SDS-Max hammer drill bit DeWalt DT9421-QZ

What it is

The DeWalt DT9421-QZ SDS-Max hammer drill bit is designed for very deep holes in masonry, with a diameter of 22 mm, a working length of 800 mm and an overall length of 96 cm. The carbide-tipped head and four-cutter geometry ensure accurate centring and wear resistance along the whole length of the bit, while the SDS-Max shank ensures optimal transmission of the percussion energy. It weighs 1.427 kg and is supplied in a single pack with a tag.

An SDS-Max bit is a carbide-tipped bit for rotary hammers with an SDS-Max chuck, for large-diameter, deep holes in concrete and masonry.

What it is for

Used for drilling reinforced concrete, in hammer or rotary hammer mode and for drilling solid and hollow masonry, clay brick and blocks.

How to use it

Clean and lightly grease the shank, insert it into the chuck until it locks and select hammer drilling. Drill with the hammer held in line with the hole, letting the machine's weight do the work without pushing, and withdraw the bit frequently to clear the dust. If you hit a reinforcing bar, stop and move the hole; do not cool a hot bit in water.

Where it is used

• Residential construction
• Building services
• Renovation

Technical data

• Diameter (mm): 22
• Head type: Carbide tooth
• Pgm: Sì
• Width (cm): 4,5
• Height (cm): 4
• Working length (mm): 800
• Weight (kg): 1.427
• Masonry drilling type: SDS
• Application material: Masonry
• Shank connection: SDS MAX
• Length (cm): 96
• Pack: Label

Who it is for

Designed for electricians, plumbers, bricklayers and construction workers.

Related products

• SDS-Max hammer drill bit DeWalt DT9422-QZ
• SDS-Max hammer drill bit DeWalt DT9420-QZ
• Combination hammer SDS-Max 52mm DeWalt D25773K-QS — from the category Combination Hammers
• L-shaped rotary hammer SDS-Plus, 3 modes, 30mm, 3.5J, 950W, with AVC - quick-release dual chuck D25334K-QS DeWalt — from the category Rotary Hammers
• Resin Ac100-pro, vinyl ester, styrene-free, DeWalt DFC1230050 — from the category Chemical Anchors
• Browse the whole category: SDS Max Drill Bits

Before you order

In your request, please state the length, the diameter, the connection type and the quantities required, so we can give you the right quotation first time.

For prices and availability, request a quote from AMES Srl: we will reply with our quotation, delivery times and, where needed, an equivalent technical alternative.