Scope of application：suitable for large construction machinery such as excavators or demanding environments.
Inner rubber layer：Nitrile or neoprene synthetic rubber, suitable for biodegradable hydraulic oil
Reinforcement layer：one or two layers of steel wire weaving (1/2" ‒3/4"), pulse ≥ 300,000 times, four layers of steel wire winding (1" ‒ 2"), pulse ≥ 1 million times
Outer layer：non -stripping, wear-resistant, weather-resistant synthetic rubber
Temperature range：-40℃ to +100℃ (-40℉ to +212℉) -40℃ to +121℃ (-40℉ to +250℉)
Low bending：the bending radius is reduced by 41% compared to the ISO18752 standard; 47% lower than the SAE standard
High pressure：exceed the SAE standard by 60%
Long service life：Two-year warranty for integrated hose joints and hydrogenated nitrile seals provided by Litong for supporting use
model |
ISO18752 |
Inner diameter of hose |
Outer diameter of hose |
Working pressure |
Minimum burst pressure |
Minimum bending radius |
Weight |
Connector series |
||
6991standard tube |
6991AR wear-resistant tube AR |
6991 super wear-resistant tube SAR |
||||||||
SA6991-1/2"-1 |
AC |
AC |
AC |
13.0 |
20.7 |
18 |
72 |
80 |
0.419 |
31series |
SA6991-5/8"-1 |
AC |
AC |
AC |
16.0 |
24.0 |
15 |
60 |
105 |
0.515 |
31series |
SA6991-3/4"-1 |
AC |
AC |
AC |
19.0 |
28.0 |
14 |
56 |
120 |
0.661 |
31series |
SA6991-1"-4 |
CC |
CC |
CC |
25.0 |
33.5 |
14 |
56 |
150 |
0.998 |
31series |
SA6991-1 1/4"-4 |
CC |
CC |
CC |
32.0 |
43.0 |
14 |
56 |
190 |
1.395 |
31series |
SA6991-1 1/2"-4 |
CC |
CC |
CC |
38.0 |
48.0 |
9 |
36 |
240 |
1.577 |
31series |
SA6991-2"-4 |
CC |
CC |
CC |
51.0 |
62.5 |
8 |
32 |
500 |
2.341 |
31series |
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