Needle roller bearing

Needle roller bearing

Needle roller bearings are a bearing that is classified as either radial or thrust depending on the direction of the load being supported. They are used to reduce friction of a rotating surface.

Needle roller bearings are separable radial bearings with very low sectional heights that feature high load carrying capability. Needle roller bearings use long, slim rollers, the so -called "bearing needles" as rolling elements. Due to the possibility of mounting inner and outer rings of needle roller bearings separately, mounting becomes much simpler, even under the conditions of mass production. The comparatively thin - walled needle roller bearing rings are usually mounted with tight fits.

Needle bearings have a large surface area that is in contact with the bearing outer surfaces compared to ball bearings. Additionally there is less added clearance so they are much more compact.

Needle roller bearings include bearings whose rollers slightly exceed the size range of needle rollers as stipulated by ISO. Needle roller bearings include drawn cup and solid radial bearings, as well as application-specific cam followers, and roller followers. Thrust bearings include thrust needle bearings.

Needle bearings feature a smaller cross-section, higher load-carrying capacity, greater rigidity, and lower inertia forces that facilitate size and weight reductions in machinery. They’re designed to withstand oscillation, perform under severe conditions, and interchange with sliding bearings.

Needle roller and cage assemblies are offered in single or double row, solid or split cage, metric and inch sizes; as well as in connecting rod bearings for special applications.

Single and double row bearings are available with or without ribs, and with or without inner rings.

Thrust bearings are offered in single row roller and cage assemblies.

Needle roller bearings can be found in the following applications:

1 Gear pumps

2 Mud pumps

3 Oil field pumping jacks

4 Helicopter rotors and transmissions

5 Telehandlers

6 Material handling equipment

7 Hydraulic pumps

8 Sheave Blocks

9 Hoist drum shaft

10 Marine crankshafts and connecting rods

11 Pipe handling tables in steel mill equipment

12 Paper punch presses

13 Planet gears and mainshaft bearings of a clutch drive or mechanical press

14 Calendar rolls in textile machinery

15 Railroad tampering equipment

Needle roller bearings Features and Benefits:

• Range includes solid, drawn cup or cage and roller options
• High quality steel - ultra clean steel to extend bearing life by up to 80%

Drawn-Cup Needle Roller Bearings 

Used in automotive applications such as camshaft journals, compressors, and powertrain.

Thrust Needle Roller Bearings