Welder Dave
Senior Member
Excellent!
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Drilling holes oversize in track shoes
- Thread starter OzDozer
- Start date
bccat
Senior Member
- Joined
- Jun 12, 2010
- Messages
- 463
- Location
- Langley B C
- Occupation
- Retired millwright,Heavy Equipment Operator
Get Issac, IC weld, on you tube, best man with a torch I have ever seen
OzDozer
Senior Member
Torching holes larger, and a requirement for tight-fitting bolt shanks are not two compatible moves, IMO.
We're talking about taking out 1/16" of metal, accurately, all round the holes.
Slightly oversize bolt holes in track shoes, means you will never be able to keep the track shoe bolts tight.
There's action happening on the Norseman drills - factory advises they've been shipped to my helpful HEF assistance man. He says he'll likely have them Friday 24th Nov., and they'll be on their way to me shortly after. I would hope they arrive by mid-December.
We're talking about taking out 1/16" of metal, accurately, all round the holes.
Slightly oversize bolt holes in track shoes, means you will never be able to keep the track shoe bolts tight.
There's action happening on the Norseman drills - factory advises they've been shipped to my helpful HEF assistance man. He says he'll likely have them Friday 24th Nov., and they'll be on their way to me shortly after. I would hope they arrive by mid-December.
Welder Dave
Senior Member
They could be torch cut but setting up a jig to do them accurately would be more trouble than it's worth.
.RC.
Senior Member
Yea I dunno why OzDozer does not just channel the skills of the Pakastani Truck Repairers.
To fix anything you only need an angle grinder, transformer stick welder and oxy.
The way with just a single welder and angle grinder they rebuilt the splines that the sprocket presses onto on the final drive hub of that D8K was just amazing.
To fix anything you only need an angle grinder, transformer stick welder and oxy.
The way with just a single welder and angle grinder they rebuilt the splines that the sprocket presses onto on the final drive hub of that D8K was just amazing.
Dunno, have done it on logging equipment without issues.
Granted shoes don't last terribly long before they break or bend on stumps.
Mcrafty1
Senior Member
They are adapt at getting by, Maybe where the old adage 'I've been doing so much for so long with so little, I'm now expected to do absolutely everything with nothing' came from.
Nige
Senior Member
Put in its most simple terms. Some people have standards, others don’t.
OzDozer
Senior Member
We can see the YooToob repairs done by the Pakistanis, but we don't see the short lifespan they get out of those gyppo repairs.
We've all tried to cut corners, it never pays. There's nothing like doing the job properly, so the item meets the original standard, and performs like the original.
The Pakistanis old Cat gyppo repairs can only fail with rarely anyone getting hurt - but I wouldn't want to be sharing the road with some of the trucks they repair.
You gotta remember, this is the place where the newspapers stated a few years back, that they'd only report road crashes where more than 20 people were killed in the one crash, because the smaller crashes where only a few were killed, were taking up too much newspaper space.
We've all tried to cut corners, it never pays. There's nothing like doing the job properly, so the item meets the original standard, and performs like the original.
The Pakistanis old Cat gyppo repairs can only fail with rarely anyone getting hurt - but I wouldn't want to be sharing the road with some of the trucks they repair.
You gotta remember, this is the place where the newspapers stated a few years back, that they'd only report road crashes where more than 20 people were killed in the one crash, because the smaller crashes where only a few were killed, were taking up too much newspaper space.
Mcrafty1
Senior Member
I especially like how they gather around out in the front yard in the dirt, around a pan of dirty fuel and reman those big diesel truck engines. It's always a pleasure if they take the crank shaft into the back room, weld on the bad journals and re-cut them on those antique (well worn in) laths. Makes me wish they had a shop closer to me.
OzDozer
Senior Member
O.K. - Houston, we have the rockets fully fuelled. The 2 x 5/8" Norseman drills arrived a couple of hours ago.
