Combined Needle Roller Bearings

Combined needle roller bearings are compact bearing units that combine a radial needle roller bearing with one or more axial rolling bearings into a single assembly. They are designed to support both radial and axial loads simultaneously, making them an ideal solution for applications where space is limited and high load capacity is required.

These bearings provide excellent rigidity, high running accuracy, and compact dimensions, eliminating the need for separate radial and thrust bearings. They are widely used in industrial machinery, automotive transmissions, machine tools, agricultural equipment, textile machinery, and power transmission systems.

Bearing Designs

Combined needle roller bearings are available in several standard designs:

• Needle Roller / Axial Ball Bearing (NKIA Series)

• Needle Roller / Axial Ball Bearing (NKIB Series)

• Needle Roller / Axial Cylindrical Roller Bearing (NKXR Series)

• Needle Roller / Axial Cylindrical Roller Bearing (NKX Series)

• Needle Roller / Axial Angular Contact Ball Bearing

• Double-Direction Combined Needle Roller Bearings

The selection depends on the magnitude and direction of the axial load as well as the required operating speed.

Features

• Supports combined radial and axial loads

• Compact space-saving design

• High radial load carrying capacity

• High axial load capacity

• High rigidity

• Low friction operation

• Excellent running accuracy

• Long service life

• Factory lubricated or suitable for grease and oil lubrication

• Easy installation

Advantages

• Replaces separate radial and thrust bearings

• Reduces assembly space

• Simplifies machine design

• Improves shaft guidance

• Increases bearing reliability

• Reduces maintenance requirements

• Suitable for high-speed operation

• Cost-effective bearing solution

Applications

Combined needle roller bearings are widely used in:

• Machine tools

• Automotive transmissions

• Industrial gearboxes

• Agricultural machinery

• Textile machinery

• Printing machines

• Packaging machinery

• Conveyor systems

• Material handling equipment

• Robotics and automation

• Construction machinery

• Hydraulic pumps and motors

• Power transmission equipment

Typical Series

Benefits

• High radial and axial load capacity

• Compact and lightweight construction

• Excellent positioning accuracy

• Low operating noise

• High-speed capability

• Reliable operation under heavy loads

• Long maintenance intervals

Combined needle roller bearings provide an efficient and economical solution for applications requiring the simultaneous support of radial and axial loads while maintaining compact dimensions and high performance.