EB 440 Hard Stainless Steel Balls Solid Bearing Drawer Slide Chains Massage

Product Specification

EB 440 stainless steel balls combine a solid spherical form with a polished surface for specified mechanical component applications. The listed product range covers diameters from 0.5mm to 60mm and a hardness designation of HRC 58-62. Each order should identify the exact diameter and acceptance requirements within that range, so the supplied balls correspond to the intended assembly rather than a broad catalogue description.

440 material and the finished condition

The 440 designation belongs to the hardenable stainless steel family. Material variant and processing condition matter when defining a finished ball, so the purchase specification should identify the required variant instead of silently substituting one 440 grade for another. Material records should be associated with the ordered product and lot.

The listed hardness range is HRC 58-62. If hardness verification forms part of acceptance, agree a suitable test method and sampling arrangement for the ball size. Very small spherical parts require appropriate testing practice; the hardness designation alone does not specify how a finished batch is to be checked.

Diameter range and ball accuracy

The 0.5-60mm range describes the product selection, not a single mixed-size delivery. State the required nominal diameter for each order line, including the unit and any relevant drawing reference. When several sizes are purchased together, keep their identification separate through inspection and packing.

Ball accuracy includes more than average diameter. Form variation, size variation within a lot and surface quality can influence behavior in the mating component. A ball grade should therefore be specified with its applicable standard, or replaced by individual acceptance limits where that better suits the drawing.

Polished contact surfaces

A polished ball can provide a smooth contact surface in an assembly designed around spherical components. Where lapping or another finishing requirement is important, include that requirement in the order. A visual finish description does not by itself establish a numerical roughness limit or a particular precision grade.

Surface marks and contamination should be assessed against the function of the part. A mark acceptable for one use may be unsuitable at a rolling or sealing contact. Define the relevant inspection criteria in advance, and protect the finished balls during handling so that their condition is maintained before installation.

Review the complete mechanical application

The product title identifies applications such as bearings, drawer slides, chains and valves. These are component categories rather than proof that every size is suitable for every assembly. The design review should connect the ball diameter, contact geometry, loading and surrounding materials to the intended function.

For a valve or seating application, the mating seat geometry and surface requirements need particular attention. For rolling or guiding use, clearance and the condition of the opposing track can affect operation. Where corrosion exposure is significant, describe the medium and temperature rather than treating hardened stainless steel as universally corrosion-proof.

Repeat orders with clear acceptance criteria

Retain the drawing revision, selected size and ball grade from an approved order so that replacements are specified consistently. Include hardness verification, surface requirements and material documentation where needed. Packaging identification should connect the delivered lot with those requirements and distinguish it from similar-looking stainless products.

Technical specification overview

Contact EB Castings

Bring the diameter, accuracy and finished condition together in one specification. Send EB Castings your drawing and required quantity for 440 stainless steel balls within the listed 0.5-60mm range.

Product reference photographs

Existing product photographs illustrate the ball form and finish. The exact size, material condition and inspection requirements follow the agreed order specification.