The RV120PEBV6 High Torque Vacuum Rotation Stage provides high-precision angular positioning accuracy combined with high load capacity. This 120 mm diameter stage features a Full-step stepper drive equipped with a reduction gear providing higher torque. All RV stages are constructed of tool steel, with rotation accuracy ensured by ground bearing surfaces. A double row of preloaded bearings allows for high off-center loads in a reduced footprint. The single monolithic design offers improved stiffness without compromising dynamic performance. Precise rotation is ensured by a precision ground and hardened worm gear. A rotary encoder mounted on the worm gear shaft provides 0.001° position feedback resolution.
Due to the various feed-through configurations and preferences of customers, the cable supplied with the stage is not vacuum compatible.
Can be ordered with a vacuum compatible 25pin SubD connector.
| Model | RV120PEBV6 |
|---|---|
| Travel Range | 360 ° |
| Resolution | 0.001 ° |
| Minimum Incremental Motion | 0.001 ° |
| Uni-directional Repeatability, Guaranteed | 0.002 ° |
|
Bi-directional Repeatability, Guaranteed | 0.004 or ± 0.002 ° |
| Absolute Accuracy, Guaranteed | 0.01 ° or ± 0.005 ° |
| Maximum Speed | 1 °/s |
| Wobble, Guaranteed | 20 or ± 10 µrad |
| Eccentricity, Guaranteed | 4 or ± 2 µm |
| MTBF | 20,000 h |
| Vacuum Compatibility | 10-6 hPa (7.5*10-7 Torr) |
| Maximum Torque (Mz) | 10 Nm |
| Maximum Inertia (Iz) | 70 kg.m2 |
| Normal Load Capacity (Cz) | 900 N |
| Base Material | Stainless Steel |
| Uni-directional Repeatability | 0.002 ° |
| Bearings | Double row ball bearings |
| Drive Mechanism | Ground worm gear with self compensating preload |
| Feedback | Worm mounted rotary encoder, 4,000 pts/rev, Index pulse |
| Drive Type | Full Step Drive Stepper |
| Limit Switches | Optical, at ± 170, can be disabled for continuous rotation (except HAT & HAHLT versions) |
| Motor | UE41PP |
| Reduction Gear | Reduction gear before encoder on some versions (please contact Newport for details) |
| Thread Type | M4 |
| Transversal Stiffness (kα) | 1.5 µrad/Nm |
| Worm Gear Ratio | 1:90 |
| Origin | Optical |
| Cable Length | 3 m |
| Off-Center Load Equation (Q) | Qh= Cz / (1 + D/40), Qv= Cz / (2 x (1 + D/40)), D= off-center distance in mm |
| Weight | 14.3 lb ( 6.5 kg) |
Qh= Cz / (1 + D/40), Qv= Cz / (2 x (1 + D/40))
D=Cantilever distance in mm;
Transversal Stiffness kα=1.5µrad/Nm