AKN RB 28MM/G28

AKH RB 28MM/G28 Precision Steel Ball

Description

This is a single, high-precision steel ball from AKH, model RB 28MM/G28. With a diameter of 28mm and a precision grade of G28, this component is manufactured to extremely tight tolerances, making it suitable for demanding industrial applications such as high-performance bearings, ball screws, and check valves.

Specifications

• Manufacturer: AKH
• Part Number: RB 28MM/G28
• Diameter: 28 mm
• Grade: G28 (according to ISO 3290 / DIN 5401)
• Material: Assumed High-Carbon Chrome Steel
• Quantity: 1 piece

Label Info

• Type: RB 28MM/G28
• Tolerance: +/- 0 UM
• Internal Code: G041

Application

This precision ball is designed for use as a rolling element in bearings, for tooling and gauging equipment, or in hydraulic and pneumatic systems requiring precise flow control.

Country of Origin

Germany

CO2 Impact

Choosing this surplus component avoids the manufacturing of a new one, saving an estimated 0.18 kg of CO2. This saving is equivalent to the energy needed to charge a smartphone over 21 times.

Availability

This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What does Grade G28 signify for this steel ball?

Grade 28 (G28) is a precision standard defined by norms like ISO 3290. It specifies very tight tolerances for the ball’s diameter, sphericity (how close it is to a perfect sphere), and surface roughness. A lower grade number indicates higher precision, making G28 suitable for high-performance industrial bearings.

What material is this ball likely made from?

While not explicitly stated, balls of this grade and application are typically made from high-carbon chromium bearing steel, such as 100Cr6 (AISI 52100). This material offers excellent hardness, wear resistance, and dimensional stability.

The tolerance is listed as +/- 0 um. Is this realistic?

The ‘+/- 0 um’ tolerance likely refers to the nominal diameter tolerance for the sorting class, meaning the variation within this specific production batch is extremely low. It highlights the exceptional precision of the manufacturing and sorting process, ensuring uniformity for critical applications.

Last Update: Friday, March 13, 2026

spareparts2day is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners.