CLL series self-locking jackDetailed product description：

1、 Application of self-locking jack
Self locking jacks are mainly used in places where heavy objects need to be supported for a long time. They can still support heavy objects even when the oil pressure is removed, and they are safe and reliable. It can be used underwater, single acting, load retraction, and nut self-locking to make the load safer. Especially in large projects, it is easy to operate and control and hydraulic jack. It is designed with a safety pressure protection device and a built-in pressure relief valve to prevent overload and protect the jack for safe operation. The connection of this device adopts high-pressure rubber hose and threaded joint connection, which has the advantages of fast use and overcomes the shortcomings of traditional joint oil leakage. It is mainly used for equipment installation, lifting and dismantling operations in various industries such as power, construction, machinery manufacturing, mining, railway bridges, shipbuilding, etc

2、 Basic parameters of self-locking jack: The parameters in the table may change due to improvements without prior notice.

model	tonnage mm	itinerary B-Amm	Body height A mm	Extension height Bmm	outer diameter mm	hydraulic cylinder Area cm 2	Weight kg
CLL55-50	fifty-five	fifty	one hundred and sixty-four	two hundred and fourteen	one hundred and twenty-seven	seventy-one point three	sixteen
CLL55-100		one hundred	two hundred and fourteen	three hundred and fourteen			twenty-one
CLL55-150		one hundred and fifty	two hundred and sixty-four	four hundred and fourteen			twenty-six
CLL55-200		two hundred	three hundred and fourteen	five hundred and fourteen			thirty-one
CLL55-250		two hundred and fifty	three hundred and sixty-four	six hundred and fourteen			thirty-six
CLL55-300		three hundred	four hundred and fourteen	seven hundred and fourteen			forty-one
CLL100-50	one hundred	fifty	one hundred and eighty-seven	two hundred and thirty-seven	one hundred and fifty-five	one hundred and thirty-three point three	thirty-one
CLL100-100		one hundred	two hundred and thirty-seven	three hundred and thirty-seven			thirty-nine
CLL100-150		one hundred and fifty	two hundred and eighty-seven	four hundred and thirty-seven			forty-eight
CLL100-200		two hundred	three hundred and thirty-seven	five hundred and thirty-seven			fifty-seven
CLL100-250		two hundred and fifty	three hundred and eighty-seven	six hundred and thirty-seven			sixty-five
CLL100-300		three hundred	four hundred and thirty-seven	seven hundred and fifty-seven			seventy-four
CLL150-50	one hundred and fifty	fifty	one hundred and sixty-five	two hundred and fifteen	two hundred and nineteen	one hundred and ninety-eight	fifty-three
CLL150-100		one hundred	two hundred and fifteen	three hundred and fifteen			sixty-six
CLL150-150		one hundred and fifty	two hundred and sixty-five	four hundred and fifteen			seventy-eight
CLL150-200		two hundred	three hundred and fifteen	five hundred and fifteen			ninety-two
CLL150-250		two hundred and fifty	three hundred and sixty-five	six hundred and fifteen			one hundred and five
CLL150-300		three hundred	four hundred and fifteen	seven hundred and fifteen			one hundred and eighteen
CLL200-50	two hundred	fifty	one hundred and ninety-three	two hundred and forty-three	two hundred and forty-five	two hundred and sixty-six point five	eighty-three
CLL200-100		one hundred	two hundred and forty-three	three hundred and forty-three			one hundred and one
CLL200-150		one hundred and fifty	two hundred and ninety-three	four hundred and ninety-three			one hundred and eighteen
CLL200-200		two hundred	three hundred and forty-three	five hundred and forty-three			one hundred and thirty-six
CLL200-250		two hundred and fifty	three hundred and ninety-three	six hundred and forty-three			one hundred and fifty-three
CLL200-300		three hundred	four hundred and forty-three	seven hundred and forty-three			one hundred and seventy-one
CLL280-50	two hundred and eighty	fifty	two hundred and forty-nine	two hundred and ninety-nine	three hundred and twenty-five	three hundred and sixty-six point four	one hundred and sixteen
CLL280-100		one hundred	two hundred and ninety-nine	three hundred and ninety-nine			one hundred and forty
CLL280- 150		one hundred and fifty	three hundred and forty-nine	four hundred and ninety-nine			one hundred and sixty-three
CLL280-200		two hundred	three hundred and ninety-nine	five hundred and ninety-nine			one hundred and eighty-seven
CLL280-250		two hundred and fifty	four hundred and forty-nine	six hundred and ninety-nine			two hundred and ten
CLL280-300		three hundred	four hundred and ninety-nine	seven hundred and ninety-nine			two hundred and thirty-four
CLL350-50	three hundred and fifty	fifty	two hundred and ninety-five	three hundred and forty-five	three hundred and fifty-five	four hundred and fifty-seven	one hundred and seventy-three
CLL350-100		one hundred	three hundred and forty-five	four hundred and forty-five			two hundred and three
CLL350-150		one hundred and fifty	three hundred and ninety-five	five hundred and forty-five			two hundred and thirty-three
CLL350-200		two hundred	four hundred and forty-five	six hundred and forty-five			two hundred and sixty-three
CLL350-250		two hundred and fifty	four hundred and ninety-five	seven hundred and forty-five			two hundred and ninety-three
CLL350-300		three hundred	five hundred and forty-five	eight hundred and forty-five			three hundred and twenty-three
CLL430-50	four hundred and thirty	fifty	three hundred and thirty-five	three hundred and eighty-five	three hundred and eighty	five hundred and fifty-nine	two hundred and fifty-one
CLL430-100		one hundred	three hundred and eighty-five	four hundred and eighty-five			two hundred and eighty-nine
CLL430-150		one hundred and fifty	four hundred and thirty-five	five hundred and eighty-five			three hundred and twenty-seven
CLL430-200		two hundred	four hundred and eighty-five	six hundred and eighty-five			three hundred and sixty-five
CLL430-250		two hundred and fifty	five hundred and thirty-five	seven hundred and eighty-five			four hundred and three
CLL430-300		three hundred	five hundred and eighty-five	eight hundred and eighty-five			four hundred and forty-one
CLL565-50	five hundred and sixty-five	fifty	three hundred and seventy-five	four hundred and twenty-five	four hundred and thirty	seven hundred and thirty	three hundred and sixty-seven
CLL565-150		one hundred and fifty	four hundred and seventy-five	six hundred and twenty-five			four hundred and sixty-seven
CLL565-250		two hundred and fifty	five hundred and seventy-five	eight hundred and twenty-five			five hundred and sixty-eight

