combined needle roller bearings

Combined needle roller bearings are specialized bearings that integrate needle roller bearings and angular contact ball bearings or thrust ball bearings or thrust cylindrical roller bearings to support both radial and axial loads in a compact design.These bearings are widely used in industries such as automotive, robotics, industrial machinery, and aerospace, where compactness, durability, and high load capacity are critical.

ZMS supplies very full series combined needle roller bearings in China for 15 years. With high quality and good price, we win customers around the world. From best famous manufacturers INA, SKF and IKO,NTN to Chinese manufacturers of high quality combined needle roller bearings, we can help you fast deep into this from price to quality compare.

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NKIA59 Series

Structure: They have a needle roller bearing and an angular contact ball bearing integrated into one unit.
Load capacity: They can support both radial loads (via the needle rollers) and axial loads in one direction (via the ball bearing).
Applications: Commonly used in gearboxes, machine tools, automotive transmissions, and other machinery where space is limited but both radial and axial loads need to be supported.
Designations: For example, NKIA5906, NKIA5907, etc., where the numbers indicate the size.

NATA59 Series

Structure: NATA bearings consist of a needle roller bearing and an angular contact ball bearing combined in a single unit.
Load Capacity: They can support high radial loads (from the needle rollers) and axial loads in both directions (from the angular contact ball bearing).
Separable Design: Many NATA bearings are separable, meaning the inner ring can be removed from the outer ring and rolling elements, which can be helpful for installation and maintenance.
Applications: Used in gearboxes, machine tools, automotive transmissions, and other machinery where both radial and bidirectional axial loads need to be supported in a compact space.

NKIB Series

Structure: NKIB bearings combine a needle roller bearing (for radial load) with an angular contact ball bearing (for axial load in both directions) in a single unit.
Axial Load: Unlike NKIA bearings (which only support axial load in one direction), NKIB bearings can support axial loads in both directions.
Separable Inner Ring: The inner ring of NKIB bearings is usually split, which allows for easier mounting and dismounting, especially when both radial and axial loads are present.
Applications: Commonly used in gearboxes, automotive transmissions, machine tools, and other machinery where both radial and bidirectional axial loads need to be supported in a compact space.
Designations: Examples include NKIB5906, NKIB5907, etc., where the numbers indicate the size.

NATB Bearings

Structure: NATB bearings combine a needle roller bearing (for high radial load capacity) with an angular contact ball bearing (for axial load capacity in both directions) in a single, compact unit.
Axial Load: NATB bearings can support axial loads in both directions, thanks to the angular contact ball bearing component.
Separable Inner Ring: The inner ring is usually split, which allows for easier mounting and dismounting, especially when both radial and axial loads are present.
Applications: Commonly used in gearboxes, machine tools, automotive transmissions, and other machinery where both radial and bidirectional axial loads need to be supported in a limited space.
Designations: Examples include NATB5906, NATB5907, etc., where the numbers indicate the size.

NKX Series

Structure: NKX bearings consist of a needle roller bearing (for radial load) combined with a thrust ball bearing (for axial load in one direction) in a single unit.
Axial Load: NKX bearings can support axial loads in one direction only.
Non-separable: The bearing is generally non-separable, meaning the components are assembled as a single unit.
Applications: Commonly used in machine tools, automotive transmissions, pumps, and other machinery where both radial and unidirectional axial loads need to be supported in a compact space.
Designations: Examples include NKX20, NKX25, NKX30, etc., where the numbers indicate the bore size in millimeters.

Variants:
NKX: Standard type, without a cover.
NKX…Z: With a cover (Z) on the thrust ball bearing side, which helps retain grease and protect against contamination.

NAX Series

NAX bearings are a type of combined needle roller/axial ball bearing, similar in function to the NKX series, but the designation “NAX” is most commonly used by IKO (Japan) and some other manufacturers.

NKXR Series

Structure: NKXR bearings combine a needle roller bearing (for radial load) with an axial cylindrical roller bearing (for axial load in one direction) in a single, compact unit.
Axial Load: NKXR bearings can support high axial loads in one direction, thanks to the cylindrical roller thrust bearing component.
Non-separable: The bearing is generally non-separable, meaning the components are assembled as a single unit.
Applications: Commonly used in machine tools, gearboxes, pumps, and other machinery where both high radial and unidirectional axial loads need to be supported in a limited space.
Designations: Examples include NKXR20, NKXR25, NKXR30, etc., where the numbers indicate the bore size in millimeters.

Variants
NKXR: Standard type, without a cover.
NKXR…Z: With a cover (Z) on the axial side, which helps retain grease and protect against contaminatio

NBX Series

NBX bearings are a type of combined needle roller/axial cylindrical roller bearing, and the designation “NBX” is most commonly used by IKO (Japan). They are functionally similar to the NKXR series from INA and other manufacturers.

NX Series

Structure: NX bearings combine a needle roller bearing (for radial load) with a thrust ball bearing (for axial load in one direction) in a single, compact unit.
Axial Load: NX bearings can support axial loads in one direction only, thanks to the thrust ball bearing component.
Non-separable: The bearing is generally non-separable, meaning the components are assembled as a single unit.
Applications: Commonly used in machine tools, pumps, gearboxes, and other machinery where both radial and unidirectional axial loads need to be supported in a limited space.
Designations: Examples include NX7, NX10, NX12, NX15, NX17, NX20, etc., where the numbers indicate the bore size in millimeters.

Variants
NX: Standard type, without a cover.
NX…Z: With a cover (Z) on the thrust ball bearing side, which helps retain grease and protect against contamination.

ZARN Series

Structure: ZARN bearings consist of a double direction axial cylindrical roller and cage assembly (for high axial load in both directions) and a radial needle roller bearing (for moderate radial load). The bearing is non-separable and compact.
Axial Load: ZARN bearings can support very high axial loads in both directions, making them ideal for screw support applications.
Radial Load: They also support moderate radial loads, thanks to the integrated needle roller bearing.
Preload: ZARN bearings can be preloaded to increase rigidity, which is important for precision applications like machine tool spindles and ball screw supports.

Applications:
Commonly used in:
Ball screw support in CNC machines
Machine tool spindles
Precision machinery
Robotics

Designations:
Examples include ZARN1545, ZARN2052, ZARN2572, etc., where the numbers indicate the size (bore diameter and width).

Variants
ZARN: Standard type, with a full complement of rolling elements.
ZARN…TN: With a polyamide (plastic) cage for the axial cylindrical roller assembly.
ZARF: Similar to ZARN, but with a flange for easier mounting.

ZARF Series

ZARF bearings are a type of combination bearing, specifically designed for applications that require both axial (thrust) and radial load support. The name “ZARF” is a designation used by the bearing manufacturer INA (part of Schaeffler Group), and it stands for:
Z: Double row
A: Axial
R: Radial
F: Flanged

Typical applications:
Ball screw support in CNC machines
Precision rotary tables
Robotics
Linear motion systems