Bearing Ball 30.162 mm - Spherical Rolling Element for Ball Bearings

Product Characteristics - Bearing Ball 30.162 mm

The 30.162 mm bearing ball is an individual spherical rolling element designed to transmit loads through contact with appropriately shaped raceways.

In a complete ball bearing, rolling elements operate between the inner and outer ring raceways, enabling relative rotational movement and transmitting loads through rolling contact.

The nominal diameter of 30.162 mm identifies the size of the element but does not define its manufacturing accuracy.

Other important technical characteristics include diameter tolerance, sphericity, surface finish, material properties and compatibility with the intended mechanical assembly.

Selection based solely on nominal diameter may be insufficient, particularly in bearings operating under significant loads or requiring precise shaft guidance.

Technical Specifications

The available product information does not establish the material grade, precision grade, hardness or dimensional tolerance.

These characteristics must not be assigned without documentation for the exact product.

What Does Bearing Ball 30.162 mm Mean?

Bearing Ball identifies a spherical rolling element intended for use in suitably designed bearings and mechanical assemblies.

30.162 mm specifies the nominal diameter in metric units.

The designation does not identify a manufacturer, precision grade, steel composition or special manufacturing specification.

Unlike a complete rolling bearing, an individual bearing ball has no inner or outer ring, cage, sealing arrangement or internal clearance classification.

Complete technical identification requires additional information about material properties, dimensional accuracy and surface quality.

Bearing Ball 30.162 mm vs 1 3/16 Inch Bearing Ball

The specified metric diameter is very close to the imperial dimension of 1 3/16 inches.

The difference is 0.5 micrometers.

However, it cannot be established whether the designation 30.162 mm represents an intentionally specified metric diameter or a shortened conversion of the imperial dimension.

For precision rolling elements, the manufacturer's dimensional tolerances and original specification determine whether the two designations are interchangeable.

The dimensions should not automatically be treated as technically identical.

Construction and Operating Principle

The 30.162 mm bearing ball has a spherical working surface that interacts with a suitably designed raceway or guiding surface.

In a complete ball bearing, rolling elements enable relative rotation between the bearing rings.

Depending on the bearing design, the balls may transmit radial, axial or combined loads.

Operating performance depends on:

• Actual diameter and permitted dimensional deviations.

• Sphericity and geometrical accuracy.

• Material hardness and mechanical properties.

• Surface finish and surface integrity.

• Geometry of the mating raceways.

• Lubrication conditions.

• Magnitude and direction of applied loads.

An incorrectly selected rolling element may cause uneven load distribution, increased contact stresses and premature wear of the bearing assembly.

Bearing Ball Precision Grades

Manufacturing accuracy is an important factor when selecting bearing balls for precision mechanical assemblies.

ISO 3290-1:2014 specifies requirements for finished steel balls used in rolling bearings, including dimensional accuracy, geometrical deviations and surface quality.

Bearing ball precision grades are commonly identified by the letter G followed by a number, such as G10, G20, G40 or G100.

In general, lower grade numbers indicate tighter geometrical tolerances.

However, the designation "bearing ball" alone does not establish compliance with any particular precision grade.

No precision grade has been confirmed for this 30.162 mm bearing ball.

The material and hardness have also not been verified. Therefore, the product must not automatically be identified as 100Cr6, AISI 52100 or stainless steel.

Alternative Designations and Reference Formats

The product may be identified using the following natural designation formats:

• Bearing Ball 30.162 mm

• 30.162 mm Bearing Ball

• Ball Bearing Rolling Element 30.162 mm

• Spherical Bearing Ball 30.162 mm

• Bearing Ball Diameter 30.162 mm

The imperial dimension 1 3/16 inches may be used as an approximate dimensional reference, but it has not been confirmed as the manufacturer's official designation for this product.

No verified OEM numbers, manufacturer references or direct replacements have been established.

Bearing Ball Selection and Interchangeability

Before purchasing a 30.162 mm bearing ball, verify the exact dimensional requirements of the intended mechanical assembly.

