Ronstan Series 30 Ball Bearing Orbit Block - Stand Up Swivel for Marine Rigging

Series 30 Ball Bearing Orbit Block - Stand Up Swivel

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: 33g(1.2oz)

The Ronstan Series 30 Ball Bearing Orbit Block with Stand Up Swivel is engineered for high performance marine applications where strength and weight savings are critical. Crafted from durable, all-composite reinforced polymers, this orbit block offers an exceptional strength-to-weight ratio, making it ideal for use on dinghies up to 16 feet and small to medium-sized yachts. Its precision ball bearing design ensures minimal friction during operation, contributing to smoother sailing and easier handling of control lines. The compact, low-profile construction allows for versatile installation options in tight spaces while maintaining secure attachment points for various rigging needs.
The sheave is made from high compression strength carbon black acetal, capable of handling ropes up to 5/16 inch in diameter. The frame and cheeks are constructed from toughened, glass fiber-reinforced nylon, providing enhanced durability and resistance to harsh marine environments. The link features UV-stabilized, multi-strand impregnated SK75 Dyneema, which ensures reliable performance over time. With a maximum working load of 660 pounds and a breaking load of 1,320 pounds, this orbit block is suitable for mainsheet, spinnaker sheet, halyard, vang, backstay, and control line applications on boats up to 16 feet.
At just 1.2 ounces, the Ronstan Series 30 orbit block combines lightweight design with high load capacity, making it an excellent choice for sailors seeking reliable, low-friction hardware that does not compromise on strength. Its secure attachment options and compact form factor facilitate easy integration into various rigging configurations, ensuring optimal performance and safety. Whether for recreational dinghies or small racing yachts, this orbit block provides a dependable solution for demanding sailing conditions, backed by Ronstan’s reputation for quality and innovation.

Features:

• Lightweight design for easy handling and installation

• Highest working load in its class for reliable performance

• Secure and versatile attachment options

• Low profile and compact for installation in tight spaces