Our RTA Series tilting 2-axis rotary tables turn a 3-axis machining center into a 4+1 or full 5-axis machine. Both the rotating and tilting axes are driven by roller gear cam mechanisms instead of worm gears, delivering zero backlash, high rigidity and long-term accuracy for complex parts in aerospace, automotive, mold and medical manufacturing. Made in Taiwan, six table sizes from Ø100 to Ø220 mm.
Key Features
- Zero backlash: preloaded roller gear cam drive eliminates gear clearance on both axes.
- High precision: 0.001° minimum increment; tilting-axis repeatability 4 arc-sec.
- High speed: rotating axis up to 62.5 rpm for fast positioning and shorter cycle times.
- High rigidity & torque: rolling contact resists vibration and deformation under heavy cutting.
- Low thermal deformation: stable accuracy over long machining runs.
- Low wear: rolling instead of sliding contact keeps accuracy for years without backlash adjustment.
Roller Gear Cam vs. Worm Gear
| Roller gear cam (RTA Series) | Conventional worm gear | |
|---|---|---|
| Backlash | Zero (preloaded) | Present; increases with wear |
| Contact type | Rolling | Sliding |
| Rigidity | High | Medium |
| Wear / maintenance | Very low; no backlash re-adjustment | Regular adjustment needed |
| Long-term accuracy | Stable | Degrades over time |
Model Dimensions
| Model | Table diameter (mm) | Table surface height (mm) | Center hole | Key slot width | Net weight* (kg) |
|---|---|---|---|---|---|
| RTA-100VDE | Ø100 | 215 | Ø42H7 | – | 128 |
| RTA-125VDE | Ø125 | 240 | Ø42H7 | 12H7 | 128 |
| RTA-170VDE | Ø170 | 240 | Ø42H7 | 12H7 | 128 |
| RTA-200VDE | Ø200 | 245 | Ø42H7 | 12H7 | 140 |
| RTA-210VDE | Ø210 | 245 | Ø42H7 | 12H7 | 140 |
| RTA-220VDE | Ø220 | 245 | Ø42H7 | 12H7 | 140 |
Common Specifications
| Item | Rotating axis | Tilting axis |
|---|---|---|
| Swing angle | 360° | -90° ~ +110° |
| Minimum increment | 0.001° | 0.001° |
| Max. rotation speed (motor 3000 min⁻¹) | 62.5 rpm | 50 rpm |
| Gear ratio (FANUC) | 1/48 | 1/60 |
| Indexing accuracy | 20 arc-sec | 15 arc-sec |
| Repeatability | 8 arc-sec | 4 arc-sec |
| Servo motor – FANUC | αiF 2 / βiS 4 | αiF 4+B / βiS 8+B |
| Servo motor – Mitsubishi | HG75S | HG104S+B |
| Servo motor – Siemens | 1FK7034 | 1FK7060+B |
| Max. load on table (horizontal / tilted) | 30 kg / 30 kg | |
| Center height (vertical) | 150 mm | |
| Through hole | Ø40H7 | |
| Allowable axial load (clamped) | 620 kgf | |
| Max. output torque (clamped) | 22 kgf·m | |
| Allowable bending torque (clamped) | 30 kgf·m | |
| Max. moment of inertia | 0.1 kgf·m² |
*Net weight excludes servo motors. Specifications may change without notice; please confirm with our latest catalog before ordering.
Applications
- 5-axis and 4+1 machining on vertical machining centers
- Aerospace and automotive components
- Molds, dies and cutting tools
- Medical devices, optics and precision instruments
- Electronics and general precision parts
Download Catalog
Full specifications, dimension drawings and options for the RTA series and our complete roller gear cam rotary table range (RTC, RTD, RDS/RDH, RDX, RTA/RTAD, RTB).
Request a Quote
Tell us your machine model, CNC control (FANUC, Mitsubishi, Siemens or other) and workpiece size and weight. We will recommend the right RTA model and quote with motor and interface options.