The Yato YT-827724 is an 18V cordless rotary hammer drill with a brushless motor, offering 2.8 J of impact energy. Equipped with an SDS+ chuck, the tool is suitable for drilling in concrete and chiselling.

The Yato SDS+ Cordless Rotary Hammer Drill Kit operates on 18 V DC power and delivers 2.8 J of impact energy. The tool is powered by a brushless motor that rotates the SDS+ chuck at a speed of 0–950 min⁻¹ and produces an impact rate of 0–4700 min⁻¹. The assembly utilizes electronic speed control, which optimizes torque and impact force when drilling into hard materials.

The device's SDS-Plus chuck allows for quick mechanical attachment of bits and efficient transfer of impact energy without additional tools. The brushless motor design minimizes rotor friction and thermal load, extending battery life and the mechanical lifespan of the device compared to traditional brushed motors. The rotary hammer body alone weighs 2.8 kg.

The system offers three mechanical operating modes: drilling, hammer drilling, and chiselling. This enables drilling holes up to 26 mm in concrete with twist drills and coring holes up to 68 mm in silicate or ceramic bricks with core bits. The maximum capacity for steel is 13 mm and for wood is 30 mm.

The cordless rotary hammer drill kit comes with two 4.0 Ah Li-Ion batteries and a two-hour fast charger. The tool has an integrated battery charge indicator for real-time electronic power monitoring. The device has an insulation class of III and an ingress protection rating of IPX0, and it achieves a maximum sound power of 105.5 ± 3.0 dB(A) under maximum load.

Intended Use and Suitability:

The cordless rotary hammer drill is designed for series installations and heavy-duty penetration work requiring efficiency in the construction industry. The device's brushless motor and impact mechanism are calibrated for extensive drilling and chiselling tasks.

• Penetration of Concrete and Masonry: With 2.8 J of impact energy and an impact rate of 0-4700 min⁻¹, it enables drilling anchor holes and installation breakthroughs up to 26 mm in diameter in concrete.
• Demolition of Structural Components: The chiselling mode and SDS+ chisel bits support the mechanical removal of hard stone materials, tiles, and grout without rotational movement.
• Mobile Installation Work: The system with two 4.0 Ah (72 Wh) batteries provides continuous power supply in locations without a fixed power grid.

Package Contents:

The product package with code YT-827724 is supplied as a ready-to-use installation assembly.

• Yato YT-827724 cordless rotary hammer drill body
• Two (2) 18V 4.0 Ah Li-Ion batteries
• Fast charger (2-hour charging time)
• Auxiliary handle
• Depth stop

Features:

The functionality of the device is based on efficient electronic control and impact mechanics.

• Brushless Motor Technology: Reduces mechanical friction and heat loss, minimizing energy dissipation and lowering thermal load under heavy use.
• Three Operating Modes: A mechanical selector allows choosing between drilling, hammer drilling, and chiselling according to material density and work phase.
• SDS-Plus Quick Chuck: Ensures backlash-free attachment of drill bits and chisels and optimal impact energy transmission without special tools.
• Adjustable Rotational Speed: Electronically controlled speed from 0-950 min⁻¹ allows for precise starting in different materials directly by trigger pressure.

Technical Specifications:

• Operating Voltage: 18 V d.c.
• Impact Energy: 2.8 J
• Rotational Speed: 0–950 min⁻¹
• Impact Rate: 0–4700 min⁻¹
• Chuck Type: SDS-Plus
• Motor Type: Brushless (BL)
• Maximum Drilling Depth (concrete): 26 mm (twist drill), 68 mm (core bit for silicate)
• Maximum Drilling Depth (steel / wood): 13 mm / 30 mm
• Body Weight: 2.8 kg
• Full Package Weight: 6.667 kg
• Batteries: 2 pcs 18V 4000 mAh Li-Ion (72 Wh)
• Charging Time: 2 h
• Sound Pressure Level (LpA): 97.6 ± 3.0 dB(A)
• Sound Power Level (LwA): 105.5 ± 3.0 dB(A)
• Vibration Level: 18.23 ± 1.5 / 15.55 ± 1.5 m/s²
• Insulation Class / Enclosure Rating: Class III / IPX0

Yato YT-827724 User Manual:

Mechanical procedures for installation and operation in industrial settings.

• 1. Power Source Connection: Using the included charger, ensure that the 18V battery is fully charged. Slide the battery into the sliding rail at the bottom of the handle until the mechanical lock clicks into place.
• 2. Bit Installation: Pull back the locking collar of the SDS-Plus chuck, insert a clean and lightly lubricated bit into the chuck, and release the collar to secure the lock.
• 3. Selecting Operating Mode: Turn the mechanical selector switch on the side of the device to the drilling, hammer drilling, or chiselling symbol according to the desired work phase.
• 4. Adjusting the Depth Stop: Unlock the mechanical lock of the auxiliary handle, set the metal depth stop to the desired measurement to ensure drilling depth, and tighten the handle back into place.
• 5. Drilling Process: Position the device perpendicular to the surface. Press the trigger to adjust the rotational speed within the range of 0–950 min⁻¹. Avoid excessive physical pressure to support the optimal operation of the pneumatic impact mechanism.

Warnings:

Critical technical warnings to ensure electrical and occupational safety.

• Noise Exposure: The tool produces a sound power of 105.5 dB(A) under maximum load. The use of standard hearing protection is mandatory to prevent permanent hearing damage.
• Vibration Exposure: The device's vibration level of 18.23 m/s² requires continuous monitoring of exposure time during prolonged demolition work to prevent circulatory disorders.
• Electrical and Moisture Safety: The IPX0 enclosure rating does not provide protection against water ingress. Exposure of the device to moisture poses a risk of short circuits in electrical components.
• Mechanical Kickback: Sudden jamming of the drill bit, for example, in concrete reinforcement, can cause the device to rotate violently and uncontrollably. Using the auxiliary handle with both hands during operation is essential.

Frequently Asked Questions, FAQ:

• Are SDS+ bits from other manufacturers compatible with the Yato YT-827724 model? Yes, the device's SDS-Plus quick chuck is standardized and supports all industry-standard SDS+ drill bits and chisels regardless of the manufacturer.
• Can the device drill without the impact function? Yes, the pneumatic impact mechanism can be completely disengaged with the mechanical selector switch, allowing the device to operate with rotational movement only, for example, when drilling wood or steel.
• How long does it take to charge a 4.0Ah battery from empty to full? The fast charger supplied with the device fully recharges a 4.0Ah (72 Wh) lithium-ion battery in exactly two hours.
• What are the device's maximum capacities for different materials? The device can drill 26 mm holes in concrete with a twist drill, 68 mm holes in brick with a core bit, 13 mm holes in steel, and 30 mm holes in wood.

Recycling Instructions:

Material-specific recycling instructions according to professional use regulations.

• Rotary Hammer Body and Charger: Electrical equipment containing electronic components, copper, and a motor must be delivered to an official waste electrical and electronic equipment (WEEE) collection point at the end of its life cycle. The device must not be disposed of as mixed waste.
• Li-Ion Battery: 18V lithium-ion batteries contain reactive and flammable materials. Tape the battery contacts to prevent short circuits and return the battery to an approved battery collection point.
• Packaging Materials and Accessories: The cardboard packaging of the device should be recycled in cardboard collection, and worn metal bits in metal recycling for reuse.