| Class | Rack Type | Quality | Total pitch  error  (
		±µm/m) | Applications | Helical  Toothed | Straight  Toothed | 
|---|---|---|---|---|---|---|
| Ultra-High  Precision Rack  (
		UHPR) | hardened    &  ground | 3 | 12 | High precision machine tools  with electrical preload | Series 48 | Series 46 | 
| case hardened  &  ground | 5 | 26 | Machine tools  Lifting axes  Multiple pinion contact | Series 29 | Series 28 | |
| High  Precision  (
		HPR) | hardened  &  ground | 6 | 36 | Wood working machines  Plastic working machines  Aluminium working machines  Machine tools, water cutting machines  Plasma cutting machines | ||
| 7 | 52 | Wood working machines  Linear axes with high requirement for  smooth running | Series 29 | Series 28 | ||
| Precision  Rack  (
		PR) | hardened  &  ground | 8 | 60 | Portals  Handling  Linear axes | Series 39 | Series 34 | 
| milled   &  quenched +  tempered | 8 | 100 | Series 38 | Series 33 | ||
| Basic  Rack  (
		BR) | milled | 9 | 150 | Linear axes with low load   Feed units for adjustment  Lifting axes, handling, welding robots | Series 47 | Series 25 | 
| hardened | 10 | 200 | Series 39 | Series 34 |