Single block 22mm shackle | Master Windrider
Windrider is a series of ball-bearing blocks designed with competitive sailing in mind, but they are also a cost-effective alternative for the cruising sailor. The high-performance composite side plates are designed to ensure optimal performance even under high loads. The blocks have high weather resistance, which prevents them from failing under all types of sailing conditions and ensures long durability.
APPLICATION AREA
The single block is attached with a shackle and is suitable for, among other things:
- Mainsail systems, headsails, and spinnakers
- Halyards, vangs, and backstays
- Control lines for boats of all sizes
TECHNICAL SPECIFICATIONS
Dimensions and loads
- Sheave Ø: 22mm
- Max. line Ø: 6mm
- Weight: 19g
- Working load: 100kg
- Breaking load: 390kg
Material
- Sheave: self-lubricating acetal composite
- Ball bearings: self-lubricating acetal composite
- Side plates/frames: reinforced fiberglass-nylon composite with UV stabilization
- Shackle: Forged stainless steel of grade A4/AISI316
FREQUENTLY ASKED QUESTIONS (FAQ)
How do I choose the right size block?
The single block has a 22 mm sheave and fits lines up to 6 mm in diameter.
What is the difference between working load and breaking load?
The working load is the load the block is intended to be used with continuously. The breaking load is the load at which the block will fail and should never be used as a design value.
Does the block need to be lubricated?
No, the sheave and ball bearings are made of self-lubricating acetal composite. We recommend rinsing the block with fresh water after use in saltwater.