Durability: Use of the brushless DC motor slows the rate of heat production, which in turn reduces the temperature of the drill housing, even during sustained periods of use. The innovative design of Makita’s brushless motor is engineered to be up to 50% more efficient than a comparative model. A fully charged 18v Li-Ion battery will last longer and charge faster – lasting almost twice as long as it would if used alongside a standard brush motor.

The tool body is separated into the upper and lower housings at the foot of handle portion where the housings are jointed with vibration absorbing cushion rubbers Makita claims their Li-Ion batteries offer unbeatable performance and functionality when compared to Ni-Cad or Ni-MH batteries. The efficient brushless motor on this 18V SDS drill ensures greater productivity for the completion of tough tasks Unique rubber joint construction provides protection to the battery terminals by suppressing vibrationThe tool body is seperated into the upper and lower housings at the foot of handle portion where the houses are jointed with vibration absorbing cushion rubbers High productivity achieved by using efficient Brushless DC motor to reduce energy loss by 30% giving longer run times between battery charges Split tool body into the upper and lower housings, jointed with vibration absorbing cushion rubbers Easy-to-grip handle ergonomically designed to give maximum power thrust and provide a sure and comfortable grip in any operation Easy-to-grip handle ergonomically designed to give maximum power thrust and provide a sure and comfortable grip in any operation; overhead application, drilling with palm-up or palm-down grip

Stiff operating switch – after a few uses the switch should move freely between the three drilling modes however initially it will require slightly more force than you’d expect Producing an impressive 2.0J impact power, 4700bpm, 950rpm no load speed, drilling up to max in concrete 24mm, max in steel 13mmand max drillingin wood 27mm. The power generated from this efficient brushless motor causes the DHR242Z to drill as fast or faster than the 24V cordless combination hammer model into concrete for higher productivity andreduces energy loss by 30%. The tool body is separated into the upper and lower housings at the foot of the handle portion where the housings are jointed with vibration absorbing cushion rubbers The DHR242 comes with an impact rate that is 4700 blows per minute, while the maximum possible speed reaches to 950 rpm. However, with a 2 J individual impact force, the DHR242 does not achieve the impact force of heavier electric hammer drills with a 230-volt mains supply. The manufacturer specifies a maximum drilling capacity of 24 mm in concrete. Drill diameters of 13 mm are possible in steel and 27 mm in wood. Makita BL1850 B batteries with a capacity of 5 Ah are recommended. DHR242: Price UK

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No brushes mean no friction. Without any resistance, the design of a brushless motor allows for a greater level of torque to be produced: the greater the torque, the less power required, which in turn extends the longevity of the Makita DHR242, as the likelihood of day-to-day wear and tear and consequent maintenance is reduced. Powering the Makita DH242Z drill is a Matika DHR242 . Rotary hammer drill. This one looks more difficult to fix. Firstly it's battery powered but I may have a bench supply but not sure how much current it will want to test it. I opened up the drill and with the brushless motor there wasn't much to service - some electronic gubbins.

Brushless motors: longer battery life, shorter charging time and greater power. What’s not to like? Brushless motors key benefits The Makita DHR242 is a lightweight cordless hammer drill for professional purposes that specialises in drilling, hammer drilling and chiselling. Its brushless 18-volt motor not only allows for a more compact design but also increases the service life of the machine by not producing too much heat, thus keeping the device cool and also safe from potential damages that could be caused by friction. It also has a slip clutch that prevents it from jamming under too high a load, which is godsent for stressful work where you would need the machine to operate in an even more stable manner than it normally would. Drill bits and chisels are connected to the hammer drill via an SDS-Plus tool holder. Versatile Usage High productivity achieved by using efficient brushless 3-function DC motor to reduce energy loss by 30%, resulting in increased use-time between charges The tool body is separated into the upper and lower housings at the foot of handle portion where the houses are jointed with vibration absorbing cushion rubbers Efficiency: When Makita’s brushless motor is combined with their 18V Li-Ion battery, use-time is maximised; power is increased and charging time is reduced. Now that’s some seriously efficient energy production!Provides a sure and comfortable grip in any operation; overhead application, drilling with palm-up or palm-down grip