Use of puller tools
Use of puller tools
Puller tools are frequently used tools in mechanical maintenance. It is mainly used to remove the damaged bearing from the shaft along the axial direction. It is mainly composed of rotating handle, screw rod and pull claw. There are two claws and three claws. The main dimensions are the length of the claws, the distance between the claws, and the length of the screw to adapt to bearings with different diameters and different axial installation depths. So, do you know how to use the puller tool? Let me give you a brief introduction, hoping to be helpful to you.
The puller is a special tool for disassembling the gears or bearings installed on the shaft with interference fit. The commonly used puller is a manual type, and a pressure screw and a pull claw are installed on the one-rod bow-shaped fork.
When in use, pad a backing plate between the shaft end and the pressure screw, pull the gear or bearing with the pull claw of the puller, and then tighten the pressure screw to pull the gear and other interference fit installation parts from the shaft.
Precautions for use:
1. Check whether each part is normal before use.
2. Strictly abide by the provisions in the main parameters when using it, and avoid super high and overload, otherwise, when the lifting height or lifting tonnage exceeds the regulations, serious oil leakage will occur at the top of the cylinder.
3. If the amount of oil in the manual pump body is insufficient, it is necessary to add N33# hydraulic oil that should be fully filtered to the pump before it can work.
4. For electric pumps, please refer to the manual for electric pumps.
5. The center of gravity of the heavy object should be moderate, and the jack should be selected reasonably. The bottom surface should be leveled. At the same time, the soft and hard conditions of the ground should be considered, whether it should be lined with tough wood.
6. After the puller lifts up the heavy object, the support should be used to support the heavy object in time. It is forbidden to use the puller as a support. Please choose if you need to support heavy objects for a long time.
7. If several pullers need to be lifted at the same time, in addition to placing the pullers correctly, a multi-top diverter valve should be used, and the load of each puller should be balanced, and attention should be paid to keeping the lifting speeds synchronized. It should also be considered that the ground may sink due to uneven weight to prevent the weight being lifted from tilting and causing danger.