NTN K 22X29X16 22x29x16 mm - Needle Roller and Cage Assembly

Technical specifications

The dimensions of 22 mm and 29 mm describe the nominal roller envelope diameters rather than the diameters of separate bearing rings.

The stated load ratings, limiting speeds, temperature range and mass are catalogue values for the specified NTN reference. Their applicability must be evaluated against the actual operating conditions.

What does NTN K 22X29X16 mean?

The bearing designation identifies its manufacturer, construction and nominal dimensions.

• NTN - the bearing manufacturer.

• K - needle roller and cage assembly without inner or outer rings.

• 22 - nominal inside roller envelope diameter in millimetres.

• 29 - nominal outside roller envelope diameter in millimetres.

• 16 - nominal assembly width in millimetres.

The complete designation K 22X29X16 should be preserved when identifying the product and comparing manufacturer documentation.

Unlike a complete needle roller bearing with integrated rings, this assembly requires suitable external raceway surfaces.

Construction and operating principle

The NTN K22X29X16 consists of a steel cage containing needle rollers arranged around its circumference.

The cage maintains the spacing and guidance of the rolling elements during rotation.

The assembly does not contain separate inner or outer bearing rings. Instead, the appropriately prepared shaft and housing surfaces function as rolling raceways.

This design reduces the required radial installation space while allowing substantial radial loads to be supported within a compact bearing arrangement.

Key construction characteristics include:

• Needle rollers providing line contact with the raceways.

• Steel cage for roller guidance and separation.

• No integrated inner or outer bearing rings.

• Compact radial dimensions.

• High radial load capacity relative to the installation space.

• Dependence on correctly manufactured shaft and housing raceways.

Important: The K22X29X16 assembly is designed primarily for radial loads. It does not independently provide axial shaft location.

Where axial loads occur, suitable additional locating or thrust-bearing components must be incorporated into the mechanical design.

NTN K22X29X16 - catalogue performance data

The basic dynamic load rating is used in bearing life calculations under defined reference conditions.

The basic static load rating relates to permissible loading under standardized static contact conditions.

Neither value represents a universal maximum operating load.

Actual bearing performance depends on loading, shaft and housing geometry, lubrication, operating temperature, contamination and installation accuracy.

The limiting speeds are catalogue reference values rather than guaranteed operating speeds for every application.

NTN K22X29X16 compared with other needle bearing designs

These constructions differ in installation requirements, load distribution, lubrication and available mounting arrangements.

Nominal dimensional similarity does not guarantee interchangeability.

Selection and interchangeability

Before selecting the NTN K22X29X16, verify the nominal dimensions of 22x29x16 mm, required load capacity, operating speed and installation geometry.

Particular attention should be paid to:

• Shaft raceway hardness.

• Housing raceway hardness.

• Raceway surface finish and roughness.

• Geometrical accuracy and roundness.

• Required operating clearance.

• Shaft and housing alignment.

• Lubrication method and lubricant compatibility.

• Protection against contaminants.

• Axial location of the assembly and associated components.

Because the assembly has no integrated bearing rings, the properties of the shaft and housing raceways directly affect bearing performance.

Needle roller and cage assemblies from other manufacturers with the same nominal dimensions may be potential alternatives, but interchangeability requires verification of the relevant catalogue specifications and installation requirements.

Alternative designations and search references

Common representations of the product designation include:

• NTN K 22X29X16

• NTN K22X29X16

• K22X29X16 NTN

• K 22X29X16 needle roller bearing

• NTN needle roller and cage assembly 22x29x16

• Needle cage bearing 22x29x16 mm

These are descriptive or formatting variants of the designation, not independently verified OEM cross-reference numbers.

The complete NTN reference should be used when checking technical documentation and replacement suitability.

Typical applications

Needle roller and cage assemblies of this construction may be used in appropriately designed:

• Compact industrial gearboxes.

• Mechanical transmission assemblies.

• Rotating shaft arrangements.

• Industrial machinery requiring limited radial installation space.

• Mechanical systems with hardened and accurately finished raceway surfaces.

• Compact rotating components subjected primarily to radial loads.

These are typical application areas for needle roller and cage assemblies, not verified OEM applications of this specific NTN reference.

Installation and operating recommendations

Before installation, inspect the shaft and housing raceways for cleanliness, surface damage and dimensional accuracy.

The raceway surfaces must meet the requirements for needle roller bearing operation.

During assembly:

• Avoid damaging the needle rollers or deforming the cage.

• Ensure correct positioning and alignment.

• Apply suitable lubrication before operation.

• Prevent contamination of the rolling contact surfaces.

• Verify the required operating clearance.

• Ensure appropriate axial positioning of the surrounding components.

Do not install the assembly directly against untreated shaft or housing surfaces unless their suitability as bearing raceways has been confirmed.

Incorrect raceway hardness, surface finish or geometry may result in premature wear or bearing failure.

FAQ - Frequently asked questions

1. What are the dimensions of NTN K22X29X16?

The nominal inside roller envelope diameter is 22 mm, the outside roller envelope diameter is 29 mm, and the assembly width is 16 mm.

2. Does NTN K22X29X16 include inner and outer bearing rings?

No. It is a needle roller and cage assembly without integrated bearing rings. The shaft and housing surfaces are designed to function as raceways.

3. What is the dynamic load rating of NTN K22X29X16?

The catalogue basic dynamic load rating Cr is 18.7 kN.

4. What is the static load rating?

The catalogue basic static load rating C0r is 22.7 kN.

5. What are the limiting speeds?

The catalogue limiting speed is 12,000 rpm with grease lubrication and 18,000 rpm with oil lubrication.

6. Does NTN K22X29X16 have a metal cage?

Yes. The specified NTN reference uses a steel cage.

7. Can NTN K22X29X16 support axial loads?

Its primary function is to support radial loads. Axial loads and shaft location require suitable additional components or a separate bearing arrangement.

8. Can NTN K22X29X16 be replaced with another brand?

Potential replacement assemblies must be checked for dimensions, load ratings, cage construction, raceway requirements and installation conditions. Matching dimensions alone do not guarantee complete interchangeability.

NTN K22X29X16 - key information

The NTN K22X29X16 is a needle roller and cage assembly with dimensions of 22x29x16 mm, featuring a steel cage and no integrated bearing rings. Its catalogue dynamic load rating is 18.7 kN, and its static load rating is 22.7 kN. The compact construction supports radial loads while requiring appropriately prepared shaft and housing raceways for reliable operation.

The product is offered through the specialist B2B industrial trading platform simmering.pl, serving industrial companies, technical purchasing departments and maintenance operations, with worldwide shipping from stock in Poland.