Sleeper & Hartley
United States
Sleeper & Hartley is a legacy American maker of spring coilers and torsion winders; mid-century units remain in service and on the used market.
Models
Micro-Coiler
Series 721
Wire range: 0.46–2 mm
Spec comparison
| Type | Speed | |||
|---|---|---|---|---|
| Micro-Coiler | CNC spring coiler | – | 4 | – |
| Series 721 | Mechanical spring coiler | 0.46–2 mm | – | 300 pcs/min |
Specifications compiled from public manufacturer or dealer documentation; they vary by configuration and year. Always confirm with the manufacturer before deciding.
These machines are integrated with Springs3d Studio: pick one and design a spring that is compatible with its limits from the start.
Open in Springs3d StudioAbout Sleeper & Hartley
Sleeper & Hartley is a legacy American maker of spring coilers and torsion winders; mid-century units remain in service and on the used market.
Brand names, model names and logos belong to their respective manufacturers and are used for identification only. This catalog is independent and neither affiliated with nor endorsed by the manufacturers.