# Diamond core drill bit HOGERT HT7D284 28 mm for drilling hard materials

**URL:** https://aio.lv/en/product--hogert-ht7d284--11679666
**Data updated:** 2026-02-16 07:09 (EET)
**Category:** Drill Bits
**Manufacturer:** HOGERT
**Manufacturer code:** HT7D284
**EAN:** 5902801031328
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

Diamond core drill bit HOGERT HT7D284 with a 28 mm cutting diameter. Designed for drilling hard materials such as tile, ceramic, stone and grout. The diamond cutting edge provides precise, clean holes and increased wear resistance. Suitable for use with rotary drills and drill stands for tile fitting, bathroom and kitchen installations and general repair work.

## Long description

Diamond core drill bit HOGERT HT7D284 28 mm is a specialist cutting tool engineered for creating precise circular holes in hard, brittle materials. With a 28 mm cutting diameter and a diamond-segmented cutting edge, this core bit is intended for use with rotary drills and drill stands. It delivers clean, burr-free holes in tile, ceramic, natural and engineered stone, and grout while offering improved wear resistance compared with conventional carbide bits.
Advantages
The diamond cutting edge ensures high cutting efficiency and consistent hole quality while reducing chipping on fragile surfaces. The 28 mm diameter provides a versatile size for pipe, fixture and fitting penetrations. Designed for compatibility with standard drill chucks and drill stands, the bit offers reliable concentricity and straight drilling when used with appropriate drill guides. Its robust construction increases lifespan under intermittent professional or DIY use.
Suitable for
 Drilling holes in ceramic and porcelain tiles for plumbing and electrical fittings
 Creating openings in natural stone and engineered stone countertops
 Installing bathroom and kitchen fixtures where clean edges are required
 Repair and renovation tasks involving grout removal and hole cutting in hard materials
Key specifications
 Cutting diameter: 28 mm
 Cutting edge: diamond-segmented rim for hard material cutting
 Intended materials: tile, ceramic, stone, grout
 Use with: rotary drills and drill stands (appropriate chuck or arbor required)
 Typical applications: tile fitting, bathroom and kitchen installations, general repair work
How to use
Secure the drill bit in a compatible chuck or arbor and clamp the workpiece or use a drill stand to ensure perpendicular, stable drilling. For best results, begin drilling at low speed to establish the cutting path, then increase speed moderately while applying steady, light pressure. When drilling tiles or ceramics, use intermittent drilling with periodic withdrawal of the bit to clear debris and prevent overheating. Cooling with water or a suitable coolant during drilling extends tool life and improves cutting performance; ensure electrical safety when using liquids near powered tools.
Usage recommendations
Use appropriate personal protective equipment, including safety glasses, gloves and a dust mask. Match drill speed and feed to the material hardness and avoid excessive force. For brittle tiles, consider backing the tile with sacrificial material to reduce chipping. Inspect the bit regularly for wear and replace when diamond segments are worn to maintain hole quality.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. 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 HOGERT 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 HOGERT 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

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