SKF 6005 2RS 25x47x12 Deep Groove Ball Bearing

What Is the SKF 6005 2RS Bearing?

SKF 6005 2RS is a single-row deep groove ball bearing with dimensions 25x47x12 mm, supplied in a sealed version with seals on both sides. SKF deep groove ball bearings are designed for low friction and high-speed operation. They accommodate primarily radial loads, but their raceway geometry also allows them to support axial loads in both directions. The sealed design helps retain lubricant inside the bearing and protects the rolling elements and raceways against contamination.

Technical Specifications

Manufacturer: SKF

Basic designation: 6005

Bearing type: Deep groove ball bearing

Design: Single row

Bore diameter d: 25 mm

Outside diameter D: 47 mm

Width B: 12 mm

Dimensions: 25x47x12 mm

Bore type: Cylindrical

Rolling elements: Balls

Number of rows: 1

Load direction: Radial and axial in both directions

Sealing: Both sides, depending on the exact SKF suffix

Lubrication: Grease lubricated in sealed versions

What Does 6005 Mean?

The designation 6005 identifies a deep groove ball bearing from the SKF 60 dimensional series.

Its principal dimensions are:

Inside diameter: 25 mm

Outside diameter: 47 mm

Width: 12 mm

These dimensions are standardized, but the complete SKF suffix should also be checked because bearings with the same 6005 basic designation may differ in sealing, internal clearance, cage design or lubricant specification.

What Does 2RS Mean?

2RS is a commonly used commercial designation for a bearing equipped with seals on both sides.

For SKF products, the exact manufacturer suffix should be verified. Depending on the specific bearing design and generation, SKF uses suffixes such as 2RSH or 2RS1 for sealed configurations.

Therefore, SKF 6005 2RS is a useful search and commercial description, but the complete designation marked on the original bearing should be checked when exact interchangeability is required.

Deep Groove Ball Bearing Design

Single-row deep groove ball bearings have deep, uninterrupted raceways with close conformity between the balls and raceway grooves.

This construction provides:

• Low friction
• High-speed capability
• Radial load capacity
• Axial load capacity in both directions
• Compact radial dimensions
• Simple bearing arrangement
• Low maintenance requirements in sealed versions

The bearing can therefore support combined loads when both radial and axial forces occur during operation.

Sealed Bearing Construction

The sealed version of the SKF 6005 incorporates sealing elements on both sides.

Their primary functions are to:

• Retain grease inside the bearing
• Protect the raceways and rolling elements
• Reduce the ingress of contaminants
• Support maintenance-free operation in suitable applications

The exact sealing characteristics depend on the specific SKF suffix and should be checked when contamination resistance or friction is critical.

Radial and Axial Loads

The SKF 6005 is primarily designed to carry radial loads. Because of the deep raceway geometry, it can also accommodate axial loads acting in either direction.

The actual permissible load depends on the exact bearing variant and operating conditions, including:

• Rotational speed
• Internal clearance
• Shaft and housing fits
• Operating temperature
• Lubrication
• Required service life

For engineering calculations, the catalogue values for the exact SKF designation should be used.

Internal Clearance

The designation 6005 or commercial description 6005 2RS does not automatically indicate increased internal clearance.

SKF uses additional suffixes to identify special clearance classes.

For example:

Normal clearance: generally no additional clearance suffix

C3: radial internal clearance greater than Normal

A C3 version should therefore not automatically be substituted for a Normal-clearance bearing without checking the requirements of the machine.

Lubrication

Sealed SKF deep groove ball bearings are supplied with grease inside the bearing.

The seals help retain the lubricant during operation and reduce the need for external relubrication in suitable applications.

The exact grease specification can depend on the complete SKF bearing designation. A specific grease type should therefore not be assigned to a bearing identified only as 6005 2RS.

Typical Applications

The 6005 25x47x12 mm bearing size can be used in suitable:

• Electric motors
• Pumps
• Fans and blowers
• Gearboxes
• Industrial machinery
• Agricultural machinery
• Conveyor equipment
• Mechanical drives
• Production equipment
• Workshop machinery
• Rotating mechanical assemblies

Final bearing selection should always consider load, speed, temperature, fit, internal clearance and environmental conditions.

Electric Motors and Industrial Drives

Deep groove ball bearings are widely used in electric motors because their design combines low friction, radial load capacity and high-speed capability.

When selecting SKF 6005 for an electric motor, the exact suffix is important. Internal clearance and lubricant specification may be selected specifically for the motor's temperature, speed and fit conditions.

The original bearing designation should therefore be reproduced whenever possible.

Selecting an SKF 6005 Replacement

When selecting a replacement, verify:

Basic designation: 6005

Dimensions: 25x47x12 mm

Bearing type: Single-row deep groove ball bearing

Sealing: Both sides

Exact SKF seal suffix: according to the original bearing

Internal clearance: Normal, C3 or another specified class

Lubrication: according to the exact bearing variant

Operating conditions: speed, load and temperature

Matching only the dimensions does not confirm complete technical interchangeability.

Installation Information

Before mounting the bearing, verify:

• Shaft diameter and tolerance
• Housing bore and tolerance
• Shaft surface condition
• Housing condition
• Required internal clearance
• Alignment
• Cleanliness of the mounting area

Mounting force should be applied only to the ring being installed with an interference fit. Installation forces should not be transmitted through the balls and raceways.

Frequently Asked Questions FAQ

What are the dimensions of SKF 6005?
The bearing has a 25 mm bore, 47 mm outside diameter and 12 mm width.

What type of bearing is SKF 6005?
It is a single-row deep groove ball bearing.

Can SKF 6005 carry axial loads?
Yes. Deep groove ball bearings can accommodate axial loads in both directions in addition to radial loads.

What does 2RS mean?
2RS is commonly used commercially for a bearing sealed on both sides. The exact SKF sealing suffix should be verified on the bearing or packaging.

Does SKF 6005 2RS automatically have C3 clearance?
No. C3 is a separate internal clearance designation and must be specified in the complete bearing designation.

Frequently Asked Questions from Engineers and Maintenance Technicians

Can any 6005 2RS bearing replace an SKF 6005 sealed bearing?
Not automatically. Dimensions may be identical while seal design, internal clearance, lubricant or other execution details differ.

Is SKF 6005 suitable for electric motors?
The 6005 size is used in suitable electric motor applications, but the exact bearing execution must correspond to the motor manufacturer's requirements.

Is a sealed 6005 bearing supplied lubricated?
Sealed deep groove ball bearings are normally supplied grease lubricated. The exact lubricant specification depends on the bearing variant.

Can a 6005 C3 replace a standard-clearance 6005?
Not automatically. C3 provides greater radial internal clearance than Normal and should be used only when required by the application.

Why should I check the complete SKF designation?
SKF suffixes can identify important characteristics such as sealing, internal clearance and lubricant specification. These details can affect operating temperature, speed capability and bearing service life.