150 Series AC Servo Motor

Q: What is the difference between the 150 Series and the 130 Series servo motor?

The 150 Series covers higher power — 3.0 to 5.5 kW — while the 130 Series tops out around 2.3 kW. Both share the same encoder type, IP65 rating and Class F insulation. Choose 150 Series when the axis needs more than 15 N·m continuous torque or more than 3 kW shaft power at 2000 rpm.

Q: What driver works with a 150 Series motor?

Any three-phase AC servo drive rated for 220 V line input and 24 A continuous phase current. The motor uses a 2500 PPR photoelectric encoder output in A/B/Z differential form plus U/V/W commutation signals — the standard interface used by most industrial servo drives. Wiring diagrams are supplied with each shipment.

Q: Can I get a longer shaft or a custom flange?

Yes, both are available on production orders. Shaft length, keyway size, flange bolt pattern and connector type can all be machined to drawing. A dimensioned quote is returned within the same working day when you send your drawing or target equipment model.

Q: How is motor quality verified before shipping?

Every motor is tested on the bench for back-EMF waveform, three-phase resistance balance, insulation resistance at 500 V DC, no-load current, no-load speed and vibration. The measurement sheet is printed with the motor serial number and travels in the crate. Motors that fail any parameter are reworked or scrapped, never shipped.

Q: What is the warranty and certification?

18 months from shipment against manufacturing defects, backed by an ISO 9001:2015 certified quality system. The longer warranty reflects the serialized test record attached to every unit and a field failure rate below 0.3% over the past three years. CE and RoHS declarations are available on request.

Q: What is the price range for a 150 Series servo motor?

List pricing typically ranges from USD 280 to USD 850 per unit depending on power rating and options. Price on request — factory-direct pricing applies on bulk orders above 20 units. Brake (Z1 or Z2), custom shaft and cable assemblies are quoted per drawing. Send the model, quantity and delivery port, and a formal quotation is returned the same working day.

Q: How does a 150 Series servo motor compare to a stepper motor?

A 150 Series servo motor runs closed-loop with a 2500 PPR encoder, while a stepper motor runs open-loop with no position feedback. For axes that must hold position under varying load, resume after a fault without re-homing, or reach 5.5 kW at 2000 rpm continuously, servo is the correct choice. Steppers are lower cost for light-duty indexing where torque requirements never vary.

150 Series AC servo motors cover 3.0–5.5 kW with rated torque from 15 Nm to 27 Nm, rated speed 2000–2500 rpm. Peak torque up to 54 Nm. IP65 sealed housing, Class F insulation, 2500 PPR photoelectric encoder. Suited to CNC, printing, packaging and machine tool axes. OEM shafts, brakes and cables available.

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Product Description

150 Series AC Servo Motor — 3.0 to 5.5 kW Servo Drive Motors

A 150 Series AC servo motor is a three-phase permanent magnet synchronous servo motor built on a 150 mm frame with a 2500 PPR photoelectric encoder and IP65 sealing. Five stock ratings cover 3.0 kW to 5.5 kW at 2000–2500 rpm, with rated torque from 15 Nm to 27 Nm and peak torque up to 54 Nm. Every motor ships with a serialized test sheet covering back-EMF, phase resistance, insulation and no-load current.

ISO 9001:2015Certified Factory 18-MonthManufacturing Warranty SerializedTest Sheet Per Unit Factory-DirectSince 2006

Model Selector

150ST-M15025 3.8 kW 2500 rpm · 15 Nm 150ST-M15020 3.0 kW 2000 rpm · 15 Nm 150ST-M18020 3.6 kW 2000 rpm · 18 Nm 150ST-M23020 4.7 kW 2000 rpm · 23 Nm 150ST-M27020 5.5 kW 2000 rpm · 27 Nm

Model breakdown: 150ST-M15025 = 150 frame · ST sine wave drive · M photoelectric encoder · 15.0 N·m rated torque @ 2500 rpm

