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products

Main Data

  • Description: Oil drilling equipment spiral bevel gear(driven gear)
    • GEARX No.: SB24.435-79LG
    • Module: 24.435 mm
    • No. of teeth: 79
    • Pressure angle: 20°
    • Helical angle: 25°
    • Helical hand: Left
    • Gear tooth system: Gleason
    • Material: 34CrNi1Mo
    • Heat treatment: Through quenching and tempering, then carburizing hardened
    • Case hardening depth(CHD): 3.50 mm
    • Tooth hardness: HRC58~62
    • Tip Diameter: 1935.8 mm
    • Inner diameter: 1676.2 mm
    • Back cone distance: 330.2 mm
    • Face width: 125.6 mm
    • Tooth surface finish: Ground
    • Accuracy grade: DIN 5
    • Weight: 604 kg
  • Description: Oil drilling equipment spiral bevel gear(driving gear)
    • GEARX No.: SB24.435-20RG
    • Module: 24.435 mm
    • No. of teeth: 20
    • Pressure angle: 20°
    • Helical angle: 25°
    • Helical hand: Right
    • Gear tooth system: Gleason
    • Material: 34CrNi1Mo
    • Heat treatment: Through quenching and tempering, then carburizing hardened
    • Case hardening depth(CHD): 3.50 mm
    • Tooth hardness: HRC58~62
    • Inner diameter: 158 mm
    • Back cone distance: 968.1 mm
    • Face width: 125.6 mm
    • Tooth surface finish: Ground
    • Accuracy grade: DIN 5
    • Weight: 184 kg

Application

  • Oil drilling equipment

The Main Fabrication Procedure

  • Forging the gear blank.
  • Normalizing
  • Rough machining
  • Ultrasonic inspection, analyzing the chemical composition and testing the mechanical property of sample
  • Quenching and tempering
  • Grinding datum plane
  • Milling
  • Carburizing and tempering
  • Turning the the carbon layer
  • Hardening and tempering( 2 times)
  • Shot peening
  • Finish turning
  • Finish grinding
  • Gear grinding
  • Inspection magnetic inspection the tooth flank, and then magnet demagnetization
  • Mating

 Technical Documents

  • Inspection certificate of material
  • Heat treatment certificate
  • Certificate of ultrasonic inspection
  • Magnetoscopic test certificate(on tooth flank)
  • Size tolerance and geometric tolerance report
  • Inspection report of tooth quality
  • Tooth contact pattern report

Relative Standards

  • DIN 3965 Pt 1 08.86 - Tolerancing of bevel gears - Basic concepts
  • DIN 3965 Pt 2 08.86 - Tolerancing of bevel gears - Tolerances for individual parameters
  • DIN 3965 Pt 3 08.86 - Tolerancing of bevel gears - Tolerances for tangential composite errors
  • DIN 3965 Pt 4 08.86 - Tolerancing of bevel gears - Tolerances for shaft angle errors and axes intersection
  • DIN 3971 07.80 - Definitions and parameters for bevel gears and bevel gear pairs