10 Best Hammer Drill For Heavy Jobs 2021 Reviews

Best Hammer Drill. Hammer drills are power tools that work like standard drills. They have a hammering function that drives the drill bit into the soft or rigid material while the drill bit rotates.

This impact helps the drill bit get through like block, concrete, wood, plastic, brick, and block. They can be used by DIYers or professionals.


What are hammer drills?

A hammer drill is made for drilling holes into concrete, brick, rock, and masonry. It is a tool that can provide more and much better power in the form of a hammering motion or hammering action.

The powerful force of the device is applied to the bit. Its hammering motion can be turned off, so the tool can function more like a regular standard drill.

The tool can perform with astonishing speed and easy to use. It combines hammering action or concussive blows with bit rotation.

Once the drill rotates the bit, it will pulverize brick or concrete. If you use a regular standard drill, you can drill a hole three to four times slower than using a hammer drill.

You can compare this tool with a mini-jackhammer. A rotating drill bit can force a hammer pounds to blast holes into the most abrasive and most rigid masonry materials.

To accomplish the work, you should use carbide-tipped masonry bits. Find the best tool if you want the best performance.


The advantage of using a hammer drill

1. For masonry screws

Professional plumbers and electricians own hammer drills to use the tool all the time to drill pilot holes for masonry screws. These masonry screws are also known as Tapcon.

2. No anchor needed

They do not need an anchor but require thread right into the hole. The result of drilling the pilot holes must be accurate. The best way to bore these holes is to use a hammer drill. Besides that, the masonry screws must be held securely using the masonry drill bit.

3. Powerful tool

It is so powerful that its speed and power can blast through the hard concrete and gravel it encounters.

4. Split stones and boulders

There is an easy way to split large stones and boulders by using iron wedges and feathers. The process begins with drilling a series of holes into the boulder with this device. After that, insert into every hole one wedge and two iron feathers. Get a small sledgehammer to tap each wedge deeper into the holes. It will stop when the boulder cracks into two parts.

5. Reliable

The tool is reliable enough to drill into mortar joints or brick. Mortar joints are easier and softer to drill. Anchors and screws can be used to bite securely into a brick. When it is switched off, it can drill holes and drive screws into materials.


Main components of hammer drills

1. Power source

Most hammer drills are corded hammer drills (AC) or cordless hammer drills (DC). You can work as much time as you can without the need for a recharge. Simultaneously, cordless models will have to recharge, but it gives you maneuverability.

2. Drill bit

a. The shank

The shank is the part or portion that fits into the hammer drill collar. This part holds the collar securely as the power tool delivers the impact and rotation during operation.

Standard shank designs include spline shanks, SDS-MAX, or SDS that lock securely into the chuck. The lock mechanism will not dislodge the drill bit.

b. The tip

Carbide is blended into the drill bit head to strengthen and harden for breaking up the rigid concrete. Carbide tip can be damaged in extreme heat, melting or dulling it away entirely. This extreme temperature can lower the strength of the tip to break the concrete.

c. The land

The land is the raised part of the spiral part of the hammer drill bit. This part holds the cutting edges of the drill bit on the outside diameter.

d. The flute

The flute runs parallel to the land to eliminate dust from the hole as the hole is being drilled. This portion can prevent jamming.

e. The head

The head holds the tip and is located at the lead point of the drill bit. It gives maximum collision in breaking up the rigid concrete. Depending on the number of flutes, the head will have two or four flat angles for the lead cutting action.

3. Drill chuck

Drill chucks are parts that hold a drill or a cutting tool on a spindle. For fast replacement of a drill bit, drill chucks are available in hybrid, keyless, or key systems.

Keyed Drill chucks are designed to tighten or loosen the hold on a hammer drill by using a key.

4. Trigger

The movement of your finger can activate a trigger. It is a switch that starts and activates the electric motor of the power tool. When the motor runs, it drives a rotating drill chuck.

A wide variety of accessories can fit into the drill chuck. You can drill holes, drive screws, polish, sand, and grind materials.

5. Drill shaft

The motor of a hammer drill is located in the drill shaft. This region of the tool separates the trigger and the chuck.

6. Reverse switch

You can choose the bit to spin reverse or forward by pushing a switch near the trigger. If you are going to drill into a workpiece, you use the forward feature.

On the other hand, if you are going to extract materials, you use the reverse switch. The reverse switch works following screws.

