Ronstan Series 40 All Purpose Block - Double Block - Full Swivel Head

Route sailing lines through the Ronstan Series 40 All Purpose double block for cruising or racing. Its freely swiveling head and self-lubricating sheaves suit sheet, halyard and control-line duties under both changing loads and sustained tension.

Key features

• Self-lubricating acetal sheaves keep maintenance demands low.
• Polished stainless steel races support operation under dynamic and high static loads.
• A freely rotating head lets the block swivel as the line direction changes.
• The slotted shackle pin helps prevent lines from fouling.
• UV-resistant sheaves and impact- and UV-resistant cheeks provide durability in outdoor use.

Specifications

• Series: 40 All Purpose
• Configuration: Double block, full swivel head
• Head post: Two way
• Sheave material: UV-stabilized acetal
• Cheek material: Fiber-reinforced nylon
• Bearing race material: Grade 316 stainless steel
• Load strap and head fitting material: Grade 316 stainless steel
• Sheave diameter: 40 mm (1-9/16 inches)
• Maximum rope diameter: 10 mm (7/16 inch)
• Pin diameter: 5 mm (3/16 inch)
• Maximum working load: 600 kg (1,320 lb)
• Breaking load: 1,200 kg (2,650 lb)
• Weight: 135 g (4.8 oz)

Good to know

Listed applications include mainsheet, halyard, vang and spinnaker control lines on off-the-beach catamarans, one-design classes and sportsboats up to 8 m (26 feet).