Internal Gears are offered in inch and metric sizes.

Press Release Summary:

S1E62Z-Series 20° pressure angle inch gears are offered in 303 stainless steel or 2024-T4 anodized aluminum, while metric gears in S1E05ZM, S1E08ZM, and S1E10ZM Series are supplied in 303 stainless steel. Metric gears in Modules 0.5, 0.8, and 1 are ISO Class 7 and come in 5, 8, and 10 mm face widths. They have 60-120 teeth and ODs from 50-150 mm. Inch gears, stocked in 6 pitches from 24-96 have 20-300 teeth and ODs from 1.998-3.998 in.

Original Press Release:

New Precision Internal Gears From Sterling Instrument Feature Wide Off-the-Shelf Selection By the Inch or By the Millimeter

New Hyde Park, New York - New precision internal gears from Sterling Instrument (an ISO 9001 manufacturer) are available from stock in inch and metric sizes. These 20° pressure angle inch gears, identified as the S1E62Z- Series, are offered in 303 Stainless Steel or 2024-T4 Anodized Aluminum. The metric gears, identified as the S1E05ZM, S1E08ZM and S1E10ZM Series, are supplied in 303 Stainless Steel.

The metric gears in Modules 0.5, 0.8, & 1 are ISO Class 7 and are stocked in 5, 8 & 10 mm face widths. They have from 60 to 120 teeth and O.D.'s ranging from 50 mm to 150 mm. The Inch gears are stocked in 24, 32, 48, 64, 72 and 96 Pitch. They are AGMA Q10 with a 1/8" face width. They have from 20 to 300 teeth and O.D.'s ranging from 1.998" up to 3.998".

Detailed specifications are contained in SI Catalogs 785 (metric sizes) and SI Catalog 790 (inch sizes), both available free upon request from Sterling Instrument. These catalogs can be viewed now on the Web at:, or via mail request at: 2101 Jericho Turnpike, Box 5416, New Hyde Park, NY 11042-5416. Phone: 516-328-3300 o Fax: 516-326-8827. Web:

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