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NEMA 8 Captive Acme Hybrid Stepper Linear Actuator 0.5A 38.2mm Stack Screw Lead 2mm(0.07874") Travel 19.5mm

NEMA 8 Captive Acme Hybrid Stepper Linear Actuator 0.5A 38.2mm Stack Screw Lead 2mm(0.07874") Travel 19.5mm
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Our Price:$75.79
Quantity:- +

Bulk Price:
Qty.Range(unit) Price(unit) Discount
5 $73.35 3%
10 $70.90 6%
50 $68.46 10%
100 $66.01 13%
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NEMA 8 Captive Acme Linear Stepper Motor 0.5A 38.2mm Stack Screw Lead 2mm(0.07874") Travel 19.5mm


This model is a Nema 8 Captive ACME screw linear stepper motor with a 38.2mm body length, 1.8 degree step angle and 0.5A rated current. It is integrated with a 3.5mm(0.1378") diameter, 19.5mm(0.7677) travel distance, the linear travel is 2mm(0.07874") per revolution. It has the characteristics of high performance, long life, low noise and high efficiency.


Electrical Specification

Manufacturer Part Number: 8C15S0504AC5-019RS

Motor Type: Captive

Step Angle: 1.8°

Holding Torque: 0.02Nm(2.83oz.in)

Rated Current/phase: 0.5A

Phase Resistance: 12ohms

Inductance: 4.5mH±20%(1KHz)


Physical Specification

Frame Size: 20 x 20mm

Body Length: 38.2mm

Travel Distance: 19.5mm(0.7677")

Lead Screw Diameter: Φ3.5mm(0.1378")

Lead/Step: 0.01mm(0.0003937")

Lead Travel/Revolution: 2mm(0.07874")

Number of Leads: 4

Lead Length: 300mm



A+ A- B+ B-
Red Red/White Green Green/White


Lead Screw End Machining


Anti-Backlash Nut


OYOSTEPPER provides anti-backlash nut for external lead screw linear actuator (except Size 34) and non-captive lead screw linear actuator (except size 24 and 34).

There should be a nominal backlash between lead screw and OYOSTEPPER standard plastic nut after millions of cycles. OYOSTEPPER guarantees few millions of cycles but physical backlash can be increased. To reduce or eliminate backlash, OYOSTEPPER provides spring pressure structure of anti-backlash nut.




According to application requirements, customer can easily choose encoders via index output or non-index type and thru output method as single ended or differential output.

Also various resolution can be chosen freely for easier and precise positioning.

All OYOSTEPPER standard encoders are optical and incremental. When you choose encoder, please carefully look into options especially size, resolution, index and output method.




Especially Vertical applications or holding motors from sudden power-off status, OYOSTEPPER standard power-off brakes for NEMA14, 17, 23, 24 and 34 sizes will be helpful to reduce concern of customers.


Wiring, Cabling and Connectors


Flying wire leads or connectors

Twisting wire leads

Heat shrink or expandable tubing

Cable housings


Teflon Coated Screw


If customer's applications require greaseless screw and nut combination, OYOSTEPPER offers teflon coated lead screw of stepper linear actuator.

Teflon coated lead screw stepper linear actuator enables it's longer life cycle and better thrust force generation against conventional SUS lead screw.

Teflon coating can be applied in the whole range of lead screw options in OYOSTEPPER and all types of linear actuators such as External, Non-Captive, and Captive.

In addition, Anti-backlash nut also can be combined with teflon coated screw too.

Wholesale stepper motors and wholesale stepper motor drivers online with guaranteed quality and competitive price at Oyostepper.com!

Prev: NEMA 34 Non-Captive Acme Linear Stepper Motor Actuator 5.5A 75mm Stack Screw Lead 6.35mm(0.25") Lead Length 300mm
Next: NEMA 8 Captive Acme Hybrid Stepper Linear Actuator 0.5A 38.2mm Stack Screw Lead 2mm(0.07874") Travel 38.2mm
Electrical Specification
Bipolar/Unipolar Bipolar
Inductance(mH) 4.5
Phase Resistance(ohm) 12
Rated Current (A) 0.5
Step Angle(deg.) 1.8
Linear Motor Type Captive
Physical Specification
Body Length(mm) 38.2
Frame Size(mm) Nema 08 (20 x 20)
Lead Length(mm) 300
Lead Screw Diameter(mm) 3.5
No. of Lead 4
Lead Travel/Revolution(mm) 2
Lead Travel/Step(mm) 0.01
IP Rating 40
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