Thrust Needle Bearings
Overview
Thrust Needle Roller Bearings transmit a thrust load between two relatively rotating objects while greatly reducing friction. Thrust needle roller and cage assemblies are complements of small diameter needle rollers arranged in a spoke-like configuration. Needle rollers are equally spaced by means of a cage whose web section separates the rollers and provides guidance to keep them tracking in an orbital path.
Types
Thrust needle roller and cage assemblies also can be unitized with lipped washers which serves as a raceway surfaces for the needle rollers. Washers can be supplied separately or can be mechanically unitized to the needle roller thrust assemblies for ease of handling. Thrust bearings are also available with needle rollers or heavier cylindrical rollers for high load-carrying capacity. All types have very small cross sections.
Sizes
Available in 5 mm to 240 mm (0.1969 – 9.4488 inch).
Features & Benefits
One-way, fool-proof assembly.
Anti-rotation locking.
Lubrication flow enhancements.
High-speed performance.
Application flexibility.
Drawn Cup Needle Bearings
Overview
Drawn Cup Needle Roller Bearings support radial loads and reduce friction between rotating components. The small cross section provides high load-carrying capability with minimum required space. They are easily installed with a press fit in the housing.
Types
Drawn Cup Needle Roller Bearings include (2) basic designs: the Full Complement and the Caged version. Both have a drawn outer shell that serves as the raceway for the rollers contained in the bearing.
1. The Full Complement version is comprised of an optimized number of rollers mechanically retained by the drawn outer shell.
2. The Caged version contains a one-piece steel cage to guide and retain the rollers. This design provides high speed and maximum lubricant retention capability.
Sizes
Available in metric and inch nominal series, with size ranges of 3 mm to 139.7 mm (0.1181 – 5.5000 inch) bore.
Features
Surface coatings available include nickel plating and black oxide coating.
Many materials available, including brass, stainless steel and high-carbon steel.
Specially heat-treated rollers for improved durability.
Controlled stress technology for high-slope applications.
Thin cross section compared to ball bearings, machined race bearings or cage-and-roller assemblies.
Value-added assemblies / Extra precision / Oil holes / Closed end.
Sealed and double-sealed versions available.
Benefits
Lower cost compared to the ball bearing and the machined race bearing.
Unitized and easy to assemble into customer applications.
Located by press fit; nothing needed to hold in place.
Optimal load-carrying capability.
With the cup on the outer race, a bearing-quality housing is not required.
Greater durability.
Sealed bearings help keep lubrication in and contamination out.
Solid Race Needle Bearings
Overview
Solid Race Needle Roller Bearings consist of a machined and ground channel-shaped outer ring with a complement of needle rollers and a cage. The high-strength cage retains and guides the rollers. An optional lubrication groove and hole in the outer ring facilitates re-lubrication. These bearings can be used with or without a machined and ground inner ring, depending on the suitability of the shaft as a raceway surface.
Sizes
Available in 5 mm to 175 mm (0.1969 – 6.8898 inch) bore.
Features & Benefits
Thick outer ring provides maximum load capacity and shock resistance with a relatively small radial cross section.
Optimum speed and lubrication-retention capability.
Cage and Roller Needle Bearings
Overview
Cage and Roller Needle Bearing assemblies feature a complement of needles held in place by a cage with no inner or outer ring. The minimal cross section provides maximum load-carrying capability within the smalleset envelope.
Sizes
Available in 3 mm to 127 mm (0.1181 – 5.0000 inch) bore.
Features & Benefits
Unitized design simplifies handling and installation while allowing for increased lube flow.
Split and segmented designs allow mounting at difficult positions on crankshafts and gearshafts.
Controlled contour rollers optimize contact stress distribution.
Special manufacturing processes help increase roller fatigue resistance and minimize axial drift effects in critical applications.
Optimized cage piloting and geometry minimizes pressure velocity effects.
Steel or polymer cages are available to suit your application requirements.
Coatings are available to help avoid corrosion and improve wear resistance.