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Item # Model 20, Bench Top Lapping/Polishing Machine- 20" (Pneumatic Lift)

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The Lapmaster model 20 (pneumatic lift) is a bench-mounted unit with a heavy duty, carbon steel weldment base. The machine is of the “ring lapper” or “planetary lapper” configuration, enabling high standards of flatness and surface finish to be routinely achieved.

The model 20 is derived from the popular model 12 and 15 machines but features a steel weldment base instead of cast aluminium. A scaled-up lapping plate, conditioning rings and convenient “wrap-around” worktable combine to form a unique package. (The model 20 is the largest bench-mounted machine in the USA offered by any company.)

The machine is equipped with a pneumatic system for prescribed down pressure adjustment on workpieces. The pneumatic system incorporates OSHA control circuitry and air logic which provides total operator safety through two-hand, anti-tie down operation of the pressure plates.

In-process lap plate flatness control is provided for by three conditioning rings, which locate in yokes fitted with roller bearings. Workpieces are located within carriers or appropriate fixtures which run within the rings. Large parts of cylindrical shape can be substituted for the rings.

The model 20 is ideally suited for lapping normal and high production quantities. In-shop lapping reduces costs of component processing and equipment maintenance programs. Worn parts are reconditioned and salvaged, thus eliminating scrap. Valve bodies, discs, gears, vanes, valve plates and shaft seals are a few of the components benefiting form the lapping process.

The model 20 is equally at home in the laboratory, processing diverse materials such as semiconductors, electro-optics, optics and ceramics. This machine is also available in a open face version. See appropriate data sheet.




 Specifications   Standard Features   Standard Tooling   Available Options   

Model Type
20

No. of Conditioning Rings
3

Ring ID
7.5 inches

Ring ID
191 mm

Plate Diameter
20 inches

Plate Diameter
508 mm

Standard RPM
70

RPM Range (with Variable Speed Drive)
0-70

Drive Motor - Lapper
1 HP

Drive Motor - Lapper
0.75 kW

Drive Motor - Polisher
1.5 HP

Drive Motor - Polisher
1.1 kW

Length (Open Face)
33 inches

Length (Open Face)
838 mm

Width (Open Face)
27 inches

Width (Open Face)
686 mm

Height (Open Face)
23 inches

Height (Open Face)
584 mm

Length (Pneumatic Lift)
33 inches

Length (Pneumatic Lift)
838 mm

Width (Pneumatic Lift)
27 inches

Width (Pneumatic Lift)
686 mm

Height (Pneumatic Lift)
38 inches

Height (Pneumatic Lift)
965 mm

Est. Shipping Weight (P/L)
850 lbs

Est. Shipping Weight (P/L)
385.6 kg


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