G0602 spindle problem

kwoodhands · Friday at 12:52 AM

I had no luck removing the bearing with heat. I took the spindle to a bearing supply and bought new bearings. I was told to cut the old bearing off . I used a Dremel tool and it took less than 1 minute . I was told to use the new outer races . Not sure how to remove them , maybe the Dremel tool.
Tomorrow I will take the spindle and bearings to a garage and ask if they can press the bearings on. I never thought to sand the spindle slightly . Hopefully the garage can press the bearings on.

kwoodhands · Friday at 5:43 PM

kwoodhands said:
I had no luck removing the bearing with heat. I took the spindle to a bearing supply and bought new bearings. I was told to cut the old bearing off . I used a Dremel tool and it took less than 1 minute . I was told to use the new outer races . Not sure how to remove them , maybe the Dremel tool.
Tomorrow I will take the spindle and bearings to a garage and ask if they can press the bearings on. I never thought to sand the spindle slightly . Hopefully the garage can press the bearings on.

I called and went to at least 8 places. Finally I got an answer to a Hydraulic business that has a press.
I have to wait til Monday. I got there too late today.

L98fiero · Saturday at 9:39 AM

kwoodhands said:
I called and went to at least 8 places. Finally I got an answer to a Hydraulic business that has a press.
I have to wait til Monday. I got there too late today.

Depending on the size of the bearing, you can also shrink the bearing on by heating it in clean hot oil, at least 200°F but not more than 250°F, it would even help to put the spindle in the freeze, the greater the difference in temperature the better. You won't have a lot of time to get it in place but it will work. Also, when it drops on, hold it to the shoulder or it can move. Note that it doesn't work well for small bearings as they don't expand enough and will cool too quickly to allow it to be put in place.

ChazzC · Saturday at 11:54 AM

L98fiero said:
Depending on the size of the bearing, you can also shrink the bearing on by heating it in clean hot oil, at least 200°F but not more than 250°F, it would even help to put the spindle in the freeze, the greater the difference in temperature the better. You won't have a lot of time to get it in place but it will work. Also, when it drops on, hold it to the shoulder or it can move. Note that it doesn't work well for small bearings as they don't expand enough and will cool too quickly to allow it to be put in place.

Toaster oven works well.

kwoodhands · Tuesday at 8:53 PM

This was quite an adventure. I got to the business that could press the bearing on. They made me wait an hour and then told me to come back Monday. Went home and decided to press the bearing on come hell or high water. I have a 5'-0" wood plank bench , bolted two 4x4's to the bench with 1/2" bolts . I placed a 10 ton hydraulic jack at the left end of the bench. I cut a piece of 2" diameter pipe 9" long. Installed the large spacer against the bearing to prevent scarring the bearing. Added 2x3 's along side the pipe to keep it straight. Proceeded to push the pipe against the bearing with 10 ton jack. I found that this jack will not work in the horizontal position. It pushed the pipe about 3/4" and stopped.
Went in the shed and got a 12 ton jack, this leaks oil . That is why I did not use it at first. The jack worked in the horizontal position. I'm pumping the jack and it is moving but the pipe does not move.
I look at the set up and could not believe my eyes. The 2x12 bench was bowed up in the middle about 2". Released the jack. Went to the shed and added another plank to the bench. This worked.
I pushed the bearing up on the spindle.
Installed spindle and attempted to install he bearing on the pulley end. I tried to pull the bearing up with a 5/8" all thread , nuts and washers. Had some success. I removed the all thread and the bearing. Measured the spindle and the bore. The spindle was .0055 larger than the bore.
I then found out that these cheaper lathes are made like that to insure accuracy. Makes no sense but was told to reduce the spindle diameter to .0015 larger than the bore. Then pull the bearing up with the all thread. The way I reduced the spindle was to make a wood yoke with sand paper glued to each half. The yoke was split in half and put back with two 10/32 x 1-1/2" machine screws. Took several hours to reduce the bore by hand. Finally , the spindle was was installed. Added spacers , plastic gear and tried to install the pulley. To tight , I set the pulley up on a rotary table and took maybe .002 off the pulley bore. This worked, tight fit but all thread pulled it up. Then I installed the belt without the banjo connected. Worked fine, no noise no slop . Connected the banjo and went back to machining.
Tomorrow I'll change transmission oil. I usually do this yearly.
Thanks to all that responded, big help. I was nervous about the whole process as I am almost 81 years old and did not want the aggravation. Now I am glad that I did, hope I do not have to do this again.
Thanks again mike