26
IMS-MN-LMDA42C_A.pdf
Mechanical Data
LMD CANopen
External Linear Actuator Dimensions
The following graphic shows the external linear actuator dimensions of the
NEMA 17 (42 mm) [inches (mm)].
4 x M3x0.5 THREAD
x0.15 MIN DEEP
0.079 (2.01)
1.450 (36.83)
3.449
(87.60)
Ø 0.866 +0/-0.002
(Ø 22.00 +0/-0.05)
o 1.220
(o 30.99)
o 1.662
(o 42.21)
2.058
(52.27)
Nut
3.0 to 18.0
(76.2 to 457.2)
0.25
(6.35)
0.25
(6.35)
Screw end options:
smooth end (shown),
metric, UNC, or none
2.78 (70.7) max
3.39 (86.0) max
For back chassis dimensions and connector layout, refer to “Rotary Dimensions” on page 25.
Calculating Screw Length:
Screw Length = Mounting Surface Plate Thi Nut Desired Stroke Length
Calculating Available Stroke Length:
Stroke Length = Screw Length – Nut Length – Mounting Surface Plate Thickness
The following graphic shows the linear screw dimensions and pitch information.
Screw Lead and Nut Specifications
Screw
Travel
Per rev
Per full step
A
in (mm) 0.25 (6.35)
0.00125 (0.03175)
B
0.125 (3.175)
0.00063 (0.0160)
C
0.063 (1.60)
0.00031 (0.00787)
0.25
(6.35)
Screw end options (see details)
Straightness 0.002 per inch
0.25
(6.35)
3.0 to 18.0
(76.2 to 457.2)
Threaded end
Screw end details
Smooth end
None
Metric end:
M4 x 0.7mm
thread to within 0.03"/
0.76 mm of shoulder
UNC end:
#8-32 UNC-2A thread
to within 0.03"/
0.76 mm of shoulder
Ø 0.1967" ±0.001
Ø 5 mm ±0.003
A
B
F
A
B
F
Nut outline
Ø D
Ø E
Ø BCD
inches
(mm)
A
B
D
E
F
BCD
drag
load
limit
torque
General
purpose
0.50
(12.7)
0.75
(19.1)
1.0
(25.4)
0.14
(3.6)
0.14
(3.6)
0.15
(3.81)
0.75
25 lbs
(11 kg)
5 lbs
(2 kg)
(19.1)
0.75
(19.1)
free
wheeling
Anti-
backlash
0.50
(12.7)
0.9
(22.86)
1.0
(25.4)
0.18
(4.57)
1-to-3 oz-in /
0.7-2.1 Ncm
