Product category:
Machinery and Production Equipment
News Release from: Marcrist International | Subject: DCU700 dry diamond core drill
Edited by the Engineeringtalk Editorial
Team on 26 January 2001
Drill tackles seven-inch deep concrete
floor
When Invensys Brook Crompton needed to cut through a seven-inch deep concrete floor, it was a Marcrist DCU700 dry diamond core drill which proved the quickest, easiest and most cost-effective option
When industrial motor manufacturer, Invensys Brook Crompton, needed to cut through a seven-inch deep concrete floor, it was a DCU700 dry diamond core drill from Marcrist International which proved the quickest, easiest and most cost-effective option Invensys Brook Crompton is based at Guisley in Leeds and manufactures large industrial motors of anything from 15kW to 650 kW
The company needed to install a temporary test facility in a short time scale, but faced the problem of how to attach it to a concrete surface, as production engineer Allan Dorling explained.
"The area where the facility was to be built was covered in seven inches of concrete, and the cast iron base plates of the test bed needed to be securely bolted down," he said.
"Normally we would use chemical bolts, where a resin holds the bolt in place, but they weren't suitable in this case since, with a combined weight of around seven and a half tonnes, we needed a substantial pull-down." The company approached Marcrist distributor City Electrical Factors (CEF) for advice on how best to tackle the problem.
CEF arranged for Marcrist to demonstrate its DCU700 diamond core drill, which proved just as capable of coping with a heavy industrial application as it is with everyday use.
"Because of the depth of concrete, we needed a drill of a special length," explained Dorling, "and yet Marcrist made it for us within two days.
It was over 300mm long and 127mm in diameter.
It cut straight down, took out the concrete slug and that was it.
Quite unbelievable." "It's enabled us to drill four holes down to the hardcore below the concrete," he continued.
"We've then raked the hardcore clear of the bottom of the hole, placed bolts in the holes and concreted them in.
"The alternative would have been to use a jack-hammer, but that leaves large lumps of concrete broken away, plus it takes a lot longer.
This way only took an in-house fitter three hours.
By using Marcrist's diamond core we've been able to quickly bore a localised hole, the size we need and in the place we need it.
I'd recommend it for anyone installing any sort of plant.
"We were able to put so much torque on the bolts to pull the test beds down that we've managed to achieve virtually zero vibration," he added.
"This is because we were able to concrete the bolts in, which in turn is due to the Marcrist diamond core.
We couldn't have achieved that with an inset bolt or a chemical bolt." The other factor which impressed Dorling was the cost.
"When we've had slugs removed in the past it's cost ?200-?300 a time using outside contractors," he said.
"Now we've purchased this tool we can use it again and again, and it's driven with an ordinary 600 Watt drill.
It's a real asset to us." Marcrist's DCU700, like all the other dry diamond core drills in its range, provides a quick and easy method of cutting through a wide range of materials using a traditional 2kg drilling machine.
All Marcrist dry diamond core drills can be used with dust extraction and even water cooling and flushing if required.
• Marcrist International: contact details and other news
• Email this article to a colleague
• Register for the free Engineeringtalk email newsletter
• Engineeringtalk Home Page
Search the Pro-Talk network of sites
