- 98% satisfied customers
- 72h delivery
- 30 dni na zwrot
Description
| Technical Data | |
|---|---|
| Type | 9833 |
| Size | ER 40 |
| Standard | DIN 6499 (ISO 15488) |
| DIN designation | D40 |
| Outside Diameter D | 63 mm |
| Height H | 25.5 mm |
| Thread | M50×1.5 |
| Collet Clamping Range | 3 – 26 mm |
| Tightening Torque | 110 – 140 Nm |
ER 40 nut – for a DIN 6499 collet chuck for milling cutters and drills
The type 9833 ER 40 nut is designed for precise clamping of tools with large shank diameters in collet chucks. Hardened steel construction with a hardness of 45-50 HRC ensures dimensional stability and resistance to repeated tightening at torques of up to 140 Nm. The M50×1.5 thread conforming to DIN 6499 (ISO 15488) ensures full compatibility with ER 40 chucks and collets with a clamping range of 3 to 26 mm. The outside diameter of 63 mm and height of 25.5 mm correspond to the D40 designation and fit all ISO-standard ER 40 chucks.
Technical specifications of the ER 40 nut
- Secure clamping of large tools thanks to the M50×1.5 thread of class 6H, which withstands the axial and radial loads typical of heavy machining
- Resistance to wear and deformation provided by through-hardening the steel to 45-50 HRC, resulting in a service life of thousands of tool change cycles
- DIN 6499 (ISO 15488) standard ensuring interchangeability of the nut with ER 40 chucks from all manufacturers using the international collet clamping standard
- The ER 40 collet clamping range of 3 to 26 mm covers the shank diameters of end mills, large-diameter drills, and special roughing tools
- The design with face slots for an ER 40 wrench or hook spanner allows quick, safe tool changes directly on the machine spindle
- The black oxide finish provides corrosion protection in workshop environments exposed to emulsion coolants and cutting oils
The ER 40 nut is used in toolrooms, CNC machining centers, and conventional milling machines equipped with large collet chucks. Tightening to 110-140 Nm using a torque wrench achieves radial runout below 0.015 mm. Regular removal of chip residue from the thread and internal taper, along with lubrication every 200-300 cycles, extends the service life of the entire ER clamping system.
Frequently asked questions
The ER 40 nut works with collets ranging from 3 to 26 mm. The maximum tool shank diameter is therefore 26 mm, covering most end mills and drills used in industrial machining.
The correct tightening torque for the ER 40 nut is 110-140 Nm. A torque wrench must be used to avoid deforming the collet and maintain radial runout below 0.015 mm.
A dedicated ER 40 wrench or a hook spanner matching the face slots is recommended for tightening the ER 40 nut. Using pliers or general-purpose wrenches risks damaging the slots and preventing proper tightening.
Product accessories
Collet Chuck 7617-40-100 ER-40 DIN69871-A
Reference: 0000009630 In stock < 10 items
€38.16
€46.93 brutto
Collet chuck 7626 40 100 ER40 MAS 403 BT
Reference: 0000012115 In stock > 10 items
€34.21
€42.08 brutto
Reviews
No customer reviews for the moment.
Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
Recommended for you
This website uses its own and third-party cookies to improve our services and show you advertising related to your preferences by analyzing your browsing habits. To give your consent to its use, press the Accept button.
Cookie preferences
Functional cookiesTechnical
Functional cookies are strictly necessary to provide the services of the shop, as well as for its proper functioning, so it is not possible to refuse their use. They allow the user to browse through our website and use the different options or services that exist on it.
Advertising Cookies
These are cookies that collect information about the advertisements shown to users of the website. They can be anonymous, if they only collect information about the advertising spaces shown without identifying the user, or personalised, if they collect personal information about the user of the shop by a third party, for the personalisation of these advertising spaces.
Analytics cookies
Collect information about the user's browsing experience in the shop, usually anonymously, although sometimes they also allow the user to be uniquely and unequivocally identified in order to obtain reports on the user's interests in the products or services offered by the shop.