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Mine Exploration Forum

Author SDS Drill capacity comparison
gNick

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SDS Drill capacity comparison
Posted: 02/11/2014 17:22:02
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This is a bit like trying to compare fuel economies of cars over different terrain but what do people get in terms of holes per charge from their drills?

The Spit 327 24v that I repaired can manage about 4 x 100mm deep 14mm Dia holes in limestone from a 24V 3Ah NiMH battery

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J25GTi

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SDS Drill capacity comparison
Posted: 02/11/2014 17:27:35
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gNick wrote:

This is a bit like trying to compare fuel economies of cars over different terrain but what do people get in terms of holes per charge from their drills?

The Spit 327 24v that I repaired can manage about 4 x 100mm deep 14mm Dia holes in limestone from a 24V 3Ah NiMH battery


Interesting thoughts. I feel the results are not going to be much use though, as us lot down in cornwall drill into a lot of granite etc, sometimes you are lucky to get two holes to a battery!

Where as nice soft slate you should get quite a few!

My ryobi will do 4-6 in Killas and 3-4 in granite

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sinker

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SDS Drill capacity comparison
Posted: 02/11/2014 18:07:04
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36v Hilti TE6A with LiOn batteries will drill 12mm all day in granite or limestone on a single battery, say 30-40 holes is not a problem. 20mm auger bit in reinforced concrete, say 20 holes from a battery, if you don't hit steel.
36v Bosch GBH, again with LiOn batteries (albeit older batteries) 20-30 holes from one battery?

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royfellows

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SDS Drill capacity comparison
Posted: 02/11/2014 20:54:06
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I bought a SH Dewalt 24V DC224 off eBay for £100 a few years ago. Drill last OK but later batteries down to about 4 holes drilling for 10mm through bolts in rock.

Shopped for new battery on ebay again found one with larger capacity than manufacturers original and Sanyo batteries in it. (Sanyo is a buzz word to me) for £60

Drill about 8 to 10 holes, no need carry spare!

Not as good as Sinkers kit but fair for what I paid for it and the drill is lasting well.

Rock can vary, slate and mudstone gets eaten, probably do a lot more holes, but vein rock can be quite hard and you start to wonder whats happening.

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Mr.C

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SDS Drill capacity comparison
Posted: 02/11/2014 21:22:25
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gNick wrote:

This is a bit like trying to compare fuel economies of cars over different terrain but what do people get in terms of holes per charge from their drills?

The Spit 327 24v that I repaired can manage about 4 x 100mm deep 14mm Dia holes in limestone from a 24V 3Ah NiMH battery

That's roughly the same as I was getting with a Bosch GBH24V with a 3Ah battery. I was able to drill a 16mm dia x 300mm hole in cherty limestone on one battery when the drill was new. However the hammer action became rapidly worn out. Much sooner than the battery - mind you, it was never intended for this type of abuse!

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IP: 95.145.86.44 Edited: 03/11/2014 10:40:42 by Mr.C
JonK

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SDS Drill capacity comparison
Posted: 02/11/2014 21:28:08
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Bosch DW 005 24v NiCad drills about 12 - 13 10mm diameter holes in slate and takes all manner of abuse. Even worked after total immersion when seal on Peli case failed. IP: 86.151.10.218
gNick

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SDS Drill capacity comparison
Posted: 03/11/2014 10:21:10
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This has got me looking at Hilti TE-6As on ebay, the problem being the significant risk that replacing batteries and charger may be necessary after which you find that the drill itself is worn out...


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sinker

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SDS Drill capacity comparison
Posted: 03/11/2014 15:30:15
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gNick wrote:

This has got me looking at Hilti TE-6As on ebay, the problem being the significant risk that replacing batteries and charger may be necessary after which you find that the drill itself is worn out...


Buy new. You will get a lifetime warranty on the gearbox and hammer drive, which are all that can ever wear out, but they never do! Replacement chuck £35 but I've never seen one needing to be changed apart from poor maintenance (SDS chucks need greasing weekly). Batteries....if you drill all day six days a week and constantly flatten and charge the batteries you would get two years from the batteries. In hobby use they effectively last for ever. IMHO buying anything other than Hilti is a false economy for anything other than putting up the odd shelf at home. And no, I don't work for them....Laugh

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royfellows

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SDS Drill capacity comparison
Posted: 03/11/2014 16:37:29
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I have bought a load of stuff off eBay and been lucky every time, but then again the word is lucky. I tend to look at stuff and go by gut feelings, maybe I have a feel for it after years of ducking and diving at car auctions.

