SR20-ZZ AISI 420 Stainless Steel Inch Bearing, ZZ Metal Shielded, High Hardness Wear Resistant Mini Ball Bearing

Model: SR20-ZZ

Material: 420 Stainless Steel

Dimensions: 1-1/4" X 2-1/4" X 1/2"

Seal Type: ZZ

SR20-ZZ miniature inch bearing made of AISI 420 martensitic stainless steel with double ZZ metal shields. Features high hardness and good wear resistance, suitable for light-load, dusty, low-corrosion environments. Samples and custom lubrication available.

Product Details

SR20-ZZ is an inch-size miniature deep groove ball bearing adopting AISI 420 martensitic stainless steel. It is equipped with double non-contact ZZ metal dust shields, which effectively block dust and particulate impurities while keeping low torque for high-speed rotation.

AISI 420 stainless steel can be hardened through heat treatment, delivering superior hardness and wear performance compared with austenitic stainless steel like 316 or 304. It offers basic rust protection for dry and lightly humid working conditions.Not suitable for saltwater, chloride-rich or strong corrosive environments. It is a balanced choice when you need both hardness and affordable rust resistance.

Application Scenarios

Model machinery, hobby equipment, small sliding assemblies, office automation, packaging jigs, micro transmission parts, indoor light-load equipment and dry dusty machinery.

We supply SR20-ZZ 420 stainless steel bearings from stock. Small sample orders are welcome, and we accept OEM customization for special grease, internal clearance and private label.