SDS Plus vs SDS Max Difference Between Both Drill Bits Which is Best

A hammer drill is required for drilling through rigid materials like concrete, rock, brick, and many more. But a standard hammer drill isn’t up to the task. SDS drills with greater pounding strength can now be used. The SDS Plus vs SDS Max hammer drills is the finest on the market. Take note of the differences.

SDS max has five rails, whereas SDS plus has four. The SDS plus shank measures 10mm in diameter and ranges in length from 110mm to 1500mm. The maximum diameter of SDS is 18 millimeters, however. More stable than SDS plus, SDS max features a locking ball rail. 

What Mean By SDS 

SDS is commonly referred to as a “Slotted Drive Technology,” which was used by the industry when the system was invented. However, the acronym has a variety of interpretations that aren’t as well-known.

Steck-Dreh-Sitz, which means “Insert-Twist-Stay,” is the original German translation of this acronym. Therefore, in addition to “Slotted Drive Shaft” and “Special Direct System,” SDS can be interpreted as “Slotted Drive Shaft.”

Many people have varied interpretations of the acronym, but the concept is still explained adequately.

What are SDS Drill Bits 

To use an SDS drill bit, you must have a rotary hammer drill with an SDS drill attachment. It’s considerably simpler to chisel and drill through hard materials when using a drill bit with two rotating actions and properly pounding them down. In addition, the five components that make up an SDS bit set it apart from other types of bits.

In general, the shank functions like a standard drill bit. However, an SDS shank has four grooves that fit into the collar of a drill, whereas a drill bit shank has three grooves. Rotation is made possible because of the grooves that guide the bit into place. As a bonus, the grooves in the chuck allow the bit to travel, improving both hammering power and drilling torque.

The elevated part of the spiral known as the land of the bit is referred to as the land. Using a standard bit on the flute gives you the same results. During drilling or hammering, a piece of the material eliminates the dust and waste.

SDS drill bits have heads that break through concrete like a regular hammer drill bit. Bits are also used to break up concrete with their carbide tips. In addition, the head of the bit is usually brazed, making it considerably more durable than it otherwise would be.

How Do They Work

An SDS drill is the way to go if you’re looking for something more powerful and competent. Concrete, steel, and masonry are no match for this drill’s power. Using two separate forms of motion optimizes efficiency while allowing the operator to exert a significantly greater force on the items at hand.

Instead of using an external clutch mechanism, SDS drills utilize an integrated internal hammer mechanism. So it’s easy to see why a chuck has to be just as exceptional when looking at an SDS bit. An indent runs along one side of the bit shaft, which fits between two ball bearing slots in the chuck.

The hammer fires SDS bits forward and backward, resulting in a more precise and accurate motion than a regular hammer drill. This is because the chucks, rather than the bits, travel back and forth in regular hammer drills.

It reduces chatter, improves efficiency, and increases accuracy by isolating motion in the bit.

It’s possible to deactivate the hammer function on an SDS drill, so it behaves like a conventional rotating drill with the flip of a switch. Because of this, it may be utilized with more delicate fabrics.

What is SDS Plus Drill 

In terms of performance, the SDS plus drill is superior to the original SDS drill. Because of its excellent performance, it is suitable for heavy-duty labor. It has a forceful pounding motion and a specific drill bit with four rails that it employed.

SDS Plus DrillĀ 
SDS Plus Drill 

Wide varieties of the “Slotted Drive Shaft (SDS)” have been developed. However, SDS is on its way out, and SDS plus may be found at most pharmacies and drugstores. As a result, the SDS and SDS Plus drills have a few changes.

Carbide drill bits may be used with both SDS and SDS +. Core bits up to four inches long with thin walls of carbide for drilling from 5/32″ through 1-1/8″. A variety of tiny chipped and cutting bits are available.

The three SDS models are distinct in terms of drill bits, modes of operation, and the chucks: SDS plus, SDS max, and SDS.

The shanks of SDS-Plus bits contain four grooves. Two open and two closed grooves make up the four grooves. Locking balls are also affixed to the grooves of the tool. The chuck is well-secured, thanks to those grooves.

It is possible for the bit to go back and forth on its own, though. The tools are not required to install or remove them. It features a 10mm shank and four rails, the SDS plus. This standard drill bit is for hammering with up to 4 kg of force.

As an added benefit, the shank of SDS may be easily clamped into a standard spring-loaded chuck. There is no need to tighten these components because they just push in. In stone and concrete, hammer drilling with masonry drills and SDS drill bits that use this shank is an excellent combination.

