Size 8 [20mm] Stepper Ball Screw Linear Actuators

The Size 8 [20mm] External Stepper Ball Screw Linear Actuator.

Various screw end machining and encoder options are available.

Size 8 [20mm] Stepper Ball Screw Linear Actuators

Motor Characteristics

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Model No.Rated Voltage[V]Current[A]Resistance[Ω]Inductance[mH]Lead Wire No.Motor Length "L"[mm]
8E21052.550.55.11.5427.2
8E22054.40.58.82.7438.1

Ball Screw Specification

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Ball screw type 0401 0402
Ball Size Ф0.8 Ф0.8
Number of thread 1 1
Thread direction Right
Shaft root dia. Ф3.3
Number of circuit 3.7×1 2.7×1
Shaft, nut material SCM415H
Surface hardness HRC58~62
Anti-rust treatment Anti-rust oil
Grade C7
Nut sizeABCDHWXPosition accuracyTotal run outAxial playDynamic load[N]Static load[N]
BS0401234171115173.4±0.050.12≤0.03560790
BS0402234191115173.4±0.050.12≤0.03420570

* The unit of Position accuracy, Total run out and Axial play is [mm].

Dimensional Drawings

Speed Thrust Curves

speed thrust curves image

Options

Screw End Machining
opt screw end machining
Encoder Option
EK1 Encoder images
EK1 Encoder images

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Resolution(CPR) 100 108 120 125 128 200 250 256 300 360 400 500 1000 512 720 800
Single ended output 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Differential output A B C D E F G H I J K L M N O P
EK5 Encoder images
EK5 Encoder images

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Resolution(CPR) 360 500 512 1000 1024 2000 2048
Single ended output 0 1 2 3 4 5 6
Differential output A B C D E F G
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