Chrome Precision ABEC 5 Bearings 15x21x4 (2)
These are ABEC 5 precision bearings which are much higher grade than the average RC bearing widely sold.
- Measurements: Inside Diameter x Outside Diameter x Width
- Balls: Chrome Steel
- Seals / Shields: Metal Shield one side and Blue Rubber shield the other. Shield can be removed if desired.
- Retainer Material: Chrome Steel
- Precision Rating: ABEC 5
- Lubrication: Grease 58,000 RPM
- Structure: Deep Groove
- Hardness of Balls: HRC59-65
- Hardness of Rings: HRC59-65