Ronstan Marine Systems DivisionRonstan Marine Systems Division
   
Product No.
Desc.
Sheave ØMax. Rope ØMax. Cable ØFastener ØM.W.L.B. L.Weight  
  mmmmmmmmkgkgg  
 RF2379 RF2379 > Single upright 

13

5

-

4.0

250

500

20

 
 RF568 RF568 > Single upright, removable sheave 

19

5

-

5.0

250

550

20

 
 RF569 RF569 > Single upright 

19

8

-

5.0

250

550

20

 
 RF917 RF917 > Single upright 

19

8

-

5.0

250

550

20

 
 RF453 RF453 > Single, upright lead 

22

3

3

5.0

160

350

30

 
 RF919 RF919 > Single upright, removable sheave 

29

6

-

5.0

600

1200

50

 
 RF20171 RF20171 > Single upright 

20

6

-

4.0

250

550

18

 
 RF20174 RF20174 > Single pivoting 

20

6

-

4.0

250

550

30

 
 RF30171 RF30171 > Single upright 

30

8

-

5.0

300

750

30

 
 RF30174 RF30174 > Single pivoting 

30

8

-

5.0

300

650

50

 
 RF50171 RF50171 > Single, upright lead 

50

12

-

6.0

500

1500

116

 
 RF50171HL RF50171HL > Single upright 

50

12

5

6.0

800

1500

115

 
 RF68174 RF68174 > Pivoting low lead 

60

14

-

6.0

1500

3000

341

 
 RF62174 RF62174 > Pivoting low lead, ratchet 

60

10

-

5.0

250

1370

147

 
 RF62175 RF62175 > Pivoting low lead, ratchet with cleat 

60

10

-

5.0

250

1370

285

 
 RF78174 RF78174 > Pivoting low lead 

75

14

-

6.0

1750

3500

470

 
 RF72174 RF72174 > Pivoting low lead, ratchet 

75

12

-

6.0

420

1370

270

 
 RF72175 RF72175 > Pivoting low lead, ratchet with cleat 

75

12

-

6.0

420

1370

405

 

*Load ratings vary depending on mounting and application.
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Range Information
Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers.
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