For Lenses up to 3 Inches in Diameter.

Introducing the ARP-231-CR Grinder-Polisher

This two spindle machine is designed to process up to 3” diameter (76 mm) steep curve (0-2”radius) optics. Our ARP series polishers have been in use for small spherical and aspheric optics for over 15 years. This new machine utilizes the same geometry and concepts as the other ARP machines with an expanded work envelope for larger optics. The ARP-231 is an aggressive machine with counter-rotating top motors and a unique down force set point which uses regulators and pressure gauges to accurately determine the polishing force. This machine is a steep curve (hemisphere) polisher. The arcing axis is adjustable to bring it into alignment with the lens vertex. The lower spindles are available with threads or tapers to match your tooling. The control panel features digital tachometers for the lower spindles and the oscillation motor. The oscillation stroke is adjusted by conventional eccentric offset. The top motors have independent speed control. Precision ball slides are utilized throughout the machine for rigidity. Loading is facilitated by a neutral (weightless) mode on the top motors. When the cycle is started, down force is applied and is indicated by the individual pressure gauges for each spindle. At the end of the cycle (or manual stop), the top motors stay engaged with the tools and are manually lifted to unload the tools. A convenient switch for each top motor locks it up if only one spindle is to be operated. The Body and most component parts are stainless steel or anodized aluminum.

Specifications:
Power 120 VAC, 10 amps, 60 Hz
Air 100 psi, 1 c.ft/min
L x W x H: 27 X 18 X27 (1935 x 457 X 1935 mm)
Weight: 70 # (32 kg)
Lower spindle speed 0-600 RPM
Top motor speed 0-150 RPM
Oscillation speed 0-50 RPM
Stroke 60 degrees
Lower to top spindle lateral offset 0.25” (6.35mm)
Down force 20# (9 kg)