The structural types of needle roller bearings are diverse, and the scope of application varies as follows:

(1) SUNTAI needle roller and cage assembly. The needle roller and cage components are actually needle roller bearings without collars.

Scope of application: This type of bearing is commonly used for the large and small ends of connecting rods in gearboxes, motorcycles, and automobiles. Due to the increase in temperature inside the cylinder, the bearings need to withstand high temperatures

2) SUNTHAI Solid Ring Needle Roller Bearing The commonly used solid ring needle roller bearings are NA and RNA types.

Scope of application: Solid ring needle roller bearings are commonly used in machine tools and automotive gearboxes. Their advantages are small radial cross-sectional dimensions and large radial loads. Standard solid ring needle roller bearings all have cages, so the rotational speed is high and can meet the requirements of machine tools and automotive gearboxes.

(3) SUNTHAI Roller Needle Bearing

Scope of application: Printing machinery, forage machinery, agricultural machinery, CNC equipment guide rollers, conveyor lines, etc.

(4) SUNTHAI needle roller bearings with stamped outer rings. There are two types of bearings: perforated and sealed. The stamped outer ring needle roller bearing does not have an inner ring, and the needle directly contacts the surface of the shaft. Therefore, the machining accuracy and heat treatment hardness of the shaft should be the same as that of the bearing inner ring.

Scope of application: Stamped outer ring needle roller bearings with cages are suitable for high-speed and heavy-duty applications, and are commonly used in gearboxes of machine tools, automobiles, motorcycles, or textile machinery. Stamped ring needle roller bearings without cages are suitable for swing working conditions under heavy loads due to being filled with needles. Such as the frame of an aircraft, the shaft end of a missile's main wing, etc.