what is it? - apta.com for the assembly of wheel sets used in passenger service . apta wheel set...

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


When?


This year.


• Draft of standard is nearly complete

• Next committee meeting in June

• Expect completion at that meeting

• Out for comments by the end of summer


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


• Origin of the AAR (Association of American Railroads)

• Interchange rules

• Current status

• Use by carbuilders and transit authorities


• The AAR and its applicability to passenger car wheel set assemblies

• A picture is worth a thousand words


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 WHEEL

Freight Car Wheel Set Components BEARINGS

Transit Car Wheel Set Assemblies

Transit Car Wheel Set Components WHEELS

Transit Car Wheel Set Components AXLES

Transit Car Wheel Set Components DRIVE DEVICES

Gears


Gear Units


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


PRESS On!

what is it? - apta.com for the assembly of wheel sets used in passenger service . apta wheel set...

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