Motorized Integrated Vacuum Preloaded Dovetail
The DOV150150-MXXX-2C is the motorized evolution of the Dovetail-Series, combining precision dovetail linear air bearing guides with a fully integrated drive system for turnkey ultra-precision motion. Configured with dual, independently motorized air bearing carriages, each equipped with its own dedicated encoder, the system is engineered for applications requiring smooth, vibration-free, and maintenance-free linear movement, delivering nanometer-level positioning with reliable repeatability and advanced motion control.
Manufactured from premium aircraft-grade materials, the Dovetail-Series guide features a porous graphite air bearing surface that ensures uniform air distribution and optimal stiffness. The dual-carriage, vacuum-preloaded architecture maintains non-contact operation while increasing rigidity and moment load capacity, providing exceptional accuracy and eliminating stick-slip or mechanical wear.
Each carriage incorporates a factory-aligned motor and encoder, enabling synchronized or independent motion profiles within a single platform. This plug-and-play configuration simplifies installation, reduces integration time, and expands system flexibility. The rail platform length is fully customizable to support a wide range of travel requirements. Like its non-motorized counterpart, the system includes a pre-tensioned brake function on each carriage for stable positioning under load, now combined with precise, controllable motion through the integrated drive system.
Key Features
Motorized, fully integrated dovetail linear air bearing system
Dual carriages, each individually motorized and encoder-equipped
150 mm × 150 mm carriage platform with vacuum-preloaded carriages
Fully customizable rail platform length
Frictionless, non-contact motion with zero wear and zero stick-slip
Factory-aligned motors and encoders for plug-and-play installation
Independent or synchronized carriage motion capability
Pre-tensioned brake function on each carriage for stable positioning under load
Porous graphite bearing surface for uniform stiffness and vibration damping
Ideal for precision positioning, scanning, metrology, and research applications
Performance Note: Load, stiffness, flow rate, and moment values are based on testing at 60 PSI supply pressure. Actual performance may vary depending on shaft quality, mounting method, air supply stability, and application conditions.
Title | Specification |
Motion | |
Part # | DOV150150-MXXX-2C |
Input Pressure | 20 – 100 PSI (0.14 – 0.69 MPa) |
Flatness | .0005 mm or .00002 in |
Active Axes | X |
Travel | 50 mm/100 mm/200 mm/300 mm or Custom Travel |
Local Straightness | .25 μm per 25 mm travel |
Maximum error | 2 μm per 1000 mm travel |
Positioning | |
Encoder Resolution | 50 nanometers per count |
Integrated Sensor | Linear Enconder |
Mechanical | |
Carriage Size | 150 mm x 300 mm |
Assembly Height | 55 mm |
Guidebar Length | Custom |
Carriage Weight | 1.3 kg (2.9 lb)(Each) 2.6 kg (5.8 lb)(Both) |
Total Weight (100 mm travel) | 3.35 kg (7.8 lb) |
Z-axis load capacity | 704 lb (3130 N) |
Y-axis load capacity | 608 lb (2704 N) |
Pitch | 285 lbs-in (32 N-m) |
Roll | 324 lbs-in (37 N-m) |
Yaw | 140 lbs-in (16 N-m) |
Y Stiffness | 670 N/μ |
Z Stiffness | 730 N/μ |
Ironless Motor | Peak force: 36 N Continuous: 10N |
Pneumatic | |
Air Flow | 17 nlpm |
Parameter | Motor 1 | Motor 2 | Motor 3 |
Continuous force | 9.5 N | 21 N | 31 N |
Peak force | 66.5 N | 147 N | 217 N |
Continuous current, RMS | 1.98 A | 1.86 A | 1.96 A |
Peak current, stall | 13.9 A | 13 A | 13.7 A |
Force constant | 4.27 N/A | 10.77 N/A | 14.95 N/A |
Back EMF | 3.9 V/(m/s) | 9.21 V/(m/s) | 12.9 V/(m/s) |
Resistance, line-line | 2.2 Ω | 5.5 Ω | 7.7 Ω |
Inductance, line-line | 0.22 mH | 0.55 mH | 0.84 mH |
Coil weight | 0.035 kg | 0.088 kg | 0.11 kg |
Coil Length | 33 mm | 69 mm | 93 mm |