Unfortunately, against the shipping aspect, I had a deficiency in communication with my helper, with regards to the shipping method.
I assumed my shipper would get useful advice from USPS, but he got a complete bum steer, and got told a whole pile of rubbish about USPS shipping methods and timing - whereby he got told it would take 60 days to get Down Under - so he shipped the drills air freight, and Fedex reamed me senseless, with no lube, and not even a thank-you kiss. We live and learn. And I've just had another lesson re assumptions.
For general interest, USPS do Global Priority Mail parcel boxes in a range of sizes, and they're much cheaper than anyone else, and the items only take about 14-21 days to get Down Under.
The small Priority Mail boxes start at about US$30 and they'll take up to 4lbs. The large boxes take up to 20lbs.
Fedex ripped me off for 5 times that USPS charge, for just 0.7lb in weight - but I will give them, they delivered within 7 days.
The Norseman factory took nearly 6 weeks to do a production run of these drills, so that's where all the delay came from.
Now, all I have to do is get them to my client, another 1,120kms (695 miles) away, so he can start on trying them out on the track shoes.
I'm still preparing his track chains, to make up 2 x 36 link chains for him, from a mixture of track chain lengths I've got, so he's got some time yet, to drill out 288 holes in 72 track shoes!
I'll ask him to send me some photos of his success rate with the Norseman drills. They look promising.
They've got four very business-like-looking flutes, as against the 2 flutes of regular drills, so I guess that's where they get their "Premium" description from.
Unfortunately, against the shipping aspect, I had a deficiency in communication with my helper, with regards to the shipping method.
I assumed my shipper would get useful advice from USPS, but he got a complete bum steer, and got told a whole pile of rubbish about USPS shipping methods and timing - whereby he got told it would take 60 days to get Down Under - so he shipped the drills air freight, and Fedex reamed me senseless, with no lube, and not even a thank-you kiss. We live and learn. And I've just had another lesson re assumptions.
For general interest, USPS do Global Priority Mail parcel boxes in a range of sizes, and they're much cheaper than anyone else, and the items only take about 14-21 days to get Down Under.
The small Priority Mail boxes start at about US$30 and they'll take up to 4lbs. The large boxes take up to 20lbs.
Fedex ripped me off for 5 times that USPS charge, for just 0.7lb in weight - but I will give them, they delivered within 7 days.
The Norseman factory took nearly 6 weeks to do a production run of these drills, so that's where all the delay came from.
Now, all I have to do is get them to my client, another 1,120kms (695 miles) away, so he can start on trying them out on the track shoes.
I'm still preparing his track chains, to make up 2 x 36 link chains for him, from a mixture of track chain lengths I've got, so he's got some time yet, to drill out 288 holes in 72 track shoes!
I'll ask him to send me some photos of his success rate with the Norseman drills. They look promising.
They've got four very business-like-looking flutes, as against the 2 flutes of regular drills, so I guess that's where they get their "Premium" description from.
Attachments
.RC.
Senior Member
I would be reminding the driller that if they want the drills to last, flood the area with cutting oil (I am sure they will have heaps of sump oil or gearbox oil lying around ready to return it to the earth) and when they do it and slow and steady.
terex herder
Senior Member
Oil is a lubricant, water is a coolant. Needs cooling more than lubricating. Add washing soda to tap water to mostly eliminate rusting, does leave white powder. Those look to be what we call core drills. I'd probably start about 125-150 rpm.
DDoug
Formerly digger doug
It needs both, getting this wrong out in the way out outback
has consequences.
Bad ones.
So flood the oil, and keep the speed down.
Welder Dave
Senior Member
The wax type lubricant would work good. It comes in a tube that looks like a tube of grease. It's commonly used with annular cutters as it doesn't fling off.
As far as FedEx they have some ridiculous charges that other carriers don't have.
As far as FedEx they have some ridiculous charges that other carriers don't have.