7. Gear selection switch

If you own a hammer drill that can switch gears, there is a switch on the top. The torque and speed on the tool are inverse. You will have less torque when you are at high speed. You will have more torque and when you are at low speed.

Some models may have three or four gears. Some other models might have electronic controls above the battery.

8. Handle grip

Today’s hammer drill has an ergonomically designed handle grip to make the drilling job less fatigue and as comfortable as possible. You hold the power for minutes, and the handle grip can ease the fatigue.


Types of hammer drill

1. Cordless

If you do not have access to a power outlet, a cordless hammer drill is the best option for a drilling job. The tool is portable, and the latest 18+ volt models can match a corded hammer drill’s power.

2. Corded

Corded hammer drills can only operate if there is a power outlet nearby. You can drill through rigid and tough material because of the consistent and high amount of power the hammer drill can produce.

Your drilling job can finish a lot faster if the tool has more power. To make the job more flexible, you need to provide a good-quality extension cord.

3. Dedicated

A dedicated hammer drill or also known as a rotary hammer is a tool for finishing many masonry drilling to do. Since the price is high, you need to rent the device.

   Corded Cordless
Working Hours Long According to the battery
Electrical source Needed Not needed
Storage Difficult Easy
Mobility Limited Unlimited
Lifespan Long Short
Weight Lightweight Heavy

Factors to consider when purchasing a hammer drill


FAQ hammer drills

Why is the workpiece cracking?

One significant trouble hammer drill users have when drilling through hard surfaces is these materials will shatter or crack. The cause of cracking is when there is too much force applied against the material.

To avoid cracking materials, all you have to do is to increase the amounts of pressure gradually. Stop increasing the pressure when the drill reaches a maximum amount of power.

Why is the drill bit stop working?

You may face another big trouble when drilling through tile or concrete when the drill bit stops drilling into the hard material. This trouble may be caused by the bit’s flutes not carrying enough material out of the hole. The other cause of a jammed or bound drill bit is when the bit contacts a piece of rock.

The material buildup problem can be fixed by moving the bit down and up in the hole every thirty seconds while drilling. Or keep a small length of tubing by blowing the dust out of the hole.

Bit jamming happens when your drill bit contacts a piece of rock, and it can not break. Insert a concrete nail in the hole and strike the nail with a hammer until it breaks the rock. Use more force with the hammer if the rock will not break.

Why the drill perform poorly?

You might set the variable speed wrong. The hammer drill usually has two modes: a drill and hammer mode.

You have to make sure that you are using the right mode for suitable material. The hammer setting is for drilling rigid materials like concrete blocks, brick, and mortar. The tool will not perform if the mode is not set to either drill or hammer mode.

Why do the drill bits keep falling out of the chuck during drilling?

  • The chuck is not tightened. The chuck must be tightened. Use the chuck key to tighten the chuck to make sure that the hammer drill bit stays in place.
  • Cylindrical drill bits. Drill bits have cylindrical or hexagonal areas for the chuck to grab onto. Cylindrical drill bits do not offer as much grip to the chuck as the hexagonal drill bits. It is highly recommended to use hexagonal drill bits to reduce slippage and give a better grip to the chuck.
  • Worn out. Replace worn-out drill bits to receive the best traction.

Why the trigger jam?

A switch is located above the trigger that lets the user put the drill in reverse or forward. You have to make sure that the switch is in reverse or forward. If it is in the center position, the trigger of the drill will not function.

If the trigger is stuck, clean the trigger using a damp cloth. First, open up the drill casing. Clean out debris or dust that may have accumulated within the trigger.


Top 10 hammer drill comparison chart

Model  Power Source Best For Rating
1. DEWALT 20V MAX XR – DCD996P2 Cordless Best Cordless Hammer Drill 4.7
2. Milwaukee Hammer Drill 2704-20 M18 Cordless Best Heavy Duty Hammer Drill 4.6
3. Bosch SDS Hammer Drill 11255VSR Corded Best Hammer Drill For Concrete 4.8
4. HILTI Hammer Drill 3536723 SF 2H-A Cordless Best Hammer Drill For Removing Tile 5.0
5. RYOBI Hammer Drill P214KSB ONE+ 18V Cordless Best Budget Hammer Drill 4.8
6. Makita Hammer Drill XPH07Z 18V LXT Cordless Best Brushless Motor Hammer Drill 4.7
7. Bosch SDS Hammer Drill 1-1/8-Inch Rotary Hammer Corded Best Rotary Hammer Drill 4.7
8. Monkey King Bar-Sds Max SDS Hammer Drill Corded Best Cheap Hammer Drill 3.7
9. Milwaukee SDS Hammer Drill 2715-20 M18 Cordless Best Hammer Drill For Brick 4.7
10. Milwaukee SDS Hammer Drill 2416-22xc M12 Cordless Best Hammer Drill For Masonry 4.7

