Festo EMMT Series Hybrid Stepper Motor 48V, 0.25Nm Torque, 1.8 °, 42 mm Frame, 5 mm Shaft

RS stock no.:: 851-601
Mfr. Part No.:: EMMT-ST-42-S-RM
Manufacturer:: Festo

Festo EMMT Series Hybrid Stepper Motor 48V, 0.25Nm Torque, 1.8 °, 42 mm Frame, 5 mm Shaft

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Subtotal (1 unit)*

R 7 685,47

(exc. VAT)

R 8 838,29

(inc. VAT)

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Ready to ship from 16 November 2026

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Units	Per unit
1 +	R 7,685.47

*price indicative

RS stock no.:: 851-601
Mfr. Part No.:: EMMT-ST-42-S-RM
Manufacturer:: Festo

Specification

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Festo
	Sub Type	Hybrid
	Product Type	Stepper Motor
	Step Angle	1.8°
	Holding Torque	0.25Nm
	Voltage	48V
	Mount Type	Panel Mount
	Frame Size	42 mm
	Shaft Diameter	5mm
	Current Rating	1.8A
	Shaft Length	24mm
	IP Rating	IP40
	Number of Pole Pairs	50
	Width	42mm
	Depth	42mm
	Resistance Per Phase	2.1Ω
	Standards/Approvals	CE, cULus, IEC 60034, RCM, RoHS, UL E342973
	Output Speed	600rpm
	Series	EMMT

	Select all
	Brand Festo
	Sub Type Hybrid
	Product Type Stepper Motor
	Step Angle 1.8°
	Holding Torque 0.25Nm
	Voltage 48V
	Mount Type Panel Mount
	Frame Size 42 mm
	Shaft Diameter 5mm
	Current Rating 1.8A
	Shaft Length 24mm
	IP Rating IP40
	Number of Pole Pairs 50
	Width 42mm
	Depth 42mm
	Resistance Per Phase 2.1Ω
	Standards/Approvals CE, cULus, IEC 60034, RCM, RoHS, UL E342973
	Output Speed 600rpm
	Series EMMT

COO (Country of Origin):: BG

Festo EMMT Series Stepper Motor, 42mm Frame Size, 0.25Nm Holding Torque - EMMT-ST-42-S-RM, Numeric Part Number: 8156163

This stepper motor is a Compact hybrid device designed for precise position control in industrial and automation contexts. It operates at 48V and delivers controlled rotational motion suitable for applications requiring defined step increments and moderate torque, while meeting international safety and materials directives.

Features and Benefits:

• 1.8° step angle enables high positional accuracy and repeatability
• 1.8A current rating supports sustained torque for motion tasks
• 0.25 Nm holding torque maintains shaft position under load
• 600rpm output speed allows consistent rotational throughput
• 2.1 Ω resistance per phase improves current distribution and control

Applications

• Suitable for CNC Axis positioning requiring accurate steps
• Ideal for pick-and-place mechanisms with moderate torque needs
• Used with rotary indexing tables demanding steady speed
• Can be used for valve actuation in automated systems
• Suitable for laboratory instruments needing repeatable motion

What shaft specifications affect coupling choices?

The shaft measures 5mm in diameter with a 24mm protrusion so users can select matching couplings and set screws for secure mechanical linkage.

Which environmental protection and mounting constraints apply?

The enclosure rating is IP40 and the unit is designed for panel-mount installation, indicating protection against solid objects but not against liquids.

What electrical and magnetic configuration governs stepping behaviour?

It is a hybrid design with 50 pole pairs and a resistance of 2.1 Ω per phase, which together influence step resolution, phase current control and thermal dissipation.

Which approvals and standards relate to safety and interoperability?

It holds CE, RoHS, cULus and RCM recognitions and aligns with IEC 60034 requirements for rotating electrical machines.