A&I Navel R4 K-Series is a false-twist element for open-end rotor spinning. The navel sits at the rotor outlet and imparts the false twist that stabilises the spun yarn as it is drawn off; the bore geometry — entry diameter D1 and throat diameter D2 — together with the surface finish influence yarn evenness, hairiness and running stability.
Catalog variants:
| Type | Reference | Speed (rpm) | Bore D1 (mm) | Bore D2 (mm) | Compatible machines |
|---|---|---|---|---|---|
| R4 K04 | 52550751 | 90,000 | 11 | 4 | SD / D1 / D2 |
| R4 K05 | 52550755 | 90,000 | 11 | 5 | SD / D1 / D2 |
| R4 K06 | 52550759 | 90,000 | 11 | 6 | SD / D1 / D2 |
| R4 K44 | 52550763 | 90,000 | 11 | 4 | SD / D1 / D2 |
| R4 K46 | 52550767 | 90,000 | 11 | 6 | SD / D1 / D2 |
Confirm the exact variant by machine model and current part number — send your RFQ for matching. Pricing on request.
