1FL6044-1AF61-2LB1

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The Siemens 1FL6044-1AF61-2LB1 is a SIMOTICS S-1FL6 permanent-magnet synchronous servo motor designed for precise motion control in industrial automation applications. Rated at 0.75 kW with a nominal speed of 3,000 rpm, it delivers a rated torque of 2.39 Nm and a static torque of 3.50 Nm, with a maximum torque of 7.20 Nm for demanding dynamic movements.

This high-inertia motor is equipped with a 20-bit absolute encoder with 12-bit multiturn capability, supporting accurate position feedback in servo-driven machinery. It features a keyed shaft, natural cooling, IP65 degree of protection, and a rotatable angular connector for flexible installation. The integrated holding brake operates at 24 V DC and provides a holding torque of 3.50 Nm, making the unit suitable for controlled stopping and load holding in vertical or positioning axes.

With a shaft height of 45 mm, IM B5 mounting arrangement, thermal class B insulation, and compliance with CE and EAC standards, the 1FL6044-1AF61-2LB1 is well suited for use with compatible SINAMICS servo drive systems in packaging machinery, handling equipment, indexing systems, and general-purpose automation where reliable speed, torque, and positioning performance are required.
Specification Description
Manufacturer Siemens
Part number 1FL6044-1AF61-2LB1
Alternative part number 1FL60441AF612LB1
Product range SIMOTICS S-1FL6
Product type Permanent-magnet synchronous servo motor
Motor design High inertia motor for controlled motion applications
Rated power 0.75 kW / 1.02 hp
Rated speed 3,000 rpm
Maximum speed 4,000 rpm
Rated torque 2.39 Nm at 100 K
Maximum torque 7.20 Nm
Static torque 3.50 Nm
Rated current 2.1 A
Maximum current 6.3 A
Torque constant 1.20 Nm/A
Moment of inertia 5.700 kgcm²
Shaft height 45 mm
Shaft end Feather key shaft
Encoder type Absolute encoder, 20-bit single-turn with 12-bit multi-turn
Cooling method Natural cooling
Holding brake Integrated holding brake
Brake holding torque 3.50 Nm
Brake rated voltage 24 V DC ±10%
Brake rated current 0.90 A
Brake opening time 60 ms
Brake closing time 45 ms
Connection type Rotatable angular connector
Degree of protection IP65
Mounting arrangement IM B5, also suitable for IM V1 and IM V3 configurations
Radial runout tolerance Class N
Vibration severity grade Grade A
Thermal class Class B, 130 °C
Operating ambient temperature 0 to 40 °C
Maximum relative humidity 90% RH, non-condensing at 30 °C
Compliance CE and EAC
Net weight 6.30 kg

What type of component is this?

This is a SIMOTICS S-1FL6 permanent-magnet synchronous servo motor designed for precise motion control in industrial automation applications.

What is the rated power of this servo motor?

The motor has a rated power of 0.75 kW, equivalent to approximately 1.02 hp.

What is the rated speed?

The rated speed is 3,000 rpm, with a maximum speed of 4,000 rpm.

What torque values does this motor provide?

It provides a rated torque of 2.39 Nm, a static torque of 3.50 Nm, and a maximum torque of 7.20 Nm.

Does this motor include a holding brake?

Yes. The motor includes a holding brake with a holding torque of 3.50 Nm, a rated voltage of 24 V DC ±10 %, an opening time of 60 ms, and a closing time of 45 ms.

What type of encoder is fitted?

The motor is fitted with an absolute encoder rated at 20 bit single-turn plus 12 bit multi-turn, enabling accurate position feedback.

What is the motor inertia classification?

This model is classified as a high-inertia motor, making it suitable for applications where stable motion and load matching are important.

What shaft configuration does it use?

The motor uses a shaft end with a feather key, which helps provide a secure mechanical connection to compatible couplings, gearboxes or driven equipment.

What is the ingress protection rating?

The motor has an IP65 degree of protection, meaning it is protected against dust ingress and low-pressure water jets when correctly installed.

How is the motor cooled?

The motor uses natural cooling, so it does not rely on an integral fan for normal heat dissipation.

What are the operating ambient conditions?

The specified operating ambient temperature range is 0 to 40 °C, with relative humidity up to 90 % RH maximum, non-condensing at 30 °C.

What mounting arrangement is specified?

The motor is designed according to Code I with IM B5 mounting, including IM V1 and IM V3 mounting orientations.

What type of electrical connection does it use?

It uses an angular, rotatable connector, allowing the cable outlet direction to be adjusted during installation.

What is the approximate net weight?

The net weight is approximately 6.30 kg, although plate values and published data can vary slightly.

Which drive families is it commonly associated with?

This SIMOTICS S-1FL6 servo motor is commonly associated with SINAMICS V70 and V90 drive systems, subject to correct configuration and matching electrical ratings.

  • Precision motion control in automated machinery
  • Servo axis positioning for packaging equipment
  • Feed and indexing applications in production lines
  • Rotary positioning in assembly systems
  • Pick-and-place automation requiring accurate repeatability
  • Conveyor drive applications with controlled acceleration and deceleration
  • Material handling systems using synchronised motion
  • CNC and machine tool axis movement
  • Labelling, filling and handling machinery
  • Textile, printing and paper processing equipment
  • Robotics and handling units requiring compact servo performance
  • Industrial automation systems using SINAMICS V70 or V90 drives

This content has been produced using multiple sources. EU Automation takes no responsibility for the accuracy of this information. Always consult the original equipment manufacturer for the most up to date instructions and information.

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