JRC Single acting jack (single acting one-way jack)Detailed product description：

Detailed explanation:
I. Purpose

JRC series single acting jacks (single action jacks, one-way jacks) are designed with safety pressure protection devices and built-in pressure relief valves to prevent overload and protect the jacks 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、 Usage method
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, and it is forbidden to use multiple jacks at the same time 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.

3、 JRC single acting jack (single acting one-way jack) basic parameters:

model	Tonnage T	Travel distance mm	Effective area of hydraulic cylinder cm2	Hydraulic oil solubility cm3	Body height mm	Extension height mm	Outer diameter mm	Weight Kg
JRC-50	five	sixteen	six point four	ten	forty-one	fifty-seven	forty-eight	one
JRC-51		twenty-five	six point four	sixteen	one hundred and ten	one hundred and thirty-six	forty-eight	one
JRC-53		seventy-six	six point four	forty-nine	one hundred and sixty-five	two hundred and forty-one	forty-eight	one point five
JRC-55		one hundred and twenty-seven	six point four	eighty-one	two hundred and sixteen	three hundred and forty-three	forty-eight	one point nine
JRC-57		one hundred and seventy-eight	six point four	one hundred and fourteen	two hundred and seventy-three	four hundred and fifty-one	forty-eight	two point four
JRC-59		two hundred and thirty-two	six point four	one hundred and forty-eight	three hundred and twenty-four	five hundred and fifty-six	forty-eight	two point eight
JRC-101	ten	twenty-five	fourteen point four	thirty-six	ninety	one hundred and fifteen	fifty-eight	one point eight
JRC-102		fifty-four	fourteen point four	seventy-eight	one hundred and twenty-one	one hundred and seventy-six	fifty-eight	two point three
JRC-104		one hundred and five	fourteen point four	one hundred and fifty-one	one hundred and seventy-one	two hundred and seventy-six	fifty-eight	three point three
JRC-106		one hundred and fifty-six	fourteen point four	two hundred and twenty-five	two hundred and forty-eight	four hundred and three	fifty-eight	four point four
JRC-108		two hundred and three	fourteen point four	two hundred and ninety-two	two hundred and ninety-eight	five hundred and two	fifty-eight	five point four
JRC-1010		two hundred and fifty-seven	fourteen point four	three hundred and seventy	three hundred and forty-nine	six hundred and seven	fifty-eight	six point four
JRC-1012		three hundred and five	fourteen point four	four hundred and thirty-nine	four hundred	seven hundred and five	fifty-eight	six point eight
JRC-1014		three hundred and fifty-six	fourteen point four	five hundred and thirteen	four hundred and fifty-one	eight hundred and six	fifty-eight	eight point two
JRC-151	fifteen	twenty-five	twenty point three	fifty-one	one hundred and twenty-four	one hundred and forty-nine	seventy	three point three
JRC-152		fifty-one	twenty point three	one hundred and four	one hundred and forty-nine	two hundred	seventy	four point one
JRC-154		one hundred and two	twenty point three	two hundred and seven	two hundred	three hundred and two	seventy	five
JRC-156		one hundred and fifty-two	twenty point three	three hundred and nine	two hundred and seventy-two	four hundred and twenty-four	seventy	six point eight
JRC-158		two hundred and three	twenty point three	four hundred and twelve	three hundred and twenty-two	five hundred and twenty-six	seventy	eight point two
JRC-1510		two hundred and fifty-four	twenty point three	five hundred and sixteen	three hundred and seventy-three	six hundred and twenty-seven	seventy	nine point five
JRC-1512		three hundred and five	twenty point three	six hundred and nineteen	four hundred and twenty-four	seven hundred and twenty-nine	seventy	ten point nine
JRC-1514		three hundred and fifty-six	twenty point three	seven hundred and twenty-three	four hundred and seventy-five	eight hundred and thirty	seventy	eleven point eight
JRC-251	twenty-five	twenty-five	thirty-three point two	eighty-three	one hundred and forty	one hundred and sixty-five	eighty-six	five point nine
JRC-252		fifty-one	thirty-three point two	one hundred and sixty-nine	one hundred and sixty-five	two hundred and sixteen	eighty-six	six point four
JRC-254		one hundred and two	thirty-three point two	three hundred and thirty-nine	two hundred and sixteen	three hundred and eighteen	eighty-six	eight point two
JRC-256		one hundred and fifty-nine	thirty-three point two	five hundred and twenty-eight	two hundred and seventy-three	four hundred and thirty-two	eighty-six	ten
JRC-258		two hundred and ten	thirty-three point two	six hundred and ninety-seven	three hundred and twenty-four	five hundred and thirty-three	eighty-six	twelve point three
JRC-2510		two hundred and sixty	thirty-three point two	eight hundred and sixty-three	three hundred and seventy-five	six hundred and thirty-five	eighty-six	fourteen point one
JRC-2512		three hundred and eleven	thirty-three point two	one thousand and thirty-three	four hundred and twenty-five	seven hundred and thirty-seven	eighty-six	sixteen point three
JRC-2514		three hundred and sixty-two	thirty-three point two	one thousand two hundred and two	four hundred and seventy-six	eight hundred and thirty-eight	eighty-six	seventeen point one
JRC-308	thirty	two hundred and ten	forty-one point nine	eight hundred and eighty	three hundred and eighty-seven	five hundred and ninety-seven	one hundred and two	eighteen point one
JRC-502	fifty	fifty-one	seventy-one point three	three hundred and sixty-four	one hundred and seventy-six	two hundred and twenty-seven	one hundred and twenty-seven	fifteen
JRC-504		one hundred and two	seventy-one point three	seven hundred and twenty-seven	two hundred and twenty-seven	three hundred and twenty-nine	one hundred and twenty-seven	nineteen point one
JRC-506		one hundred and fifty-nine	seventy-one point three	one thousand one hundred and thirty-four	two hundred and eighty-three	four hundred and forty-one	one hundred and twenty-seven	twenty-three point two
JRC-5013		three hundred and thirty-seven	seventy-one point three	two thousand four hundred and three	four hundred and sixty-one	seven hundred and ninety-seven	one hundred and twenty-seven	thirty-seven point seven
JRC-756	seventy-five	one hundred and fifty-six	one hundred and two point six	one thousand six hundred and one	two hundred and eighty-six	four hundred and forty-one	one hundred and forty-six	twenty-nine point five
JRC-7513		three hundred and thirty-four	one hundred and two point six	three thousand four hundred and twenty-seven	four hundred and ninety-two	eight hundred and twenty-six	one hundred and forty-six	fifty-nine
JRC-1006	one hundred	one hundred and sixty-eight	one hundred and thirty-three point two	two thousand two hundred and thirty-eight	three hundred and fifty-seven	five hundred and twenty-six	one hundred and seventy-eight	fifty-nine
JRC-10010		two hundred and sixty	one hundred and thirty-three point two	three thousand four hundred and sixty-three	four hundred and forty-nine	seven hundred and ten	one hundred and seventy-eight	seventy-two point six