5 best hammer drill reviews

1. Best Cordless Hammer Drill – DeWalt Hammer Drill 20V MAX XR Battery-powered Hammer Drill, Brushless, 3-Speed DCD996P2

Dewalt Hammer Drill
Buy At Amazon
  • Best Cordless Hammer Drill. The DEWALT Hammer drill DCD996P2 is considered one of the best tools for drilling on the market and the best cordless hammer drill. You can choose it as your premium choice. The cordless hammer drill device is crafted for the needs of masonry and construction work.
  • Easy Operation. You can complete any task on time provided by the 20-minute shutoff function. The device product by DEWALT is equipped with battery packs to come with a fuel gauge to give you information on how much run time the batteries have left.
  • For Light Work. Every user can use it to make holes for nails and screws. The best feature is its capability to offer light for construction workers in dark areas.
  • Fast Drilling. This tool can provide 0 to 38, 250 BPM for fast drilling in construction or masonry materials.
  • DeWalt-built high-efficiency brushless motor
  • 0 to 500 or 0 to 1,500 or 0 to 2,250 RPM in hammer drill mode
  • 0 to 450 or 0 to 1,300 or 0 to 2,000 RPM in drill mode
  • 3-speed transmissions
  • 0 to 38, 250 BPM
  • LED Spotlight Mode
  • 3-Mode LED
  • Heavy-duty 1/2-inch ratcheting nitro-carburized metal chuck with carbide inserts
  • XR® Li-Ion batteries with fuel gauge
Model  Power Source
Speed 0-38, 250 BPM
LED 3-Mode LED lighting with LED spotlight mode
Length 8.4-inches
Weight 4.7 pounds
Transmission 3-speed
RPM 2,250
Dimension 11-inches x 4-inches x 17-inches
Power Source Lithium Ion Battery
Warranty 90-Day Money back guarantee
3-year free service agreement
2-year limited warranty.
What’s Included DCD996 – 20V MAX* XR Lithium Ion Brushless Premium 3-Speed Hammer drill;
DCB205 – 20V MAX* XR High Capacity Li-Ion Batteries (5.0Ah);
Charger
Belt Hook
360° side handle
Kitbox

2. Best Heavy Duty Hammer Drill – Milwaukee Hammer Drill 2704-20 M18 FUEL 1/2″ Cordless, Battery-powered

Milwaukee Hammer Drill
Buy At Amazon
Buy At Home Depot
  • Best Heavy Duty Hammer Drill. The Milwaukee Hammer Drill 2704-20 ½-Inch is a cordless hammer drill with great design, superior battery technology, and an investment well worth your while. Its brushless motor technology provides a much more efficient tool.
  • Speed. Its length a 7.75-inches and weighs 3.5 pounds. This device has a maximum of 32,000 BPM and up to 1,200-inch/pounds of torque.
  • Motor. Brushless motors are a longer tool lifespan and less maintenance without sacrificing power. This product offers RedLink Plus Intelligence for protecting the tool and effectively prevents the device from overloading and overheating. It has two variable speed settings of 0 to 550 and 0 to 2,000 RPM to provide productivity in most workplaces.
  • Keyless Chuck
  • High-carbon steel material
  • M18 battery
  • Chuck type 1/2-inch metal single sleeve
  • BPM 32,000
  • Peak torque: 1,200-inch/pounds
  • Full 9-inches Grinding Capacity
  • Variable Speed
  • LED Light
Model  Power Source
Speed 32,000 BPM
LED LED on foot of tool
Length 6.9-inches
Weight 3.2 pounds
Motor Type Brushless
RPM 2,000
Dimension 3.61-inches x 9.75-inches x 7.66-inches
Power Source M18 Battery, 18 volts, Lithium-ion
Warranty 5-year warranty
What’s Included Tool only

