Stainless ball bearing W 638/4-2Z from the manufacturer SKF with dimensions 4x9x4 mm. The K ball bearing has frictionless protective plates on both sides of the bearing.
✔ Stainless steel
✔ Maintenance free
✔ Extended Lifespan
✔ Retains the lubricating grease
✔ Friction-free protective plates
✔ High quality and performance
✔ Temperatures up to +150°C
| Specification | |
| Product | W 638/4-2Z SKF Stainless Ball Bearings 4x9x4 |
| Manufacturer | SKF |
| Manufacturer's article number |
W 638/4-2Z |
| Stock game | CN - Normal (Default) |
| Temperature range | -30°C to +150°C |
| Loading | Radial and axial loads in both directions |
| Reference speed | rpm |
| Limit speed | rpm |
| Load capacity Dynamic (C) | kN |
| Bearing capacity Static (C0) | kN |
| Weight | g |
| Dimensions | |
| Inner diameter ( d ) | 4 mm |
| Outer diameter ( D ) | 9 mm |
| Width (B ) | 4 mm |
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| Prefix | |
| W | The ball bearing is made of stainless steel |
| Surname (Suffix) | |
| 2Z | The ball bearing has protective plates on both sides of the bearing |
| Material | |
| Inner ring | Stainless steel |
| Outer ring | Stainless steel |
| Bullets | Stainless steel |
| Ball holder | Stainless steel |
| Enclosure (seal) Low Friction High RPM Retention of Fat Protection against Dust Protection against Water Static Dynamic High pressure |
Stainless steel Excellent ✔ ✔ ✔ Excellent ✔ ✔ ✔ Acceptable ✔ Acceptable ✔ Not recommended Not recommended Not recommended |