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Description
Series 30 Ball Bearing Orbit Block™ - Double
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:
Applications:
Materials:
Specifications:
Sheave Ø: 30mm(1-3/16")
Max. Rope Ø: 8mm(5/16")
M.W.L.: 450kg(990lbs)
B. L.: 900kg(1,980lbs)
Weight: 50g(1.7oz)
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.: 450kg(990lbs)
B. L.: 900kg(1,980lbs)
Weight: 50g(1.7oz)
Accessories
No accessories listed for this product.
Specifications
| SKU | RF35202 |
| UPC | 9316800404971 |
| Brand | Ronstan |
| Category | Sailing |
| Country of Origin | INDONESIA |
| Weight | 0.13 |
| Dimensions | 4 x 2 x 1 |
| Status | Active |
| Last Synced | 10/7/2026, 2:04:26 AM |
Compliance & Shipping
Returnable
Product Literature
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Frequently Bought Together
Compare Key Features
| Feature |  Ronstan Series 30 Ball Bearing Orbit Block™ - Double CURRENT |  Ronstan Series 30 Ball Bearing Orbit Block - Triple - Becket |  Harken 57mm Carbo Air Block w/Swivel |  Barton Marine Ratchet Block - 55mm |  Harken 16mm Block |
|---|---|---|---|---|---|
| Price | $40.94 | $57.81 | $53.93 | $111.66 | $17.21 |
| Brand | Ronstan | Ronstan | Harken | Barton Marine | Harken |
| Condition | New | New | New | New | New |
| Availability | In Stock | In Stock | In Stock | In Stock | In Stock |
| Weight | 0.13 | 0.19 | 0.3 | 0.3 | 0.1 |
| Dimensions | 4 x 2 x 1 | 4 x 2 x 2 | 6 x 3 x 1 | 6 x 3 x 2 | 3 x 2 x 1 |
| SKU | RF35202 | RF35312 | 2600 | 90500 | 404 |
| Country | INDONESIA | INDONESIA | UNITED STATES | — | UNITED STATES |
| View Item | View Item | View Item | View Item | View Item |
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Frequently Asked Questions
Price
$40.94