Full Technical Data

Parameter	M15025	M15020	M18020	M23020	M27020
Rated power	3.8 kW	3.0 kW	3.6 kW	4.7 kW	5.5 kW
Rated line voltage	220 V	220 V	220 V	220 V	220 V
Rated current	17 A	14 A	17 A	21 A	24 A
Rated speed	2500 rpm	2000 rpm	2000 rpm	2000 rpm	2000 rpm
Rated torque	15 N·m	15 N·m	18 N·m	23 N·m	27 N·m
Peak torque	30 N·m	30 N·m	36 N·m	46 N·m	54 N·m
Rotor inertia	3.88×10⁻³	3.88×10⁻³	4.6×10⁻³	5.8×10⁻³	6.8×10⁻³
Weight	15.2 kg	15.2 kg	17.2 kg	21 kg	23.5 kg

Common Specifications Across the Range

Encoder 2500 PPR photoelectric encoder, M code

Insulation grade Class F

Ingress protection IP65

Drive waveform Sine wave (ST code)

Working temperature −20 °C to +40 °C

Working humidity <90% RH, non-condensing

Brake option Magnetic brake (Z1) or permanent magnet brake (Z2)

Feedback options Photoelectric encoder (M) or resolver on request

150 Series vs. 130 Series — Which One Fits Your Axis?

Item	130 Series	150 Series
Rated power	0.4 – 2.3 kW	3.0 – 5.5 kW
Rated torque	1.3 – 15 N·m	15 – 27 N·m
Frame size	130 mm	150 mm
Encoder	2500 PPR	2500 PPR
IP / Insulation	IP65 / Class F	IP65 / Class F
Best fit	Light axes, small gantry, pick-and-place	Heavy feed axes, machine tool spindles, packaging lines

Where the 150 Series Runs

CNC machine toolsFeed axes, spindle positioning, tool changers

Printing equipmentWeb tension, register control, cutting

Packaging linesFilling, sealing, cartoning stations

Food and beverageHigh-precision filling and capping

Chemical dosingMetering pumps and mixing drives

RoboticsJoint actuation on medium-payload arms

Outline and Mounting Dimensions

All dimensions in mm. L is motor length without brake. L1 is motor length with magnetic brake.

Torque	Speed	A	B	C	D	E	F	G	H	I	J	T	M	N	P	S	L	L1
15 N·m	2500 rpm	4	45	0.5	⌀28	58	8	31	198	14	M8	5	⌀165	⌀130	150	⌀11	230	303
15 N·m	2000 rpm	4	45	0.5	⌀28	58	8	31	198	14	M8	5	⌀165	⌀130	150	⌀11	230	303
18 N·m	2000 rpm	4	45	0.5	⌀28	58	8	31	198	14	M8	5	⌀165	⌀130	150	⌀11	248	321
23 N·m	2000 rpm	4	45	0.5	⌀28	58	8	31	198	14	M8	5	⌀165	⌀130	150	⌀11	279	351
27 N·m	2000 rpm	4	45	0.5	⌀28	58	8	31	198	14	M8	5	⌀165	⌀130	150	⌀11	302	375

Winding and Encoder Terminals

Winding socket

U (red)	Pin 1
V (yellow)	Pin 2
W (blue)	Pin 3
PE (yellow-green / black)	Pin 4

Encoder socket

5V	Pin 2	0V	Pin 3
B+	Pin 4	Z−	Pin 5
U+	Pin 6	Z+	Pin 7
U−	Pin 8	A+	Pin 9
V+	Pin 10	W+	Pin 11
V−	Pin 12	A−	Pin 13
B−	Pin 14	W−	Pin 15
PE	Pin 1

How to Read the Model Code

150 Frame number (60, 80, 110, 130, 150, 180)

ST Sine wave drive

M Feedback type — M = photoelectric encoder

15025 First 3 digits = rated torque × 1 N·m; last 2 digits = rated speed × 100 rpm. Example: 15025 = 15.0 N·m at 2500 rpm

