SNR CUS206G2 30x62x30 - Insert Ball Bearing

SNR CUS206G2 30x62x30 mm - Insert Ball Bearing with Cylindrical Outer Ring

SNR CUS206G2 is a single-row insert ball bearing manufactured under the SNR brand of the NTN Group, with dimensions of 30x62x30 mm. This CUS200-series bearing insert features a cylindrical outer ring and an extended inner ring designed for shaft locking using set screws. The G2 designation identifies a specific manufacturer version. CUS206G2 differs in construction from UC206G2 and CUC206 bearing inserts, so mounting seat compatibility must be verified before installation.

Technical Specifications - SNR CUS206G2

The dimensions 30x62x30 mm refer to the bore diameter, outside diameter and inner ring width, respectively.

The outer ring width is 16 mm.

Parameters such as the basic dynamic load rating, basic static load rating, weight, limiting speed, internal clearance and lubricant specification require confirmation in the manufacturer's documentation for the exact CUS206G2 version.

These values must not be transferred from CUC206 or UC206G2.

What Does SNR CUS206G2 Mean?

CUS - Bearing Insert Series with Cylindrical Outer Ring

CUS identifies an SNR series of insert ball bearings with cylindrical outer ring surfaces.

Bearings in this series are intended for installation in appropriately designed mounting seats.

Unlike the UC series, they do not use a spherical outer ring surface to provide self-alignment within a conventional bearing housing.

206 - Bearing Size

The number 206 identifies the bearing dimensional size.

For CUS206G2, the principal dimensions are:

• Bore diameter: 30 mm.

• Outside diameter: 62 mm.

• Inner ring width: 30 mm.

• Outer ring width: 16 mm.

G2 - SNR Manufacturer Version

G2 forms part of the manufacturer's complete bearing designation.

It must not automatically be interpreted as C3 internal clearance, a special lubricant, a particular precision class or a specific cage material.

The complete designation CUS206G2 should always be retained when identifying or ordering this bearing.

SNR - NTN Group Brand

SNR is a brand within the NTN Group, a manufacturer of rolling bearings, bearing inserts, bearing housings and complete mounted bearing units.

Alternative Designations and Reference Numbers

Natural written variations of the product designation include:

• SNR CUS206G2

• CUS206G2 SNR

• CUS 206 G2 SNR

• SNR CUS 206 G2

• NTN-SNR CUS206G2

• CUS206G2 30x62x30 mm

• CUS206G2 insert bearing

• CUS206G2 cylindrical outer ring bearing

These are alternative written forms of the same designation, not confirmed interchangeable part numbers.

CUC206, UC206G2 and standard 6206 bearings must not be treated as direct replacements without checking their construction and mounting dimensions.

Construction and Operating Principle of SNR CUS206G2

Single-Row Ball Bearing Construction

CUS206G2 is a single-row insert ball bearing.

The rolling elements operate between the raceways of the inner and outer rings, allowing the shaft to rotate relative to the stationary mounting seat.

The construction is primarily intended to support radial loads and suitable axial loads within the limits established by the manufacturer and the mounting conditions.

Cylindrical Outer Ring

The outer ring has a diameter of 62 mm and a width of 16 mm.

Its outside surface is cylindrical.

This is the fundamental difference compared with the UC206G2 bearing insert, which has a spherical outer ring.

CUS206G2 requires a mounting seat compatible with its cylindrical outer ring surface.

It must not be assumed that the bearing can be installed directly into a standard housing designed for UC206G2.

Extended Inner Ring

The inner ring has a width of 30 mm, while the outer ring width is 16 mm.

This construction provides space for the components used to secure the bearing to the shaft.

The bore diameter is 30 mm.

Shaft Locking Arrangement

CUS206G2 uses set screws for shaft locking.

The screws secure the inner ring to the shaft surface, helping prevent relative rotation between the shaft and bearing inner ring.

Before installation, inspect the shaft surface and verify the required shaft fit.

Do not apply a tightening torque specified for another bearing model without confirming that it is suitable for CUS206G2.

Sealing and Lubrication

Insert ball bearings may incorporate sealing arrangements designed to protect the rolling elements against contamination.

The exact sealing configuration, lubricant type and relubrication requirements must be confirmed for the specific CUS206G2 version.

Sealing and lubrication specifications used for other SNR bearing series must not automatically be assigned to this product.

SNR CUS206G2 vs Other Bearing Versions

CUS206G2 vs SNR CUC206

Both bearing inserts have a bore diameter of 30 mm, an outside diameter of 62 mm and a cylindrical outer ring surface.

However, their axial dimensions are different.

CUS206G2 and CUC206 are not automatically interchangeable.

Differences in ring widths may affect the bearing position within the mounting seat, axial retention and the location of shaft locking components.

CUS206G2 vs SNR UC206G2

The most important difference concerns the outer ring geometry.

CUS206G2 is intended for a suitable cylindrical mounting seat, whereas UC206G2 is designed for a compatible spherical housing seat.

Their axial dimensions are also different.

CUS206G2 vs 6206

A standard 6206 deep groove ball bearing has dimensions of 30x62x16 mm.

CUS206G2 has the same bore and outside diameters and an outer ring width of 16 mm, but its inner ring has a width of 30 mm.

