NKE 2315 K C3 75x160x55 - Self-Aligning Ball Bearing

NKE 2315 K C3 75x160x55 mm - Double Row Self-Aligning Ball Bearing

NKE 2315 K C3 is a double row self-aligning ball bearing manufactured by NKE, with dimensions of 75x160x55 mm. It belongs to the 23 bearing series and features two rows of balls running against a common spherical outer ring raceway, allowing the bearing to accommodate angular misalignment between the shaft and housing. The suffix K specifies a tapered bore with a taper ratio of 1:12, while C3 indicates radial internal clearance greater than normal.

Technical Specifications - NKE 2315 K C3

Dynamic load rating C, static load rating C0, fatigue load limit Pu, limiting speed, mass and exact cage specifications are not included because these parameters have not been independently confirmed for the specific NKE execution.

What Does NKE 2315 K C3 Mean?

The designation identifies the bearing type, dimensional series, tapered bore and radial internal clearance.

NKE - Bearing Manufacturer

NKE is a manufacturer of rolling bearings for industrial applications.

When selecting a replacement bearing, the complete manufacturer designation is important because bearings with identical principal dimensions may differ in bore design, internal clearance and operating characteristics.

2315 - Bearing Series and Dimensions

The designation 2315 identifies a double row self-aligning ball bearing belonging to the 23 series.

The bore code 15 corresponds to a nominal bore diameter of 75 mm.

The principal dimensions are:

• Nominal bore diameter d: 75 mm.

• Outside diameter D: 160 mm.

• Width B: 55 mm.

The bearing contains two rows of balls and a common spherical outer ring raceway.

This construction allows the inner ring and rolling element assembly to align at a limited angle relative to the outer ring.

K - Tapered Bore with a 1:12 Taper Ratio

The suffix K specifies a tapered bore with a taper ratio of 1:12.

The bearing can be mounted directly onto a suitable tapered shaft seat or installed on a cylindrical shaft using an appropriate adapter sleeve.

Important: The nominal bore diameter of 75 mm does not mean that a tapered-bore bearing can be mounted directly onto a standard cylindrical shaft with a diameter of 75 mm.

The required shaft diameter and mounting arrangement depend on the selected mounting method.

C3 - Greater Than Normal Radial Internal Clearance

The suffix C3 indicates radial internal clearance greater than the normal clearance class.

This is particularly important for tapered-bore bearings because the radial internal clearance decreases as the inner ring is driven onto the tapered mounting surface.

The final internal clearance after installation must be checked according to the manufacturer's mounting instructions.

C3 does not indicate a higher precision class or automatically greater load capacity.

Construction and Operating Principle

NKE 2315 K C3 is a double row self-aligning ball bearing designed to accommodate radial loads and angular misalignment.

Its construction includes an inner ring with two raceways, an outer ring with a common spherical raceway, two rows of balls and a cage assembly.

Inner Ring

The inner ring contains two raceways for the rolling elements.

Its tapered bore allows the bearing to be mounted using a suitable tapered shaft seat or adapter sleeve.

Correct mounting is essential because axial displacement on the taper influences the bearing's radial internal clearance.

Outer Ring

The outer ring has a common spherical raceway.

This geometry allows the inner ring and ball assembly to accommodate angular misalignment relative to the outer ring.

Rolling Elements

The bearing contains two rows of balls.

The balls transmit forces between the inner and outer raceways while allowing relative rotation of the bearing rings.

Self-Aligning Function

The principal feature of this bearing is its ability to compensate for angular misalignment between the shaft and housing.

This may be beneficial where minor installation inaccuracies or shaft deflection occur.

The permissible misalignment angle depends on the bearing design, applied loads and operating conditions.

A single universal misalignment value should not be assumed for all self-aligning ball bearings.

Open Bearing Construction

NKE 2315 K C3 is an open bearing without integrated seals.

It requires suitable lubrication and protection against contamination.

The lubrication arrangement must be selected according to the equipment design and operating conditions.

Radial and Axial Load Capacity

Self-aligning ball bearings are primarily designed to accommodate radial loads.

They can also support limited axial loads acting in both directions.

Radial Loads

Radial loads act perpendicular to the shaft axis.

The two rows of balls transmit these loads between the inner and outer rings.

The permissible load depends on the bearing's technical ratings and operating conditions.

Axial Loads

The bearing can accommodate axial loads in both directions, but its axial load capacity is limited compared with bearing designs specifically intended for substantial axial loading.

The exact permissible axial load must be determined from the manufacturer's technical data and the operating conditions.

Misalignment Under Load

The spherical outer ring raceway enables the bearing to accommodate angular misalignment.

However, excessive misalignment or unsuitable loading can adversely affect operating performance.

The bearing arrangement must be evaluated for the actual shaft deflection, load distribution and operating conditions.

NKE 2315 K C3 vs Other Variants

Bearings belonging to the 2315 family may have identical principal dimensions but differ in bore design and radial internal clearance.

The table illustrates the principal differences between these designation types. It does not confirm the availability of every version in the NKE product range.

NKE 2315 K C3 vs NKE 2315 C3

Both bearings have nominal dimensions of 75x160x55 mm and C3 radial internal clearance.

However, their bore designs differ:

• 2315 K C3 has a tapered bore.

• 2315 C3 has a cylindrical bore.

These versions are not automatically interchangeable because they require different shaft mounting arrangements.