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gNick

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SDS Drill capacity comparison
Posted: 03/11/2014 18:40:42
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sinker wrote:


Buy new. You will get a lifetime warranty on the gearbox and hammer drive, which are all that can ever wear out, but they never do!


So why buy new?

sinker wrote:


Replacement chuck £35 but I've never seen one needing to be changed apart from poor maintenance (SDS chucks need greasing weekly). Batteries....if you drill all day six days a week and constantly flatten and charge the batteries you would get two years from the batteries. In hobby use they effectively last for ever. IMHO buying anything other than Hilti is a false economy for anything other than putting up the odd shelf at home. And no, I don't work for them....Laugh

So Hilti TE-6As are the dog's danglies but also ferociously expensive for something used every once in a while.

I will be seeing the local Hilti rep on Wednesday but I doubt he can give me a significant discount, unfortunately. Must buy a winning lottery ticket Laugh

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sinker

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SDS Drill capacity comparison
Posted: 03/11/2014 18:56:22
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gNick wrote:



So why buy new?


So Hilti TE-6As are the dog's danglies but also ferociously expensive....


Guarantee is to the original purchaser IIRC. Check with the rep?

Expensive yes but its all relative I s'pose. Use the same drill for ten years as opposed to a cheaper make that wouldn't last as long and I bet the "cost per hole drilled" would be less?
I kept my last Saab for 11 years and did 385,000 miles. Sharp intake of breath when you write the cheque to buy it but cost per mile etc = pennies...? Again the latest Saab is now 7 years old but, teething problems aside, 190,000 miles and still going strong. Paid for its self several times over. Touch wood!!!

Sorry.... Off Topic Oops

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royfellows

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SDS Drill capacity comparison
Posted: 03/11/2014 22:32:08
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and Roys famous red Mazda with moss growing round the windows and grey back wing was originally bought 3 yrs old and £3K off the hammer at BCA Walsall with 80K on the clock. By time it went to the junkyard it had done 250K and apart from the usual services/pads/tyres only ever needed a ball joint.
All different peoples experiences

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John Lawson

Joined: 09/12/2010
Location: Castle Douglas Dumfries & Galloway

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SDS Drill capacity comparison
Posted: 05/11/2016 23:01:41
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Just reserecting an old topic!
Bosch have brought out a couple of new drills, both of which are of interest to us.
GBH 36VF-Li drill and the GBH 36V-EC.
The former is a lighter version of their 36Volt SDS drill, with attached LED light! It also has an electronic anti-kick back device, and is 2 speed!
The latter is a brushless SDS drill, and is super lightweight only coming in at 2.9k!
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RAMPAGE

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SDS Drill capacity comparison
Posted: 05/11/2016 23:31:35
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Love Bosch drills, except the larger of the two 18v units, which are rubbish. The smaller 18v one is superb. We have a hilti 22v kit which is nice, easily doing 28mm diameter holes about a foot deep around two to a battery.

I've just acquired what must surely be the biggest self-contained portable drill ever - the Atlas Corpo 148 with integrated petrol engine, 7/8" hex drive and forced air clearance. Nice to be able to use proper mining steels finally, which come up to 10m long Smile
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Manicminer

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Joined: 29/04/2007
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SDS Drill capacity comparison
Posted: 06/11/2016 06:03:15
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You don't want to be using petrol driven equipment underground - carbon monoxide


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Morlock

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SDS Drill capacity comparison
Posted: 06/11/2016 07:36:56
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Whilst drilling machine quality (and battery technologies) are continually improving a very significant factor in any drilling operation is the bit condition. IP: 86.181.120.249
RAMPAGE

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SDS Drill capacity comparison
Posted: 06/11/2016 09:02:03
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Manicminer wrote:

You don't want to be using petrol driven equipment underground - carbon monoxide


Quite true, but I wasn't intending on using it underground!
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ebgb

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SDS Drill capacity comparison
Posted: 06/11/2016 11:21:24
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my 24v makita will sink at least a 12 to 15 12mm x 100mm holes on a single battery in heavy/hard ground (silicated ironstone type schizzle). in lighter sandstones it will double that number


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TheBogieman

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SDS Drill capacity comparison
Posted: 06/11/2016 13:12:45
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Now what are you up to, Miles, trying to break into the Lost World from the surface? Wink
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TheBogieman

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SDS Drill capacity comparison
Posted: 06/11/2016 13:19:48
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For replacement batteries, we (PUG) have used the Component Shop near Bangor, N Wales (www.componentshop.co.uk) to rebuild the battery packs for our drills. He knows his stuff and only uses top notch kit. He'll build special sized banks as well as rebuilding within your current battery pack housing. IP: 86.172.172.214
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