Single ball bearing block - Sheave 25 - Upright lead block
Part #71121
Single ball bearing block - Sheave 25 - Upright lead block
Part #71121
Description
Complete range of ball bearing blocks
Modern design
Innovative design with two lateral races of ball bearings
Smooth running for low load adnhigh speed action
Under high load the hub runs on stainless steel bush which allows the sheave to run freely
Light cheeks protecting the sheave
Wide choice of fastenings thanks to the universal head
The sheave can be removed for maintenance
Modern design
Innovative design with two lateral races of ball bearings
Smooth running for low load adnhigh speed action
Under high load the hub runs on stainless steel bush which allows the sheave to run freely
Light cheeks protecting the sheave
Wide choice of fastenings thanks to the universal head
The sheave can be removed for maintenance
Applications
For dinghies and catamarans applications: genoa sheets, boom vang, footmast block, masthead block…
For larger yachts: barber-hauler, various, control lines…
For larger yachts: barber-hauler, various, control lines…
Technical information
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Materials
Grade 316L stainless steel head
Delrin® ball bearings
configuration
Grade 316L stainless steel load straps
Polycarbonate cheeks
Composite sheave - Rope size Pour cordage de 6 à 8 mm
- Length (mm) 39
- Width (mm) 32
- Thickness (mm) 42
- Sheave diameter (mm) 25
- Working load (kg) 320
- Breaking load (kg) 600
- Weight (g) 32
Caption
Working load (WL) : for nautical applications
Working Load Limit (WLL): for industrial applications only.
The safety factor is 5 times the breaking load.
WLL = Breaking load / 5
