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Series 40 Ball Bearing Orbit Block - Single - Stand-Up Swivel Head
Features:
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 minimizes 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 It's Class
The orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximizes 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 fiber-reinforced load frame. The design was computer modeled to be stress optimized.
Recommended fasteners - 2 x 4mm (5/32") countersunk head screws
Applications:
Materials:
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200 14th Avenue Southeast, St. Petersburg, FL 33701
7C San Bartola Drive, Saint Augustine, FL 32086




We bought these boots in 2022, and are buying new ones 3 years later. We love the design and the fact that they are easy to remove for inspection of the rig.
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Complete upgrade of my Irwin 54 Sloop electrical system –
Phase 1 – Remove 9KW generator, install 30KW LifePO4 battery system, inverter chargers, battery chargers, etc. wired for worldwide shore power capability to ABYC standards. Installation made possible with guidance and support from Andre Cormier and The Yacht Rigger.
I was amazed with the product especially, the attention to detail. I was also very pleased with the help and recommendations I received from Chris Wilcher. He made the purchase very easy.
I was very pleased with the product especially, the attention to detail. I was also pleased with the support I received from Chris Wilcher. He made the purchase very easy.
The Z Bar Class T Fuse Holder solves a real problem, and does so in a simple and affordable way.

