How to use oil-free bearing bushing

Update: 22-10-2021

Ring sleeve with cushioning function In the valve servi […]

Ring sleeve with cushioning function

In the valve service limit, the bushing is inside the bonnet and wraps the valve stem. Generally, the DU oil-free bushing uses corrosion-resistant materials such as PTFE or connecting rod bushing and graphite for sealing.

Device: Interference cooperation

Oil-free bearing bushings make sense, no need to add smoothing oil JDB graphite copper sleeve and smoothing grease, easy to use and protect, saving capital, time and cost;

Fill in

Efficacy: protect the shaft, seat hole, no DX oil-free bushing from wear and tear; shock absorption, noise reduction; falling stainless steel coiled bushing, dismantling and repairing;

Material: An imported THORPLAS can be studied;

Use: No need for oil-free composite bushing grease, dry work;

There are several types of oil-free bearing bushings:

There are many in the market now, and there are three key points for oil-free bearing bushings:

1. The metal matrix, usually copper-lead, has holes in the appearance, and smooth grease is used in the holes; it depends on a lot of smooth grease in the holes to maintain the work, and the original time is long and needs to be refueled;

2. Composite bushing, one is steel backing + copper powder + PTFE Teflon, the other is steel backing + copper powder + POM polyoxymethylene; it is attributed to restricted molding; the work is completed by the inner wall material of the bushing, but It is very thin, fragile and cannot be adopted under high pressure;

3. Non-metallic self-smoothing bushing: real self-smoothing; nylon, PTFE, and Cylon

The oil-free bearing bushing is very white and it is the improvement of the copper bushing. At the time of design, if the load is light, we will choose the copper bushing and the oil-free bushing.

Now countless oil-free bushings are steel plates, sintered spherical bronze powder in the center, and sprayed with other substances, such as polytetrafluoroethylene (PTFE) and lead inclusions. It has the characteristics of small conflict coefficient, good abrasion resistance, good corrosiveness and oil-free smoothness. It is mostly used for the sliding parts of various machinery, such as printing presses, textile machines, and exercise equipment hydraulic pallets. Some bushings are processed by a unique process, which can adopt high-speed activities, but cannot adopt heavy loads.