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APTA Wheel Set Assembly Standard
What is it?
APTA Wheel Set Assembly Standard WHAT?
• Comprehensive
• Empirical as well as technical basis
• New assemblies
• Maintenance assemblies
Standard for the assembly of wheel sets used in passenger service
APTA Wheel Set Assembly Standard
When?
APTA Wheel Set Assembly Standard
This year.
APTA Wheel Set Assembly Standard
• Draft of standard is nearly complete
• Next committee meeting in June
• Expect completion at that meeting
• Out for comments by the end of summer
APTA Wheel Set Assembly Standard
Why?
APTA Wheel Set Assembly Standard WHY?
• Safety
• Knowledge transfer
• Quality (knowing what you’re getting)
• Current standard (AAR) is inadequate for application to passenger railroads
APTA Wheel Set Assembly Standard WHY?
• Origin of the AAR (Association of American Railroads)
• Interchange rules
• Current status
• Use by carbuilders and transit authorities
APTA Wheel Set Assembly Standard WHY?
• The AAR and its applicability to passenger car wheel set assemblies
• A picture is worth a thousand words
APTA Wheel Set Assembly Standard WHY?
APTA Wheel Set Assembly Standard
Square peg vs. round hole.
DIFFERENCES Find six.
DIFFERENCES
1.Pipe is missing 2.Trash can is missing 3.Purse is missing 4.School vs. Academy 5.Plain vs. plaid jacket 6.Drawer is closed
Freight Car Wheel Set Assemblies
Freight Car Wheel Set Components AXLE
Freight Car Wheel Set Components AXLE
Freight Car Wheel Set Components WHEEL
Freight Car Wheel Set Components BEARINGS
Transit Car Wheel Set Assemblies
Transit Car Wheel Set Assemblies
Transit Car Wheel Set Assemblies
Transit Car Wheel Set Assemblies
Transit Car Wheel Set Assemblies
Transit Car Wheel Set Assemblies
Transit Car Wheel Set Components WHEELS
Transit Car Wheel Set Components WHEELS
Transit Car Wheel Set Components WHEELS
Transit Car Wheel Set Components WHEELS
Transit Car Wheel Set Components AXLES
Transit Car Wheel Set Components AXLES
Transit Car Wheel Set Components AXLES
Transit Car Wheel Set Components AXLES
Transit Car Wheel Set Components DRIVE DEVICES
Gears
Transit Car Wheel Set Components DRIVE DEVICES
Gear Units
Transit Car Wheel Set Components DRIVE DEVICES
Transmission
Transit Car Wheel Set Components BRAKES
Brake Discs
Transit Car Wheel Set Components BRAKES
Cheek Discs
Transit Car Wheel Set Components OTHER STUFF
Ground Rings
Transit Car Wheel Set Components OTHER STUFF
Adapters
Transit Car Wheel Sets Freight Car Wheel Sets
• Similarities … 1
• Differences … at least 6 !
INNOVATION
Pencil Sharpener Mounting
APTA Wheel Set Assembly Standard
PRESS On!
