Bosch Pro SDS MAX
Opening up concrete or drilling deep fixing holes? Bosch Professional SDS Max bits suit heavy rotary hammers.
For concrete crews, groundworkers and fitters, the right drill bit or chisel means less time fighting the material. Check your machine's holder, drilling capacity and operating modes before choosing the diameter, working length and cutting profile for the job.
What Are Bosch Professional SDS Max Bits Used For?
- Drill anchor holes in concrete foundations and structural walls with Bosch Professional SDS Max Drill Bits, matching the diameter and depth to the fixing specification.
- Break out damaged concrete around repair areas with Bosch Professional SDS Max Chisel Bits, choosing a pointed or flat profile to suit the breakout.
- Open service routes through thick masonry using a drill bit with enough working length to clear the wall, after checking for concealed services and structural restrictions.
- Strip tiles and bedding from solid floors with a suitable SDS Max tile chisel, keeping the blade angle shallow to limit damage to the substrate.
Choosing the Right Bosch Professional SDS Max Bits
Start with the machine and the hole or breakout you actually need; buying the biggest bit only adds load if the job does not call for it.
1. Check the Holder and Operating Mode
If your machine has an SDS Plus holder, these will not fit. Check the machine specification before ordering, and make sure it has rotary hammer mode for drilling or hammer-only mode for chiselling. If you need another fitting, check Bosch Professional SDS Bits and Attachments rather than trying to force a mismatch.
2. Match Diameter and Working Length
For anchors, buy the diameter specified by the fixing manufacturer. For through-holes, check working length rather than overall length: the shank does not add drilling reach. Stay within your hammer's recommended capacity, especially with long or large-diameter bits.
3. Choose the Cutting Profile for the Material
Use a pointed chisel to start localised breakout, a flat chisel for controlled removal, and a suitable tile chisel for working beneath floor coverings. For reinforced concrete drilling, choose a bit explicitly rated for that material, but do not cut reinforcement without approval.
4. Buy a Set Only if the Contents Earn Their Place
If you need a Bosch Professional SDS Max set, check every included diameter, length and chisel profile. A set makes sense for varied refurbishment work; repeated anchor drilling usually calls for the exact specified size and a spare, not several sizes you will never use.
Who Uses Bosch Professional SDS Max Bits?
Groundworkers and concrete repair crews use SDS Max drill bits and chisels for deep fixings, localised breakout and removing defective material. Mechanical installers reach for longer bits when routing services through substantial walls, while refurbishment teams use suitable wide chisels to lift tiles and bedding. This is kit for heavier rotary hammers and breakers, not the SDS Plus combi drill kept for everyday wall plugs.
The Basics: Understanding SDS Max
SDS Max describes the accessory fitting, not just the size of hole it makes. The holder lets the bit move lengthways under hammer impact while retaining it securely.
1. A Fitting for Heavier Hammer Work
An SDS Max shank is approximately 18mm in diameter, compared with 10mm for SDS Plus. The larger fitting is used on heavier machines for demanding drilling and chiselling. The two systems are not directly interchangeable.
2. Drilling and Chiselling Need Different Modes
A masonry drill bit needs rotation and hammer action to cut a round hole. A chisel works with hammer action only. An SDS Max demolition hammer may accept the fitting but lack rotation, so it cannot drill with a conventional masonry bit.
Accessories for SDS Max Drilling and Breakout
Sort dust control and shank care before starting; both matter when the hammer is working hard.
1. Compatible Dust Collection Attachments
Concrete drilling produces hazardous dust. Check Bosch Professional Dust Extractor Accessories for a collection attachment compatible with your bit diameter, machine and suitable extractor. A connection that fits the hose is not enough if the attachment cannot collect dust at the hole.
2. Manufacturer-Specified Shank Grease
Clean and lubricate the shank as your hammer's manual specifies to reduce wear at the holder. Check Bosch Professional SDS Max Other Bits and Accessories for supporting items, and confirm lubricant suitability before use. Packing a dirty holder with extra grease only traps grit.
