BC Precision Archive

Standard Diameter: 4″ / 4.00 Inches

Metric Diameter: 101.6mm

Grade: 100

Material: AISI 52100 Chromium Steel

Ball Weight (each): 9.45 Pounds / 4.286 Kilograms

Chrome steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications.

Standard Diameter: 7/16″ / .4375 Inches

Metric Diameter: 11.1125mm

Grade: 25

Material: AISI 52100 Chromium Steel

Ball Weight (each): .19778 Ounces / 5.607 Grams

Chrome steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications.

Standard Diameter: 7/16″ / .4375 Inches

Metric Diameter: 11.1125mm

Grade: 500

Material: AISI 1015 Carbon Steel

Ball Weight (each): .200 Ounces / 5.6726 Grams

Carbon steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications. AISI 1015 is a low-carbon steel that offers superior workability and machinability. A versatile engineering and machinery alloy, AISI 1015 is used normalized, hot-rolled, cold-worked or annealed.

Standard Diameter: 17/64″ / .2656 Inches

Metric Diameter: 6.747mm

Grade: 25

Material: AISI 52100 Chromium Steel

Ball Weight (each): .0441 Ounces / 1.25 Grams

Chrome steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications.

• Standard Diameter: 1″ / 1.00 Inches
• Metric Diameter: 25.4mm
• Grade: 25
• Material: AISI 52100 Chromium Steel
• Ball Weight (each): 2.3617 Ounces / 66.953 Grams

Chrome steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications.

Standard Diameter: 9/64″ / .140625 Inches

Metric Diameter: 3.5719mm

Grade: 25

Material: AISI 52100 Chromium Steel

Ball Weight (each): .00602 Ounces / 0.19 Grams

Chrome steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications.

• Standard Diameter: 1″ / 1.00 Inches
• Metric Diameter: 25.4mm
• Grade: 1
• Material: Delrin Plastic
• Ball Weight (each): .406 Ounces / 11.51 Grams

Delrin (Polyoxy-Methylene), also known as Acetal, Polyacetal, and POM, is an engineering thermoplastic commonly used for precision parts that require high strength, hardness and rigidity. It is a tough material with a low coefficient of friction and high abrasion resistance. It has good electrical and dielectric properties, low water absorption and is FDA approved. Naturally white in color it does accept opaque colors well and can be polished to a shine. Delrin is typically difficult to bond but can be bonded with epoxies, polyurethanes and cyanoacrylates (superglue). It has good chemical resistance but is sensitive to mineral acids, chlorine, and alkaline degradation. Common uses include; pump parts, valve bodies, and bearings.

Standard Diameter: 3/8″ / .375 Inches

Metric Diameter: 9.525mm

Grade: 25

Material: AISI 52100 Chromium Steel

Ball Weight (each): .125 Ounces / 3.531 Grams

Chrome steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications.

Standard Diameter: 5/8″ / .625 Inches

Metric Diameter: 15.875mm

Grade: 500

Material: AISI 1015 Carbon Steel

Ball Weight (each): .57659 Ounces / 16.346 Grams

Carbon steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications. AISI 1015 is a low-carbon steel that offers superior workability and machinability. A versatile engineering and machinery alloy, AISI 1015 is used normalized, hot-rolled, cold-worked or annealed.

Standard Diameter: .4724 Inches

Metric Diameter: 12mm

Grade: 25

Material: AISI 52100 Chromium Steel

Ball Weight (each): .2502 Ounces / 7.092 Grams

Chrome steel balls offer the precise geometry and fine surface finish that makes them especially useful for bicycles, casters, drawer slides, door locks and many other applications.