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MIL17 - Integrated Stepper Motor Linear Actuator

 
Linear stepper motors can dramatically reduce cost and save space. There is no coupling, no additional bearing support and no assembly work required. This not only reduce cost but also reduce failure rate due to the less number of components and more simple construction. In applications with small load ratings a linear guide is also not required. The special design and material of the nut secure long life operation.

Below versions can be delivered
  • Captive linear actuator with built-in guider for linear movements. Moving part do not rotate.
  • Non-Captive linear actuator with nut inside motor. Linear moving part can rotate so it should be fixed.
  • External linear actuator. Nut are mounted on lead screw.
  • Rolled ball screw.
On request

 


 

Motor Type 1 or 2 stack Nut Type Pitch [y] Stroke Travel length Connector
MIL171/2SEy - xxxx66z External plastic nut See below table max. 350 mm Stroke - Nut Length (13.4 mm) Radial (top side)
MIL171/2SNy - xxxx66z Non-captive See below table max. 350 mm Stroke - Motor Length Radial (top side)
MIL171/2SBy - xxxx66z Ball screw 1,2,5 mm/rev max. 350 mm Stroke - Nut Length
Radial (top side)
MIL171/2SCy - xxxx66z Captive See below table max. 63.5 mm Stroke Radial (top side)

Notice for external nut versions:
Anti-backlash nut in plastic and Teflon coated lead screw are also available. Optional can rolled or ground ball screw be delivered in selected pitch e.g. 1mm/rev or 5mm/rev. Please ask JVL for more information.
 
Lead Code [y] Travel Per Rev.*
[mm] (inch)
Force
[N] (lbs.)
Force (double stack)
[N] (lbs.)
Screw Dia.
[mm] (inch)
0 0.6096 (0.024) 720 (161.9) 900 (202.3) 6.35 (0.25)
2
1 (0.039)

6.35 (0.25)
B 1.2192 (0.048) 550 (123.6) 830 (186.6) 6.35 (0.25)
D 1.27 (0.05) 550 (123.6) 850 (191.1) 6.35 (0.25)
F 1.5875 (0.0625) 550 (123.6) 810 (182.1) 6.35 (0.25)
J 2.4384 (0.096) 370 (83.2) 600 (134.9) 6.35 (0.25)
K 2.54 (0.1) 340 (76.4) 540 (121.4) 6.35 (0.25)
L 3.175 (0.125)

6.35 (0.25)
M 4.0 (0.157)

8.00 (0.31)
5 4.8768 (0.192)

5.56 (0.22)
Q 4.8768 (0.192) 230 (51.7) 380 (85.4) 6.35 (0.25)
S 6.35 (0.25) 150 (33.7) 230 (51.7) 6.35 (0.25)
T 8.0 (0.315)

8.00 (0.31)
U 8.4667 (0.33) 120 (27) 200 (45) 6.35 (0.25)
W 9.7536 (0.384) 90 (20.2) 150 (33.7) 6.35 (0.25)
Y 12.7 (0.5) 6.35 (0.25)
*Based on 200 step/rev motor. Divide with 200 to get travel per step. If JVL driver/controller with 1600step/rev
are used divide with 1600 to get travel/step.

Size 17 Captive (C), External nut (E), Ball screw (B) Non captive (N)
Axial load Max 250N * -
Axial play (Endplay) Max 0.1 mm * -
Radial load 0 N ** 0 N
Radial play 0 mm 0 mm
Recommend load limit Max 900N Max 900N
* We don´t use wave washer and we applied pre-load to the bearings. So the axial play is very small, it comes from the mechanical deform when there is axial load, it should be less than 0.1mm.
** For the motor with screw shaft, there should be no radial load on the screw, otherwise the shaft will be bend and affect the linear accuracy.
 
 
 
 
 
Normally the lifetime will typical be as following but will depends on load, force, acceleration, speed, temperature and many other factors.
Nut Type External Plastic External Anti-backlash Non-captive Ball Screw
Lifetime
(in cycles)
3.000.000 3.000.000 3.000.000 10.000.000

 
Standard motors are Class B rated for maximum temperature of 130 °C. Standard protection grade IP42. Motor can also be delivered as a 6 wire unipolar with 30% less force. Other travel per step, special nut and mechanical shaft dimensions/length can also be delivered. Weight and inertia depend upon shaft length. All measures in mm. All electrical tolerances 10%.

Dimensions
 
Nema17 - External nut

Nema17 - Internal nut
Coming soon
Coming soon
(download)

(download)
 
Nema17 - Captive

Coming soon
(download)
 
Force vs Speed curves
 
Nema17 1 stack Force vs Speed

Nema17 2 stack Force vs Speed





(download)

(download)
 
 
 

DETAILED
 


 

DOWNLOAD
  • DATASHEET
  • BROCHURE
  • USER MANUAL
 
 


JVL A/S Bregnerødvej 127 DK-3460 Birkerød Denmark
Tel: +45 4582 4440 Fax: +45 4582 5550 E-mail: jvl@jvl.dk
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