Choose the Right Bosch Professional SDS Max Bits for the Job
Match the cutting end and working dimensions to the task.
| Your Job | Bit or Chisel Type | Key Features |
|---|---|---|
| Drilling concrete anchor holes | SDS Max masonry drill bit | Fixing-specified diameter, sufficient working length and suitability for the concrete. |
| Making service penetrations through thick walls | Long SDS Max masonry drill bit | Working length exceeding wall thickness and diameter within the machine's capacity. |
| Starting localised concrete breakout | Pointed chisel | Concentrated impact at the tip, used in hammer-only mode. |
| Removing concrete edges or masonry | Flat chisel | Blade width matched to the removal area and available impact energy. |
| Lifting floor tiles and bedding | Suitable tile chisel | Wide cutting edge and a profile that allows a shallow working angle. |
Common Buying and Usage Mistakes
- Ordering SDS Max for an SDS Plus machine leaves you with a bit that will not fit. Check the holder designation, not just the brand on the hammer.
- Buying by overall length can leave a through-hole unfinished. Measure the required drilling depth against the stated working length.
- Leaning heavily on the hammer does not replace a sound cutting tip. Use controlled feed pressure, clear debris as instructed and check the bit if progress drops.
- Assuming a reinforced-concrete-rated bit gives permission to cut rebar risks structural damage. Locate reinforcement and services, and get approval before drilling through either.
- Fitting a chisel without switching off rotation risks uncontrolled movement. Select hammer-only mode and set the chisel position as the machine manual directs.
SDS Max vs SDS Plus vs Standard Chuck Bits
SDS Max for Heavy Drilling and Breakout
Choose SDS Max when the hole size, depth or breakout calls for a heavier hammer. It suits substantial concrete work, but the machine and accessories are bulkier than you need for routine wall-plug holes.
SDS Plus for Everyday Installation Work
SDS Plus is generally the more manageable choice for repeated smaller fixing holes and lighter chiselling with a suitable machine. It is not a direct substitute for SDS Max when the job exceeds the hammer's rated capacity.
Standard Chuck Bits for Conventional Drills
Straight-shank masonry bits suit conventional hammer drills for lighter masonry tasks. They do not use the SDS sliding-shank system and cannot replace SDS Max bits for heavy rotary-hammer drilling or chiselling.
Maintenance and Care
Clean the Shank Before Fitting
With the machine isolated, wipe grit and old contamination from the shank. Apply only the lubricant and quantity specified for the hammer; dirt carried into the holder accelerates wear.
Check Tips and Cutting Edges
Inspect drill heads for chipped or missing carbide and chisels for cracks, distortion or heavy wear. Replace damaged bits. Only resharpen a chisel where its manufacturer permits it and provides a suitable method.
Let Hot Accessories Cool
Bits and chisels can be hot after sustained work. Allow them to cool safely before handling or storage, and do not quench them in water to speed things up.
Store Dry and Protect the Cutting Ends
Remove drilling residue and dry accessories before putting them away. Use a case or rack so carbide heads are not knocked against loose steel tools in the van.
Your Bosch Professional SDS Max Range, Ready to Go
ITS stocks the full Bosch Professional SDS Max range, covering drill bits, chisels and supporting accessories so you can match the diameter, working length and cutting profile to the job. Stock is held in our own warehouse, ready for next-day delivery. Check the item's live availability and delivery options before ordering for a booked job.
Bosch Professional SDS Max FAQs
What is SDS max used for?
SDS Max is used for heavier hammer drilling and chiselling in concrete, masonry and suitable stone. Typical jobs include deep anchor holes, service penetrations and localised concrete breakout. The accessory determines the task, and the machine must provide the correct operating mode.
What is the difference between SDS plus and SDS max?
SDS Plus uses a roughly 10mm shank, while SDS Max uses a roughly 18mm shank with a different locking arrangement. SDS Plus generally suits lighter installation work; SDS Max is used on heavier hammers for more demanding drilling and breakout. Their accessories do not fit directly into each other's holders.
Can you use SDS max in a normal drill?
No. A conventional three-jaw drill chuck cannot correctly hold and operate an SDS Max accessory. You need a compatible SDS Max machine, with rotary hammer mode for masonry drill bits or hammer-only mode for chisels.
Are Bosch sds max any good?
Bosch Professional SDS Max accessories are intended for professional drilling and demolition work, but choose by the individual specification rather than the badge alone. Check material suitability, head design and dimensions. A worn bit, an underpowered hammer or excessive feed pressure will still give poor results, regardless of brand.
Where are Bosch tools made?
Bosch manufactures across several countries; there is no single country of manufacture for every tool or accessory. Bosch is a German company, but that does not mean every SDS Max bit is German-made. Check the specific product's origin marking or packaging if country of manufacture matters to your purchase.
