I took a little vacation, and for some reason I can't open those files. I would love to look at the manual. Also I was wondering if anyone can help me put a manufacture year to my machine? Where would I find it. I have scoured the lathe looking. Thanks. http://i1068.photobucket.com/albums...1-A14D-49F6-B336-CC28287F38E1_zpsmggjcuar.jpg
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Rockwell 25-OX6
- Thread starter oneIwilly
- Start date
- Joined
- Dec 25, 2011
- Messages
- 10,511
Willy,
The instructions for use of the threading dial given at the link Matt posted would seem to apply to your Rockwell, as you mentioned that your threading dial is numbered 1, 2, 3 & 4. However, the instructions were in error in one statement. There must have always been two schools of thought on how best to mark the threading dial to achieve the minimum number of cross-thread errors like you had. Some lathes (including Rockwell) apparently) have 4 numbered marks on the dial, 1 through 4. Some have four marks but only the 1st and 3rd are numbered 1 and 2. The rules for these dials are:
For even numbered threads, use any mark to start and any mark for subsequent passes. For odd numbered threads, use any numbered mark to start and any numbered mark to continue. For half threads, use the same mark for subsequent passes as you started with (some instructions just say use #1, period).
So with your 10 tpi, you should also be able to engage at 1 and 3. To prove it to yourself, after cutting the thread using 2 or 4 stop the motor, back the cutter out, and move the carriage until 1 or 3 lines up with the witness mark. Advance the cutter and you should find that it is in the thread.
The instructions for use of the threading dial given at the link Matt posted would seem to apply to your Rockwell, as you mentioned that your threading dial is numbered 1, 2, 3 & 4. However, the instructions were in error in one statement. There must have always been two schools of thought on how best to mark the threading dial to achieve the minimum number of cross-thread errors like you had. Some lathes (including Rockwell) apparently) have 4 numbered marks on the dial, 1 through 4. Some have four marks but only the 1st and 3rd are numbered 1 and 2. The rules for these dials are:
For even numbered threads, use any mark to start and any mark for subsequent passes. For odd numbered threads, use any numbered mark to start and any numbered mark to continue. For half threads, use the same mark for subsequent passes as you started with (some instructions just say use #1, period).
So with your 10 tpi, you should also be able to engage at 1 and 3. To prove it to yourself, after cutting the thread using 2 or 4 stop the motor, back the cutter out, and move the carriage until 1 or 3 lines up with the witness mark. Advance the cutter and you should find that it is in the thread.
- Joined
- Dec 25, 2011
- Messages
- 10,511
Unfortunately, Rockwell is another brand that does not appear in the Serial Number Reference Handbook. I bought a copy of it year before last, and the last two dozen times that someone asked the Age question, the machine brand in question was not included. If someone still sells Rockwell parts, you might try calling and asking them. Atlas put dates on their spindle bearings but no one has mentioned anything similar on the Rockwell machines.
