Needle Roller Bearings
A needle roller bearing is a special type of roller bearing which uses long, thin cylindrical rollers resembling needles. Ordinary roller bearings' rollers are only slightly longer than their diameter, but needle bearings typically have rollers that are at least four times longer than their diameter.Like all bearings, they are used to reduce the friction of a rotating surface.
Compared to ball bearings and ordinary roller bearings, needle bearings have a greater surface area in contact with the races, so they can support a greater load. They are also thinner, so they require less clearance between the axle and the surrounding structure.
Needle bearings are heavily used in automobile components such as rocker arm pivots, pumps, compressors, and transmissions. The drive shaft of a rear-wheel drive vehicle typically has at least eight needle bearings (four in each U joint) and often more if it is particularly long, or operates on steep slopes.

- NTN K29X34X27.8 needle roller bearings
- Yes
- 0.354 Inch | 9 Milli

- NTN K8X12X10 needle roller bearings
- 1.181 Inch | 30 Mill
- 1.693 Inch | 43 Mill

- Timken K70X78X30H needle roller bearings
- PEER BEARING CO.
- PEER BEARING CO.

- Timken DL 30 16 needle roller bearings
- 4549557063084
- Bearings

- KOYO HK1010 needle roller bearings
- 2.32
- Flange Block

- 45 mm x 72 mm x 20 mm KOYO NAO45X72X20 needle roller bearings
- N/A
- 1.772 Inch | 45 Mill

- KOYO R73/20 needle roller bearings
- Non-expansion
- Double Lip Nitrile R

- KOYO HJ-14817848 needle roller bearings
- Single Row
- Class 3

- NSK FJL-1212L needle roller bearings
- Ball Angular Contact
- N/A