Application and Special Features of Needle Roller Bearings

There are many types of bearings in roller bearing company, the most common being ball bearings, or tapered roller bearings, cylindrical or spherical roller bearings. They are designed to meet specific technical requirements to suit specific uses. Of these, needle roller bearings are less well known, but are still essential in certain applications where reliability and durability are critical. Discover the hidden faces of precision needle roller bearings suitable for many mechanisms.

1. What is a needle roller bearing?

Needle roller bearings are a special type of bearing with small diameter cylindrical rollers that provide higher load carrying capacity. Plus, they can withstand higher vibrations than other options. You can choose from several styles of needle roller bearings. Options can include single row, double row, solid or split, etc. Other needle roller bearing roller specifications include: Metric or imperial series, open or closed, open single seal (U) or double seal design (UU), larger relubrication holes available (over 10mm bore), full complement of rollers, special internal clearance and special heat treatment, AISI440C stainless steel is available in limited range.

2. What is special about needle roller bearings?

The rolling elements used in needle roller bearings are shaped like needles, hence the name. These steel needles, with round or flat ends, have a diameter of less than or equal to 5 mm and must be at least 3 times the diameter. Linear motion bearing can withstand very heavy loads due to the contact surfaces formed by needle rollers mounted in steel or moulded polyamide cages. It enables extremely compact assemblies and is the bearing of choice when looking for a good balance between performance, size and weight. Therefore, compared to a ball bearing or cylindrical roller bearing of the same shaft diameter, a needle roller bearing can carry 2 to 8 times the load, all in a very small space.

3. Needle roller bearing uses

The power of having options means you can pick and choose linear motion parts you need, so what should you consider using needle roller bearings for? Depending on the field of activity and application of needle roller bearing uses, needle roller and cage assemblies can be integrated between the rings to strengthen the assembly and ensure the connection between the various mechanical parts. Therefore, needle roller bearing uses come in many forms (cages, bushings, bearings with solid rings, combination bearings, needle roller thrust bearings, cam followers, etc.) to meet all technical constraints of the industrial market. These bearings combine robustness, precision and durability across all industrial markets and are very common. Common applications for needle roller bearings include: automotive, lawn and garden equipment, machine tools, oil and gas, power tools, primary metals, printing presses.

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