Quality control is critical in the manufacturing process of precision balls, especially those used in medical, electronic, and industrial applications. Read on to learn more about steps that should be considered best practices for precision ball manufacturing to ensure the utmost quality.

Steps in the Precision Ball Manufacturing Process

Raw materials are inspected.

Cold heading machine-cuts off the proper length of the wire material, then forms the cylindrical shape into a roughly spherical shape

Flashing-removes any excess material on the perimeter of the balls

Heat treatment-quench and temper process to decrease internal stresses

Then the balls are rapidly cooled in an oil reservoir to produce martensite for hardness

Grinding-before and after heat treatment, to bring the ball closer to its final requirements

Lapping two phenolic plates a very fine abrasive flurry, such as diamond dust, to further decrease surface roughness

Cleaning-removes any processing fluids and residual abrasive materials leftover from the manufacturing process

More rigorous cleaning techniques are employed for balls used in micro-electronics, medical, and food applications

Visual inspection-Every lot is inspected by hand to check for defects and dirt.

Roller gauging-balls are sorted by largest to smallest by the roller gauge. Oversized and undersized balls are eliminated.

Quality control-Each lot is tested for hardness, diameter, roundness, and surface roughness

NINGBO MOSHENG BEARING CO., LTD. is a precision ball bearings manufacturer and a Miniature Ball Bearings supplier. Welcome to visit our official website.