Brand: INA
ID: NKIB5902

DESCRRIPTION

INA NKIB5902-XL

Needle Roller / Angular Contact Ball Bearing – X-Life

Brand: INA
Item Number: NKIB5902-XL INA
Manufacturer Part Number: 0507828350000
Also Known As: NKIB5902
EAN: 4012802736113
Category (per Schaeffler): Needle roller / angular contact ball bearing (NKIB, double-direction axial component)
Suffix “XL”: X-Life – optimized internal design for higher load capacity and longer service life

1. Dimensions & Weight

Metric

• Inner Diameter (d): 15 mm
• Outer Diameter (D): 28 mm
• Width (B): 20 mm

Inches

• Inner Diameter: 0.5906 in
• Outer Diameter: 1.1024 in
• Width: 0.7874 in

Weight: 0.052 kg

2. Product Properties

• Type: Combined bearing – needle roller + angular contact ball bearing
• Seal: No seal (open bearing)
• Design:
• Radial load carried by a needle roller bearing section
• Axial load in both directions carried by the integrated angular contact ball bearing section
• Series: NKIB – double-direction axial component
• Performance Class: X-Life (enhanced internal geometry, improved performance)

3. Load Ratings & Speeds

(Data from Schaeffler medias)

• Radial Dynamic Load Rating (Cr): 12,000 N
• Radial Static Load Rating (C0r): 13,600 N
• Axial Dynamic Load Rating (Ca): 2,900 N
• Axial Static Load Rating (C0a): 4,200 N
• Reference Speed (nϑr): 17,000 rpm
• Limiting Speed (nG): 21,600 rpm

Classification:

• ECLASS Number: 23-05-12-01
• ECLASS2 Number: 23-05-12-01

4. Technical Description

The INA NKIB5902-XL is a compact combined bearing designed to carry:

• High radial loads via the needle roller component
• Axial loads in both directions via the angular contact ball bearing component

This design offers:

• High radial load capacity in minimal radial space
• Axial guidance of the shaft in both directions
• Good running accuracy at high speeds

Being part of the X-Life family, this bearing benefits from improved material quality, optimized internal geometry, and enhanced surface finish, resulting in:

• Higher dynamic load ratings
• Reduced friction
• Longer service life compared to standard designs

This open, unsealed configuration requires external lubrication (oil or grease) and is typically used in applications with established lubrication systems.

5. Typical Applications

Ideal wherever radial and axial loads must be supported simultaneously in a compact assembly, for example:

• Precision shafts in transmission and gearbox assemblies
• Machine tools and spindle supports
• Robotics and automation equipment
• Textile and packaging machinery
• General mechanical engineering where space is limited, but combined load capacity is required

6. Key Advantages

• Combined radial + axial load capability in one compact bearing unit
• Double-direction axial support thanks to the angular contact ball section
• High radial load capacity from the needle roller section
• X-Life performance → higher load rating and extended service life
• High speed capability with good running accuracy
• DIN / ISO-compatible dimensions, interchangeable with other NKIB5902 equivalents

   PACKAGE INCLUDES: ONE (1) INA Bearing NKIB5902 XL