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 3396 
45 mm Blocks
About Black Magic Air blocks: see feature pages at beginning of this section.
Plastic sheaves are provided as stock in 45mm and 57mm block assemblies for general purpose applications using line near max diameter. 
Aluminum sheaves are available for use with small line diameter, highly loaded, or static applications. Sheaves may be purchased separately 
or as part of a block assembly. Contact Harken for AL aluminum sheave or block assemblies.
*Includes padeye. 5 mm (#10) fasteners, fastener circle: 30 mm (1 3/16").   **Loop not included.    Torlon is a registered trademark of Solvay Advanced Polymers, L.L.C.
Part
No.
Description
Sheave
Ø
Length
Weight
Shackle pin
Ø
Max line
Ø
Maximum
working load
Breaking
load
in
mm
in
mm
oz
g
in
mm
in
mm
lb
kg
lb
kg
 Single loop** 
 1 ¾ 
 45 
 2 1/2
63
 2.01
 57
 
 
3/8
 10
1653
750
3306
1500
 Double loop**
 1 ¾  
 45 
 2 1/2
63
 3.63
 103
 
 
3/8 
 10 
1653
750
3306
1500
 Single/swivel  
 1 ¾  
45 
 3 15/16
 100
 2.79
 79
3/16
 5 
3/8
 10 
1653
750
3306
1500
 Single/swivel/becket 
 1 ¾  
 45 
4 3/4 
 120
 3.39 
 96
3/16
 5 
 3/8 
 10 
1653
750
3306
1500
 Double/swivel 
 1 ¾  
 45 
 4  3/16 
 106
 6.88
 195
1/4 
 6
3/8
 10
2425
1100
4850
2200
 Double/swivel/becket 
 1 ¾ 
 45 
 3 7/8 
 99 
 7.27 
 206 
1/4 
 6
3/8
 10 
2425
1100
4850
2200
 Single stand-up* 
 1 ¾  
 45 
 3 11/16 
 94 
3.95 
 112
 
3/8 
 10
1653
750
3306
1500
 Single runner
 1 ¾ 
 45 
 2 13/16 
 71 
 2.89 
 82 
 5/16 
 8 
3/8 
 10 
1653
750
3306
1500
Part no. 3433
The 45mm Black Magic blocks 
can be attached with the 
190mm soft-attach loop with 
cinch in 3mm line diameter.
MOUNT WITH
SOFT ATTACHMENT

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