Important selection criteria include:

• Nominal diameter: 30.162 mm.

• Diameter tolerance: Permitted deviation from the specified diameter.

• Precision grade: Required dimensional and geometrical accuracy.

• Material: Steel grade or another specified material.

• Hardness: Compatibility with the intended contact loads.

• Surface quality: Roughness, defects and surface condition.

• Operating conditions: Load, speed, temperature and lubrication.

• Assembly compatibility: Raceway geometry and original equipment requirements.

When replacing a rolling element in an existing bearing, all relevant characteristics must be compatible with the original specification.

Replacing a single ball without inspecting the remaining rolling elements and raceways can cause uneven loading.

In conventional complete ball bearings, replacing the entire bearing is often the more appropriate maintenance solution.

Matching nominal diameters do not guarantee complete interchangeability.

Applications of Bearing Ball 30.162 mm

A bearing ball with a nominal diameter of 30.162 mm may be used as a rolling element in suitably engineered ball bearings or other mechanical systems requiring spherical rolling contact.

Its suitability depends on the design requirements, operating loads, dimensional tolerances and confirmed material properties.

No specific bearing model, machine, vehicle or OEM application has been verified for this exact product.

Compatibility must therefore be established using the original equipment specification rather than nominal diameter alone.

Handling, Installation and Storage

The spherical working surface should be protected against scratches, impacts and contamination.

Before installation, inspect the ball for visible damage, corrosion or surface defects.

Do not install rolling elements with unverified dimensional or material compatibility in precision bearing assemblies.

Installation should follow the technical requirements of the mechanical system.

Store bearing balls in a clean, dry environment, protected from moisture, mechanical damage and contamination.

Frequently Asked Questions - FAQ

What is the diameter of Bearing Ball 30.162 mm?

The nominal diameter is 30.162 mm. Actual dimensional deviations depend on the manufacturer's specified tolerances.

Is a 30.162 mm bearing ball equivalent to a 1 3/16 inch ball?

The dimensions are very close but not exactly identical. The exact conversion of 1 3/16 inches is 30.1625 mm, giving a nominal difference of 0.0005 mm.

What material is the bearing ball made from?

The material grade has not been specified. It cannot be confirmed whether the ball is manufactured from 100Cr6 bearing steel, stainless steel or another material.

What precision grade does the 30.162 mm bearing ball have?

The precision grade has not been provided. Manufacturer documentation is required to confirm the applicable grade and tolerances.

Can this ball be used in any bearing with rolling elements of the same diameter?

No. In addition to diameter, material, hardness, precision grade, sphericity and bearing design requirements must be considered.

Can a single bearing ball be replaced in an existing bearing?

Replacing individual balls is generally not a standard repair procedure for conventional complete rolling bearings. Replacing the entire bearing is often preferable.

Is the 30.162 mm bearing ball corrosion-resistant?

Corrosion resistance cannot be confirmed without knowing the material grade and any applicable surface treatment.

Are bearing balls with identical nominal diameters interchangeable?

Not necessarily. Differences in dimensional tolerances, precision grade, hardness, material and surface quality can affect bearing performance and service life.

Bearing Ball 30.162 mm - Key Technical Information

Bearing Ball 30.162 mm is an individual spherical rolling element with a nominal diameter of 30.162 mm, close to 1 3/16 inches. The manufacturer, material and precision grade are unspecified. Correct selection requires verification of diameter tolerance, sphericity, hardness and compatibility with the intended bearing or mechanical assembly.

Bearing Balls at simmering.pl

Bearing balls and other industrial components are available through simmering.pl, a specialist supplier of rolling bearings, industrial seals and mechanical components.

We serve industrial customers, maintenance departments, workshops and technical purchasing teams.

Our warehouse and order processing facilities are located in Lublin, Poland. We provide worldwide shipping from stock in Poland.

Technical assistance is available for product identification and selection based on dimensions and application requirements.