How to use oil-free bushings? With what use?

The role of the liner from the ring sets
  In the valve applications, the bushing within the valve cover, wrapped around the stem, the general DU oil-free bush PTFE or graphite and other corrosion-resistant materials for sealing effect.

supplement

Role: to protect the shaft, seat hole, do not send DX oil-free bushing Health and wear; shock absorption, noise reduction; reduced to reduce the demolition and maintenance;

Material: an import THORPLAS can be considered under;

Use: no grease, dry running;

Installation: interference fit

Oil-free bushings, as the name implies, do not add lubricants JDB graphite copper sleeve and grease, in the use and maintenance of convenience, cost savings, time and cost;
Several types:
Now there are many in the market, there are three:
1, the metal matrix, usually copper lead, the surface of a hole, the hole by adding grease; rely on a large number of holes in the grease to support the operation, in fact, a long time also need to refuel;
2, composite bushings, one is the steel back + copper + PTFE Teflon, the other is the steel back + copper + POM POM; are pressed molding; inner lining material by the bushing to achieve operation, but it is Thin, fragile, the pressure can not afford;
3, non-metallic self-lubricating bushings: the real self-lubricating; nylon, Teflon,

 Oil-free bushing, said that the improvement of copper is in the design of the time, if the light load we will choose copper sets and oil-free bushings,
The majority of oil-free bushings are steel plates, with sintered spherical bronze powder in the middle, and some other materials, such as polytetrafluoroethylene (PTFE) and lead, are sprayed on the surface. Friction coefficient is small, wear-resistant and engage in a good non-corrosive oil lubrication characteristics. Used for a variety of mechanical sliding parts, such as printing presses, textile machines, fitness pallet truck. Some bushings are specially engineered to withstand high speeds, but can not withstand heavy loads.
Oil-free bearings in general when I design are low-load low-speed 1000 turn to use.

Hunan Jintai Hardware and Machinery Co.,Ltd. is a professional manufacturer on various kind of bearings over 15 years China factory.
We are making all kinds of slide bearings including DU PTFE composit bushing, DX POM composite bushing,bimetal bushing,wrapped bronze bushing, cast sliding bushings and wear plate bearing pad, sintered bronze bushing and sintering parts, ball transfer bearings, etc.
The shapes of bearings can be in sleeve, flanged, spherical, plate, washer, pad, ring, square etc.
Base materials in carbon steel, harden steel, iron, stainless steel, bronze, brass, copper, bronze-steel alloy.Lubricant materials in PTFE, teflon, POM, nylon, plastic, oil, graphite, grease, MoS2, etc.
Export to America,Canada,Brazil,Peru,Argentina,Chile,Paraguay,Europe,Finland,France,Germany,Italy,Spain,Sweden,
Britain,Estonia,Ukraine,Turkey,Austrial,Russia,Korea,Malaysia,Singapore,Thailand,Egypt,Kenya,Somali,
Congo,Zimbabwe,South Africa,etc.