Cylindrical and Needle Rollers for Bearings and Motion Systems
REDHILL supplies cylindrical and needle rollers for bearings, gearboxes and motion systems. Roller size, shape and surface finish affect load capacity and running accuracy. Therefore, match the roller specification to the load, speed and available space.
Precision Cylindrical Rollers
Cylindrical rollers form line contact with bearing raceways. This contact helps bearing designs carry high radial loads. As a result, common uses include gearboxes, electric motors and industrial machinery.
Precision Needle Rollers
Needle rollers have a small diameter in relation to their length. Therefore, they suit bearing designs with limited radial space. In addition, they support compact rotating and oscillating mechanisms.
Key Technical Specifications
- Material: Through-hardened AISI 52100 bearing steel.
- Needle Roller Hardness: Typical reference range of 58–65 HRC. Confirm the final hardness against the product drawing.
- Geometry: Specify the rolling surface profile and end-face shape separately.
- Surface Finish: Specify maximum Ra values for the working surface and end faces.
Applications of Needle Rollers
- Needle Roller Bearings and Cages: Radial support in transmissions, pumps and small gear motors.
- Planetary Gearsets: Compact bearing support for planet gears.
- Pivots and Actuators: Rolling supports for rotating or oscillating motion.
Applications of Cylindrical Rollers
- Cylindrical Roller Bearings: Radial support in gearboxes, motors and industrial equipment.
- Cam Followers and Track Rollers: Internal rolling elements for suitable conveyor and automation bearing designs.
- Linear Guides: Rollers for guide systems that need high stiffness and accurate motion.
Roller Profile and Lubrication
A suitable crown or end relief reduces stress peaks near the roller ends. In addition, the surface finish helps support an effective lubricant film. In bearings with guiding flanges, the end-face shape also affects friction. However, bearing design, alignment and lubrication still affect service life. Therefore, define the profile and finish for your bearing arrangement.
Dimensions and Custom Requirements
We can review standard and custom roller dimensions. Also state any sorting, coating or packaging requirements.
Finally, send us your drawing, material, quantity and working conditions. Include the diameter, length, tolerances, hardness and surface finish. We can then confirm suitable options, availability and lead time.
