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Low friction bearings, Sleeve bushings – Metal polymer bearing supplier

Bushing Operating temperature From – 200°C- 280°C. Metric bearings & imperial bushings made to order. Cylindrical bushes available in standard dimensions.

High Quality PTFE Sleeve Long Life

  • Maintenance-free
  • Self Lubricating
  • Wear-resistant
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The Advantages of Using DP4 Metal-Polymer Bearings in Industrial Applications

low friction bushings

When it comes to industrial machinery, having reliable and efficient bearings is crucial to ensure smooth operation and prevent costly downtime. One type of bearing that has gained popularity in recent years is the DP4 metal-polymer bearing. In this article, we will explore the advantages of using DP4 bearings in industrial applications.

Low friction bushings are mechanical components that are used to reduce friction and wear in various types of machinery. They are typically made from materials such as self-lubricating plastics or composites, and are designed to provide a smooth, low-friction surface for moving parts to slide against.

These bushings are commonly used in applications such as automotive suspension systems, hydraulic cylinders, and industrial machinery. They can help to improve efficiency and reduce maintenance requirements by minimizing the amount of friction and wear that occurs between moving parts.

Low friction bushings are an important component of many different types of machinery, and can help to improve performance, reliability, and durability in a wide range of applications.

What are DP4 Metal-Polymer Bearings?

DP4 bearings are made of a metal backing, usually steel or bronze, that is bonded to a porous layer of polymer material. This polymer layer is impregnated with a solid lubricant, such as PTFE or graphite, that reduces friction and wear. DP4 bearings are known for their excellent load capacity, low friction, and resistance to wear and corrosion.

High Load Capacity and Low Friction

One of the main advantages of DP4 bearings is their high load capacity, which means they can support heavy loads without deforming or failing. This is due to the metal backing, which provides structural support, and the polymer layer, which acts as a cushion and reduces friction. The solid lubricant further reduces friction, making DP4 bearings ideal for high-speed applications where heat and wear are a concern.

Self-Lubricating and Maintenance-Free

DP4 bearings are self-lubricating, which means they do not require external lubrication to operate. The solid lubricant embedded in the polymer layer provides a continuous source of lubrication, reducing the need for maintenance and extending the bearing’s lifespan. This also means DP4 bearings are suitable for use in environments where external lubrication is difficult or impossible.

Corrosion and Wear Resistance

Another advantage of DP4 bearings is their resistance to corrosion and wear. The polymer layer protects the metal backing from exposure to moisture, chemicals, and other corrosive agents, preventing rust and degradation. The solid lubricant also reduces wear, extending the bearing’s lifespan and reducing the need for frequent replacements.

Versatility and Cost-Effectiveness

Another advantage of DP4 bearings is their resistance to corrosion and wear. The polymer layer protects the metal backing from exposure to moisture, chemicals, and other corrosive agents, preventing rust and degradation. The solid lubricant also reduces wear, extending the bearing’s lifespan and reducing the need for frequent replacements.

DP4 metal-polymer bearings offer a range of advantages over traditional metal bearings, including high load capacity, low friction, self-lubrication, corrosion and wear resistance, versatility, and cost-effectiveness. If you are looking for reliable and efficient bearings for your industrial machinery, consider using DP4 bearings to improve performance and reduce downtime.

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These sleeve bushings are available from stock in a wide range of sizes in both inch and metric specifications.

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DP4 sleeve bushing equivalent
PTFE composite sleeve bushing
composite sleeve bushing
Custom Bearing Solutions.

DP4 bearings equivalent; competitively priced vs DP4 sleeve bushing.

  • Metal-Polymer Composite Bushing Material Steel back + Porous Bronze Sinter + PTFE + Fillers

SLEEVE BUSHING STRUCTURE

  • Sliding layer Carbon Steel Backing, Stainless Steel 304, or Stainless Steel 316 bushes.
  • Porous Bronze Sinter
  • PTFE + Fillers
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PTFE composite sleeve bushing

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  • Copper plate + copper powder + (PTFE + filler)
  • Stainless steel + copper powder + (PTFE + filler)
  • Carbon Steel + Copper Powder + (PTFE + Filler)
  • Metal backed PTFE lined

  • Let us help you find the sleeve bushing part you are looking for

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  • DP4 Garlock Bearings equivalent. – bronzelube.com

Sleeve Bushing Technical Data
Performance Date
Load capacity P Static load 250N/mm²
Load capacity P Dynamic load 140N/mm²
Load capacity P Oscoillation Load 60N/mm²
Max line speed V Dry friction 2.5m/s
Max line speed V Oil lubrication >5m/s
PV value limit Dry friction 1.8N/mm²· m/s
PV value limit Oil lubrication 3.6N/mm²· m/s
Friction coef μ Dry friction 0.08~0.20
PTFE Bushing Technical Data
Performance Date
Friction coef μ Oil lubrication 0.02~0.08
Mating Axis Hardness >220 HB
Mating Axis Roughness Ra=0.4~1.25
Working temperature -200~+280℃
Thermal conductivity 40W/(m·k)
Coefficient of linear expansion 11×10-6K-1
Outside surface Plating copper/tin
We can also develop according to customers special request while out of this table.

Life Factors & Sleeve Bushing Application

  1. PV Value:

    PV value is an effective criterion to calculate the service life of sleeve bushing. If there is 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:Sleeve bushing service life 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.

Application: he printing, woven, tobacco and gymnastic machinery, shock absorber etc..

* By combining the metals and the polymers together, its products are endowed with the lower friction coefficient and good capacity of anti-abrasion and self-lubrication. Moreover, the steel back is plated with an erosion-prevention layer. Steel backed with copper-plated steel with porous bronze sintered on the steel and (PTFE+Pb) imbedded into the bores of the bronze.

PTFE composite sleeve bushing
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