أداة (لقمة) مثقاب (Dewalt) نوع (SDS+) قياس (22MMX400MMX450MM)

Diameter: 22 mm. Bit length: 400 mm. Working depth/tip length: 450 mm. Shank: SDS+ for quick, secure bit changes. Material: high‑grade alloy steel with a hardened working core and a patented ring insert for secure chuck engagement. Recommended use is with SDS+ hammer drills.

1) Ensure the drill is off and unplugged. 2) Insert the bit into the SDS+ chuck until it is fully seated and the ring insert locks it in place. 3) Set the drill to hammer/rotation mode and start at a low speed with light, steady pressure. 4) Increase speed gradually and avoid forceful feed to prevent bit wander or overheating. Periodically pause to cool if drilling deep holes.

Ideal for drilling deep holes in concrete, masonry, brick walls and similar hard materials. The long 450mm tip length helps reach deep or recessed areas, while the 22mm diameter suits medium‑to‑large bore tasks in structural or installation work.

Durability comes from a high‑grade alloy steel construction, a hardened core for wear resistance, and a patented ring insert that ensures a secure fit in the drill chuck. The SDS+ design also helps distribute impact loads efficiently during hammer drilling.

Avoid overheating by drilling at appropriate speeds and using steady, moderate pressure. Allow cooling periods during long holes. Clean the bit after use to remove dust and debris and store it in a dry, protective case to prevent corrosion and edge damage.

Wear eye protection and gloves, secure the workpiece, and keep bystanders away. Use proper PPE, ensure the bit is fully seated in the SDS+ chuck, and avoid side loads or twisting the bit. Work in a well-ventilated area and follow your drill’s safety guidelines.

For quick comparisons, you can explore similar 22mm SDS+ options on Fepy: Bosch 22mm SDS+ bit (22mm x 400mm) at https://www.fepy.com/product/bosch-sds-plus-drill-bit-22mm-400mm and Makita 22mm SDS+ bit (22mm x 400mm) at https://www.fepy.com/product/makita-sds-plus-drill-bit-22mm-400mm. These alternatives help you evaluate price, coatings, and build quality while staying on Fepy.

Yes, the 450mm tip length is designed for deep holes in concrete and masonry. Use a steady feed, moderate speed, and pause to cool if you're drilling deep holes to prevent overheating and maintain cutting performance.

This bit uses an SDS+ shank and is compatible with SDS+ rotary hammer drills. It won't fit non‑SDS+ chucks, so confirm your tool's shank type before use.

If you’re not satisfied, you can typically return the item within the standard window for unopened or gently used items in original packaging. Check the specific term on the Fepy return page for the exact timeframe and conditions.

Store in a dry place, preferably in a protective case or sleeve to prevent edge nicks. Keep it away from moisture and corrosive environments, and avoid placing heavy objects on top of it to prevent warping or damage to the cutting edges.