251
Length
HYCBS11
HYCBS13
HYCBS16
HYCBS19
HYCBS22
HYCBB16
HYCBB19
HYCBB22
HYCBD11
HYCBD13
HYCBD16
HYCBD19
HYCBD22
Cylinder Blocks & Toggles
Rod End Blocks
Cylinders can be set up to use a reverse purchase to move loaded lines 
controlling functions such as Cunninghams, stay deflectors, travelers, and 
athwartship jib systems. Harken offers a variety of blocks to help facilitate differ-
ent reverse purchase arrangements. Blocks are rigid when mounted to the rod. 
They are available in single, single with becket, and double versions for reverse 
purchases from 1:2 to 1:4. Custom lashed on V block options are available 
upon request.
Eye/Jaw Toggles
An eye/jaw toggle provides a cylinder with two axis points of articulation to 
reduce wire, rod, and end fitting fatigue. Toggles are available in 11 - 44 mm 
(7/16" - 1 3/4") to match cylinder pin sizes. Eye/jaw toggles are commonly sold 
with Harken integral backstay cylinders as well as standard cylinders used for 
standing rigging.
HYDRAULICS
Q&A
WHY AREN'T THE SHEAVES 
ON YOUR CYLINDER ROD END 
DOUBLE BLOCKS STACKED? 
Although slightly longer than 
blocks with stacked sheaves, 
our reverse purchase rod end 
blocks allow the sheaves to align 
the load directly with the cylinder, 
preventing premature wear and 
seal failure.
Maximum working load is equal to maximum pull force for appropriately sized cylinder. 
Eye/Jaw Toggles
EYE/JAW TOGGLES
Part
No.
Jaw/pin Ø
Length
Fits bore/rod Ø
in
mm
in
mm
mm
 HYHTEJS11 
 7/16 
 11.1 
 2.0 
 50.8 
 25/11 
 HYHTEJS13 
 1/2 
 12.7 
 2.2 
 55.9 
 35/13 
 HYHTEJS16 
 5/8 
 15.9 
 2.5 
 63.5 
 40/16 & 45/16 
 HYHTEJS19 
 3/4 
 19.1 
 2.9 
 73.7 
 55/19 
 HYHTEJS22 
 7/8 
 22.2 
 3.3 
 83.8 
 65/22 
 HYHTEJS25 
 1 
 25.4 
 3.7 
 94 
 75/25 
 HYHTEJS29 
 1 1/8 
 28.6 
 4.1 
 104.1 
 80/25 
 HYHTEJS32 
 1 1/4 
 31.8 
 4.5 
 114.3 
 90/32 
 HYHTEJS35 
 1 3/8 
 34.9 
 5.6 
 142.2 
 100/32 
 HYHTEJS38 
 1 1/2 
 38.1 
 5.7 
 144.5 
 115/35 
 HYHTEJS44 
 1 3/4 
 44.5 
 7.2 
 182.6 
 130/38 
Rod End Blocks
*Can be used as becket block.
Part
No.
Description
Fits rod
Ø
Rod thread 
size
Weight
Sheave
Ø
Length
Reverse
purchase
mm
UNF A
kg
in
mm
in
mm
 HYCBS11  Single 
 11 
 7/16-20 
0.44
 2.0 
 52 
 4.0 
 101 
 1:2 
 HYCBD11  Double* 
 11 
 7/16-20 
0.56
 2.0, 1.3  52, 33 
 5.5 
 139 
 1:3, 1:4 
 HYCBS13  Single 
 13 
 1/2-20 
0.44
 2.0 
 52 
 4.0 
 101 
 1:2 
 HYCBD13  Double* 
 13 
 1/2-20 
0.55
 2.0, 1.3  52, 33 
 5.5 
 139 
 1:3, 1:4 
 HYCBS16  Single 
 16 
 5/8-18 
0.80
 3.2 
 82 
 5.2 
 132 
 1:2 
 HYCBB16  Single/becket 
 16 
 5/8-18 
0.97
 3.2 
 82 
 7.4 
 188 
 1:3 
 HYCBD16  Double 
 16 
 5/8-18 
1.02
 3.2, 2.0  82, 52 
 7.5 
 189 
 1:4 
 HYCBS19  Single 
 19 
 3/4-16 
0.99
 3.2 
 82 
 5.7 
 144 
 1:2 
 HYCBB19  Single/becket 
 19 
 3/4-16 
1.24
 3.2 
 82 
 7.9 
 200 
 1:3 
 HYCBD19  Double 
 19 
 3/4-16 
1.29
 3.2, 2.0  82, 52 
 7.9 
 201 
 1:4 
 HYCBS22  Single 
 22 
 7/8-14 
1.69
 4.3 
 108 
 7.4 
 189 
 1:2 
 HYCBB22  Single/becket 
 22 
 7/8-14 
2.19
 4.3 
 108 
 10.8 
 275 
 1:3 
 HYCBD22  Double 
 22 
 7/8-14 
2.38
 4.3, 3.2  108, 82  10.9 
 278 
 1:4 
HYCBS11
HYCBS13
HYCBS16
HYCBS19
HYCBS22
HYCBB16
HYCBB19
HYCBB22
HYCBD11
HYCBD13
HYCBD16
HYCBD19
HYCBD22
ROD END BLOCKS
Cylinder with V block custom configuration

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