Ronstan Marine Systems DivisionRonstan Marine Systems Division
 
Roller Ball Bearing Blocks
 

Series 75mm

Range Information | Applications | Materials | Related Items

Smart Features
  •  High static and dynamic load capacity
  •  Minimal friction across the working load range
  •  Reliable, trouble-free performance
  •  Simplicity of design and construction facilitate maintenance and servicing

 

   
Product No.
Desc.
 Sheave ØMax. Rope ØMax. Cable ØPin ØM.W.L.B. L.Weight  
  mmmmmmmmkgkgg  
 RF71100 RF71100 > Single, AP sheave/bearing 

75

14

-

8.0

1500

3980

441

  
 RF78100 RF78100 > Single 

75

14

-

8.0

1990

3980

475

  
 RF78108 RF78108 > Single, halyard 

75

14

-

10.0

1660

3320

298

  
 RF78110 RF78110 > Single, becket 

75

14

-

8.0

1990

3980

530

  
 RF78140 RF78140 > Single, stand-up 

75

14

-

-

1990

3980

576

  
 RF78202 RF78202 > Double, non-swivel head 

75

14

-

-

1990

3980

640

  

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Range Information
These blocks have the strength and durability to meet the requirements of racing and cruising. Block cheeks are manufactured from the highest quality alloy for maximum strength. The cut-away design minimises weight and allows easy fresh water rinsing of salt and debris from the bearings. Blocks can be disassembled for servicing or customisation.

  
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Applications
  • Mainsheet on boats to 14m (46ft)
  • Halyard and spinnaker sheets on boats to 15m (50ft)
  • Backstay applications on boats to 11m (36ft)
  • General control line applications on larger yachts
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Materials
  • Alloy cheek plates
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