How the order code is structured
A customised gear rack adds positions for material, accuracy, holes and special features after the standard code. The number of each segment below corresponds to the option table with the same number later on this page.
__ ZST M4 - 60×50×1820 -SL -C -5 -DX -sp
1__Quantity
2ZSTModel
3M4Pitch type
460×50×1820Size b×hk×L1
5-SLToothing
6-CMaterial / hardness
7-5Gear quality grade
8-DXHoles
9-spSpecial features
Free-input positions
- ① Quantity Enter the order quantity
- ④ Size Enter width×height×length (b×hk×L1, mm)
Options for each position
2Model
| Code | Description |
|---|---|
| ZST | Standard gear rack (with mounting holes) |
| MST | Short gear rack (without mounting holes, see end of page) |
3Pitch type
| Code | Description |
|---|---|
| M___ | Modular pitch |
| T___ | Metric pitch (mm) |
5Toothing
| Code | Description |
|---|---|
| -S | Helical (right) |
| -SL | Helical (left) |
| -G | Straight |
7Gear quality grade
| Code | Machining |
|---|---|
| -4, -5, -6, -7 | Ground |
| -8 | Milled, soft |
| -9 | Ground, nitrided |
| -10, -11 | Milled, induction hardened |
6Material and hardness
| Code | Material | Treatment |
|---|---|---|
| -C | 16MnCr5 | Case-hardened |
| -O | 16MnCr5 | Nitrided |
| -I | C45 | Induction hardened |
| -W | C45 | Soft |
| -M | 42CrMo4+QT | Induction hardened |
| -N | 42CrMo4+QT | Nitrided |
| -V | 42CrMo4+QT | Tempered |
| -H | X90CrMoV18 (stainless steel) | Through-hardened |
| -S | Special material | As per drawing |
8Hole options
| Code | Description |
|---|---|
| -D | With dowel and mounting holes (Fig. 1) |
| -OP | Without dowel holes (Fig. 2) |
| -OH | Without holes (Fig. 3) |
| -X | Half hole pitch (lx = ½ × l), can be combined with -D (e.g. -DX) |
9Special features
| Code | Description |
|---|---|
| -sp | Special features as per drawing |
Customised short gear rack (MST)
The short gear rack has no mounting holes, and its toothing code differs from the standard gear rack (right is -SR):
__ MST M4 - 60×50×200 -SR -sp
| Code | Description |
|---|---|
| MST | Short gear rack (without mounting holes) |
| -SL | Short gear rack, helical (left) |
| -SR | Short gear rack, helical (right) |
| -G | Short gear rack, straight |