	High compression strength Acetal
Frame/Cheeks	Toughened, glass fiber reinforced Nylon
Link	UV stabilized, multi-strand impregnated SK75 Dyneema®

Specifications

Specification	Details
Sheave Diameter	30mm (1-3/16")
Max. Rope Diameter	8mm (5/16")
Maximum Working Load (M.W.L.)	450kg (990lbs)
Breaking Load (B.L.)	900kg (1,980lbs)
Weight	50g (1.7oz)

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Learn More

Orders of physical products placed by 3 PM EST M-F typically ships the same day, if all requested items are in stock. Weekend orders will typically ship on Monday.

Shipping takes 2-7 days.

We currently ship to the Contiguous 48 States.

Life of Sailing merch is custom made for the customer after an order is placed. Total turnaround is typically 7-14 days from order to doorstep.