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FANUC Alpha Series A290-7021-X220

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A290-7021-X220

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The FANUC A290-7021-X220 is a washer spacer constructed from stainless steel 18-8 (A2) material. It is designed specifically for compatibility with FANUC S-100/110 wrist modules, offering reliable dimensional stability and strength during operation.

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Technical specifications for A290-7021-X220

ManufacturerFANUC
Product TypeWasher Spacer
Product LineAlpha Series
Part NumberA290-7021-X220
MaterialStainless Steel 18-8 (A2)
Tensile Strength≥ 700 MPa (A2-70)
Yield Strength≥ 450 MPa
Brinell Hardness95–215 HB
FinishPlain/Matte (unplated)
CompatibilityFits FANUC S-100/110 wrist modules
Mount OrientationRadial spacer stack (inferred)
Surface HardnessHRC 25 ± 3
Surface Roughness≤ 0.8 µm Ra
Operating Temperature–20 °C to +120 °C
Corrosion ResistanceYes
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The FANUC A290-7021-X220 washer spacer belongs to the Alpha Series and is made from stainless steel type 18-8 (A2), known for its durability. With a minimum tensile strength of 700 MPa (A2-70) and a yield strength of 450 MPa, this component is engineered for robust performance. In addition, it is characterized by a Brinell hardness value of 95–215 HB, indicating its resistance to deformation under stress.

Designed with compatibility in mind, this spacer fits seamlessly with FANUC S-100 and S-110 wrist modules. The mount orientation is inferred to be that of a radial spacer stack. The part has a plain or matte finish with no plating, enhancing its aesthetic while maintaining essential functionality.

The surface hardness falls within a range of HRC 25 ± 3, contributing to its overall strength and resistance to wear. Furthermore, the surface roughness is measured at a maximum of 0.8 µm Ra, highlighting the precision manufacturing processes applied. Operating within a temperature range of -20 °C to +120 °C, it demonstrates versatility in various environments. Notably, this washer spacer exhibits corrosion resistance, ensuring longevity and reliability even in challenging conditions.