# SDS Drill Head Assembly Dedra XDED7840.503 compatible SDS system

**URL:** https://aio.lv/en/product--dedra-xded7840503--12268822
**Data updated:** 2026-04-16 14:15 (EEST)
**Category:** Power Tools Accessories
**Manufacturer:** Dedra
**Manufacturer code:** XDED7840.503
**EAN:** 5900315030936
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 44.49 €
**Prices and availability valid until:** 2026-07-29 23:59
**Price without VAT (21%):** 36.77 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--dedra-xded7840503--12268822

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.07.2026 | free |
| Pickup points | 24.07.2026 | 1.89 EUR |
| Courier delivery to door | 24.07.2026 | 4.99 EUR |

## Summary description

Replacement SDS drill head assembly by Dedra, model XDED7840.503. Designed for SDS rotary hammer systems, it provides the interface between drill bits and the tool's chuck for secure bit retention and reliable torque transfer. Suitable for maintenance or repair of SDS-compatible demolition and drilling tools.

## Long description

Replacement SDS drill head assembly by Dedra, model XDED7840.503 compatible with SDS rotary hammer systems. This component serves as the connection between SDS drill bits and the tool's chuck, ensuring secure bit retention and reliable transfer of torque during drilling and chiselling tasks. It is intended for maintenance, repair, or refurbishment of SDS-compatible demolition and drilling tools where the original head assembly is worn or damaged.
Advantages
The Dedra SDS drill head assembly is manufactured to match the dimensional and functional requirements of standard SDS interfaces, providing a precise fit and consistent engagement with SDS shank bits. It restores reliable bit locking and reduces play between the bit and tool, which helps maintain drilling accuracy and efficient power transfer. The design focuses on robust contact surfaces to withstand repeated insertion and extraction of bits under load.
Suitable for
 Repairing or refurbishing SDS-compatible rotary hammers and demolition tools
 Replacing worn or damaged SDS bit retention components
 Workshops performing maintenance on power tools that use SDS shank bits
 Users who need to restore secure bit holding and consistent torque transfer
When it may not be suitable
This head assembly is designed specifically for SDS systems; it may not be compatible with other proprietary bit retention systems or non-SDS chucks. It is not a full replacement for other internal tool components such as the gearbox, piston, or motor; if issues stem from those parts, replacing the drill head assembly alone will not resolve them.
Key specifications
 Compatibility: SDS rotary hammer systems (standard SDS interface)
 Function: Bit retention and torque transfer between SDS bits and tool chuck
 Material characteristics: durable contact surfaces suitable for repeated use under load
 Application: maintenance and repair of SDS-compatible demolition and drilling tools
How to use
Turn off and unplug the power tool or remove its battery before starting any maintenance. Disassemble the tool according to the manufacturer’s service instructions to access the existing SDS head assembly, remove the worn component, and install the replacement assembly in the correct orientation. Ensure all retaining parts and springs are correctly seated and that any lubrication points are serviced as specified by the tool manufacturer. After reassembly, test the tool at low speed without load to confirm proper engagement and secure bit retention before resuming normal work.
What to consider before purchase
 Verify that your tool uses a standard SDS interface and is compatible with this type of head assembly
 Confirm that the issue is limited to the head assembly and not caused by internal gearbox or drive issues
 Check that you have the correct tools and technical skill to perform the replacement or consult a qualified service technician
Usage recommendations
Use OEM or equivalent-quality lubricants where recommended, inspect retaining springs and contact surfaces periodically, and replace the assembly if excessive wear or deformation is observed. Follow the tool manufacturer's maintenance schedule to ensure safe and reliable operation.

## FAQ

### How much does the SDS Drill Head Assembly Dedra XDED7840.503 cost, and is it available for purchase?

The price is 44.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 20 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 21.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Dedra products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Dedra service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12268822/68186655_large.webp