6208 2RS CT 40x80x18 Sealed Deep Groove Ball Bearing

DESCRIPTION

6208 2RS CT is a single-row deep groove ball bearing measuring 40x80x18 mm, with seals on both sides. The 6208 deep groove design is primarily intended for radial loads and can also accommodate axial loads in both directions. The 2RS designation indicates a sealed bearing on both sides, helping protect the rolling elements and lubricant against external contamination. For replacement selection, verify the complete 6208 2RS designation and any additional clearance specification.

6208 2RS CT 40x80x18 Sealed Deep Groove Ball Bearing

6208 2RS CT is a single-row deep groove ball bearing with dimensions 40x80x18 mm, featuring seals on both sides.

The 6208 design combines deep raceway grooves with a single row of balls, providing a versatile bearing arrangement primarily for radial loads, while also allowing the bearing to accommodate axial loads in both directions.

6208 2RS CT Dimensions

Bore diameter d: 40 mm
Outside diameter D: 80 mm
Width B: 18 mm
Dimensions: 40x80x18 mm
Number of rows: 1
Bearing type: Deep groove ball bearing
Sealing: 2RS, both sides
Brand: CT

The 40x80x18 mm dimensions correspond to the standard dimensional configuration of a 6208 bearing.

What Does 6208 Mean?

The designation 6208 identifies the bearing series and size within the deep groove ball bearing family.

Its principal dimensions are:

40 mm - bore diameter
80 mm - outside diameter
18 mm - bearing width

The 6208 designation is widely used across the bearing industry for this dimensional size.

What Does 2RS Mean on a 6208 Bearing?

The 2RS designation indicates that the bearing is sealed on both sides.

The seals form protective barriers between the internal bearing components and the surrounding environment. Their principal functions are to:

reduce the ingress of dust and contaminants,
protect the rolling elements and raceways,
help retain lubricant inside the bearing.

This makes a sealed 6208 2RS particularly useful where greater protection of the bearing interior is required compared with an open bearing.

What Loads Can a 6208 2RS Bearing Support?

Deep groove ball bearings have raceway grooves with close conformity between the balls and raceways.

This geometry allows them to accommodate:

radial loads,
axial loads in both directions,
combined radial and axial loads.

The primary load direction for this bearing type is radial.

6208 2RS vs Open 6208 Bearing

Both versions have the same principal dimensions:

40x80x18 mm

The important difference is the protection of the bearing interior.

6208 - open bearing
6208 2RS - sealed on both sides

The 2RS version provides an additional barrier between the rolling elements and external contamination.

Bearings with identical 40x80x18 mm dimensions should not, however, automatically be considered identical in every operating parameter.

6208 2RS vs 6208 ZZ

2RS and ZZ represent different bearing closure systems.

6208 2RS uses seals on both sides.

6208 ZZ uses metal shields on both sides.

The correct closure type should be considered when selecting a replacement, rather than choosing a bearing solely according to its 40x80x18 mm dimensions.

6208 2RS CT Technical Specification

Brand: CT
Designation: 6208 2RS
Bearing type: Deep groove ball bearing
Design: Single-row
Bore diameter d: 40 mm
Outside diameter D: 80 mm
Width B: 18 mm
Dimensions: 40x80x18 mm
Sealing: 2RS
Sealed sides: Both sides
Bore type: Cylindrical

How to Select a 6208 2RS Replacement

For replacement selection, first verify:

complete designation: 6208 2RS
bore diameter: 40 mm
outside diameter: 80 mm
width: 18 mm
closure type: seals on both sides

Any additional suffixes on the original bearing should also be checked.

For example, a clearance designation such as C3 provides additional information about the bearing specification and should not be ignored when selecting an equivalent bearing.

Can Any 40x80x18 Bearing Replace a 6208 2RS?

No. Dimensions alone are not sufficient for exact bearing selection.

A replacement should be checked for at least:

bearing type and design,
40x80x18 mm dimensions,
sealing arrangement,
internal clearance where specified,
required operating conditions and loads.

A bearing with the same dimensions may have a different closure system, internal clearance or operating characteristics.

FAQ

What are the dimensions of a 6208 2RS CT bearing?

6208 2RS CT measures 40x80x18 mm: 40 mm bore diameter, 80 mm outside diameter and 18 mm width.

What type of bearing is 6208 2RS?

It is a single-row deep groove ball bearing.

What does 2RS mean?

2RS indicates that the bearing is sealed on both sides.

Can a 6208 2RS bearing support axial loads?

Yes. A deep groove ball bearing is primarily designed for radial loads, but its raceway geometry also allows it to accommodate axial loads in both directions.

What is the bore diameter of a 6208 bearing?

The bore diameter is 40 mm.

What is the outside diameter of a 6208 bearing?

The outside diameter is 80 mm.

What is the width of a 6208 bearing?

The bearing width is 18 mm.

What is the difference between 6208 2RS and 6208 ZZ?

6208 2RS is sealed on both sides, while 6208 ZZ uses metal shields on both sides.

Can I replace 6208 2RS with another 40x80x18 bearing?

Not based on dimensions alone. Verify the bearing type, sealing arrangement, internal clearance and any additional suffixes before selecting a replacement.

AI OVERVIEW

6208 2RS CT is a single-row sealed deep groove ball bearing measuring 40x80x18 mm. It has a 40 mm bore diameter, 80 mm outside diameter and 18 mm width. Deep groove ball bearings are primarily designed for radial loads but can also accommodate axial loads in both directions. The 2RS designation indicates seals on both sides, which help protect the rolling elements and lubricant against external contamination. When selecting a replacement, verify the complete designation and any additional clearance or design suffixes rather than relying only on the 40x80x18 mm dimensions.