DRAWN CUP NEEDLE ROLLER BEARING

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Balaji Bearings produces and manufactures special bearing solutions, namely, Drawn cup needle roller bearings, which offer high load capacity and compact size. Being a reliable distributor, we have clients in Sri Lanka, South Africa, the UAE, Nigeria, Egypt, Indonesia, Thailand, and Kuwait. Our high-quality drawn cup bearings are specially made to be used in cases where radial space is hard-capped and give better performance with a highly efficient pack.

Applications of Drawn Cup Needle Roller Bearings

• Automotive Transmissions: This type of transmission is widely used on gears and shafts in contemporary, multi-speed transmissions, whose low radial cross-section is essential to reduce the gearbox size.
• Universal Joints (U-Joints): These are the central rolling elements of U-joints, and they effectively take care of oscillating motion and large loads in a small space in the drive train.
• Two-Stroke Engines: They are common in connecting road and crankshafts of small engines (such as chain saws) and provide high load capacity in a small, lightweight system.
• Compressors and Hydraulic Pumps: These are applied in piston pumps and compressor cranks, high load, and high speeds; however, they consume very little radial space, a significant concern in the total size of pumps.

Features of Drawn Cup Needle Roller Bearings

• Extremely Low Radial Cross-Section: The peculiarity is the thin drawn outer ring (the "cup"), instead of a thick outer ring, so that a minimal space is occupied in assembly.
• Large Load Capacity per Size: With a large ratio of long, thin needle rollers, the quantity of contact lines available is high, which gives the roller a relatively high load carrying capacity compared to a ball bearing of the same oil outer diameter.
• Easy and Economical to Mount: The cup could be press-fitted into a housing bore, and no machined raceway was required. This saved the time and effort involved in a complicated mounting process and lowered manufacturing costs.
• Dependence on Housing/Shaft as Raceways: In most designs, the assembly does not require any extra inner bearing ring, and this means that the shaft and housing bore have to be hardened and ground to form raceways, thus contributing to their compactness.