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Three-phase hybrid stepper motor series

Manufacturer catalogue image · Series illustration

Stepper motors

Three-phase hybrid stepper motor series

SYN-TRON logoSYN-TRONView manufacturer →
Phases
Three
Step Angle
1.2°
Series Holding Torque
0.45–45 N·m; model dependent
Power
Confirm configuration

Catalogue series · Exact configuration and availability confirmed by the manufacturer.

Three-phase hybrid steppers: compare the winding and speed curve, not just frame size

The manufacturer’s broad three-phase range contains different frame sizes and windings. For a concrete comparison, the July 2026 60(S) manual documents two 60 mm motors with the same mounting interface but different holding torque, rotor inertia, winding data and body length. Their numbers below apply to those complete designations, not every motor in the family.

Two 60(S) models that occupy different space and accelerate different inertia

C is 60BYG350CLS-SASSML-0562, catalogue code 062502. D is 60BYG350DLS-SASSML-0582, catalogue code 062535. Keep the complete designation on the purchase order; the shortened column labels are only for reading this comparison.

Selection datumC / 0562D / 0582
Holding torque 0.9 N·m 1.5 N·m
Detent torque 0.04 N·m 0.07 N·m
Static phase current 5.6 A 5.8 A
Phase resistance 0.70 Ω 0.68 Ω
Phase inductance 1.10 mH 1.36 mH
Rotor inertia 300 g·cm² 480 g·cm²
Motor mass 0.8 kg 1.3 kg
Body length L 56 mm 79 mm
Nominal step angle 1.2° 1.2°
Listed DC range 24–70 V 24–70 V

What the torque plot establishes—and what still needs a motion test

Holding torque is a stationary rating

The 0.9 and 1.5 N·m table entries are holding torque. Both published curves fall as pulse frequency rises. Do not specify a moving load at the holding rating and assume that torque remains available at the required running speed. Give the load torque, reflected inertia and acceleration time so the operating point can be checked against the correct curve.

The curves use 48 V and a 0.6° step setting

The two plots are explicitly marked 48 V DC and 0.6°. The motor table’s nominal step is 1.2°. At the plotted setting there are 600 commanded steps per revolution: 1 kHz corresponds to 100 r/min and 10 kHz to 1,000 r/min. These calculated command conversions explain the chart axes; they are not guarantees of achieved speed or position under load.

More holding torque also brings more rotor inertia

The D version increases rotor inertia from 300 to 480 g·cm² and adds 23 mm of body length. That matters in a frequently reversing axis, even if its 1.5 N·m holding value looks attractive. Compare the full move, including acceleration and settling, rather than selecting solely by the larger stationary torque number.

Match a three-phase stepper driver

The manual lists SD-30807 and SD-31007 as typical matching drivers and shows three motor leads, U, V and W. This is a driver-controlled stepper system, not a motor to connect directly to a three-phase mains supply. Agree the exact driver revision, current setting and DC supply before quoting. The 24–70 V table range does not mean that the 48 V curve is reproduced at every supply voltage.

For a replacement, check the front interface and the full suffix

Mounting and shaft dimensionsThe drawing shows a 60 mm square face, four 6 mm mounting holes on a 49.5 ±0.2 mm square pattern, a 36 mm locating register and an 8 mm smooth shaft extending 21 mm. The manufacturer requires location by the front register and alignment between motor and load shafts. Check the fit tolerances on the approved drawing; matching the four bolt holes alone is insufficient.
Lead identification and installation clearanceThe wiring table identifies black, brown and blue as U, V and W. The drawing shows a 500 mm lead length. Reserve room for the cable route and connector as well as the 56 or 79 mm body. Confirm commanded direction during commissioning; a mechanical fit does not prove that the machine’s previous direction setting is correct.
Custom variants are not interchangeable by appearanceThe naming key distinguishes low/high voltage class, single/double shaft, standard/extended shaft, smooth/keyed shaft, metric/inch dimensions and lead/connector termination. A Ver*.* suffix denotes a special customised version. Supply the old nameplate and installation drawing when replacing one; do not drop that suffix and assume the standard table defines it.
State the actual cabinet and ambient conditionsFor these two 60(S) models the manual specifies operating ambient 0 to 50 °C, humidity below 85% RH and class B insulation. Its 65 K maximum temperature-rise entry is not permission to ignore ambient or winding heating. Report duty cycle and mounting heat path, and obtain the thermal suitability of the chosen motor/driver pair for the machine.

CATALOGUE OVERVIEW

About this motor series

SYNTRON three-phase hybrid steppers use a 1.2-degree step angle. The manufacturer lists frame families from 57 through 130 and holding-torque ratings from 0.45 to 45 N·m across different models. These values describe the series envelope, not a single motor.

Use the model table to match phase current and winding characteristics to a compatible three-phase driver. Ask for the running torque at your target speed, shaft drawing and permissible acceleration; a larger holding-torque number alone does not establish suitability for a fast positioning axis.

Model / series reference: Three-phase hybrid

Published specifications

Specifications describe a series range; confirm which ratings apply together to the quoted model.

Phases
Three
Step Angle
1.2°
Series Holding Torque
0.45–45 N·m; model dependent
Power
Confirm configuration
Voltage
Confirm supply
Speed
Model dependent
Catalogue Type
Product series

Confirm mounting and shaft dimensions against the drawing for the quoted configuration.

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