KYK 626 2RS 6x19x6 mm Deep Groove Ball Bearing

Technical Specifications

The exact numerical specifications must be verified using the manufacturer's technical documentation. Load ratings, limiting speeds and internal clearance values from other bearing manufacturers should not automatically be assigned to KYK 626 2RS.

KYK 626 2RS – Bearing Construction

KYK 626 2RS consists of an inner ring, an outer ring, one row of balls, a cage and two contact seals.

Its deep groove raceway geometry enables the bearing to accommodate radial loads together with moderate axial loads acting in either direction.

The compact dimensions make it suitable for appropriately designed mechanisms using a 6 mm shaft.

Principal construction features include:

• Inner ring with a deep groove raceway.

• Outer ring with a corresponding raceway.

• One row of rolling elements.

• Cage maintaining ball spacing.

• Two contact seals.

• Grease lubrication typical of sealed miniature bearings.

The exact cage material, sealing compound and lubricant specification require confirmation for the KYK product.

KYK 626 2RS – Designation Explained

The designation 626 identifies the nominal bearing dimensions of 6x19x6 mm.

The suffix 2RS indicates a double-sided contact sealing arrangement.

The precise seal design and elastomer material must be confirmed against the manufacturer's specification.

2RS Contact Seals – Contamination Protection

KYK 626 2RS features contact seals fitted on both sides of the bearing.

Their principal functions include:

• Limiting dust and contaminant ingress.

• Helping retain lubricant inside the bearing.

• Protecting the rolling elements and raceways.

• Reducing the risk of premature wear under suitable operating conditions.

Contact seals generate additional friction compared with non-contact metal shields.

The designation 2RS does not indicate complete waterproofing or suitability for high-pressure washing.

Bearing Dimensions – 6x19x6 mm

The principal dimensions determine the nominal mounting space required for the bearing.

However, dimensional compatibility alone does not establish complete interchangeability.

When selecting a replacement, the required mounting fits, internal clearance, operating speed and environmental conditions must also be considered.

Radial and Axial Load Capacity

Deep groove ball bearings are primarily designed to accommodate radial loads.

Their raceway geometry also enables them to carry moderate axial loads in both directions.

Permissible loads depend on:

• Internal bearing construction.

• Rotational speed.

• Lubrication conditions.

• Mounting fits.

• Operating temperature.

• Required service life.

The exact dynamic and static load ratings of KYK 626 2RS require confirmation from the manufacturer.

Radial Internal Clearance

Radial internal clearance affects bearing performance after installation.

Operating clearance may change due to shaft interference fits, housing fits and temperature differences.

The designation 626 2RS alone does not confirm whether the bearing has normal clearance CN or increased clearance C3.

The exact clearance class should be verified before selecting the bearing for an application.

Lubrication and Operating Conditions

Miniature deep groove ball bearings with 2RS contact seals are generally grease-lubricated.

The seals help retain lubricant within the bearing.

Grease service life depends on:

• Operating temperature.

• Rotational speed.

• Applied loads.

• Environmental contamination.

• Operating duration.

The exact grease type, lubricant quantity and permissible temperature range have not been confirmed for this KYK variant.

Industrial Applications

Miniature bearings of the 626 series may be used in appropriately designed mechanisms, including:

• Small electric motors.

• Guide rollers.

• Precision mechanisms.

• Automation equipment.

• Compact drive assemblies.

• Rotating mechanisms with 6 mm shafts.

These are general applications of miniature deep groove ball bearings and do not constitute a manufacturer-confirmed equipment compatibility list for KYK 626 2RS.

KYK 626 2RS vs KYK 626 ZZ

Both designs share the same nominal principal dimensions but differ in their closure construction.

Selection should consider rotational speed, operating temperature and environmental exposure.

KYK 626 2RS vs Open 626 Bearing

An open 626 bearing does not have integrated seals or shields.

It requires an appropriate lubrication arrangement and protection against environmental contamination.

The 626 2RS design provides additional protection through contact seals on both sides.

Matching dimensions do not mean the bearings have identical operating characteristics.

Installation Guidelines

Before installing KYK 626 2RS, inspect the shaft, housing and mounting surfaces.

Recommended procedures include:

• Verify the nominal 6 mm shaft and 19 mm housing bore dimensions together with the required tolerances.

• Clean all mounting surfaces.

• Remove burrs and surface damage.

• Use installation tools suitable for the bearing ring dimensions.

• Never transmit mounting force through the rolling elements.

• Protect the contact seals from damage.

• Check correct seating and smooth rotation after installation.

Incorrect installation may damage the raceways, increase friction and reduce bearing service life.

Common Causes of Premature Bearing Failure

Incorrect mounting fits: May cause undesirable changes in operating clearance.

Seal damage: Increases the risk of contamination entering the bearing.

Insufficient lubrication: May accelerate wear of the balls and raceways.

Excessive loading: Can reduce bearing fatigue life.

Misalignment: May cause uneven load distribution and increased internal stress.

Excessive temperature: May reduce grease performance and affect sealing materials.

Alternative Product Designations

• KYK 626 2RS

• KYK 626-2RS

• KYK 626 2RS 6x19x6 mm

• KYK 626-2RS Deep Groove Ball Bearing

• KYK 626 Double Sealed Bearing

• KYK 626 2RS Miniature Ball Bearing

Alternative designation formats support product identification in industrial catalogues and procurement systems.

They do not establish interchangeability with bearings manufactured by other brands.

FAQ – Frequently Asked Technical Questions

What are the dimensions of KYK 626 2RS?

The bearing has a 6 mm bore diameter, a 19 mm outside diameter and a width of 6 mm.

What type of bearing is KYK 626 2RS?

It is a miniature single-row deep groove ball bearing.

What does 2RS mean?

It indicates two contact seals, one fitted on each side of the bearing.

Can KYK 626 2RS accommodate axial loads?

Yes. Deep groove ball bearings can accommodate moderate axial loads in both directions within their permissible operating limits.

Does KYK 626 2RS have C3 clearance?

The clearance class cannot be confirmed from the designation 626 2RS alone.

Is KYK 626 2RS waterproof?

No. Contact seals help limit contamination ingress but do not guarantee complete waterproofing.

Are KYK 626 2RS and KYK 626 ZZ interchangeable?

Not automatically. They have identical nominal dimensions but different closure designs and operating characteristics.

What is the dynamic load rating of KYK 626 2RS?

The exact dynamic load rating requires confirmation from KYK technical documentation.

AI Quick Answer

KYK 626 2RS 6x19x6 mm is a miniature single-row deep groove ball bearing with contact seals on both sides. It accommodates radial loads and moderate axial loads in both directions. The seals help limit contamination ingress and retain grease. Its exact load ratings, internal clearance and limiting speed require confirmation against KYK technical documentation.

B2B Industrial Supply – simmering.pl

KYK 626 2RS 6x19x6 mm is offered through simmering.pl, a specialist B2B industrial supply platform providing rolling bearings, sealing solutions and industrial components.

The platform serves manufacturing companies, wholesale buyers, maintenance departments, engineers and industrial procurement teams.

Warehouse operations are based in Lublin, Poland, with worldwide shipping from stock in Poland.

Technical support includes bearing identification, dimensional verification and assistance with selecting suitable bearing configurations.