In addition, CUS206G2 incorporates set screw shaft locking.

These bearings must not be considered directly interchangeable.

Selection and Interchangeability of SNR CUS206G2

Before purchasing, verify the following:

1. Complete designation CUS206G2.

2. Manufacturer SNR, if required by the machine documentation.

3. Shaft diameter of 30 mm.

4. Outside diameter of 62 mm.

5. Inner ring width of 30 mm.

6. Outer ring width of 16 mm.

7. Cylindrical outer ring surface.

8. Mounting seat geometry.

9. Axial retention arrangement.

10. Type and position of set screws.

11. Required internal clearance.

12. Sealing arrangement.

13. Radial and axial operating loads.

14. Rotational speed.

15. Operating temperature.

16. Lubrication conditions.

Can CUS206G2 Be Replaced by a Bearing from Another Manufacturer?

An equivalent bearing from another manufacturer may be considered only after dimensional and construction compatibility has been verified.

In addition to the 30 mm bore and 62 mm outside diameter, the widths of both rings, shaft locking method, outer ring geometry and operating requirements must be compared.

Identical principal diameters do not guarantee interchangeability.

Applications of SNR CUS206G2

CUS206G2 is intended for mechanical arrangements requiring a ball bearing insert with a cylindrical outer ring and shaft locking capability.

Typical application areas for this type of bearing construction include:

• Roller and shaft assemblies.

• Material handling mechanisms.

• Production machinery.

• Industrial equipment with suitable bearing mounting seats.

• Compact shaft support units.

• Mechanical assemblies requiring an extended inner ring with set screw locking.

These are typical applications based on the bearing construction, not a verified list of specific machines or OEM part numbers.

Installation and Operating Recommendations

Shaft Preparation

The shaft should have a nominal diameter of 30 mm and the appropriate fit.

Before installation, remove dirt, burrs and corrosion.

Installation in the Mounting Seat

CUS206G2 has a cylindrical outer ring surface.

The mounting seat must be compatible with this geometry and the outer ring dimensions.

During installation, apply mounting force to the ring being fitted, avoiding the transmission of force through the rolling elements.

Shaft Locking

Tighten the set screws according to the manufacturer's instructions for the specific bearing version.

After installation, verify that the bearing is correctly positioned and securely fixed to the shaft.

Lubrication and Inspection

Lubrication requirements should be determined from the manufacturer's documentation and actual operating conditions.

During service, inspect bearing temperature, noise, vibration, shaft locking stability and signs of wear.

Storage

Store the bearing in a clean, dry environment, preferably in its original packaging.

Protect the mounting surfaces and internal components against mechanical damage and moisture.

Frequently Asked Questions - SNR CUS206G2

What Are the Dimensions of SNR CUS206G2?

CUS206G2 has principal dimensions of 30x62x30 mm. The bore diameter is 30 mm, the outside diameter is 62 mm and the inner ring width is 30 mm. The outer ring width is 16 mm.

What Does G2 Mean in CUS206G2?

G2 is an SNR manufacturer version designation. It must not automatically be interpreted as C3 internal clearance, a special lubricant or a particular precision class.

Is CUS206G2 a Self-Aligning Bearing?

CUS206G2 is an insert ball bearing with a cylindrical outer ring surface. It does not provide the self-aligning capability associated with a spherical outer ring operating in a matching housing.

What Is the Difference Between CUS206G2 and CUC206?

CUS206G2 has an inner ring width of 30 mm and an outer ring width of 16 mm. CUC206 has corresponding widths of 38.1 mm and 19 mm. Both have bore and outside diameters of 30 mm and 62 mm, but they are not automatically interchangeable.

How Is CUS206G2 Secured to the Shaft?

The bearing insert is secured to a 30 mm shaft using set screws. The tightening torque must be confirmed in the manufacturer's documentation for the exact version.

Can CUS206G2 Replace a 6206 Bearing?

It is not a direct replacement. A standard 6206 bearing measures 30x62x16 mm, whereas CUS206G2 has an extended inner ring with a width of 30 mm and set screw shaft locking.

Can CUS206G2 Be Installed in a UCP206 Housing?

This should not be assumed. A standard UCP206 housing is designed for a bearing insert with a spherical outer ring surface, while CUS206G2 has a cylindrical outer ring.

SNR CUS206G2 - Key Technical Information

SNR CUS206G2 is a single-row insert ball bearing manufactured under the SNR brand of the NTN Group, with dimensions of 30x62x30 mm. It belongs to the CUS200 series and features a cylindrical outer ring with a width of 16 mm and an extended inner ring with set screw shaft locking. G2 identifies the manufacturer's version. The bearing requires a compatible cylindrical mounting seat.

SNR CUS206G2 at simmering.pl

SNR CUS206G2 is offered by simmering.pl, a specialist supplier of rolling bearings, insert ball bearings, bearing housings and complete mounted bearing units.

We serve machinery manufacturers, industrial maintenance departments, mechanical repair workshops and B2B purchasing teams.

Our warehouse and order processing operations are located in Lublin, Poland. We supply customers throughout Europe and offer worldwide shipping.

We also assist customers in identifying bearing designations and selecting the correct bearing version.