Bearing specs

Dimension key

  • d = inner diameter
  • D = outer diameter
  • B = depth

Cam covers

  • SKF 6202-RS1/C3 sealed single row deep groove rolling (d=15mm, D=35mm, B=10mm)
  • 2 needed

Alternator cover:

  • NSK 6003 single row deep groove rolling (d=17mm, D=35mm, B=10mm)
  • 1 needed

Clutch cover:

  • FAO 630/8 shielded single row deep groove rolling (d=8mm, D=22mm, B=11mm)
  • 1 needed

belt-pulleys.jpg

Cam belt pulleys

  • A = 22mm double-shielded single row deep groove rolling (d=8mm, D=22mm, B=11mm)
    • 2 needed
  • B = 32mm double-shielded single row deep groove rolling (d=12mm, D=32mm, B=10mm)
    • 4 needed
  • C = 12mm C-clips
    • 2 needed
  • Hex head bolts (thread OD=7.78mm, length=18.18mm, 13mm head)
    • 4 needed
    • Washers and lock washers needed too
    • These are typically rusty, so maybe stainless?

Large timing gear

  • (d=35mm, D=40mm, B=12.5mm… maybe 13mm)
  • 2 needed

Ducati Alazzurra 650 engine bearing layout alternator side

Engine case (alternator side)

  • A = SKF 6004/C3 single row deep groove rolling (d=20mm, D=42mm, B=12mm)
  • B = NSK 6205/C3 single row deep groove rolling (d=25mm, B=52mm, B=15mm)
  • C = 7207X2TB Main bearing single row deep groove rolling (d=35mm, D=72mm, B=17mm)
  • D = SKF 6004/C3 single rowdeep groove rolling (d=20mm, D=42mm, B=12mm)
  • Swingarm bushing
    • Bronze bushing (d=28mm, D=34mm?, B=27mm)
      • 1 needed

Ducati Alazzurra 650 engine bearing layout clutch side

Engine case (clutch side)

  • A = Looks like “D” single row deep groove rolling
  • B = CPM DM 2013 (d=35mm, D=81mm, B=21mm) Main bearing single row deep groove floating balls (10) in plastic cage rolling
    • C = NSK 6205/C3 single row deep groove rolling (d=25mm, D=52mm, B=15mm)
    • D = NSK 6203/C3 single row deep groove rolling (d=17mm, D=40mm, B=11mm?)
    • Swingarm bushing
      • Bronze bushing (d=28mm, D=34mm?, B=27mm)
        • 1 needed