Ronstan Series 30 Ball Bearing Orbit Block - Cheek for Dinghies and Small Yachts

Series 30 Ball Bearing Orbit Block - Cheek

Ball Bearing Orbit Blocks boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options.
Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fiber-reinforced composites in the block head, cleat arms and beckets.

Features:

• Lightweight
  
• Highest working load in its class
  
• Secure, versatile and secure attachement
  
• Low profile and compact

Applications:

• Mainsheet systems and spinnaker sheets on dinghies to 5M(16')
  
• Halyard, vang and backstay applications on boats to 5M(16')
  
• Control line applications on larger yachts

Materials:

• 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:
Sheave : 30mm(1-3/16")
Max. Rope : 8mm(5/16")
M.W.L.: 300kg(660lbs)
B. L.: 600kg(1,320lbs)
Weight: 21g(0.7oz)

The Ronstan Series 30 Ball Bearing Orbit Block - Cheek is designed for lightweight yet high-strength performance in sailing applications. Crafted from advanced composite reinforced polymers, this orbit block offers an optimal balance of durability and weight savings. Its precision engineering incorporates multiple ball bearings to minimize friction, ensuring smooth operation with less effort. The use of fiber-reinforced composites in the block head, cleat arms, and beckets further reduces weight without compromising strength, making it ideal for demanding sailing conditions on boats up to 16 feet long. This versatile component supports mainsheet, spinnaker sheet, halyard, vang, and backstay applications, as well as control lines on larger yachts, providing reliable performance across various rigging setups. Constructed with high compression strength carbon black Acetal for the sheave and ball bearings, toughened glass fiber reinforced nylon for the frame and cheeks, and UV stabilized Dyneema for the link, the Ronstan Series 30 Orbit Block ensures longevity and resistance to harsh marine environments. Its compact, low-profile design is easy to install and offers secure attachment points, accommodating ropes up to 5/16 inch in diameter. With a maximum working load of 660 pounds and a breaking load of 1,320 pounds, this orbit block is engineered to handle demanding loads while maintaining a lightweight profile. Whether used on dinghies or larger yachts, the Ronstan Series 30 offers dependable and efficient rigging support for sailors seeking optimal performance and durability.

Features:

• Lightweight construction utilizing all-composite reinforced polymer materials

• Highest working load in its class for reliable performance

• Secure and versatile attachment options for various rigging setups

• Low profile and compact design for easy installation and minimal obstruction