What are the Main structures and Properties of Combined Roller Bearings?

The same bearing with two or more kinds of rolling bodies jointly bearing several directions of load is called combined roller bearings. This kind of bearing is compact in structure, which can limit the axial displacement of the shaft or shell, and the ultimate speed is low. It is suitable for parts with limited size. This type of bearing has different combined types, and the corresponding structural type can be selected according to the different requirements of the main engine for the bearing force.

1. Needle roller and thrust ball combined bearings

Suitable for parts with particularly limited radial size, it can withstand large combined radial and one-way axial loads. It mainly has a structure without inner ring and inner ring, and the outer cover plays a dustproof role. Main structural types:

NKX00: needle roller and thrust ball combined bearing.

NKX00Z: needle roller and thrust ball combined bearing with outer cover.

NKX00+IR type: needle roller and thrust ball combined bearing with inner ring.

NKX00Z+IR type: needle roller with inner ring and thrust ball combined bearing with outer cover.

2. Needle roller and thrust cylindrical roller combined bearings

Suitable for parts with particularly limited radial sizes and can withstand combined radial and one-way axial loads. It mainly has a structure without inner ring and inner ring, and the outer cover plays a dustproof role.

Needle roller and thrust cylindrical roller combined bearings are equivalent to a set of thrust cylindrical roller bearings and a set of needle roller bearings, which can withstand the combined radial and axial loads. The axial size is smaller than the two sets and compact in structure, which is suitable for components with limited axial and radial sizes. Main structural types:

NKXR type: needle roller and thrust cylindrical roller combined bearing.

NKXR...Z: type needle roller and thrust cylindrical roller combined bearing with housing.

NKXR+IR type: combined bearing with inner ring needle roller and thrust cylindrical roller.

NKXR...Z+IR type: inner ring needle roller and thrust cylindrical roller combined bearing with outer housing.

3 Needle roller and angle contact ball combined bearings

It is equivalent to a set of needle roller bearings and a set of separate angular contact ball bearings. The compact structure is suitable for components with limited radial size and can withstand both radial and small one-way axial loads. If the angular contact ball bearing adopts a double-half inner ring (three-point contact), it can withstand both radial and small bidirectional axial loads. Main structural types:

Type NKIA0000: needle roller and angular contact ball combined bearing.

NKIB 0000: needle roller and three-point contact ball combined bearing.

The author of this article is Shaanxi Gainhui Heavy Industries Co., Ltd., which is a professional bearing manufacturer and supplier in China. The company supplies many types of the bearings, such as thrust needle roller bearings, needle roller bearings with cage, etc. With high quality and competitive bearing products, we sincerely provide services to customers all over the world.

Contact us for more details:

E-mail: emily@gainhui.com

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