12-18-2014, 09:18 PM
First question is does the Powermatic come with the same tooling?
Next, are they both manual reciprocation, or is the Powermatic a hydraulic?
The Harig 612 is a well regarded grinder, I know nothing about the Powermatic. I have never taken apart a surface grinder spindle, but know well from other spindles that cleanliness is secondary to getting the bearings of the right grade, aligning and preloading the right way.
What is the spindle drive method on each? When it's a direct drive as it is on mine, the bearings are super critical for a good finish as everything from the motor is magnified. If it's belt driven, you have the belt helping to diminish any feedback from sketchy motor bearings.
Tough choice, Dr. Stan.
Ken
Next, are they both manual reciprocation, or is the Powermatic a hydraulic?
The Harig 612 is a well regarded grinder, I know nothing about the Powermatic. I have never taken apart a surface grinder spindle, but know well from other spindles that cleanliness is secondary to getting the bearings of the right grade, aligning and preloading the right way.
What is the spindle drive method on each? When it's a direct drive as it is on mine, the bearings are super critical for a good finish as everything from the motor is magnified. If it's belt driven, you have the belt helping to diminish any feedback from sketchy motor bearings.
Tough choice, Dr. Stan.
Ken