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Housings for paper machines, SBFN, SBPN and SDM series

With increasing demands placed on the output of paper machines, the operating conditions for housings, bearings and seals in this application are quite severe. Very high temperatures are typical and the risk of water contamination is always high. SKF provides housings for felt rolls, drying cylinders, and Yankee cylinders (used for producing tissue and board).
Bearing types
  • Spherical roller bearings
  • CARB toroidal roller bearings

Bearing dimension series
  • 22, 23, 31 (SBFN series)
  • 31 (SBPN series)
  • 30, 31 (SDM series)

Shaft diameter range
  • 60 to 180 mm (SBFN series)
  • 180 to 320 mm (SBPN series)
  • 340 to 670 mm (SDM series)

Typical shaft-bearing combinations
  • Stepped shaft with a bearing on a tapered seat

  • Labyrinth (SBFN and SBPN series)
  • Gap-type seal with oil flinger (SDM series)

  • Circulating oil lubrication systems

  • Grey cast iron

  • Two-bolt mounting (SBFN series)
  • Four-bolt mounting (SBPN and SDM series)

Compliance to standards
  • Not standardized

  • SBF, SBP series
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