Motors

Brushless DC Servo Motors

MotorsOverviewA servo motor can be any type of motor coupled to a sensor for position feedback, usually an incremental encoder. A sophisticated controller (or drive) is required that can monitor position and speed against target values and adjust accordingly. This...

Closed Loop Stepper Motors

MotorsOverviewClosed loop stepper motors offer the low speed torque of a stepper with the accuracy of a servo motor when used with a suitable drive. They consist of a conventional stepper motor with an attached precision encoder for position feedback, eliminating...

Open Loop Stepper Motors

Overview

Open loop stepper motors (sometimes called step motors or stepping motors) provide low cost motion control without the need for feedback devices such as encoders. However, if greater accuracy or step-loss detection is required, it is possible to use encoders with stepper motors and ORLIN also has a range of preconfigured closed loop stepper motors available.

Typical number of steps per revolution is 200, but this may be increased by microstepping for greater positioning resolution and operating smoothness. With the appropriate drive, microstepping can increase the resolution up to 51200 steps/rev.

ORLIN Technologies offers a range of stepper motors in various sizes. We also offer matching drives and programmable controllers for all models and integrated drives for most. An integrated motor is one where the drive is built into the unit which reduces wiring, takes up less space and eases installation.

Open Loop Stepper Motors – Models:

■ SM2832 – NEMA11
■ SM4247 – NEMA17
■ SM5776 – NEMA23
■ SM8680 – NEMA34
■ SM86118 – NEMA34 (long)
■ SM110201 – NEMA42

STEPPER MOTOR	HOLDING TORQUE KGFCM (NM)	MAX CURRENT PER PHASE (amp)	DIMENSIONS (mm)	RESISTANCE PER PHASE (ohm)	INDUCTANCE PER PHASE (mh)	ROTOR INERTIA (G*CM²)
SM2832	0.4 (0.04)	0.95	28 x 28 x 32	2.8	1	9
SM4247	4.4 (0.43)	1.68	42 x 42 x 48	1.65	2.8	68
SM5776	18.9 (1.85)	2.8	56 x 56 x 76	1.13	3.6	480
SM8680	46 (4.51)	4.2	86 x 86 x 80	0.75	3.4	1400
SM86118	87 (8.53)	6.0	86 x 86 x 118	0.6	6.5	2700
SM110201	280 (27.45)	8.0	110 x 110 x 201	0.67	12	16200

SM2832 – NEMA11

Specifications:

• Maximum holding torque: 0.43kgf*cm (0.042 N*m)
• Maximum current per phase: 0.95A
• Phase resistance: 2.8 Ohm
• Phase inductance: 0.8 mH
• Rotor inertia: 0.9 g*cm2
• Weight: 0.11 kg

Dimensions:

SM2832 - NEMA11 Stepper Motor Dimensions

Wiring:

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SM4247 – NEMA17

Specifications:

• Maximum holding torque: 4.4 kgf*cm (0.43 N*m)
• Maximum current per phase: 1.68 A
• Phase resistance: 1.65 Ohm
• Phase inductance: 2.8 mH
• Rotor inertia: 68 g*cm2
• Weight: 0.35 kg

Dimensions:
SM4247 - NEMA17 Stepper Motor Dimensions

Wiring:
SM4247 - NEMA17 Stepper Motor Wiring

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SM5776 – NEMA23

Specifications:

• Maximum holding torque: 18.9 kgf*cm (1.85 N*m)
• Maximum current per phase: 2.8A
• Phase resistance: 1.13 Ohm
• Phase inductance: 3.6 mH
• Rotor inertia: 480 g*cm2
• Weight: 1 kg

Dimensions:

SM5776 - NEMA23 Stepper Motor Dimensions

Wiring:

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SM8680 – NEMA34

Specifications:

• Maximum holding torque: 45 kgf*cm (4.4 N*m) – bipolar wiring.
• Maximum current per phase: 4.2A
• Phase resistance: 0.8 Ohm
• Phase inductance: 3.5 mH
• Rotor inertia: 1400 g*cm2
• Weight: 2.3 kg

Dimensions:

SM8680 - NEMA34 Stepper Motor Dimensions

Wiring – Serial:

SM8680 - NEMA34 Stepper Motor Wiring Serial

Wiring – Parallel:

SM8680 - NEMA34 Stepper Motor Wiring Parallel

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SM86118 – NEMA34 (long)

Specifications:

• Maximum holding torque: 85 kgf*cm (8.3 N*m) – bipolar wire connecting.
• Maximum current per phase: 6.0A
• Phase resistance: 0.5 Ohm
• Phase inductance: 6.0 mH
• Rotor inertia: 2700 g*cm2
• Weight: 3.8 kg

Dimensions:

SM86118 - NEMA34 (long) Stepper Motor Dimensions

Wiring:

SM86118 - NEMA34 (long) Stepper Motor Wiring

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SM110201 – NEMA42

Specifications:

• Maximum holding torque: 300 kgf*cm (29 N*m)
• Maximum current per phase: 8.0A
• Phase resistance: 0.67 Ohm
• Phase inductance: 11 mH
• Rotor inertia: 16200 g*cm2
• Weight: 11.7 kg

Dimensions:

SM110201 - NEMA42 Stepper Motor Dimensions