Miniature ball bearings must Be Handled with Care

In jobs requiring predictable levels of stiffness, run out, and torque, instrument-sized and Miniature ball bearings excel. Here, precision is boosted by finishes and tolerances measured in millionths of an inch. However, vulnerable to damage from high handling and contamination forces small size and thin raceways to make miniature ball bearing.

After final inspection, Bearing makers typically package the units in Class 100 cleanrooms because even submicron particles can shorten bearing life raise noise and torque levels. For users, a laminar flow workbench or cleanroom is not required for most assembly jobs but recommended, provided certain precautions are taken.

Keep it clean

With bare hands, never handle miniature bearings. Internal raceways are protected by Lubricant but unprotected outer surfaces are attacked by skin acid. Never leave them exposed to the environment and Keep bearings in the original packaging until use.

Handle bearings with talc-free surgical gloves or finger cots. Shoe covers, wear clean-room-spec caps and burr-free tools, clean, and smocks should only be used by Assembly workers, and makeup should be avoided. Finally, with a lint-free cloth, you must wipe mating components, not ordinary cleaning cloths, and regular cotton swabs because they tend to introduce lint.

It is easy

The most common cause of raceway damage in miniature ball bearing china is Excessive force during assembly is probably. The too-short life and elevated noise and torque levels, such damage contributes. The usual suspects are tolerance stack up and interference from poor design or improper handling.

Especially when axial play has been removed through preloading Shock or impact loads can also damage miniature bearings. Bearing contact surfaces can be brindled by placing it on a hard surface or even dropping a preloaded assembly. With shock-absorbing materials cover assembly work surfaces to help prevent impact damage.

Another potential source of high torque and noise levels is bearing misalignment during assembly. About 1° of misalignment is tolerated by typically Small bearings. To bearing raceway faces, Locating-shoulders in mating components must be parallel. Especially when two or more bearings share a common component, housings and Shafts must be concentric to one another.