Z1 Z1 = magnetic brake; Z2 = permanent magnet brake; no suffix = no brake

Cross-Reference to Common Servo Brands

Raydafon	Mitsubishi HG-SR class	Yaskawa SGM7G class	Delta ASD-A3 class	Power / Torque
150ST-M15020	HG-SR302	SGM7G-25A	ASD-A3-2523	3.0 kW / 15 N·m
150ST-M15025	HG-SR352	SGM7G-30A	ASD-A3-3023	3.8 kW / 15 N·m
150ST-M18020	HG-SR352	SGM7G-30A	ASD-A3-3023	3.6 kW / 18 N·m
150ST-M23020	HG-SR502	SGM7G-44A	ASD-A3-4523	4.7 kW / 23 N·m
150ST-M27020	HG-SR502	SGM7G-55A	ASD-A3-5523	5.5 kW / 27 N·m

Cross-reference is provided for general comparison only and refers to class-equivalent products. Raydafon is not affiliated with, authorized by, or endorsed by Mitsubishi Electric, Yaskawa Electric, or Delta Electronics. Confirm the exact equivalent against your drive manual before substitution.

Ordering and Delivery

MOQ 5 units per model. Samples from 1 piece. Lead time 5–10 working days on stock models; 20–30 days on brake or custom shaft variants. Payment T/T, L/C at sight. Shipping FOB Ningbo / Shanghai, DDP on request. Motors ship with a serialized test sheet covering back-EMF, phase resistance, insulation resistance and no-load current. Custom cables and connectors are quoted per drawing through our inquiry page.

Buyer Questions

What is the difference between the 150 Series and the 130 Series servo motor?

The 150 Series covers higher power — 3.0 to 5.5 kW — while the 130 Series tops out around 2.3 kW. Both share the same encoder type, IP65 rating and Class F insulation. Choose 150 Series when the axis needs more than 15 N·m continuous torque or more than 3 kW shaft power at 2000 rpm.

What driver works with a 150 Series motor?

Any three-phase AC servo drive rated for 220 V line input and 24 A continuous phase current. The motor uses a 2500 PPR photoelectric encoder output in A/B/Z differential form plus U/V/W commutation signals — the standard interface used by most industrial servo drives. Wiring diagrams are supplied with each shipment.

Can I get a longer shaft or a custom flange?

Yes, both are available on production orders. Shaft length, keyway size, flange bolt pattern and connector type can all be machined to drawing. A dimensioned quote is returned within the same working day when you send your drawing or target equipment model.

How is motor quality verified before shipping?

Every motor is tested on the bench for back-EMF waveform, three-phase resistance balance, insulation resistance at 500 V DC, no-load current, no-load speed and vibration. The measurement sheet is printed with the motor serial number and travels in the crate. Motors that fail any parameter are reworked or scrapped, never shipped.

What is the warranty and certification?

18 months from shipment against manufacturing defects, backed by an ISO 9001:2015 certified quality system. The longer warranty reflects the serialized test record attached to every unit and a field failure rate below 0.3% over the past three years. CE and RoHS declarations are available on request. Our process is documented on the Quality Assurance page.

What is the price range for a 150 Series servo motor?

List pricing typically ranges from USD 280 to USD 850 per unit depending on power rating and options. Price on request — factory-direct pricing applies on bulk orders above 20 units. Brake (Z1 or Z2), custom shaft and cable assemblies are quoted per drawing. Send the model, quantity and delivery port, and a formal quotation is returned the same working day.

How does a 150 Series servo motor compare to a stepper motor?

A 150 Series servo motor runs closed-loop with a 2500 PPR encoder, while a stepper motor runs open-loop with no position feedback. For axes that must hold position under varying load, resume after a fault without re-homing, or reach 5.5 kW at 2000 rpm continuously, servo is the correct choice. Steppers are lower cost for light-duty indexing where torque requirements never vary.

Request a Quote Send model, quantity, shaft and brake spec View Full Servo Range 60 / 80 / 90 / 110 / 130 / 150 / 180 frame sizes

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Luotuo Industrial Area, Zhenhai District, Ningbo City, China
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