► Helical teeth racks are ideal for applications where the noise level has to be low.
► Helical racks generate a radial load on the shaft or your gearbox so you should consider a helical gearbox, in order to preserve its bearings.
Click on the family reference for ordering codes, dimensions and drawings.
For straight teeth lines, click on the "straight racks" button above.
| Family | HAI6 | HBI6 | HCI6 | HAI7 | HBI7 | HCI7 |
|---|---|---|---|---|---|---|
|
Precision class |
DIN 6 |
DIN 6 |
DIN 6 |
DIN 7 |
DIN 7 | DIN 7 |
|
Steel |
C45 |
40Cr |
42CrMo |
C45 |
40 Cr | 42CrMo |
|
Heat treatment |
Induction |
Induction |
Induction |
Induction |
Induction | Induction |
|
Surface Hardness (HRC) |
>50 |
>52 |
>54 |
>50 |
>52 | >54 |
| Elastic resistance (Re), in N/mm² | >415 | >850 | >980 | >415 | >850 | >980 |
|
Teeth |
Ground |
Ground |
Ground |
Ground |
Ground | Ground |
|
Sides |
Ground |
Ground |
Ground |
Ground |
Ground | Ground |
|
Bottom |
Ground |
Ground |
Ground |
Ground |
Ground | Ground |
| Family | HAS7 | HAS8 | HAS9 | HAS10 |
|---|---|---|---|---|
|
Precision class |
DIN 7 |
DIN 8 |
DIN 9 |
DIN 10 |
|
Steel |
C45 |
C45 |
C45 |
C45 |
|
Heat treatment |
- |
- |
- |
- |
|
Surface hardness (HRC) |
<12 | <12 | <12 | <12 |
| Elastic resistance (Re), in N/mm² | >415 | >415 | >415 | >415 |
|
Teeth |
Milled |
Milled |
Milled |
Milled |
|
Sides |
Ground |
Milled |
Milled |
Rough |
|
Bottom |
Ground |
Ground |
Milled |
Milled |
| Family | HAQ7 | HBQ7 | HCQ7 | HAQ8 | HBQ8 | HCQ8 | HAQ9 | HBQ9 | HCQ9 |
|---|---|---|---|---|---|---|---|---|---|
|
Precision class |
DIN 7 | DIN 7 | DIN 7 |
DIN 8 |
DIN 8 | DIN 8 |
DIN 9 |
DIN 9 | DIN 9 |
|
Steel |
C45 | 40Cr | 42CrMo |
C45 |
40 Cr | 42CrMo |
C45 |
40 Cr | 42CRMo |
|
Heat treatment |
Quench | Quench | Quench |
Quench |
Quench | Quench |
Quench |
Quench | Quench |
|
Surface hardness (HRC) |
>15 | >20 | >20 |
>15 |
>20 | >20 |
>15 |
>20 | >20 |
| Elastic resistance (Re), in N/mm² | >415 | >850 | >980 | >415 | >850 | >980 | >415 | >850 | >980 |
|
Teeth |
Milled | Milled | Milled |
Milled |
Milled | Milled |
Milled |
Milled | Milled |
|
Sides |
Ground | Ground | Ground |
Milled |
Milled | Milled |
Milled |
Milled | Milled |
|
Bottom |
Ground | Ground | Ground |
Ground |
Ground | Ground |
Milled |
Milled | Milled |
Note: "Induction" stands for "high frequency hardening".
| mily | HAI8 | HBI8 | HCI8 | HAI9 | HBI9 | HCI9 | HAI10 | HBI10 | HCI10 |
|---|---|---|---|---|---|---|---|---|---|
|
Precision class |
DIN 8 | DIN 8 |
DIN 8 |
DIN 9 | DIN 9 | DIN 9 | DIN 10 | DIN 10 | DIN 10 |
|
Steel |
C45 | 40Cr |
42CrMo |
C45 | 40Cr | 42CrMo | C45 | 40Cr | 42CrMo |
|
Heat treatment |
Induction | Induction |
Induction |
Induction | Induction | Induction | Induction | Induction | Induction |
|
Surface hardness (HRC) |
>50 | >52 |
>54 |
>50 | >52 | >54 | >50 | >52 | >54 |
| Elastic resistance (Re), in N/mm² | >415 | >850 | >980 | >415 | >850 | >980 | >415 | >850 | >980 |
|
Teeth |
Milled | Milled |
Milled |
Milled | Milled | Milled | Milled | Milled | Milled |
|
Sides |
Milled | Milled |
Milled |
Milled | Milled | Milled | Milled | Milled | Milled |
| Bottom | Ground | Ground | Ground | Milled | Milled | Milled | Milled | Milled | Milled |
| Finish | Black oxide | Black oxide | Black oxide | Black oxide | Black oxide | Black oxide | Black oxide | Black oxide | Black oxide |
©RECKON DRIVES INTERNATIONAL 2020
