Hydropower

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BEST FIT OF GLEBUS BEARINGS IN HYDROPOWER EQUIPMENT

  • Wicket Gate bearings and another regulating mechanism
  • Linkage bearings and thrush washers
  • Operating Ring wear pads
  • Servomotors bearings and washers
  • Kaplan Runner Hub bearings
  • Gates
  • Chains
  • Sluices
  • Butterfly or spherical valves
  • Cylinders

MECHANICAL PROPERTIES & APPLICATION DATA

G-METAL® GBM 441; 442*
material characteristics
*Same base alloy, with running in film
Compressive Strength [MPa] 300 Max. PV dry [N/mm2 x m/s] 1
Hardness [HB 2.5/31,25/15], min. 40 Typical coefficient of friction, dry 0.10 – 0.20
Density [g/cm3] 6.2 Typical coefficient of friction, wet 0.10 – 0.15
Type of solid lubricant C Service temperature min/max [°C] -150 / 280
Max. static load [MPa] 290 Min. hardness counter material [HB] 250
Max. dynamic load [MPa] 100 Recommended surface roughness of counter material Ra [µm] 0.2 – 0.8
Max. sliding speed, dry [m/s] 0.5

Carrier linear coeff. of thermal exp.: 16 (10-6/K)

Important remark: The above-mentioned material properties, in particular friction coefficients, are not assured properties. they are to be used only as guidelines for the selection of materials.

ADVANTAGES

  • Maintenance-free service
  • Inexpensive, easy and fast to replace
  • Suitable for intermittent movements
  • Great at service requiring higher tolerances, higher flexibility or shock absorption
  • Allowing for enormous variability in shapes and sizes
  • Great emergency running properties
  • Performing particularly well in wet environments
  • No water absorption, maximum dimensional accuracy and stability
  • Providing no threat to the environment by oil contamination

G-Metal self-lubricating bimetallic plain bearings and bushings with a sintered sliding layer are especially suitable for continuous operations in a wet environment. Sintering technology allows for the construction and manufacturing of a wide range of complex shapes with consistent self-lubricating properties throughout the whole lifecycle of the critical moving parts. G-Metal based materials provide reliable and high-performance no-grease solutions.