Exclusion measure of hydraulic hammer leakage
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Leakage is one of the fault of hydraulic hammer. If hydraulic hammer get leakage, system pressure can not be built, environment will be polluted, work time of hydraulic hammer will be increased, lead to low productivity, high production cost, and other invaluable serious consequences. So, leakage of hydraulic hammer must be controlled.
1. Classification of leakage
Leakage of hydraulic hammer mainly include fixed seal leakage and move seal leakage. Fixed seal leakage always appears between piston ring and middle cylinder block seal, middle cylinder and Nitrogen chamber seal, valve sleeve and valve body seal, bonnet and valve body seal, valve body and middle cylinder seal and each pipe joint. Move seal leakage always appears between middle cylinder and head of piston, back of piston and piston ring, valve plug and valve sleeve.
2. Main measure of exclude leakage
When leakage appeared, please first check if there are any abnormal phenomenon on sealing region
（1）If there are no abnormal phenomenon on sealing region, adopt follows measures to exclude leakage:
①Leakage of rock breaker for sale only appeared with low pressure, not with high pressure. The reason of this phenomenon is bad assembly surface, we should improve surface roughness to 3.2-6.3μm.
②Oil ring of piston rod become bigger, every process will get oil drip. The reason is the mouth of dust ring scrape oil film, we should change the type of dust ring.
③Leakage of rock breaker for sale only appeared with high pressure, not with low pressure. The reason is improper seal parts. We should choose frost resisting seal parts.
（2）If there are abnormal phenomenon on sealing region, adopt follows measures to exclude leakage:
①Main oil seal surface hardening, slip plan get chip. The reason is abnormal high speed work, high pressure. The solution is change main oil seal.
②Mail oil seal go bad earlier. One of the main reason is oil temperature is to high, every rise 10℃, seal parts life time will reduce by half, so, efficiency hydraulic system cooling device is essential, to insure the temperature below 65℃. Other reason may be the compatibility of oil and seal parts, we should choose suitable hydraulic oil and seal parts type according to the instruction for use, to solve the compatibility problem and extend the life time of seal parts.
1. Classification of leakage
Leakage of hydraulic hammer mainly include fixed seal leakage and move seal leakage. Fixed seal leakage always appears between piston ring and middle cylinder block seal, middle cylinder and Nitrogen chamber seal, valve sleeve and valve body seal, bonnet and valve body seal, valve body and middle cylinder seal and each pipe joint. Move seal leakage always appears between middle cylinder and head of piston, back of piston and piston ring, valve plug and valve sleeve.
2. Main measure of exclude leakage
When leakage appeared, please first check if there are any abnormal phenomenon on sealing region
（1）If there are no abnormal phenomenon on sealing region, adopt follows measures to exclude leakage:
①Leakage of rock breaker for sale only appeared with low pressure, not with high pressure. The reason of this phenomenon is bad assembly surface, we should improve surface roughness to 3.2-6.3μm.
②Oil ring of piston rod become bigger, every process will get oil drip. The reason is the mouth of dust ring scrape oil film, we should change the type of dust ring.
③Leakage of rock breaker for sale only appeared with high pressure, not with low pressure. The reason is improper seal parts. We should choose frost resisting seal parts.
（2）If there are abnormal phenomenon on sealing region, adopt follows measures to exclude leakage:
①Main oil seal surface hardening, slip plan get chip. The reason is abnormal high speed work, high pressure. The solution is change main oil seal.
②Mail oil seal go bad earlier. One of the main reason is oil temperature is to high, every rise 10℃, seal parts life time will reduce by half, so, efficiency hydraulic system cooling device is essential, to insure the temperature below 65℃. Other reason may be the compatibility of oil and seal parts, we should choose suitable hydraulic oil and seal parts type according to the instruction for use, to solve the compatibility problem and extend the life time of seal parts.