Oilless Braided Composite Self-Lubricated Bearing, Bushing, Steel Backed is a type of bearing that is specifically designed to operate without the need for external lubrication. It consists of a braided composite material, primarily (Polytetrafluoroethylene), which is self-lubricating and able to withstand extreme temperatures and pressures. The steel backing provides structural support and durability, while the composite material ensures smooth, friction-free operation.

This type of bearing is commonly used in applications where lubrication is difficult or impossible, such as in high-temperature or vacuum environments. The self-lubricating properties of the composite allow it to operate effectively without the need for regular maintenance or replacement of lubricants.

The braided composite structure of the bearing also contributes to its durability and wear resistance. The fibers are woven together in a way that creates a strong, yet flexible material that can withstand both compressive and tensile forces. This makes it an excellent choice for applications that require bearings to withstand heavy loads and frequent motion.

Overall, Oilless Braided Composite Self-Lubricated Bearings, Bushings, and Steel Backed products are reliable, efficient, and cost-effective solutions for applications that demand high performance in extreme environments.

Value Bushing Steel Backed Lined Bronze And Brass Bushings-Stainless Steel 316

Steel Backed Bushing High performance steel reinforced bushings, environmental protection is based on steel substrate, central bronze powder, sintered spherical surface that rolls four ethylene () and a mixture of green polymeric material, bearing rolling and sliding. The product is lead-free environmental protection, the wear-resistant performance is excellent, a plastic layer and a copper layer with high strength, fatigue resistance, impact-resistant performance are a good way to an advantage.

Bushings Metric (mm)Imperial (inch) Dimensions Get A quote.
Tolerances, operating clearance (Bushing data)
Shaft and housing tolerances (Design of bushing arrangements)

Maximum load pressure: 180Mpa

Friction factor: 0.03~0.20

Operating temperature range: -90 ° C ~ 180 ° C

 

 

Poly tetra fluoroethylene()

 

It is a polymer made of tetrafluoroethylene as monomer.White waxy, translucent, good heat and cold resistance, can be used in -180 ~ 260 C for a long time.This material has the characteristics of anti - acid, anti - alkali, anti - various organic solvents, almost insoluble in all solvents.At the same time, has the characteristics of high temperature resistance, its coefficient of friction is very low, so it can be used for lubrication, but also become easy to clean the ideal coating of the inner layer of the water pipe;Toxic, human carcinogen.

 

 

Property		date
maximum bearing capacityP	Static load	250N/mm²
	Dynamic load	140N/mm²
highest line speedV	Dry friction	2.5m/s
	Oil lubrication	5m/s
High PV value	Dry friction	3.6N/mm²・m/s
	Oil lubrication	50N/mm²・m/s
The coefficient of frictionμ	Dry friction	0.04~0.20
	Oil lubrication	0.02~0.07
The use of temperature		-195℃～+280℃
Coefficient of thermal conductivity		42W/m・K
Coefficient of thermal expansion		11×10-6/K

 

 

Characteristics

 

1.Suitable for use in fatting or lubricating conditions, high bearing capacity, good wear resistance;

2.Suitable for rotating, reciprocating and swinging and other forms of movement and frequent starting, intermittent movement or heavy load and other occasions which are not easy to form oil film lubrication;

3.High load, low speed lubrication conditions with stable low friction coefficient and excellent wear resistance;

4.Friction surface layer can be secondary processing, bearing into the seat hole after processing, can further improve the accuracy of fit;

5.Long working time under boundary lubrication conditions, such as in the process of regular grease maintenance, can extend the service life;

6.Bearings for thin-wall structure, light weight, occupies a small volume, suitable for compact design;

7.Good dimensional stability, high mechanical strength;

 

POM Composite Bearing

 

Wrapped sliding bearing, wrapped bushing, steel/POM sliding layer, DIN 1494/ISO 3547, Low-maintenance
TECHNICAL DETAILS
Specific load capacity static	≤ 250 [N/mm2]	Temperature strain	- 40 [°C] to + 130 [°C]
Specific load capacity dynamic	≤ 140 [N/mm2]
Sliding speed	≤ 2.5 [m/s]	Max. PV-value	2.8 [N/mm² x m/s]
Friction value	0.04 [µ] to 0.12 [µ]
MATERIALS
Support material	Steel copper-plated or tin-plated	Intermediate layer	Sintered bronze
Sliding layer	POM (MoS2)/lubrication pockets
TOLERANCE DETAILS
Housing Ø	H7	Shaft tolerance	h8
Bushing inner-Ø after mounting	in the range of D
SHAFT MATERIAL
Steel, hardened or untempered
Surface roughness ≤ Ra 0.8
PROPERTIES
It works with grease or oil lubrication. All kind of movements are suitable for this sliding material. It has good resistance to dirt, is very robust and has a high load capacity.
RANGE OF APPLICATION
truck cranes, agriculture machines, hydraulic cylinders, construction machinery, tale gates
MAINTENANCE
It is a low maintanence bearing material with MoS2 sliding layer and lubrication pockets. An initial greasing during installation is necessary, after that, periodic greasing with oil or grease is mandatory.
MOUNTING ADVISE
Housing	Chamfer min. 1.5 mm x 15-45°, for easy bushing alignment
Shaft	Chamfer 5 mm x 15°, for easy insertion of the shaft
We advises to use a force fitting mandrel for the installation of the bushing. It might be necessary to apply some grease on the outer surface of the bushing when press fitting it into the housing.
Gluing	Adhesive should not contact the sliding surface!

 

Strusture

 

1. POM thickness 0.30~0.50 mm. It provides high wearresistance and low friction even with only minute volume oflubricant are supplied, this bearing surface carries a pattern of circular indents which should be filled with grease on assembly of the bearing.
2. Sintered bronze powder thickness 0.20-0.35mm. A special composition of powdered copper is thermally fused to the steel backing. This contact layer acts as an anchor for the layer and conducts the thermal build up away from the bearing surfaces.
3. Low-carbon steel.Setting the foundation of the bushings, the steel back provides exceptional stability,load carrying and heat dissipation characteristics.

 

self - lubricating oil - free bearing bearing of the molding process

 

 

 

 

 

Structure And Composition

 

· Metal-Polymer Composite Bushing Material
· Steel Back + Porous Bronze Sinter + POM with Lubrication Indents

 

 

Operating Performance
Dry	Poor
Oil lubricated	Good
Grease lubricated	Very Good
Water lubricated	Poor
Process fluid lubricated	Poor

 

 

· Metal-Polymer Composite Bushing Material
· Steel Back + Porous Bronze Sinter +
POM with Lubrication Indents

Availability

bearing forms available in standard dimensions
· cylindrical bushes
· thrust washers
· sliding plates
metric bearings and imperial bushings made to order: standard bushing forms in special dimensions, half-bushings, special shapes obtained by stamping, bearings with locating notches, lubricant holes and machined grooves, customized bushing designs