Ronstan Series 40 Ball Bearing Block – Single – Universal Head

Series 40 Ball Bearing Block – Single – Universal Head

Sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.Captive Lock™ universal head can be fixed in either of two planes, or free to swivel as required.

Features:

• Low friction Acetal or Torlon® bearing system
  
• Lightweight
  
• Cheek cut-outs for easy bearing maintenance
  
• Captive Lock™ universal head
  
• Slotted pin shackle eliminates fouled lines

Applications:

• Mainsheet
  
• Halyard
  
• Vang
  
• Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8M(26′)

Materials:

• U.V. Stabilized Acetal sheaves
  
• Acetal ball bearings
  
• Impact and U.V. resistant, fiber reinforced Nylon cheeks
  
• Grade 316 stainless steel load strap and head fitting

Specifications:
Sheave Ø: 40mm(1-9/16″)
Max. Rope Ø: 10mm(7/16″)
Pin Ø: 5mm(3/16″)
M.W.L.: 350kg(770lbs)
B. L.: 1,000kg(2,200lbs)
Weight: 70g(2.5oz)