Timco Pro SDS Max hammer drill bit for drilling large diameter holes in concrete, stone and masonry. Available in a wide range of diameters and lengths to suit large rotary hammers with SDS Max tool holders.
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Size
Price
QTY
12 x 340mm
£15.60£18.72
12 x 540mm
£19.37£23.24
14 x 340mm
£16.33£19.60
14 x 540mm
£20.40£24.48
16 x 340mm
£17.32£20.78
16 x 540mm
£22.44£26.93
18 x 340mm
£20.19£24.23
18 x 540mm
£24.47£29.36
18 x 690mm
£27.04£32.45
18 x 920mm
£36.53£43.84
20 x 340mm
£22.44£26.93
20 x 540mm
£26.34£31.61
20 x 690mm
£29.07£34.88
20 x 920mm
£39.09£46.91
22 x 340mm
£25.30£30.36
22 x 540mm
£30.65£36.78
22 x 690mm
£34.70£41.64
22 x 920mm
£47.27£56.72
24 x 340mm
£26.82£32.18
24 x 540mm
£39.81£47.77
25 x 340mm
£27.59£33.11
25 x 540mm
£40.82£48.98
25 x 690mm
£45.41£54.49
25 x 920mm
£53.13£63.76
26 x 340mm
£29.64£35.57
26 x 540mm
£44.92£53.90
28 x 340mm
£30.62£36.74
28 x 540mm
£47.45£56.94
30 x 340mm
£35.50£42.60
30 x 540mm
£54.61£65.53
32 x 340mm
£38.79£46.55
32 x 540mm
£62.28£74.74
The Timco Pro SDS Max hammer drill bit is built for the kind of work that punishes cheaper bits quickly — large diameter holes through concrete, stone, and hard masonry. Whether you’re on a groundworks job, installing steel lintels, or running services through a block wall, this bit is designed to keep moving without jamming mid-hole. That matters when you’re three floors up with a heavy rotary hammer.
The SDS Max shank system is the standard for larger rotary hammers, giving you full hammer energy transfer without the bit slipping or rattling loose. This Timco Pro bit takes advantage of that with a narrow angle 4-cutter head, which significantly reduces the chance of jamming in aggregate or mixed masonry. Anyone who has had a bit bind in a concrete block and sent the hammer spinning will appreciate what that actually means in practice.
Why the Timco Pro SDS Max Drill Bit Performs Under Pressure
Timco have shot peened these bits for added strength and fatigue resistance. Shot peening is a cold working process that compresses the surface of the steel, making it more resistant to cracking under the repeated impact loads that SDS Max drilling generates. It’s not something you’ll see advertised on every budget bit, and it makes a genuine difference over a long working day.
The tungsten carbide tip is high quality and ground to a geometry that balances cutting speed with tip life. You’re not going to burn through a carbide tip on a single job unless you’re drilling dry through reinforced concrete all day. For standard masonry, block, and stone work, you can expect consistent performance across multiple holes before seeing any real drop-off.
Diameter and Length Range
The range runs from 12mm right up to 32mm diameter, with lengths from 340mm through to 920mm. That covers everything from short access holes to deep core runs through thick structural elements. Pick the diameter you need and the length that gets you through the material without having to over-reach.
Pro Tip: When drilling deep holes in concrete with an SDS Max bit, withdraw the bit every 50mm or so to clear dust from the flutes — clogged flutes dramatically reduce penetration rate and put unnecessary heat through the carbide tip.
These bits are used wherever large diameter holes need to be drilled through concrete, natural stone, or masonry using a large rotary hammer. Groundworkers use them for anchor bolt holes and service penetrations. Structural steel fixers rely on them for chemical anchor installations in reinforced concrete. Building contractors run them through cavity walls and block partitions for conduit, pipes, and cable runs. The longer 690mm and 920mm lengths are particularly useful for drilling through thick walls in a single pass without needing to work from both sides.
Best For
Drilling concrete, block and masonry
Anchor bolt and chemical anchor holes
Service penetrations through walls
Deep hole drilling in structural elements
Large rotary hammer applications
Compatible With
SDS Max rotary hammers
All major SDS Max tool holders
Concrete
Natural stone
Dense block and brick masonry
Key Specifications
Tungsten carbide tip
Narrow angle 4-cutter head
Shot peened steel for impact fatigue resistance
Diameters: 12mm to 32mm
Lengths: 340mm, 540mm, 690mm, 920mm
Not suitable for: Not suitable for use in SDS Plus rotary hammers — the SDS Max shank is larger and will not fit. Not intended for drilling timber, steel, or non-masonry materials.
Fit the bit securely into the SDS Max chuck until you feel it click and seat properly. Check it is locked before starting. Select hammer drill mode on your rotary hammer, not pure rotation.
Apply steady forward pressure and let the hammer action do the work. Forcing the bit harder than necessary does not increase speed and will accelerate wear. On deeper holes, withdraw the bit periodically to clear debris from the flutes and keep drilling efficient. When drilling overhead or into reinforced concrete, keep a firm two-handed grip on the hammer at all times.
Select the correct diameter and length for the hole required
Insert the SDS Max shank fully into the hammer chuck until it clicks into place
Set the rotary hammer to hammer drill mode
Mark or align your drilling position and apply light initial pressure to locate the tip
Drill at steady pace with consistent forward pressure, allowing the bit to cut at its own rate
Withdraw the bit every 50mm on deep holes to clear dust and debris from the flutes
On completion, allow the bit to cool before handling or storing
Will this bit fit my SDS Plus hammer drill?
No. SDS Max and SDS Plus are different shank systems and are not interchangeable. SDS Max shanks are larger in diameter and are designed for heavier rotary hammers. If your drill uses SDS Plus bits, you need a different range.
What is the advantage of the 4-cutter head over a standard 2-cutter design?
A 4-cutter head cuts a more balanced, symmetrical hole and is much less prone to jamming when the bit hits aggregate or a harder inclusion in the concrete. It distributes the cutting load more evenly, which also reduces the stress on the carbide tip and helps the bit track straight in harder materials.
The Timco Pro SDS Max hammer drill bit uses a high-quality tungsten carbide tip brazed to a steel body that has been shot peened to improve surface compressive strength and resistance to impact fatigue. The narrow angle 4-cutter geometry is engineered to reduce jamming in mixed aggregate concrete and dense masonry. The SDS Max shank conforms to the standard SDS Max interface used across all major rotary hammer manufacturers.
12 x 340mm, 12 x 540mm, 14 x 340mm, 14 x 540mm, 16 x 340mm, 16 x 540mm, 18 x 340mm, 18 x 540mm, 18 x 690mm, 18 x 920mm, 20 x 340mm, 20 x 540mm, 20 x 690mm, 20 x 920mm, 22 x 340mm, 22 x 540mm, 22 x 690mm, 22 x 920mm, 24 x 340mm, 24 x 540mm, 25 x 340mm, 25 x 540mm, 25 x 690mm, 25 x 920mm, 26 x 340mm, 26 x 540mm, 28 x 340mm, 28 x 540mm, 30 x 340mm, 30 x 540mm, 32 x 340mm, 32 x 540mm
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