Ronstan Series 40 Ball Bearing Orbit Block Rubber Stand-Up Boot
Shipping and Delivery
Enjoy free shipping on qualifying orders of $145 or more delivered within the 48 contiguous United States. Alaska, Hawaii, Puerto Rico, and other U.S. territories are excluded.
Delivery for qualifying free-shipping orders takes 8 to 10 business days.
Free shipping does not apply to:
- Orders containing only clearance items
- Customized special orders made to your detailed requirements
- Sails and boats
- Long tracks, spinnaker poles, whisker poles, and large tubes
- Oversized or heavy items, including items that require less-than-truckload (LTL) freight shipping
Standard Shipping
- UPS and FedEx Ground: Delivery usually takes 2 to 5 business days for in-stock orders.
- USPS: Allow an additional 3 business days beyond the standard shipping time.
- Saturday delivery: UPS and FedEx deliver on Saturdays only for overnight shipments sent on Friday. Additional charges may apply.
Oversized Items and Freight Shipping
Oversized items, such as whisker poles, spinnaker poles, and tracks longer than 8 feet, require freight shipping. The estimated shipping cost is $500, depending on the destination.
For freight deliveries, provide a commercial address, such as the marina, yacht club, or boatyard where your sailboat is located. The recipient must sign for the shipment upon delivery.
International Orders
International customers are responsible for all applicable import duties, fees, and taxes.
Ronstan Series 40 Ball Bearing Orbit Block Rubber Stand-Up Boot
Ronstan Series 40 Ball Bearing Orbit Block Rubber Stand-Up Boot
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.
Features:
- Ultra Lightweight.
- Low friction 2-stage Orbital ball bearing system.
- Highest working load in its class.
- Low profile and compact.
- High performance cleatingSwivel shackle head for unlimited block rotation -grade 316 stainless steel.
- Stainless steel shackle head for ultimate durability with harsh fixing points.
Specifications:
- Max. Rope diameter (in): 5/16
- Sheave diameter (in): 1 9/16
Materials:
- Ball Bearings - High compression stregnth carbon black Acetal. Stage 2 Bearing - Glass fibre reinforced, MoS2 impregnated Nylon. Frame/Cheeks - Toughened, glass fibre reinforced Nylon. Sheave - Carbon fibre reinforced, PTFE impregnated Nylon
Ronstan Series 40 Ball Bearing Orbit Block Rubber Stand-Up Boot
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.
Features:
- Ultra Lightweight.
- Low friction 2-stage Orbital ball bearing system.
- Highest working load in its class.
- Low profile and compact.
- High performance cleatingSwivel shackle head for unlimited block rotation -grade 316 stainless steel.
- Stainless steel shackle head for ultimate durability with harsh fixing points.
Specifications:
- Max. Rope diameter (in): 5/16
- Sheave diameter (in): 1 9/16
Materials:
- Ball Bearings - High compression stregnth carbon black Acetal. Stage 2 Bearing - Glass fibre reinforced, MoS2 impregnated Nylon. Frame/Cheeks - Toughened, glass fibre reinforced Nylon. Sheave - Carbon fibre reinforced, PTFE impregnated Nylon