3. Best For Concrete Hammer Drill – Bosch SDS Hammer Drill 11255VSR Bulldog Xtreme Corded

Bosch Hammer Drill
Hammer Drill
Buy At Home Depot
  • Best For Concrete Hammer Drill. This Bosch SDS Hammer Drill 11255VSR has a build quality and comfortable handle with a D-grip design for greater control. The grip has a standard adjustable side-handle that you may rotate around the tool.
  • High Performance Hammer Drill. Other features of the corded drill including the SDS-plus bit system, the integral clutch, and the Vario-lock positioning. This product is equipped with a 7.5 AMP motor that can deliver 1,300 RPM and 5,800 BPM for maximum performance and power of handling big pieces of thick rigid materials.
  • Precision. This product has a speed that allows more accurate and precise drilling. Its trigger supports a two-finger pull, with a special selector button for switching between the modes.
  • Motor. The motor has an impact energy of 2.2 feet per pound for highly efficient drilling and chiseling. It is a rotary hammer drill with a large trigger and can be covered by two fingers. There is a depth stop for limiting the maximum drilling depth. Its SDS-plus bit system will let you do quick bit replacement and automatic bit locking. The Vario-lock feature allows a change of the chisel’s orientation. An integral clutch is for minimizing the torque reaction and protects the gears from damage.
  • 8.0 Amp rotary hammer
  • SDS-plus® bit system
  • D-handle design
  • HammerHook
  • Rotating brush plate
  • Three modes of operation: rotary hammer, rotation, and hammer
  • Integral clutch
  • Variable-speed trigger with reversing
  • Vario-lock positioning
  • Rotating chisel lock
  • Three modes of operation
  • 2.0 feet/pounds
Model  Power Source
Speed 5,800 BPM
Chuck Size 3/4 in SDS-plus
Length 17.25-inches
Weight 6.7 pounds
Motor 8.0 amp
RPM 0-1,300
Dimension 22.5-inches x 11.25-inches x 4.75-inches
Corded/cordless Corded
Warranty 1-year warranty
What’s Included 1-inch Rotary Hammer
Auxiliary Handle
Depth Gauge
Carrying Case

4. Best For Tile Hammer Drill – HILTI Hammer Drill 3536723 Hilti SF 2H-A Cordless

Hilti Hammer Drill
Hammer Drill
  • Best For Tile Hammer Drill. This HILTI Hammer Drill 3536723 SF 2H-A is a 12V sub-compact class cordless hammer drill powered by a Li-ion battery. The chuck is a 10-mm keyless for light-duty applications. Its chuck clamping range is 1/32-inch to – 13/32-inch. Perfect drill for tile.
  • The Motor. This product’s motor is protected with temperature, voltage, and current sensors. The Hilti product has a no-load RPM of gear 1: 400 RPM, and 2nd gear: 1500 RPM.
  • Compact Design. The design is compact so that you can handle work in tight corners. Its handle grip is ergonomic and balances for optimum drilling comfort.
  • High-productivity. The device can offer a maximum torque of 106 in-lb soft joints and 212 in-lb hard joints. You can have a high productivity drilling job with a drilling speed of up to 1,500 per minute.
  • maximum torque 106 in-lb / soft joint, 212 in-lb / hard joint
  • rated voltage: 10.8 V
  • rated voltage: 10.8 V
  • weight: 2.2 pound
  • Dimensions (LxWxH): 7.7 x 2.8 x 8.1-inch
  • torque increments: 15
  • Chuck clamping range: 1/32-inch – 13/32-inch
  • no-load RPM gear 1: 400 RPM; 2nd gear: 1,500 RPM
Model  Power Source
Speed 27,000 BPM
Chuck Size 3/8-inch
Weight 2.6 pounds
Motor 12 volts, 4 Ah
RPM 0-1,600
Dimension 16-inches x 10-inches x 7-inches
Corded/cordless Cordless
Warranty 2 Years No Costs Wear & Tear Coverage
20 Year Limited Warranty
What’s Included B 12/4.0 Li-Ion Battery pack
C4/12-50 charger
belt clip
bag
SF 2H-A tool
belt hook

