Steel Bearing Ball 4.500 mm - 100 pcs.

Technical Specifications - Steel Bearing Ball 4.500 mm

The nominal diameter of 4.500 mm does not establish the manufacturing tolerance or precision grade.

The exact steel grade, hardness, heat treatment and surface finish have not been confirmed for this product. These properties should be verified before installation in precision bearing assemblies.

What Does Steel Bearing Ball 4.500 mm - 100 pcs. Mean?

Steel Bearing Ball - Product Type

A steel bearing ball is a spherical rolling element used in ball bearings and suitably designed mechanical mechanisms.

In a conventional ball bearing, the balls operate between the inner and outer ring raceways, allowing relative rotational movement while transmitting mechanical loads.

A loose bearing ball is not a complete rolling bearing and does not include bearing rings, a cage, seals or shields.

4.500 mm - Nominal Diameter

The value 4.500 mm identifies the nominal diameter of the ball.

This is the primary dimensional specification used when selecting replacement rolling elements or designing mechanical assemblies.

However, the nominal diameter alone does not define the permitted manufacturing deviation.

For precision applications, the actual diameter tolerance and sphericity requirements must also be considered.

Steel - Material Identification

The product is identified as a steel bearing ball.

This does not automatically mean that it is manufactured from AISI 52100, 100Cr6 chrome bearing steel or stainless steel.

The exact steel grade, hardness and corrosion resistance require confirmation from the supplier.

100 pcs. - Package Quantity

Each package contains 100 individual steel bearing balls with a nominal diameter of 4.500 mm.

The package quantity is a commercial specification and does not define the material properties or precision grade.

Construction and Operating Principle

Spherical Geometry

The 4.500 mm steel ball can operate between appropriately shaped raceways or contact surfaces.

During operation, loads are transmitted through relatively small contact areas.

The geometry of the mating surfaces and the material properties influence contact stresses, friction and service life.

Rolling Contact

In a ball bearing, the balls roll along the raceways during relative rotation of the bearing rings.

Rolling contact reduces sliding friction under suitable operating conditions.

However, the resulting friction and wear depend on the complete bearing design, applied load, rotational speed and lubrication.

Surface Accuracy

Important characteristics of bearing balls include:

• Diameter accuracy.

• Deviation from spherical form.

• Surface roughness.

• Diameter consistency within a production batch.

• Material hardness.

• Absence of surface defects.

These properties cannot be determined from nominal diameter alone.

Material and Hardness

Steel bearing balls may be manufactured from different steel grades and subjected to specific heat treatments.

For this particular 4.500 mm product, the exact material and hardness have not been verified.

Therefore, no specific Rockwell hardness value or heat treatment specification is assigned.

Precision Grades of Steel Bearing Balls

Steel balls intended for rolling bearings may be classified according to ISO 3290-1.

The standard defines dimensional and geometric requirements for bearing balls.

Common precision grade designations include G10, G20, G40 and G100.

The precision grade influences permissible deviations in ball diameter, spherical form and surface characteristics.

The exact precision grade of Steel Bearing Ball 4.500 mm has not been confirmed.

It should not be described as G10, G20 or any other grade without supporting technical documentation.

A correct nominal diameter does not automatically guarantee suitability for a precision bearing.

Steel Bearing Ball 4.500 mm vs 3/16 Inch

The metric diameter of 4.500 mm is not equivalent to the imperial dimension 3/16 inch.

A 3/16 inch ball is 0.2625 mm larger than a 4.500 mm ball.

This difference is significant for bearing geometry and mechanical fit.

The two sizes should not be considered directly interchangeable.

Alternative Designations and Reference Sizes

The product may appear under the following notation variants:

• Steel Bearing Ball 4.500 mm

• 4.5 mm Steel Bearing Ball

• Steel Ball 4.5 mm

• Bearing Ball 4.500 mm - 100 pcs.

• 4.5 mm Steel Balls - 100 pcs.

• Steel Bearing Balls 4.500 mm Pack of 100

These are alternative descriptions of the same nominal metric size, not confirmed manufacturer cross-reference numbers.

No unverified OEM or manufacturer part numbers are assigned.

