235
Length
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 
different 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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