Old Growth
Well-Known Member
The proper way to quickly and accurately solve this problem with a torch is with a tapered drift.
Heat the edge of the hole till its red and hammer a very lightly tapered drift in it till a 5/8 bolt fits nicely but not to snug.
I worked at a quarry and we had to drill hard plate all the time. It was less than pleasant.
Usually you would make a red circle with the torch to soften the material and then use the mag drill to start the horrible task of drilling the hole in the bugger.
Boss told me if he ever seen me torch holes, I was in big trouble since poopy holes and vibrating crushers/screen/shakers will eat the bolts alive.
I showed him how I would torch a nice round hole and then get it red and clean it up with a tapered drift to its final size. He was super happy with the FAST and EASY results.
I NEVER had to pack that dang heavy mag drill up on the shaker boxes and conveyor chutes again.
I use this method on TONS of things. The ONLY con, is the edge of the hole will get a slight swell right at the lip when the material is pushed round/up. I tiny bit of work with a flap wheel/grinder will leave you a nice flat edge again.
Its super easy and very quick.
Just my $0.02
Heat the edge of the hole till its red and hammer a very lightly tapered drift in it till a 5/8 bolt fits nicely but not to snug.
I worked at a quarry and we had to drill hard plate all the time. It was less than pleasant.
Usually you would make a red circle with the torch to soften the material and then use the mag drill to start the horrible task of drilling the hole in the bugger.
Boss told me if he ever seen me torch holes, I was in big trouble since poopy holes and vibrating crushers/screen/shakers will eat the bolts alive.
I showed him how I would torch a nice round hole and then get it red and clean it up with a tapered drift to its final size. He was super happy with the FAST and EASY results.
I NEVER had to pack that dang heavy mag drill up on the shaker boxes and conveyor chutes again.
I use this method on TONS of things. The ONLY con, is the edge of the hole will get a slight swell right at the lip when the material is pushed round/up. I tiny bit of work with a flap wheel/grinder will leave you a nice flat edge again.
Its super easy and very quick.
Just my $0.02
Welder Dave
Senior Member
Maybe wait and see how the Norseman enlarging bits work before suggesting they won't work. 244 1/16" larger holes very accurately cut with a torch would be very difficult. Heating them all up red hot to pound a punch in would also be a bit tricky and expensive. Do you heat a hole hot enough to stay red hot while you shut the torch off so you can grab a punch and hammer, set the torch down while still lit and grab the hammer and punch or do you leave the torch on while a helper goes behind with the hammer and punch? If the Norseman bits work would be the easiest solution even it takes a little bit longer than conventional drilling. If the bits are at all similar to annular cutters they might work even better than expected. You don't need to use a mag drill but you probably could.
Old Growth
Well-Known Member
Heating holes on the edge is fast. Its not like trying to get a raspberry in the middle of plate steel.
A dozen circles/swirls around the hole, set the torch across the corner of the table with the tip pointing at the ground and then hammer a drift in. Worn D4 pads are about .25-.325" thick.
I didn't say it was a better method, just another option.
I just know that my experience with enlarging hardened holes with a drill bit style cutter usually leaves me with a bunch of bits with the sides stripped off and the corners chipped off of them no matter how much oil and how slow I spin them. Just my experience.
I hope the gent in the outback can just chuck up these magic bits a swirl thru them like butter.
Unfortunately the pessimist in me is not so optimistic, lol
A dozen circles/swirls around the hole, set the torch across the corner of the table with the tip pointing at the ground and then hammer a drift in. Worn D4 pads are about .25-.325" thick.
I didn't say it was a better method, just another option.
I just know that my experience with enlarging hardened holes with a drill bit style cutter usually leaves me with a bunch of bits with the sides stripped off and the corners chipped off of them no matter how much oil and how slow I spin them. Just my experience.
I hope the gent in the outback can just chuck up these magic bits a swirl thru them like butter.
Unfortunately the pessimist in me is not so optimistic, lol