NKE 2315 K C3 vs NKE 2315 K

Both versions have a tapered bore with a taper ratio of 1:12.

The difference is the radial internal clearance.

The C3 version has greater initial radial clearance than the normal-clearance version.

This distinction is particularly important because mounting on a tapered surface reduces the internal clearance.

Alternative Designations and Reference Numbers

Natural commercial reference formats include:

• NKE 2315 K C3

• 2315 K C3 NKE

• NKE 2315-K-C3

• 2315-K-C3 NKE

• NKE 2315 KC3

• NKE 2315 self-aligning ball bearing 75x160x55

These are commercial designation variants used to identify the product.

They do not constitute confirmed OEM references or cross-reference numbers from other manufacturers.

Any proposed replacement bearing should be checked against the complete NKE designation and relevant technical specifications.

Bearing Selection and Interchangeability

Before purchasing NKE 2315 K C3, verify:

1. Complete manufacturer designation.

2. Nominal bore diameter of 75 mm.

3. Outside diameter of 160 mm.

4. Width of 55 mm.

5. Tapered bore with a 1:12 taper ratio.

6. Required C3 radial internal clearance.

7. Shaft mounting method.

8. Adapter sleeve selection, if applicable.

9. Radial and axial loads.

10. Permissible angular misalignment.

11. Operating speed and temperature.

12. Lubrication requirements.

When replacing a tapered-bore bearing, the required final internal clearance after mounting must also be verified.

Identical principal dimensions do not guarantee complete interchangeability.

Applications of NKE 2315 K C3

Double row self-aligning ball bearings are used in mechanical arrangements where angular misalignment may occur due to shaft deflection or housing alignment inaccuracies.

Typical application categories for this bearing design include:

• Long shaft support arrangements.

• Selected conveyor assemblies.

• Industrial drive mechanisms.

• Rotating equipment requiring misalignment compensation.

• Bearing arrangements using adapter sleeves.

These are general applications of self-aligning ball bearings, not confirmed OEM applications for the specific NKE 2315 K C3 reference.

Suitability for a particular machine must be verified against its technical requirements.

Installation and Operating Recommendations

Correct mounting is particularly important for self-aligning ball bearings with tapered bores.

Before installation:

• Inspect the shaft and mounting surfaces.

• Verify the correct mounting components.

• Remove contamination from the installation area.

• Check the initial radial internal clearance.

• Use appropriate mounting tools.

• Monitor clearance reduction during mounting.

• Protect the raceways and rolling elements from damage.

• Provide suitable lubrication.

Mounting on a Tapered Seat

When the bearing is driven onto a tapered shaft seat or adapter sleeve, the inner ring expands slightly.

This reduces the radial internal clearance.

The mounting procedure must therefore account for the required clearance reduction and final operating clearance.

Adapter Sleeve Mounting

A suitable adapter sleeve may be used to install the tapered-bore bearing onto a cylindrical shaft.

The sleeve must be selected according to the bearing designation, shaft diameter and mounting requirements.

An adapter sleeve should not be assumed to be included with the bearing unless explicitly stated in the product offer.

Mounting Force and Clearance

The bearing should not be positioned solely by applying an arbitrary tightening torque to the locknut.

The correct mounting method must follow the manufacturer's instructions.

Mounting forces must not be transmitted through the balls and raceways.

Lubrication

NKE 2315 K C3 is an open bearing requiring suitable lubrication.

The lubricant must be selected according to operating speed, load, temperature and environmental conditions.

Storage

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

Protect it from moisture, dust, corrosion and mechanical impact.

FAQ - NKE 2315 K C3

1. What are the dimensions of NKE 2315 K C3?

The bearing has a nominal bore diameter of 75 mm, an outside diameter of 160 mm and a width of 55 mm. Its dimensions are 75x160x55 mm.

2. What type of bearing is NKE 2315 K C3?

It is a double row self-aligning ball bearing with a tapered bore.

3. What does K mean in NKE 2315 K C3?

The suffix K indicates a tapered bore with a taper ratio of 1:12.

4. What does C3 mean?

C3 specifies radial internal clearance greater than normal.

5. Can NKE 2315 K C3 accommodate shaft misalignment?

Yes. The common spherical outer ring raceway allows the bearing to accommodate angular misalignment between the shaft and housing within its design limits.

6. Can NKE 2315 K C3 be mounted on a cylindrical shaft?

Yes, using a suitable adapter sleeve and the correct mounting arrangement. It is not intended for direct mounting onto a standard 75 mm cylindrical shaft without the appropriate mounting components.

7. Can NKE 2315 K C3 replace NKE 2315 C3?

Not automatically. The first bearing has a tapered bore, while the second has a cylindrical bore.

8. Is NKE 2315 K C3 a spherical roller bearing?

No. It is a self-aligning ball bearing. Its rolling elements are balls rather than spherical rollers.

NKE 2315 K C3 - Key Technical Information

NKE 2315 K C3 is a double row self-aligning ball bearing with dimensions of 75x160x55 mm. Its common spherical outer ring raceway allows angular misalignment compensation. The K suffix specifies a tapered bore with a 1:12 taper ratio, while C3 indicates greater than normal radial internal clearance. Correct clearance control during mounting is essential.

NKE bearings are available from simmering.pl, a specialist supplier of industrial bearings and technical sealing products.

With warehouse operations in Lublin, Poland, simmering.pl serves industrial maintenance departments, engineering companies and international B2B customers, with worldwide shipping options.