Upgrades and Repairs on a G0765 7x14 Mini Lathe!
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- เผยแพร่เมื่อ 12 เม.ย. 2016
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This is a longer video of my experiences completely disassembling my Grizzly 7x14 Mini Lathe to replace the motor pulley, as well as upgrade the plastic gears inside the headstock to Steel, and change out the Spindle's bearings from Ball Bearings to Tapered Roller Bearings. I also took the opportunity to give everything a thorough cleaning and make sure all of my gibs and ways were in good adjustment.
This project was seemingly daunting, but it went smoother and quicker than I even thought and the end result is well worth the money and effort.
I did use this as a general guideline as well as spindle pulling ideas:
www.arceurotrade.co.uk/project...
This is also a very helpful article for removing the spindle from the headstock:
www.mini-lathe.com/Mini_lathe/...
These are the parts I obtained from LittleMachineShop.com:
Tapered Roller Bearings littlemachineshop.com/products...
Replacement Motor Pulley
littlemachineshop.com/products...
Replacement Spindle Gears (Steel)
littlemachineshop.com/products...
littlemachineshop.com/products...
well it's a lathe
a trick for getting the first tapered cone bearing on is to place the shaft in the freezer overnight then place the bearing in an oven somewhere between 200-300 degrees F (just enough to expand the steel but not enough to affect the tempering) for a little while it should slip right on easily
Dude! I'm a septuagenarian awaiting the arrival of our lathe! You are an excellent instructor and are appreciated. Our Pugs really liked this video!
I remember when my gears broken and I replaced them that the high torque gear was close to the edge of headstock. I flipped them and had the crank reversed and that seemed to help a lot! Nice upgrade you made! Congrats.
I have done the metal gears and 16 inch bed swap all is well lots of time on mine since.
Just in the process of commissioning my new 7X14 now and itemizing all the upgrades I would need to give the lathe top performance and precision "out of the gate" so to speak. This was as excellent video - thanks
Thanks for the great work and effort amigo! I've been waiting for a great cut
a quick way to grease bears is to put the grease and bearing in a zip lock bag and close it up and work the grease into the bearings with your hands. This is much less messy way of doing it.
the way to grease the type of bearings , is put a dab of the grease in youre palm and press the bearing intoo it , you want to press the grease in between the rollers and the cage
I converted my head stock to hold oil best thing I ever did it was easy threaded a little sight glass . I also bought the upgraded gear kit all brass. But man if you don't lap them it is loud . Love my little guy . Be sure to use SHARP carbide tools and you can turn put nice work. Also I upgraded the tool rest screws to bearings on the trust washers trust me that is a huge difference later 😁👍
Very informative, thanks for sharing. You motivated me to upgrade mine. One caveat: I ordered the timing pulley from LMS & was a little surprised/disappointed to discover it's plastic.
Watching this video I thought I'd mention they make new belt and pulley set that give you more reduction they claim 40% more power. I believe the pulleys are metal too. Google 1.5x7 belt brings it up and it's about $40 (not sold by littlemachineshop) I plan on doing it to my lathe just thought I'd share this info
Like I mentioned on one of your other vids, you have come along way brother. Well done. I like your passion. Keep up the good work and I will keep watching.
I just bought this lathe, this helps so much!
Incredibly informative and well done! Subscribed!
what REALLY impressed me here was how those plastic gears magically changed into STEEL ones ...! WOW - alchemy
Listening to Abom while working on your lathe.....Nice!
hmmm? LMS HiTorque 7x16 Mini Lathe sounding like a good value considering the upgrades already built in. If it wasn't for shipping costs.
When you change out the ball bearings for the tapered rollers, the spindle shaft gears are free to float back and forth 3mm. This can cause a less than full contact between the input shaft gears and the spindle shaft gears. I used the 30mm wide plastic spacer to make two 8.8mm wide spacers to replace the original spacers (7.5mm wide) inside the headstock on the spindle shaft. The extra couple of tenths allow for a little clearance between the gears and bearings. Also, I made a new spacer to fit between the roller bearing and the spanner nut out of aluminum 28mm wide. The original plastic spacer (which was kind enough to donate itself for the two gear spacers) is to "plastic" to use for the spindle bearing preload as it easily deforms.
Great job. May have to try that upgrade in the future.