| Author |
Message |
    
Gerald_D
Registered
Username: Gerald_d
Post Number: 44
Registered: 11-2005
| | Posted on Sunday, April 30, 2006 - 08:49 am: | 
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Can more people help to fill in the gaps please...
ShopBot has used:
Pre-2000.......PK266 belt reduction..........?
Mid-2000 the PRT was launched with Oriental Motor Vexta PK299-01AA motors directly driving 20-24tooth pinions.
Feb-2001 the PRT changed to geared motors from Oriental Motor Vexta geared PK296-SG motors(Gear ratio was first 7.2:1 with 30 tooth pinion, then 3.6:1 with 25 tooth pinion). ShopBot had special versions made for them with lower backlash gears and a good wire anchor - part no. A6497-9412KTG
April-2004 the ShopBot PRT Alpha was launched with the Oriental Motor AlphaStep AS911 directly driving 20 tooth pinions.
ShopSabre?
Techno-Isel?
E-Z Router?
Practical CNC?
Others?
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ralphH
Unregistered
| | Posted on Tuesday, May 16, 2006 - 04:52 pm: |
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The late prt benchtop has 20 tooth pinions, which I see as a plus. I have no gantry machine to compare with, but with sharp cutters and care the finish is pdg.
R. |
Normand Blais
Registered
Username: Normand
Post Number: 1
Registered: 01-2006
| | Posted on Thursday, October 12, 2006 - 01:56 pm: |
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my 2003 sb prt96 has A6497 9412KTG SB296 2TH36 motor. |
John Seiler
Registered
Username: Jseiler
Post Number: 1
Registered: 09-2006
| | Posted on Thursday, October 19, 2006 - 09:49 pm: |
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my pr-32 has pk266-02a's direct drive to ball screws. |
Robert Cheal
Registered
Username: Robert_cheal
Post Number: 13
Registered: 08-2006
| | Posted on Friday, October 20, 2006 - 09:43 pm: |
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My early 2001 PRT has Oriental Motor Vexta geared PK296-SG motors, gear ratio 7.2:1 , .25" steps (all 4 motors), with 30 tooth pinion on X and Y. The Z axis has 25 tooth as near as I can tell.
My machine setup seems less common and I don't know the ryhme or reason as to what it all really means. |
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