EDH0199En2041 — 12/18
2
MFA Series Miniature Linear Stages
2.0 —
Description
Designed for space-limited applications and compact multi-axis
assemblies, MFA Series linear stages supply very high resolution, single-
axis translation in a low-cost, motorized package. Typical applications for
this stage are fiber optic alignment, laser diode research, bio-medical
applications and inspection systems.
MFA linear stages are available in two versions: The MFA-CC with a DC-
motor, features an integrated gear-box and a motor mounted high
resolution 2,048 cts/rev rotary encoder. The high-resolution position
feedback and low-friction mechanical design ensures ultra-smooth motion
with 100 nm sensitivity. The DC motor supplies an optimized output torque
that permits the use of a lower ratio step-down gear allowing for faster
motion with higher reliability and lower backlash. Hence, the MFA-CC is the
recommended choice for applications that require small incremental
motion with high dynamic speed range and good repeatability. The MFA-PP
and MFA-PPD stepper motor versions are more economical solutions for
less demanding applications.
Travel limit switches prevent bearing damage from accidental over-travel.
MFA stages feature an all-steel construction that provides a higher
stiffness-to-weight ratio and lower thermal expansion compared to
aluminum designs. The result is superior performance in a smaller
footprint. The smooth motion of the MFA linear stages is further
accentuated by Newport's proprietary double-row linear ball bearing
design with bearing ways that are directly machined into the structural
frame of the stage. Compared to other solutions that use commercial
bearings, MFA linear stages have a higher load capacity and stiffness with
low pitch and yaw errors.
Another benefit of Newport's integrated bearing ways is the availability of
4 widely spaced mounting holes for base mounting and XY-assemblies.
This provides better stress distribution and allows for more rigid multi-
axis combinations than other designs that provide only line contact with 2
mounting holes.
2.1
Design Details
Base Material Stainless Steel
Bearings Double row linear ball bearings
Drive Mechanism Backlash compensated leadscrew
Drive Screw Pitch 0.5 mm
Reduction Gear MFA-CC: 1:14
MFA-PP: 1:43
Feedback MFA-CC: Motor mounted rotary encoder; 2,048 cts/rev
MFA-PP: None
Limit Switches Optical switches
Origin Uses motor side limit for homing, typically <5 mm repeatability
Cable Length MFA-PP, MFA-PPD & MFA-CC: 3 m
MFA-CCV6: 1.5 m
