Material | PTFE+NBR+PU+METAL+NY+PHENOLIC |
Model Number | 4206167 |
Place of Origin | Mainland , China , Japan |
Product Name | EXCAVATOR Seal Kit |
Packing | Plastic box , plastic bag or customer's brand |
MOQ(Minimum Order Quantity ) | 1 set |
Port | Guangzhou/Shenzhen/Hongkong |
Delivery Methods | DHL / Fedex / UPS / EMS or by Air / Sea |
Supply Ability | 5000 sets per month |
Payment Methods | TT/ LC/ Western Union / Money Gram |
Retraction force difference
For double-acting single-rod cylinders, when the input and output pressures are reversed, there is a force difference between the two sides of the piston due to one side of the piston being covered by the rod attached to it. The cylinder rod reduces the surface area of the piston and reduces the force that can be applied for the retraction stroke..
During the retraction stroke, if the oil is pumped into the head (or gland) at the rod end and the oil from the cap end flows back to the reservoir without pressure, the fluid pressure in the rod end is (Pull Force) / (piston area - piston rod area):
where P is the fluid pressure, Fp is the pulling force, Ap is the piston face area and Ar is the rod cross-section area.