Oltec-500

Oltec-500 material structure

OLTEC-500 is a material suitable for heavy loads at low sliding speed, solid lubricant is provided by Graphite with additive, which is inserted into the bronze structure of the bearings.

The base material are CuZn25Al5. The available items in this material are the cylindrical and flanged bush, washers, strips, and special part on customer requests.

Structure of the composite material:

Layer Average analyses of the material
Supporting shell CuZn25Al5
  • Cu = Over 60%
  • Fe = 2.0 ÷ 4.0 %
  • Al = 5.0 ÷ 7.5 %
  • Mn = 2.5 ÷ 5.0 %
  • Sn = 0.5 %
  • Pb = 0.2 %
  • Si = 0.1 %
  • Zn = Rest
Lubricant Graphite + additive

Operating Conditions

Dry

Oil

Grease

Water

Process fluid

Very Good Good Good Good Good

Availability

Characteristics

  • High load capacity
  • Self-lubricating under dry operation
  • Possibility to use in presence of fluids
  • Good chemical inertia to corrosive agents
  • Wide range of operating temperature
  • Flameproof
  • Easy to mount
  • Standard items widely available
  • Special items on demand

Properties

Maximum Specific Load Static 100 N/mm2
Maximum PxV Factor 3,8 N/mm2*m/s
Maximum Sliding Speed Dry 0,4 m/s
Maximum Sliding Speed with Oil 5 m/s
Service Temperature Maximum +300°C
Tensile strength 770 N/mm2
Elongation 12%
Hardness 230 HB
Friction Factor <0,16
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