What Are The Safety Operating Specifications For Jacks?
2021-05-081) Before use, check that all parts are in good condition and the oil is clean. It is strictly forbidden to use the safety plug of the hydraulic jack if it is damaged, or the thread of the screw and rack jack is 20%.
2) The jack should be placed in a flat, solid place and leveled with a mat.
3) The jack must be perpendicular to the load surface, and an anti-slip layer should be added between the top and the contact surface of the weight.
4) The jack is strictly prohibited from being overloaded, and the handle must not be lengthened.
5) No one should stand in front of the safety bolt when using it.
6) In the process of jacking up, the insurance cushion should be added under the weight with the rise of the heavy object. After reaching the top elevation, the weight should be padded in time.
7) When two objects and two or more jacks are used to lift an object at the same time, the total lifting capacity of the jack should be no less than twice the load. When jacking up, it should be unified and commanded by a special person to ensure that the jacking speed and force of each jack are basically the same.
8) The top elevation of the hydraulic jack shall not exceed the limit mark line; the top elevation of the screw and rack type jack shall not exceed 3/4 of the height of the screw or rack.
9) Jacks shall not bear the load under unattended conditions for a long time.
10) The speed of the jack must be slow. It is strictly forbidden to drop suddenly under load.