5. Best Budget Hammer Drill – RYOBI Hammer Drill P214KSB ONE+ 18V Cordless 1/2-inch Cordless/Driver Kit

Ryobi Hammer Drill
Hammer Drill
  • Best Budget Hammer Drill. Two 1.5 amp hour-compact batteries power the RYOBI P214KSB. The 30-minute charger can provide you going all day with driving or drilling tasks. If you have an aggressive drilling task, it will drain the battery quickly.
  • The Motor. The motor runs at 2-speed with 600-inch pounds of torque in low-speed running at 375 RPM. If you choose low-stress applications, they can perform quickly at 1,600 RPM. When you need an exact amount of torque, twenty-four clutch positions can help dial in for driving applications to avoid damage to your work. You can do light concrete or masonry drilling with the clutch-overriding drill and hammer drill modes.
  • LED Light. To help light a darker area during the drilling, there is a standard bottom-mounted LED light.
  • 18 Volt battery
  • ½-inch heavy-duty chuck
  • RPM: 0 – 375 / 0 – 1,600
  • BPM: 0 – 5,600 / 0 – 24,000
  • 24 clutch position
  • weight: 3.9 pound
  • 1/2 inch all-metal
  • easy bit changes
  • clutch override
  • drill mode for drilling holes
  • drive mode For driving bolts and screws
  • hammer mode for drilling holes in concrete and masonry
  • MAGTRAY™ magnetic holder (bits and screws)
  • 2-speed gearbox
  • built-in bubble level
  • GRIP ZONE ™ over-mold for maximum and comfortable grip
Model  Power Source
Speed 24,000 BPM
Chuck Size 1/2-inch
Weight 3.2 pounds
Motor 18 volts
RPM 0-1,600
Dimension 11.1-inches x 10.08-inches x 7.17-inches
Corded/cordless Cordless
Warranty 3 Year Manufacturer’s Warranty
What’s Included Tool only

Common problems with a hammer drill

1. The drill bits jam

When a drill bit comes into contact with a hard material it may unable to cut. The drill bit may bind up in the hole. There is no chance of removing it. To solve this problem, unplug the hammer and uninstall the drill bit from the hammer drill. Using a Stillson wrench, remove it from the hole by turning it counter-clockwise. The blockage should be cleared with a concrete nail.

2. Chips of the material being drilled break

When this occurs, it can be dangerous because these are sharp pieces and can cause injury. To minimize this (also called spawling), you have to reduce the amount of pressure on the drill. Some models provides a rubber cup that fits over the end of the chuck. The cup will minimize the amount of materials that are fly away or break off. You can also call this rubber cup as spawl shield.

3. The drill bits stop drilling

The drill bits may stop drilling through concrete or tile which is caused by the flutes of the bit are not carrying enough material out of the hole. The other cause is that the bit comes into contact with a piece of rock.

You can solve the material build-up by slowly moving the bit up and down in the hole every thirty seconds during drilling. Keep a small length of tubing or straw to blow the dust out of the hole.

Almost all of the time, when the drill bit contacts a small rock it can not break. Insert a concrete nail or pointed rock punch in the hole and strike it sharply with a hammer until breaking the rock.

4. The workpiece cracks

When drilling through brittle or hard surfaces the material being drilled will shatter or crack. The reason for this is when using too much force when drilling the material. To prevent the crack, use gradually adding amounts of pressure. Stop adding the pressure when the amount of material being pushed out of the hole reaches a maximum amount.


The safe work procedures

1. Inspection

Inspect plug and lead for crack or damage. You need to make sure that the connection is clean and that the hose connects securely to the spigot. Make sure the T-handle is attached when using drill bits.

2. Pre-start checks

Check casing for crack or damage, and missing screws. Inspect chuck segments for distortion, nicks, wear, and ensure the chuck is secure. Inspect the drill bit and make sure that each segments are not worn or chipped. The drill stem is undamaged and clean. Use the right chuck key to tighten the chuck. Make sure the chuck is tight.

2. During operation of hammer drill

Adopt comfortable and good posture when using hammer drills. Do not bend. make sure to utilize load or leg support when using a large drill to drill into walls. Avoid having leads or hoses in the area. Always wear protective equipment when drilling concrete, brick, or stone. Ear protection should be used when drilling hard materials including concrete, stone, or brick when using larger drills. Check for pipes, conduits, or cables behind or in the walls before drilling.


Hammer drill maintenance

  • Remove and inspect the motor brushes on a regular basis
  • Refit the motor bushes exactly as they are removed.
  • Inspect gearbox regularly and top up with a good quality high melting point gearbox grease.
  • Never turn them or swop their positions.
  • Never to overfill the gearbox, just apply enough grease to cover all visible moving parts only.
  • Replace motor brushes in pairs.
  • Worn and dirty motor brushes may result in loss of power or excessive sparking.
  • Make sure the tool is isolated from the electrical supply. Switch off and remove the plug from the socket, before starting any maintenance activities or adjustments.
  • Never use any chemicals or harsh abrasives to clean the tool.
  • Clean the tool regularly, using a soft cloth or soft brush.

10 Best Hammer Drill For Heavy Jobs 2021 Reviews
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