Ultra-High-Capacity Roller Screw (URS)
The URS roller screws are a variant of SRS designs offered in bigger sizes range and with larger lengths of the nut, named as the Ultra-High-Capacity Standard Roller Screws. The URS is designed for demanding applications with heavy loads and long service needs. By optimizing the assembly, the number of contacts and the threads, this design is provided with loads ratings up to 65% over the SRS range. The URS is available from range Ø60 mm to Ø210 mm for the screw with various leads and nut types with flange options.
This solution offers best power density with its larger and robust design and is ideal when you have to manage heavy loads or severe duty cycles.
Description of the URS, the ultra-high-capacity roller screw
| Type of nut | cylindrical (C), Flanged and centered(F), Flanged and non-centered(P) |
| Lead | range from 15 to 50 for standard designs |
| Nominal Diameter | range from Ø60 to Ø210 for standard designs |
| External Diameter | range from Ø32 to Ø270 for standard designs |
| Flanged Diameter | range from Ø166 to Ø530 for standard designs |
| Length | range from 171 to 570 for standard roller screws |
| Materials | hardened steel, stainless steel |
| Hardness | 58-62 HRc (650- 750HV) |
| Lubrication | grease, oil |
| Loads | axial bidirectional |
| Dynamic capacity | up to 55% increase compared to traditional, existing designs |
| Static capacity | up to 60% increase compared to traditional, existing designs |
| Stiffness | extremely high |
| Resistance to shock | very good |
| Coatings | under request |
| Sealing | under request |
| Maintenance | very reduced |
| Contamination | design has been optimized to limit any internal contamination and wear to extend lubricant and total service life to the maximum level. |
| Parts | customizable |
