The manufacturing process for Needle Bearing Pins and Rollers is a meticulous one that involves several steps to ensure optimal performance and cost efficiency. Here’s a brief overview:
- Cut Wire to Length: The process begins with slightly oversized wire, which is procured or drawn down to the appropriate diameter. This wire is then cut to the approximate desired length.
- Rough Machining: The next step involves machining, typically done in a lathe. The diameter is turned within 0.0005”-0.001” larger than the finish diameter of the pin.
- Machine Ends if Necessary: Depending on the requirements, pins can have various end confirmations such as straight, deburred, pointed, spherical, chamfered, or even some special configuration.
- Harden: The pins are processed through a continuous furnace with atmospheric protection. They are quenched in oil and then tempered to achieve a hardness of 62-65HRC.
- Centerless Grinding: This critical step ensures that the outer diameter (OD) can be held within +/- 0.0001”. Plunge grinding can also be done on non-cylindrical shapes that cannot be through fed.
- 100% Inspection: After the manufacturing process is complete, each pin is 100% inspected using specially built machines. These machines use cameras and sophisticated non-contact methods to verify length, diameter, and end profile, thus guaranteeing perfect quality.
This process ensures that the Needle Bearing Pins and Rollers are manufactured to the highest standards, providing reliable and efficient performance.
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