products

Main Data

  • Description: Cement mill spiral bevel gear
    • GEARX No.: SB27-61RG
    • Module: 27 mm
    • No. of teeth: 61
    • Pressure angle: 20°
    • Helical angle: 35°
    • Helical hand: Right
    • Gear tooth system: Gleason
    • Material: 17CrNiMo6
    • Heat treatment: Through quenching and tempering, then carburizing hardened
    • Case hardening depth(CHD): 3.50 mm
    • Tooth hardness: HRC59~63
    • Tip Diameter: 1630 mm
    • Face width: 210 mm
    • Tooth surface finish: Ground
    • Accuracy grade: DIN 6
    • Weight: 378.9 kg

Application

  • Cement mill

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