Compare Chineese Lathes

   / Compare Chineese Lathes #51  
I see:))

On similar note, I have access now to Bridgeport 2HP at the shop I work for some pocket money. That thing is a beast with rotary table and lot of tooling, I am trying to learn as much as possible; I had much more theory on machining in my life than real hands on experience.
 
   / Compare Chineese Lathes
  • Thread Starter
#52  
Do these machines have a threading dial on the lathe? The second thing I made on my lathe had threads and I made a few more pieces after that. There are some threading videos on youtube that help. Overall I found it is not as hard as it is made out to be for short pieces. Takes lots of small passes so I would probably buy threaded rod as well if that is all I needed.


I found the MIT TechTV Machine Tool videos to be helpful for basic machine knowledge and some ideas on how to do things. Here is the one for Lathes, other videos cover mills, basic power tools etc.

MIT TechTV – Machine Shop 8

Charlz, thanks for the video link. I checked the lathe video. Very large upload. Quite basic but still good to watch for a beginner like me.

Yes I believe the 3 in 1 machine that Guglio has and the one I am considering has a thread dial.

Hint - For those with a clone machines (same model by different brand names), the cheaper brands, especially Harbor Freight, have minimal operator instructions. You can sometimes find much better instructions by looking for downloadable instructions for the same machine by a different brand. Grizzly and Jet normally have much more complete operator manuals and instructions.

One thing I am doing in my research for the right machine is to look at the operator manuals. This can often give me a better understanding of the features and capabilities better than raw specifications. EG. many will have threading capabilities but the complications of use will vary depending on a specific machine's features.
 
   / Compare Chineese Lathes #53  
Threading bits can be a pain to grind, one recomendation is to purchase brazed carbide bits, they have the right angles, on smaller machines set the compound slide to 30 degrees and make the cut depth with the compound, this way the cross slide is allways set to the same and no remembering what it was last set to, if you have the option to reduce the shaft diameter after the threads you avoid turning the cross slide out with the feed engaged, less rushing at the end.
 
   / Compare Chineese Lathes #54  
One other recomendations for threading, my lathe has over a hunders combinations of thread pitches, bet in 20 years only used 20, for most threads under 3/4 inch a die set is a good investment and use the tailstock to lign it up,
 
   / Compare Chineese Lathes #55  
Just a quick note on my experience with off shore lathes. I have a Taiwan made milling machine that has been awesome. Never needed anything, so I purchased my lathe from Busy Bee in Canada. Their tag is "Craftex". Fit and finish of the lathe looked great, everything seemed in place. First thing I did was remove the lid to inspect the gear head. Drained the oil and cleaned out the swarf, floor sweepings and grinding remnants out of the gear box. This is not a joke. Always open the units and inspect inside. Once that was done, cleaned and oiled the cross slide, compound, etc. Off shore manufacturers seem to like using their used grease when preparing new machines. Again, this is not a joke. Started it up and was very happy with the three jaw chuck. Thought I would test out the four jaw, but couldn't get the 3 jaw off. After about three hours, I was able to get the chuck off. It was if it was attached with a 120 Ton hydraulic press. When I attached the four jaw, it had about 10 thousands slop on the taper for the D1-4. I called company support and they thought the D1 locks centered the chuck, didn't realize a D1-4 had a taper. They tried to be helpful and were happy to replace the chucks. Luckily the face plate taper was fine. Removed the jaws on both chucks and cut a new taper in the three and faced off the four until the taper was correct. Once this was done, I was able to mount the chucks and the machine tested out fine. Bed and everything else has been great. Moral of the story: Expect to do some fine tuning with off shore equipment. I got what I paid for and am now happy with the result. Don't make the mistake of expecting American quality with off shore prices. This doesn't mean they are a bad deal, just don't expect a $10,000 lathe for $3600. Also, don't expect an old worn out American lathe to be superior. Always take an experienced user to assess used equipment if you don't have a machining background. Buying worn out equipment doesn't pay either.
 
   / Compare Chineese Lathes #56  
Drained the oil and cleaned out the swarf, floor sweepings and grinding remnants out of the gear box. This is not a joke. Always open the units and inspect inside.
We occasionally see a new Jinma owner say the same thing.

I've wondered if adding that junk in there is China's solution to hazardous waste disposal! :p
 

Tractor & Equipment Auctions

JOHN DEERE 524L LOADER (A51242)
JOHN DEERE 524L...
1262 (A50490)
1262 (A50490)
AGT Agrotk 680 Drop Hammer Attachment (A47384)
AGT Agrotk 680...
2019 JOHN DEERE 331G SKID STEER (A51242)
2019 JOHN DEERE...
New Kivel Walk Behind Pallet Forks (A50774)
New Kivel Walk...
LOT LOCATIONS (A51219)
LOT LOCATIONS (A51219)
 
Top