A2 Stainless Steel Thrust Bearing combine the dimensional form of ISO / DIN with the material properties of grade A2-70 (304): good general corrosion resistance, largely non-magnetic, service range approx. -200 °C to +400 °C. This page summarizes the grade data, its corrosion behavior in service, the comparable grades, and the sizes supplied.
Why Choose A2 Stainless Steel for Thrust Bearing — ISO / DIN (Series 126)
The most common stainless grade for indoor and general outdoor fasteners. For thrust bearing — iso / din (series 126), this matters when good general corrosion resistance is the primary requirement.
Mechanical & Physical Properties
| Grade designation | A2-70 (304) |
|---|---|
| Magnetic response | Largely non-magnetic |
| Service temperature | approx. -200 °C to +400 °C |
| Corrosion characteristic | Good general corrosion resistance |
Galvanic & Galling Considerations
Two important notes for stainless thrust bearing — iso / din (series 126): (1) stainless can gall on stainless threads under load — use a thread lubricant or anti-galling compound, especially for M6 and below; (2) when joined to aluminum or galvanized steel, stainless can drive galvanic corrosion of the less-noble metal in wet service — isolate with a coating or sleeve where appropriate.
Comparable Grades
For Thrust Bearing — ISO / DIN (Series 126), the alternative stainless grade is A4 (316). A2 (304) suits general indoor and outdoor service; A4 (316) adds molybdenum for marine and chloride environments. Where higher strength matters more than corrosion, switch to plated alloy-steel class 8.8 or 10.9.
Sizes of Thrust Bearing — ISO / DIN (Series 126) Available in A2 Stainless Steel
| Bore d (mm) | Outer diameter D (mm) | Total height H (mm) | Dynamic axial load Ca (kN) | Limit speed (rpm) | Reference standard |
|---|---|---|---|---|---|
| 10 | 24 | 9 | 9.65 | 4000 | ISO 104 / GB/T 301 |
| 15 | 28 | 9 | 11.5 | 3800 | ISO 104 / GB/T 301 |
| 20 | 35 | 10 | 17.0 | 3200 | ISO 104 / GB/T 301 |
| 25 | 42 | 11 | 22.0 | 2800 | ISO 104 / GB/T 301 |
| 30 | 47 | 11 | 27.0 | 2400 | ISO 104 / GB/T 301 |
| 40 | 60 | 13 | 42.5 | 2000 | ISO 104 / GB/T 301 |
| 50 | 70 | 14 | 52.0 | 1700 | ISO 104 / GB/T 301 |
| 60 | 85 | 17 | 70.0 | 1500 | ISO 104 / GB/T 301 |
| 80 | 105 | 19 | 93.0 | 1200 | ISO 104 / GB/T 301 |