Amied at: Professionals in all trades who need a drill with really serious levels of torque for BIG drilling.
Pros: Excellent ergonomics and loads of torque and a 6Ah battery too, for longer working times.
This torquey Combi drill from Hitachi is a brand new, “from the ground up” development, although it would be hard to tell that from just its external appearance. The two key developments on it are the use of a “biggest ever” 6Ah lithium ion battery pack, which is actually the same size and weight as the 5.0ah pack, and a competition-busting 136Nm of “torques”, as Jeremy Clarkson would say.
I have already had a comment from a tradesperson who sniffily told me that trades didn’t need that amount of torque, but I disagree. I seem to have had a few situations recently where I could have done with quite a lot more torque from my drill! For example, using a 75mm hole saw through a bit of 20mm thick hardwood. You may not need the torque often, but when you do, its nice to know its there. Also, with all that torque on tap, the drill seems to work more quietly and responsively – but maybe I am getting ahead of myself.
A quick run down of the Hitachi DV18DBXL proves that the innovations are largely internal – its functions and controls follow a very familiar pattern. The speed sensitive trigger is large enough for a gloved finger and the forward/reverse function is via the push through switch above it.
Behind the quality metal- bodied 13mm chuck, the large collar for changing torque settings is large and easy to grasp and therefore easier to adjust. It has 22 torque settings as well as drill and hammer modes. A slider switch on top of the ABS body casing selects slow or fast motor speeds.
But I think that what users will notice is the very ergonomic handle that the drill boasts. I think it is genuinely comfortable to hold and provides very good grip, especially at higher torques. My feeling was that the designers have made the grip a bit smaller and slightly more hand-shaped to give the level of comfort needed.
Below the handle there are several important features. Not least of these is the 6Ah battery pack, which has a flat base so the drill can be stood on it.
The rails for sliding the battery packs are robust and the battery slides easily on them. The spring-loaded buttons for releasing the battery pack operate positively as well.
On the base of the handle is a bright LED light aimed at the chuck. This switches on and off automatically, and is definitely not a gimmick or “me too” as anyone working in the semi dark or in enclosed spaces will tell you.
Just behind the light is a battery charge indicator so that users can know when to charge up.
There is the customary reversible belt hook too, probably only usable if you have a proper weight-bearing belt round your waist.
The small RFC logo on both sides of the motor housing stands for Reactive Force Control – a posh name for a sophisticated safety clutch. Basically, should the drill bit or whatever, become stuck in the material, the RFC electronics will cut in and stop the motor before the operator breaks a wrist or fingers (with 136Nm of torque on tap it is best to be wary)
The electronics will also cut in to protect the combi from heat build up, battery overloading and deep discharge, as well as maximizing the torque usage, speeds etc of the new brushless motor.
What was a big surprise for me was that this Hitachi combi comes with a 37cm long auxiliary handle. This handle screws into either left or right hand side of the alloy gearbox housing on the front of the tool. The “hand” end has an ergonomic handle with big flanges to prevent hands from coming off it.
I confess that I thought that the length of the auxiliary handle was a bit over the top when I saw it, but when I started testing the torque available from the combi, I realized that there would be times when I would need it.
Unfortunately, because of the demand for sample tools to test, I had a relatively brief window in which to try it out, but I did my best. In the past I have found that some drills I regularly use are unable to drill holes in hardwood when using the three-fluted spiral “speed” drills on the market. In fact, I have often managed to stall a drill bit into the material just past the pilot screw. No such trouble with the Hitachi DV18DBXL – it eats such stuff for breakfast. I drilled 25mm diameter hole after 25mm diameter hole, through 30mm thick, dry and hard oak with the drill not even breaking into a metaphoric sweat. It really has so many guts that you will like having the long auxiliary handle to help control the torque effect.
While it might not look like it because it retains the current Hitachi look and livery, the DV18DXBL is in fact a deliberate move into a new era of drilling by Hitachi. Using a new and powerful brushless motor and a 6Ah battery pack, there is a focus on compact power that uses the latest electronics to deliver maximum performance for the end user while reducing energy sapping heat from both the motor and battery packs.
The pairing of the 6Ah battery packs and brushless motors maximizes power and run times without the expected extra weight – the new battery packs weigh the same as the “old” ones. Hitachi also assures us that there will be full compatibility with every “slide battery” from 1.5 to 6Ah, and that chargers will be similarly compatible. Charge times will of course vary from old to new, with the new battery packs expected to charge in about 35 minutes.
But even better is that Hitachi intends pricing for the new drill to be VERY competitive. We users will not know the exact pricing details until the launch of the drill in February – but I am sure it will be a pleasant surprise.
For more information on Hitachi Power Tools, please visit www.hitachi-powertools.co.uk