Self-Lubricating Multilayer Composite Bushing

Self-Lubricating Multilayer Composite Bushing

1 in stock

professional enterprises engaged in producing self-lubricate bearings, sliding bearings, composite bearings, oil-free bearings, dry-type bearings.

Description

Tri-layer maintenance-free bushing Description, Self-Lubricating Multilayer Composite Bushing Supplier

Tri-layer maintenance-free bushing has a base of lower carbon steel, onto which a porous bronze layer is sintered. PTFE mixtures are impregnated into the interstice of this bronze layer after the rolling process is completed. PTFE sleeve bushing has good physical & mechanical properties, also has certainly chemical properties. It is suitable for rotary, oscillating movement with the performance of self-lubricating. Anti-wear, lower friction, lower noise.

The PTFE bearings, along with similar self-lubricating multilayer composite bushings, are engineered for operation without the necessity of supplementary grease or external lubricants. These bushings are constructed from several layers, typically comprising a steel base, a layer of bronze powder, and a top layer of PTFE (polytetrafluoroethylene) or equivalent fillers. The inclusion of PTFE grants these bushings their self-lubricating feature, facilitating efficient operation under conditions of high load and low speed, all while eliminating the requirement for regular upkeep.

These composite bushings bring a range of benefits to the table, such as reduced friction, enhanced load-bearing capabilities, and increased resistance to wear. Their slim and lightweight nature also makes them ideal for use in space-constrained environments and in designs demanding compactness.

To encapsulate, the PTFE bearings and similar self-lubricating multilayer composite bushings stand out as a hassle-free option for scenarios that demand low friction, the ability to withstand heavy loads, and a need for space efficiency. Thanks to the strategic use of PTFE and other fillers, these bushings are capable of reliable performance without the dependence on added grease or external lubrication.

Superior friction performance under high load conditions.

The Steel backed series are self-lubricating bearings composed of three layers: Polytetrafluoroethylene plastic layers with fillers, sintered bronze layers, and back metals.

Self-Lubricating Multilayer Composite Bushing, switches from metal bearings are self-lubricating, which means you never need grease. Extend the life of your equipment by switching to composite bearings and bushings.

Design partners in reliable tribology, We offer surface engineering expertise to the world in motion for plain bushes and self-lubricating washers.

Garlock gasket material, Garlock gasket, Garlock gasket supplier, Garlock gasket applications, wind turbine parts, plain bearing bushing 

Gasketing is offered in a wide range of materials, including a PTFE washer, compressed fiber washer, and Self-lubricating bronze graphite bearing, …

PART NO. VENDOR’S CAT NO, ID         JOURNAL OD +-.0005 HOUSING BORE L
1 24DU16 1.4992 ±.0008 1.6563 1.000 ±.005
2 16DU16 .9985 +.0006 1.1251 1.000 +.005
3 20DU20 1.2480 +.0008 1.4063 1.250 +.010
4 20DU12 1.2480 ±.0008 1.4063 .750 ±.010
5 16DU08 .9985 ±.0006 1.1251 .510 ±.010
6 24DU16 1.4980 ±.0008 1.6563 1.000 ±.010
7 24DU24 1.4980 +.0008 1.6563 1.500 +.010
8 1.4900 +.0008 1.6483 1.000 +.010
9 — 1.4950 ±.0008 1.6533 1.500 ±.010
10 — .9985 ±.0006 1.1251 .980 ±.010

Du Bushing equivalent, gasket material

DU bushing inch standard size, gasket washer

16DU12
16DU16
18DU12
18DU16
20DU12
20DU16
20DU20
22DU16
22DU22
24DU16
24DU24
24DU32
26DU16
26DU24
28DU16
28DU28
28DU32
30DU16
30DU30
30DU36
32DU16
32DU32
32DU40
36DU32
36DU36
36DU48
40DU32
40DU48
44DU32
44DU48
48DU32
48DU48
48DU60
64DU48
64DU60
64DU76

Self-lubricating bushing

Carbon Steel + Copper Powder + (PTFE + Pb + Filler)
Steel backed with copper-plated steel with porous bronze sintered on the steel and polymers (PTFE+Pb) embedded into the bores of the bronze. By combining the metals and the polymers together, its products are endowed with a lower friction coefficient and good capacity of anti-abrasion and self-lubrication. Moreover, the steel back is plated with an erosion-prevention layer. Products of the PTFE composite series are widely applied in printing, weaving, and tobacco-producing machines, gymnastic equipment, etc.

Performance Index Data
Max Load P Static Load 250N/mm²
Max Load P Dynamic Load 140N/mm²
Max Load P Oscillation Load 60N/mm²
Linear Velocity V Dry Lubrication 2.5m/s
Linear Velocity V Oil Lubrication >5m/s
Max PV value Grease Lubrication 1.8N/mm²· m/s
Max PV value Oil Lubrication 3.6N/mm²· m/s
Performance Index Data
Friction Coefficient μ Dry Lubrication 0.08~0.20
Friction Coefficient μ Oil Lubrication 0.02~0.07
Mating Axis Hardness >200 HB
Mating Axis Roughness Ra=0.4~1.25
Working Temperature -200~+280℃
Heat-conducting Coefficient 40W/(m·k)
Heat-expansion Coefficient(Axial) 11×10-6K-1

Feature

■ Serviceable without the need for lubrication. Thin and lightweight for compact design.
■ Demonstrates low coefficient of friction and superior load performance under high-load, low-speed conditions.
■ Usable at the PV values even in the middle- and high-speed zones when lubricated.
â–  Usable in the wide temperature range from low to high temperatures. Has superior chemical resistance.
■ Features superior dimensional stability, mechanical strength, and thermal conductivity.
â–  The 0.5 mm thin standard steel-backed bushing products are also available for space-saving.

Wear-resistant

Self-Lubricating Multilayer Composite Bushing is of excellent anti-abrasion performance, mainly due to the particular molecule structure of PTFE. The abrasion process can be generally divided into three phases, so there are kinds of friction coefficients. See the right graph:

1. “Running-in” phrase: PTFE compound on the bushing is transferred to its mating surface and forms a lubricating film. At this phase, the friction coefficient is bigger, thus the abrasion pace is very quick. See the curve shown in area I of the graph.
2. “Stabilization” abrasion phrase: After the “Running-in phase”, the friction happens between PTFE and PTFE, thus the friction coefficient is smaller and keeps steady. As a result, the wear rate is low and steady. See the curve shown in areaâ…¡of the graph.
3. “Sharp” abrasion phrase: As PTFE in the porous layer is slowly consumed up, not enough lubricant can be supplied to the gliding media. The friction coefficient and wear rate will rapidly rise. When 70% of the bronze surface is exposed, the service life of Self-Lubricating Multilayer Composite Bushing closes to its end. See the curve shown in area â…¢of the graph.

Life Factors
1). PV Value
PV value is an effective criterion to calculate the service life of Self-Lubricating Multilayer Composite Bushing. If there is a need to prolong the service Life, PV value must be reduced.2). Ambient Temperature
The higher the working temperature is, the shorter the life of the products would be.3). Quality of the Mating Surface
Service life Self-Lubricating Multilayer Composite Bushing can be obviously prolonged if its mating axis is made by alloy steel or is plated by hard chrome and with surface Roughness Ra=0.4~0.63.

Additional information

Size

Custom Size, Extra large, Imperial size, Metric Size

Title

Go to Top