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Description
Series 40 Ball Bearing Block - Triple - Swivel Head
Features:
- Low friction Acetal or Torlon® bearing system
- Lightweight
- Cheek cut-outs for easy bearing maintenance
- Features a swivel shackle head for full 360° rotation
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.
Applications:
- Mainsheet
- Halyard
- Vang
- Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8m (26ft)
Materials:
- Acetal ball bearings
- UV stabilised Acetal sheave
- Grade 316 stainless steel load strap and head fitting
- Impact and UV resistant, fiber reinforced Nylon cheeks
Accessories
No accessories listed for this product.
Specifications
| SKU | RF40300 |
| UPC | 9316800255351 |
| Brand | Ronstan |
| Category | Sailing |
| Country of Origin | — |
| Weight | 0.43 |
| Dimensions | 4 x 3 x 2 |
| Status | Active |
| Last Synced | 10/5/2026, 2:05:08 AM |
Compliance & Shipping
Returnable
Product Literature
No literature or manuals available for this product.
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Frequently Bought Together
Compare Key Features
| Feature |  Ronstan Series 40 Ball Bearing Block - Triple - Swivel Head CURRENT |  Ronstan Series 30 Ball Bearing Orbit Block - Triple - Becket |  Barton Marine Ratchet Block - 55mm |  Harken 16mm Block |  Harken 40mm Carbo Block 90° Fixed Head |
|---|---|---|---|---|---|
| Price | $91.54 | $57.81 | $111.66 | $17.21 | $41.35 |
| Brand | Ronstan | Ronstan | Barton Marine | Harken | Harken |
| Condition | New | New | New | New | New |
| Availability | In Stock | In Stock | In Stock | In Stock | In Stock |
| Weight | 0.43 | 0.19 | 0.3 | 0.1 | 0.11 |
| Dimensions | 4 x 3 x 2 | 4 x 2 x 2 | 6 x 3 x 2 | 3 x 2 x 1 | 5 x 3 x 1 |
| SKU | RF40300 | RF35312 | 90500 | 404 | 2659 |
| Country | — | INDONESIA | — | UNITED STATES | UNITED STATES |
| View Item | View Item | View Item | View Item | View Item |
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Frequently Asked Questions
Price
$91.54