# Lock cylinder SYNOLOGY D6 30×30 mm Nickel — replacement door cylinder

**URL:** https://aio.lv/en/product--synology-78741--11920834
**Data updated:** 2026-03-10 09:26 (EET)
**Category:** Home & DIY Accessories
**Manufacturer:** SYNOLOGY
**Manufacturer code:** 78741
**EAN:** 4003318510151
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 21.49 €
**Prices and availability valid until:** 2026-08-05 23:59
**Price without VAT (21%):** 17.76 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--synology-78741--11920834

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

Replacement lock cylinder SYNOLOGY D6 with 30×30 mm dimensions in nickel finish. Designed as a door cylinder for compatible locking mechanisms, this component provides the core mechanical operation of a cylinder lock. Suitable for residential and light commercial doors where a 30×30 mm double or single profile cylinder is required.

## Long description

Replacement lock cylinder SYNOLOGY D6 30×30 mm in a nickel finish designed for use in compatible door locking mechanisms. This 30×30 mm cylinder is a compact, symmetrical profile intended to provide the core mechanical operation of a door lock, enabling secure latching and key operation in residential and light commercial doors that accept a 30×30 mm double or single profile cylinder.
Advantages
The SYNOLOGY D6 cylinder offers a standardized 30×30 mm profile that simplifies installation and replacement in existing locks. Its nickel finish provides basic corrosion resistance and a neutral appearance that matches a range of door hardware. The cylinder is produced to deliver smooth key operation and reliable mechanical engagement with compatible lock cases.
Suitable for
 Residential external and internal doors with compatible 30×30 mm cylinder cutouts
 Light commercial doors and office doors requiring a standard profile cylinder
 Replacement projects where an existing 30×30 mm cylinder must be swapped without modifying the door or lock case
Key specifications
 Profile dimensions: 30×30 mm (symmetrical)
 Finish: nickel
 Function: mechanical cylinder for key operation (double or single profile use where applicable)
 Compatibility: designed for standard euro-style door lock cases accepting 30×30 mm cylinders
 Application: suitable for residential and light commercial door installations
How to use
Before installation, confirm the door and lock case accept a 30×30 mm cylinder and that the cam of the new cylinder aligns with the lock mechanism. Remove the retaining screw from the lock case, withdraw the existing cylinder, insert the SYNOLOGY D6 until the cam engages with the internal mechanism, and secure it with the retaining screw. Test key insertion, rotation, and latch operation with the door in both open and closed positions to ensure correct alignment and smooth operation.
Usage recommendations
For long-term performance, apply a graphite-based lubricant to the keyway periodically and avoid oil-based lubricants that attract dust and debris. If the cylinder is used on an external door, check the fit and sealing around the cylinder to reduce moisture ingress. Replace the cylinder if you notice excessive play, difficulty turning the key, or signs of internal wear.

## FAQ

### How much does the Lock cylinder SYNOLOGY D6 30×30 mm cost, and is it available for purchase?

The price is 21.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 30 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 27.07.2026 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 SYNOLOGY 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 SYNOLOGY 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/11920834/67352441_large.webp