Ronstan Series 30 Ball Bearing Orbit Block - Cheek [RF35151]

Description

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

Series 30 Ball Bearing Orbit Block™ - CheekBall Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available. This is achieved... Read more

SKU: CWR-55176
Barcode: 9316800404964

14 in stock

$22.65$20.50

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    • Shipped today? Order within: Jun 04, 2026 15:00:00 -0400

    Description

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

    Reviews

    Ronstan Series 30 Ball Bearing Orbit Block - Cheek [RF35151]

    Ronstan Series 30 Ball Bearing Orbit Block - Cheek [RF35151]

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