Ronstan Series 55 Orbit Block Upright Lead
Pickup available at 1830 East Interstate 30
Usually ready in 24 hours
Shipping and Delivery
Free shipping for orders of $98 or more (US Continental)
- Free shipping for orders of $750 or more (International)
- Add 3 business days to the standard shipping time for USPS deliveries.
- UPS and FedEx Ground usually take 2 to 5 business days for in-stock orders.
- UPS and FedEx deliver on Saturdays only for Friday overnight shipments, which may incur an extra
charge. - Orders that apply for free shipping will be delivered between 8 and 10 business days.
- International customers will be responsible for any applicable import duties,fees, or taxes.
- Oversized items like whisker poles, spinnaker poles, and tracks over 7 feet require freight shipping, with an estimated cost of $500 depending on the destination.These orders must be delivered to a
commercial address, such as a marina, yacht club, or boatyard where your sailboat is located.
A recipient must be present to sign for the delivery upon arrival,For more info, Click Here.
Ronstan Series 55 Orbit Block Upright Lead
Ronstan Series 55 Orbit Block Upright Lead
Lightweight
Kilogram for kilogram of working load, BB and RT Orbit Blocks are the world’s lightest. The unique orbital design allows the bearing to only be in the active areas of the floating sheave. This minimises the mass of the inactive return race and hub. Weight and bulk are further reduced in the different block configurations. The ball bearing single and becket block has a through-sheave becket arrangement. The result The lowest weight possible. Multi-sheave blocks have only single intermediate cheeks and an ultra-light and efficient head arrangement. This gives a 30% weight saving advantage over the nearest competitor. Other brands just link together their single blocks. This results in unnecessary double cheeks between each sheave, held together by a heavy steel channel across the top of the block
Highest working load in its class
The orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximises load performance. The proven Ronstan 2-stage bearing system features high compression grade acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range. The floating sheave and bearing system is supported by a fibre-reinforced load frame. The design was computer modelled to be stress optimised. The Dyneema Link is produced from FSE Robline SK75 fibre, which is 10 times stronger and lighter than steel, and provides the final connection from the block to the load point
Features:
- Ultra Lightweight.
- Low friction 2-stage Orbital ball bearing system.
- Highest working load in its class.
- Low profile and compact.
- High performance cleating
Specifications:
- Max. Rope diameter (in): 3/8
- Sheave diameter (in): 2 5/32
Materials:
Ball bearings - High compression strength carbon black Acetal. Stage 2 bearing - Carbon fibre reinforced, PTFE impregnated Nylon. Frame/Cheeks - Toughened, glass fibre reinforced Nylon. Rope Link: UV stabilised, multi-strand impregmented SK75 Dyneema Sheave: Carbon fibre reinforced, PTFE impregnated Nylon. Ball Bearings: High compresssion strength carbon black Acetal. Stage 2 Bearing: Carbon fibre reinforced, PTFE impregnated Nylon
