Wheel bearings compatible with all coaster-brake bikes featuring an HR 90 hub / HR 905, such as those found on Sachs 503 and Puch X30 mopeds.
Two bearings are required per wheel.
Outer diameter: approx. 37 mm
; inner diameter: approx. 25 mm
; ball diameter: 6.34 mm
A nostalgic product from the premium swiing® brand that meets the highest standards.
STAR - Ball Retainer K 042
Original Sachs part number: F 4761
| Ø inside | 25 mm |
| Stock number | K042 |
| Ø outside | 36 mm |
| Inner ring width | 25 mm |
| Manufacturer | swiing® revival parts |
| Bearing cage | Sheet steel cage ball-guided |
| Ø ball | 6.34 mm |
| Groove ring | No |
| Material | Steel |
| Bearing type | Ball ring |
| Width | 6.8 mm |
| Ball bearing closed | No |
| Area of application | Standard |
| Puch |
| Sachs |
| Zündapp Belmondo |
| Cilo |
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