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Non lubricated bearings

Steel backed & Bronze powder with POM Marginal bearings,Lubricated Bearings

The sliding bearing specialist with in-house custom manufacture

Composite Cylindrical bushes

Metric Composite Plain bearing

sliding material, POM

Description

Lead Free boundary lubrication bearing ROHS. It can be applied to the field where non-lead is required. Now its wldely used in textile machines,auto operating parts and other middle speed, middle load and grease lubrication occasions.

A Powerful Force: Self-Lubrication Bearing Bushing to Customers Around the World.

DX bushing is is filled POM modified polyethylene resin for the inner surface of the layer, three layers composite self-lubricating materials, DX bushing is a positive boundary lubricating materials, so especially suitable for high load of the rotating swing load movement and often difficult to open and close and the formation of hydrodynamic lubrication of bearings, thrust washers, slide, ball seat and other friction parts.

Material Structure

  1. POM 0.03-0.50mm, anti abrasion, low friction coefficient even no oil given. The inside of the bearing are full of indentions, which need to be filled with grease before installing.
  2. Sintered Bronze powder layer, 0.2-0.35mm, high load capacity and anti-abrasion, good thermal conductivity, which also further strengthen the combination of the POM layer and steel plate.
  3. Low carbon steel backing, which improved, load capacity & thermal conductivity.
  4. Copper/Tin plating layer, 0.002mm, anti-corrosion.

Structure And Composition

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

Characteristics

  •  maintenance-free operation
  • very good frictional properties
  •  high load capacity
  •  high sliding velocity
  •  small operating clearance
  • Long service intervals
  • Low friction coefficient
  • Wide range of use
  • Long lifetime

Type of application

  • Hydraulic cranes
  • Hydraulic cylinders
  • Agriculture machines
  • Hoisting equipment

Design

  • Cylindrical bearings
  • Flanged bearings
  • Thrust washers
  • Plates
  • Drawing details

Technical information and standard dimensions on the data sheet.

Why choose POM  bearing?

  • Maintenance-free operation
  • No lubrication required (PTFE composite)
  • Initial lubrication required (POM composite)
  • Minimum wall thickness, minimum space requirements
  • Accommodation of heavy loads
  • Wide range of temperatures
  • Good sliding properties
  • Virtually no stick-slip
  • High wear resistance
  • Less sensitive to edge loading (POM composite)
  • No machining required.
OPERATING PERFORMANCE
Dry Poor
Oil lubricated Good
Grease lubricated Very Good
Water lubricated Poor
Process fluid lubricated Poor

Bearing Properties

GENERAL Unit Value
Maximum load, p Static

Dynamic

N/mm2

N/mm2

140

140

Operating temperature Min

Max

°C

°C

– 40

130

Coefficient of linear thermal expansion Parallel to the surface 10-6/K 11
Normal to the surface 10-6/K 29
GREASE LUBRICATED
Maximum sliding speed, U m/s 2.5
Maximum pU factor N/mm2 x m/s 2.8
Coefficient of friction 0.06 – 0.12
RECOMMENDATIONS
Shaft surface roughness, Ra µm ≤ 0.4
Shaft surface hardness Normal

For longer service life

HB

HB

> 200

> 350

Technical Datas

Max Load Static load 250N/mm2 Operation Temp. -40℃~+110℃
Low-speed Rotation 140N/mm2 max linear velocity Pre-lubricated 2m/s
Rotation、Oscillation 70N/mm2 Continuous supplying oil >2m/s
Max PV 3N/mm2.m/s Thermal conductivity 42W(m.K)-1
Coefficient of thermal expansion 11×10-6/K Friction coefficient 0.05~0.20

 

Additional information

Weight 3 kg
Dimensions 48 × 120 cm
Sizes

34, 42, 44, 48

Colors

Black, Blue, Brown, Gray

Shape

Loose, Slim, Straight

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