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Series 25 Ball Bearing Orbit Block™ - Becket & Swivel Shackle
Single sheave ball bearing block with becket hub and swivel shackle head.
Series 25 Ball Bearing Orbit Blocks™, delivering superior strength, reduced weight, and exceptional performance for high-demand dinghy and small boat applications.
Designed with competitive sailors and performance boats in mind, these compact 25mm blocks are engineered to achieve the highest possible strength-to-weight ratio. Featuring Ronstan’s renowned high compression strength acetal bearing system, the Series 25 BB Orbit Blocks™ are a lightweight yet durable solution, ideal for control line systems such as mainsheet and spinnaker sheet turning blocks, cunninghams, and cascading vangs on dinghies up to 4 meters.
Each block has a stainless steel hub for versatile lashing attachments and through-sheave becket functionality, making them adaptable to a wide range of rigging setups. The hub accommodates up to 4mm (5/32") lashing and ensures maximum efficiency without compromising reliability.
Features:
- 2-stage ball bearing system.
- Suits up to 8mm (5/16”) lines.
- Hollow hub for becket take-off.
- Lashing blocks suit up to 4mm (5/32”) lashing.
Specifications:
- Max. Rope diameter (in): 5/16
- M.W.L. (lb): 500
- Sheave diameter (in): 1
- B.L. (lb): 990
- Weight (oz): 0.6
Applications:
- Mainsheet and spinnaker sheet turning blocks on dinghies to 4m (13ft).
- Control lines.
- Cascading vangs.
- Leech lines & cunninghams.
Materials:
- Frame/cheeks: Toughened, glass fibre reinforced nylon.
- BB Sheave and balls: high compression strength acetal.
FAQs
Product & Usage
1. Is your gear authentic and warranty-backed?
Yes — we are an authorized US dealer for 300+ marine electronics brands. Every order ships with the manufacturer’s full warranty.
2. Are these products beginner-friendly?
Yes. Our products are designed for both seasoned boaters and first-time owners. Each unit ships with a manufacturer manual, and we’re happy to answer setup questions over email.
3. Are these products built for marine conditions?
Yes. Marine electronics are engineered for saltwater spray, vibration, and weather. Check the product specs for IPX waterproof rating and saltwater certifications.
Maintenance & Accessories
1. What maintenance does marine electronics require?
Rinse with fresh water after saltwater exposure, store in a dry place, and follow your manufacturer’s cleaning and storage instructions.
2. Can I buy replacement parts and accessories separately?
Yes — we carry replacement parts, mounts, transducers, cables, and accessories for the brands we stock.
3. Do you provide product manuals or installation guides?
Every product ships with the original manufacturer’s manual. Digital copies and detailed installation guides are typically available on the brand’s website.
Warranty & Guarantee
1. Does my purchase include a warranty?
Yes — every order includes the full manufacturer warranty. Coverage length varies by brand (typically 1–3 years for Garmin, Lowrance, Raymarine, Simrad, Humminbird, Furuno, and others).
2. How do I register for warranty coverage?
Register directly with the manufacturer using your unit’s serial number. Manufacturer registration is the fastest path to warranty support if you ever need it.
3. What does the manufacturer warranty cover?
Defects in materials and workmanship under normal use. Damage from impact, improper installation, or saltwater corrosion (without protection) may be excluded. Check brand-specific terms in your unit’s documentation.
4. Can I extend the warranty?
Some manufacturers offer extended-coverage programs through their registration portals. We don’t sell third-party warranty programs.
Purchasing & Support
1. How fast does my order ship?
Orders placed before 4pm EST Monday–Friday ship the same business day via UPS from our NJ or FL warehouses. Continental US delivery typically takes 3–7 business days for Economy.
2. Do you offer bulk or fleet pricing?
Yes — we offer volume pricing for fleet operators, marinas, dealers, and commercial customers. Email support@marineelectronicsdepot.com with your needs.
3. How can I contact support?
Email support@marineelectronicsdepot.com or call during business hours (Mon–Fri 9am–5pm ET). We’re happy to help with pre-purchase questions, order status, or post-sale support.
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