Custom Vacuum Chuck Assembly Steel Block Linear Bearing Pneumatic 23x21cm Al

Custom Vacuum Chuck Assembly Steel Block Linear Bearing Pneumatic 23x21cm Al Base

This is a custom-built vacuum chuck assembly designed for precision workholding using pneumatic vacuum actuation. The assembly combines a flat ground steel block, a linear bearing for smooth lateral movement, micrometer adjustment screws for fine positioning, and a lever-style toggle clamp arm — all mounted on a rigid aluminum base plate. Pneumatic spanner switches on either side control vacuum line actuation. A label reading what appears to be a part or lot identifier is visible on the toggle clamp bridge.

Specifications & What's Included

• Type: Custom vacuum chuck assembly
• Base plate: Aluminum, 23 x 21 cm
• Chuck block: Flat ground steel, two 2.5 x 9.2 cm pieces
• Steel block surface: Finely ridged/grooved for workpiece contact
• Clamp mechanism: Lever-action toggle clamp arm (zinc/steel, over-center locking)
• Pneumatic connections: Spanner switches for pneumatic vacuum lines (blue and clear tubing present)
• Linear bearing: Present — mounted to aluminum base for lateral axis travel
• Micrometer screws: Present — one dial missing
• Braided ground/shield wire attached to base
• Pneumatic quick-connect fittings with red dust caps visible on both sides
• Mounting: Benchtop / freestanding on aluminum base

Applications

Vacuum chuck assemblies of this type are used to hold flat workpieces — such as semiconductor wafers, glass substrates, ceramic tiles, or thin metal blanks — securely in place during precision machining, grinding, lapping, inspection, or processing operations. The combination of pneumatic vacuum actuation and a linear bearing allows the workpiece to be positioned with fine control and then locked down without mechanical clamps that could damage delicate surfaces. Micrometer screws provide repeatable fine adjustment of the chuck or workpiece position along an axis. This style of custom fixture is common in semiconductor fabrication shops, precision optics grinding, and advanced manufacturing environments where consistent flatness and positional accuracy are critical. The toggle clamp arm provides a quick-release mechanical hold in addition to the pneumatic vacuum, a common arrangement for process reliability during tool changes or substrate loading.