Needle Roller Bearings
Needle roller bearings sometimes called needle bearings use long
and narrow cylindrical rollers that sometimes exceed JIS/ISO size
ranges. They are categorized as thrust or radial bearings based on
which load direction they support. Radial types include drawn-cup
and solid types, as well as application-specific track rollers
Thrust needle and thrust roller bearings respond to axial load
needs
Typical Structure
There are four main types of needle roller bearings, including
caged roller, drawn cup, precision race and thrust roller. Their
typical structure includes an inner race or just a shaft, a cage to
contain the needle rollers and an outer raceway. Selecting the
correct type of needle roller bearing for your particular
application depends on a variety of factors such as the necessary
load capacity, load type and speed, as well as the expected
temperature limits, lubrication requirements and service life.
Needle Roller Bearings Type
- Needle roller bearing with cage
- Connecting rod needle roller bearings with cag
- Drawn cup needle roller bearings
- Solid type needle roller bearings
- Separable solid type needle roller bearings
- Clearance adjusting needle roller bearings
- Thrust roller bearings
Advantages
- More noisy at very high speeds.
- Low resistance to shock loading.
- More initial cost.
- Design of bearing housing complicated
Application
Needle roller bearings are most commonly used in automobile,
agricultural and construction components, including compressors,
transmissions, gearboxes, pumps, torque converters, suspensions,
U-joints and rocker-arm pivots. They’re also found in domestic
appliances such as portable power tools, pump clutches and spindles
