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HydroRound™ Rotary Axis
(1.0 MB) |
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Introducing the HydroRound™, hydrostatic rotary bearing, featuring a self compensating restrictor design with industry leading accuracy and moment stiffness. The HydroRound™ is designed for our Nanoform® and Freeform® systems to perform both 3-axis tool normal diamond turning and parallel grinding, as well as high performance, 4 and 5-axis raster milling and grinding.
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Key Features
- Designed in collaboration with the Massachusetts Institute of Technology(MIT).
- Unique self compensating restrictor design contributes to improved moment stiffness (best in the industry).
- High stiffness both horizontal and vertical.
- Higher damping characteristics vs. air bearing designs.
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| Specifications |
Large H-Round (700 Series Machines) |
Small H-Round (250Ultra) |
| Table Top Size |
381mm (15") Ø |
190mm (7.5") Ø |
| Swing Capacity |
260mm (10.4") Ø (Nanoform® 700 Only) |
200mm (8") Ø |
| Travel |
Unlimited |
Unlimited |
| Load Capacity |
454 Kg. (1000 lbs.) |
455 Kg. (1000 lbs.) |
| Max. Speed |
10 RPM |
10 RPM |
| Motor Torque |
3 ft-lbs. |
3 ft-lbs. |
| Position Resolution |
.036 arc-sec. |
.036 arc-sec. |
| Radial Error Motion |
<0.1µm (4µ") @ 1" above table |
<0.1µm (4µ") @ 1" above table |
| Coning Error |
1.0nm/mm (1.0µ"/in.) |
1.0nm/mm (1.0µ"/in.) |
| Radial Stiffness |
525N/µm (3,000,000 lbs./in.) |
225N/µm (1,280,000 lbs./in.) |
| Axial Stiffness |
1750N/µm (10,000,000 lbs./in.) |
600N/µm (3,428,000 lbs./in.) |
| Moment Stiffness |
50N-m/arc-sec. (82 lbs.-in./µrad.) |
3.4N-m/arc-sec. (30 lbs.-in./µrad.) |
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