Hydraulic gear pump is composed of a pair of intermeshing gear, through the gear meshing and separation of the tooth rotation to form a change in the volume of oil and oil pressure. When the gear meshing, the meshing between the two teeth of the hydraulic oil due to the closure of the teeth can not be discharged to form a trapped oil phenomenon. Trapped oil will produce high pressure, side pressure on the shaft, easy to bend the shaft, premature bearing damage, but also consume the motor power. The solution is to open a discharge groove to the discharge chamber at the side of the gear meshing so that the oil trapped between the two teeth can be discharged to eliminate the trapped oil phenomenon.
Rail Plastic dowel(Rail Plastic Sleeve)
Rail plastic dowel is also called rail plastic sleeve/plastic insert/concrete dowel/ concrete insert, which is a counter-party fastener for a screw spike or anchor bolt, and it is pre-imbedded into the concrete sleeper or wooden sleeper, installed together with Screw Spikes, guide plates and rail clips to fasten the rail tracks.
Plastic Sleeve,Nylon Plastic Dowel,Customized Nylon Lock Dowel,Plastic Nylon Sleeve
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