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Yellow and black cordless hammer drill with half-inch metal chuck and 4.0Ah battery attached

DCK KDJZ05-13 20V Brushless Hammer Drill 531 in.lbs 36000 BPM 4.0Ah Battery

SKU CH-6RB9-CSMDS MPN KDJZ05-13

Brushless hammer drill delivers 531 in.lbs torque and 36000 BPM with 22+1+1 clutch settings and 4.0Ah battery

  • Size or dimensions38.0 in × 21.0 in × 11.0 in
  • Main materialBrushless Metal Power Drill
  • Product typeHammer drill
  • Product weight8.77 lb (3.98 kg)
  • Brushless motor delivers 600 W power with 70 % energy efficiency
  • 531 in.lbs torque handles brick, metal and wood drilling tasks
  • 36,000 BPM impact rate speeds up masonry work
  • Two speed ranges 0-550 and 0-2200 RPM plus 22+1+1 clutch for precise control
  • 0 Ah battery drives 800 screws or drills 90 holes per charge

20V Brushless Hammer Drill Kit

The DCK KDJZ05-13 is a cordless hammer drill built around a brushless motor rated at 600W. It targets tradespeople and serious DIY users who need a single tool for drilling masonry, metal and wood as well as driving screws. The kit includes a 4.0Ah lithium-ion battery and a 1/2-inch keyless all-metal chuck.

Thermals noise and power draw

Brushless motor technology reduces friction and sparking, achieving 70% energy efficiency to limit heat build-up during extended use. The motor housing incorporates an air duct to move heat away from the windings. Two speed ranges, 0-550 and 0-2200 RPM, let the operator match power to the material so the tool does not labour unnecessarily.

531 in.lbs torque and 36000 BPM impact

Maximum torque of 531 in.lbs (60N.m) combined with an impact rate of 36,000 BPM determines whether the drill can penetrate hard brick or thick steel in one pass. The 22+1+1 clutch provides fine torque steps for screwdriving without stripping heads. Buyers who need higher torque or a larger chuck capacity should consider a different class of tool.

How it compares

Measured against everything we stock in Power Drills, Drivers & Cutting Bits, at today’s prices. Recalculated every night.

Price $94.99
Pricier than about 54% of the 2,412 comparable items (median $81.99).

Specifications

Product
Brand nameDCK
Model nameKDJZ05-13
Part numberKDJZ05-13 (EA-02)
Product typeHammer drill
Size & build
Size or dimensions38.0 in × 21.0 in × 11.0 in
Main materialBrushless Metal Power Drill
Product weight8.77 lb (3.98 kg)

Questions about this item

How do I install a bit into the 1/2 inch keyless chuck without damaging the mechanism?

Set the direction switch to the centre position and remove the 4.0Ah battery. Hold the chuck body, rotate the sleeve counter-clockwise to open the jaws, insert the bit, then rotate the sleeve clockwise until tight.

What routine upkeep does the brushless motor and 4.0Ah lithium-ion pack need to keep delivering 531 in.lbs of torque?

Blow dust from the air ducts after each job, wipe the battery contacts clean, store the pack at room temperature and recharge it every few months if unused.

At what point does the 600W brushless motor hit its thermal limit during continuous hammer drilling at 36000 BPM?

Extended high-load work in hammer mode at 2200 RPM will cause the motor housing to heat up first; let the tool cool when it becomes uncomfortably warm to hold.

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