Anti-Vibration Optical Isolation Air Table Stand 28x36 Mask Aligner Spindle Lock

Anti-Vibration Optical Isolation Air Table Stand 28x36 Mask Aligner Spindle Lock

This is a heavy-duty pneumatic anti-vibration optical isolation air table stand built to support and precisely stage mask aligner optical platforms and similar sensitive optical equipment. The welded steel base frame uses pneumatic air isolation legs to passively damp floor vibration, providing a stable mounting surface for photolithography and precision optical instruments. The table surface measures 28 x 36 inches, sits approximately 26 inches from the floor, and is designed to hold heavy optical platforms weighing hundreds of pounds. A vertical optical column with a large-bore spindle bearing housing rises from the center of the table, and a labeled Spindle Lock mechanism is mounted to the column side. An articulating work shelf arm is attached to the frame. A Tripp Lite Isobar IB-8 8-outlet noise filter and surge suppressor power strip is mounted directly to the frame rail and included.

Specifications & What's Included

• Table surface dimensions: 28 x 36 inches
• Working height (floor to table surface): approximately 26 inches
• Isolation type: pneumatic air isolation (requires compressed air supply)
• Frame: heavy-duty welded steel, blue powder-coat finish
• Table top: steel surface with recessed T-slots, mounting holes, and sliding stage plates
• Optical column: vertical tower with large-bore ball bearing spindle housing on top
• Spindle Lock: labeled mechanical spindle lock panel on column
• Mobility: 4 heavy-duty swivel locking castors with spring-loaded leveling pads
• Pneumatic system: solenoid valve with red indicator, brass fittings, blue air lines, and distribution manifold on underframe
• Articulating work shelf arm with flat white shelf surface included
• Included: Tripp Lite Isobar IB-8 noise filter and surge suppressor (8 outlets, 4 isolated filter banks, third-level and maximum-level noise filtration)

Applications

Pneumatic optical isolation tables of this type are standard staging platforms in semiconductor photolithography — specifically for contact and proximity mask aligners used in wafer patterning. The air isolation system absorbs ambient floor vibration that would otherwise blur or shift the optical alignment between a photomask and a wafer during UV exposure, where sub-micron registration accuracy is required. Systems like this were in wide use in university microfabrication labs, MEMS research facilities, and small-volume IC production environments from the 1970s through the 2000s alongside mask aligners from manufacturers such as Karl Suss, Canon, and Perkin-Elmer. The spindle lock column configuration is characteristic of aligner systems that mount the optics head or lamp housing on a rotating or height-adjustable vertical spindle, allowing precise positioning and then locking it in place for repeatable exposures. Beyond photolithography, heavy pneumatic isolation tables of this size and construction are also used as bases for precision metrology instruments, laser systems, and other vibration-sensitive optical benches where floor-borne noise is a concern.