Selection and Interchangeability

Before purchasing steel bearing balls with a nominal diameter of 4.500 mm, verify:

1. Nominal ball diameter.

2. Permitted diameter tolerance.

3. Required precision grade.

4. Steel grade.

5. Material hardness.

6. Surface finish.

7. Operating load.

8. Operating speed.

9. Lubrication requirements.

10. Corrosion resistance requirements.

11. Compatibility with existing raceways.

12. Required quantity of rolling elements.

Identical nominal diameters do not guarantee complete interchangeability between bearing balls.

Differences in precision grade, material hardness and manufacturing tolerance may affect load distribution and wear.

Replacement of Balls in Existing Bearings

Replacing rolling elements in an existing bearing requires careful verification of the original bearing specifications.

Bearing manufacturers may use balls selected within narrow dimensional groups to achieve the required internal geometry and load distribution.

Installing balls with different actual diameters can result in uneven loading, increased vibration and premature wear.

The condition of the raceways and cage should also be assessed before replacing rolling elements.

Typical Applications

Steel bearing balls with a nominal diameter of 4.500 mm may be used in suitably designed mechanical assemblies, including:

• Ball bearings with replaceable rolling elements.

• Mechanical ball mechanisms.

• Positioning mechanisms.

• Ball detent mechanisms.

• Selected linear motion assemblies.

• Mechanical systems requiring spherical steel components.

These are typical applications of steel balls as a category of mechanical components.

They do not represent confirmed applications of this exact product in a particular bearing or machine model.

Suitability depends on the required material, precision grade, hardness, dimensional tolerance and operating conditions.

Installation, Handling and Storage

Cleanliness During Installation

Bearing balls should be handled in a clean environment.

Dust, metal particles and other contaminants may damage the rolling surfaces and accelerate wear.

Surface Protection

Do not use balls showing visible scratches, indentations or corrosion.

Surface defects may increase local contact stresses and reduce the service life of the assembly.

Dimensional Verification

For precision applications, verify the ball diameter using suitable calibrated measuring equipment.

The measurement procedure should correspond to the required tolerance.

Lubrication

When used as rolling elements, steel balls generally require lubrication suitable for the surrounding mechanism.

Lubricant selection should account for operating load, speed, temperature and material compatibility.

Storage

Store the balls in a clean, dry environment.

Protect them from moisture, contamination and mechanical damage.

Corrosion resistance should not be assumed unless the steel grade has been confirmed.

FAQ - Steel Bearing Ball 4.500 mm

1. What is the diameter of the steel bearing ball?

The nominal diameter is 4.500 mm.

2. How many balls are included in one package?

Each package contains 100 steel bearing balls.

3. Are these balls manufactured from AISI 52100 or 100Cr6 steel?

The exact steel grade has not been confirmed. These materials should not be assigned without manufacturer documentation.

4. Are the 4.5 mm steel balls hardened?

The heat treatment and hardness of this product have not been specified.

5. What precision grade do these bearing balls have?

The precision grade has not been confirmed. It cannot automatically be classified as G10, G20, G100 or another grade.

6. Are 4.500 mm balls interchangeable with 3/16 inch balls?

No. A 3/16 inch ball measures 4.7625 mm and is 0.2625 mm larger than a 4.500 mm ball.

7. Can these balls be used to repair a ball bearing?

Only if the diameter, tolerance, steel grade, hardness and precision grade meet the original bearing requirements.

8. Are these steel balls stainless?

Stainless steel construction has not been confirmed. The term steel does not automatically indicate corrosion resistance.

Steel Bearing Ball 4.500 mm - Key Technical Information

Steel Bearing Ball 4.500 mm - 100 pcs. is a package of 100 spherical steel rolling elements with a nominal diameter of 4.500 mm. These balls may be used in appropriately designed bearing assemblies and mechanical ball mechanisms. Correct selection requires verification of the steel grade, hardness, diameter tolerance and precision grade. The metric 4.500 mm size is not interchangeable with 3/16 inch.

Steel bearing balls are offered by simmering.pl, a specialist supplier of rolling bearings, industrial seals and mechanical components.

TG Ersatzteile Polska Sp. z o.o. operates a warehouse in Lublin, Poland, serving industrial companies, maintenance departments, workshops and international B2B customers.

Products are shipped from stock in Poland, with shipping options available throughout Europe and worldwide.