GRIFFIN WHEELS

Online spec sheets:

Griffin wheels are available in these sizes:

•	28" for low-deck cars
•	33" for 70-ton capacity cars
•	36" for 100-ton capacity cars
•	38" for 125-ton capacity cars
•	40" and 42" for diesel locomotives

Manufacturing, re-heating, rim spraying
Steel for all Griffin wheels is melted in electric arc furnaces. Extreme care is taken to regulate temperature gradients to prevent internal defects.

After uniform re-heating of the wheels to refine the grain, treads and flanges are rim sprayed to increase metal hardness in these areas.

Then wheels are conveyed to a draw furnace to further reduce stresses.

Notes on testing
Steel used in Griffin wheels conforms to the rigid set of chemical requirements shown in the table. Test specimens are taken and analyzed during steel preparation, as well as at the time of the pour. Exact chemical composition, including identifying records, is available to purchasers or their representatives.

Hardness measurements are made on the front face of the rim, after the surface is properly prepared to ensure an accurate determination.

Refer to separate spec sheets
The exact dimensions and designs for wheels used in interchange service are prescribed by the AAR. Data for diesel, and one-wear wheels are given on separate spec sheets. They are a guide to finding the correct and most economical choice of Griffin wheels for your service.