3、 How to use self-locking jack

1. When the oil level of the pump body is insufficient, it is necessary to add working oil (10 # engine oil) to the pump before it can work.
2. Estimate the lifting capacity and avoid overloading during use.
3. Determine the center of gravity of the lifting object, select the point of force for the jack, and consider whether the ground is soft or hard and whether it is cushioned with tough wood to avoid the risk of tipping during lifting.
4. After the jack lifts the heavy object, it should be supported firmly with tough wood in a timely manner. It is forbidden to use the jack as a support to avoid uneven load and the risk of tipping.
5. When using, first connect the quick connector of the manual pump to the top, then select the position and tighten the oil drain screw on the oil pump to start working. Loosen the oil drain screw and unload the oil cylinder.
6. Please refer to the instruction manual for electric pumps.

4、 Precautions for self-locking jack
a) If there is a phenomenon of empty tapping during use, you can first loosen the oil drain screw on the pump body, lift the pump body vertically and tap downwards a few times, then tighten the oil drain screw, and continue to use.
b) When there is a load, do not remove the quick connector to avoid accidents and damage to the components.
c) This machine uses oil as the medium, and it is necessary to maintain the oil and this equipment properly to avoid clogging or oil leakage, which may affect the effectiveness of use.
d) A new or long-term hydraulic jack may experience a slight jump in the piston rod when it is first used due to the presence of a large amount of air in the cylinder. The hydraulic jack can be moved back and forth 2-3 times without load to eliminate the air in the chamber. Long term idle hydraulic jacks, due to the hardening of seals caused by prolonged inactivity, affect the service life of hydraulic jacks. Therefore, when hydraulic jacks are not in use, they should be moved back and forth with no load 2-3 times a month.