What is SDS Max Drill

It’s an expanded version of the SDS plus drill, the SDS max drill. While giant rotary hammers feature an SDS system comparable to SDS drills, it is known as the SDS-Max in bigger models.

SDS Max Drill

SDS max drills have 18mm thick shanks with 05 rails, which is typical for the company’s products. Spline drive pieces measure 19 millimeters in length. Hammering up to 5 kg may be done with this drill bit size. In other words, because of the SDS and drill bit thickness, heavy masonry work is more accessible.

For example, drilling reinforced concrete using SDS plus does not require much effort. SDS drills may also be used to drill through steel, brick, masonry, and concrete materials.

A drill bit with three open holes, such as the SDS max drill bit, is called a driver. There is also a locking portion rather than a ball in the SDS Plus drill.

How to Examine SDS Plus & SDS Max Drills?

This drill bit features a two-cutter tungsten carbide plate, making it highly durable. In addition, SDS + drill bits benefit from long service life and efficient dust removal thanks to the 2-flute U-shape flute design. SDS carbide-tipped drill bits are used in brickwork.

Drilling into concrete was designed to be tough on it.. Because the SDS drill bit has a longer service life than other SDS drill bits,

More complex heads on these carbide-tipped masonry drill bits make them more robust and keep their cutting edges sharper than regular hammer drills.

This is because the tungsten carbide used in SDS drill bits means they can withstand much higher stresses.

SDS Plus vs SDS Max What is the Difference Among Them 

Its shank diameter is 10 millimeters for SDS and SDS Plus shanks, respectively. (The SDS Max has a thickness of 18 mm.)

This shank may be used with a spring-loaded chuck, so bits do not need to be tightened before being inserted into the chuck with the SDS. This shank and the chucks produced for it are particularly well-suited in stone and concrete. Non-circular shank cross-sections match the chuck’s non-circular cross-sections, allowing the drill bit to glide back and forth in the chuck without slipping during rotation. 

Difference Between SDS Plus and SDS Max
Difference Between SDS Plus and SDS Max

SDS shank drill bits are substantially more productive when hammer drilling than drill bits with other shank types since they accelerate the drill bit, not the entire chuck.

Shims open to sliding keyways, which match with chuck keys, to provide rotating motion. The chuck grips the little indentations that don’t open to the end for the sake of security.. To use the drill, a hammer must be attached to the shank. For the shank to glide into the chuck, it must be greased.

A standard SDS can be divided into three sizes: plus, top, and max. SDS-plus is often available for masonry drills with a diameter ranging from diameter to 30 mm . Over half of SDS-drill plus’s bits are between 110 and 1500 millimeters in overall length. Sizes range from 12 inches (13mm) to 1 34 inches (44mm) in diameter for SDS-max, commonly seen on giant rotating hammers and chip guns. 12 to 21 inches are the most common lengths for a guitar string (300 to 530 mm). 

In North America, SDS-Top has been completely discontinued and is only found on obsolete machines. For applications that are too large for SDS-Max, Hilti developed the TE-S system, which resembles these SDS systems but does not allow for tool rotation.

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Can SDS Plus and SDS Max be interchangeable?”

Drilling bits are interchangeable between the two models because both have the same diameter. However, due to the larger size of the SDS max drill, the SDS & SDS plus cannot be used in place of the SDS. However, SDS and SDS plus drill bits may be used in an SDS max rotary hammer with adapters and chucks.

Though it was never intended, SDS Max drill bits are not fully compatible with SDS or SDS plus drills..

Two types of hammer tools are required for SDS plus and SDS max. However, an adapter is commonly utilized by those who employ both types of technology in the same body.

With the adapter, they can all fit inside of each other’s bodies, saving money. In addition, the adapter makes up for the variations between the drills to avoid purchasing a second rotary hammer.


Can you use SDS Plus bits in the SDS Max drill?

SDS Plus and SDS Max are the most common options in the world of concrete drilling and chipping equipment. There are occasions when SDS Plus refers to itself as “SDS” (without the “Plus”); however, it may be used in conjunction with the regular SDS Plus instrument.

Can SDS Plus be used in a standard drill?

SDS bits should not be used in a conventional drill. There is no chuck for them on a regular Rotary or Hammer Drill. Drills can be damaged, and the quality of your job is lowered if you use standard bits that come loose.


SDS drill bits are intended to move independently, unlike ordinary drills. To put it another way, the SDS chuck does not spin or hammer like a standard hammer drill.

Because of this, the drilling action is both more forceful and more accurate.

For the most part, you just need to know about the second sort of SDS bit – the SDS Plus bit. The first is out-of-date, and the last is only employed in the most demanding situations.

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