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A black and silver HIWIN servo motor with a cylindrical shaft, visible mounting holes, and electrical connectors on top, shown against a plain white background.

EM1 Series

EM1 Series AC Servo Motors

Rated Output
50 W - 2 kW (8 ratings)
Encoder
17-bit or 23-bit, incremental or absolute
Protection
IP67 (except shaft), 50 W - 750 W; IP65 (except shaft and connector), 1 kW - 2 kW
Supply
220 Vac, via E1 / E2 series drives

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EM1 Series AC Servo Motors are highly reliable closed-loop systems able to maintain high speed with low torque. Rated output runs from 50 W to 2 kW, with IP67 protection from 50 W to 750 W and IP65 from 1 kW to 2 kW, encoder resolution options of 17 bits or 23 bits, and optional brake and key. High servo control bandwidth allows for precise angular motor positioning, and the installation interface makes mounting quick and easy.

EM1 motors run from the E1 and E2 drive platforms, one guaranteed-compatible electronics stack for the whole axis. View Servo Drive E1 →

  • 6000 rpm

    Maximum speed of the 50 W - 750 W ratings

  • 8,388,608

    Pulses per revolution from the 23-bit encoder

  • 30 Nm

    Maximum torque of the 2 kW motor

Applications

  • Panels
  • Semiconductor
  • Lasers
  • PCB drilling
  • Machine tools
  • Measurement and inspection
  • Energy
  • Other automation industries

Motor ratings

Every rating is a 220 Vac motor matched to an E1 or E2 series drive; 50 W to 1 kW are medium inertia, and 1.2 kW and 2 kW are medium inertia, high speed. The letter after EM1 is the speed class: C models run 3000 rpm rated and 6000 rpm maximum, A runs 2000/3000 and D runs 2000/5000. The blank positions of the full ordering code take the brake, encoder, protection and shaft choices: EM1-C-M-05-2-B-E-R-A is a 50 W motor with holding brake, 23-bit incremental encoder, IP67 protection and plain round shaft.

Model Rated output Rated torque (Nm) Rated / max speed (rpm) Max torque (Nm) Configure
EM1-C-M-05 50 W 0.16 3000 / 6000 0.59 Configure ↗
EM1-C-M-10 100 W 0.32 3000 / 6000 1.18 Configure ↗
EM1-C-M-20 200 W 0.64 3000 / 6000 2.24 Configure ↗
EM1-C-M-40 400 W 1.27 3000 / 6000 4.44 Configure ↗
EM1-C-M-75 750 W 2.39 3000 / 6000 8.36 Configure ↗
EM1-A-M-1K 1 kW 4.77 2000 / 3000 14.3 Configure ↗
EM1-D-M-1A 1.2 kW 5.73 2000 / 5000 16 Configure ↗
EM1-D-M-2K 2 kW 9.55 2000 / 5000 30 Configure ↗

Part numbers & options

How a part number reads

EM1 - C - M - 05 - 2 - B - E - R - A (50 W, 3000/6000 rpm, holding brake, 23-bit incremental encoder, IP67, round shaft)

EM1
Series — EM1 AC servo motor
C
Rated / maximum speed — A 2000/3000 rpm · C 3000/6000 rpm · D 2000/5000 rpm
M
Inertia — M medium inertia
05
Rated output — 05 50 W · 10 100 W · 20 200 W · 40 400 W · 75 750 W · 1K 1 kW · 1A 1.2 kW · 2K 2 kW
2
Drive input voltage — 2 220 Vac
B
Holding brake — 0 without · B with holding brake
E
Encoder type — C 17-bit incremental · D 17-bit absolute · E 23-bit incremental · F 23-bit absolute
0
Reserved — 0 standard, IP65 (1 kW - 2 kW only) · R IP67 (50 W - 750 W only)
A
Motor shaft — A round without oil seal · B round with oil seal · C key and center tap without oil seal · D key and center tap with oil seal

The configurator assembles this number for you, with drawings and 3D CAD. Configure ↗

Encoder options

The EM1 brochure prints all four encoder codes: C 17-bit incremental, D 17-bit absolute, E 23-bit incremental, F 23-bit absolute.

  • C 17-bit incremental — 131,072 pulses per revolution
  • D 17-bit absolute
  • E 23-bit incremental — 8,388,608 pulses per revolution
  • F 23-bit absolute

Motor shaft

Round or keyed shafts, each with or without an oil seal; the keyed version includes a center tap.

  • A Round shaft — Without oil seal
  • B Round shaft with oil seal
  • C Key and center tap — Without oil seal
  • D Key and center tap with oil seal

Holding brake

  • 0 Without holding brake
  • B With holding brake — DC 24 V input; static friction torque 0.32 to 10 Nm by frame

Protection

  • 0 Standard, IP65 — 1 kW - 2 kW only; totally enclosed, self-cooled, IP65 except shaft and connector
  • R IP67 — 50 W - 750 W only; totally enclosed, self-cooled, IP67 except shaft

Downloads

Other AC Servo Motors & Drives

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How buying works

Spec it in the configurator: drawings, 3D CAD, and a quote to follow.

HIWIN series are configured to your application, not bought off the shelf. Start from your loads and speeds if you are still choosing a size.

Configure Open the Sizing Tool

Rather talk it through? Request a quote from an application engineer.