| AU | Standard Efficient, Hollowshaft, Aluminum |
| CT | High Efficiency, Hostile Duty |
| CTE | Premium Efficient, Hostile Duty |
| D | Standard Efficiency, Steel Frame |
| FCT | Energy Efficient, Hostile Duty |
| FD | Energy Efficient |
| FHP | Fractional Horsepower |
| FR | Energy Efficient |
| FUT | Enegy Efficient, Unimount |
| HU | Standard Efficient, Hollowshaft, Cast Iron |
| HUS | Premium Efficient, Hollowshaft, Cast Iron |
| RU | Standard Efficient, Hollowshaft, Cast Iron |
| TCE | Premium Efficient, Corro-Duty |
| TU | Standard Efficient, Hollowshaft, Aluminum |
| UT | High Efficiency, Aluminum Frame |
| UT1 | Energy Efficient, Unimount-JP |
| UT4 | Energy Efficient, Unimount-JM |