Company Information
E-mail		[email protected]
Mobile		+8615980777398
Whatsapp		+8615980777398
WeChat		15980777398

Siemens 1FK7063-5AF71-1KG5 Servo Motor: Technical Specifications, Product Description, Applications, Advantages, and Recommended Alternatives

1. Product Overview

The 1FK7063-5AF71-1KG5 is a model designation associated with the SIMOTICS S-1FK7 family of industrial servo motors. This family is designed for precision motion control in automated machinery, production equipment, positioning systems, and other industrial applications requiring controlled speed, torque, and movement.

A servo motor is different from a conventional electric motor in that it is typically operated as part of a closed-loop control system. A compatible servo drive regulates the motor’s electrical supply according to the commanded motion profile and, where applicable, feedback from an encoder.

This arrangement allows the motor to accelerate, decelerate, change direction, and reach defined positions under controlled conditions.

The 1FK7 family is commonly used in applications where repeatability, dynamic response, and reliable integration with industrial automation systems are important.

Technical identification note: The complete specifications of the exact 1FK7063-5AF71-1KG5 configuration cannot be independently verified here. The information below therefore separates general characteristics of the 1FK7 motor family from configuration-specific ratings that require confirmation. Exact torque, speed, encoder type, brake configuration, overall dimensions, and weight should not be inferred from a similar model number.

2. Brand and Product Series

2.1 Product Series Characteristics

The SIMOTICS S-1FK7 family is designed for applications requiring controlled motor movement, precise positioning, and integration with industrial servo drives.

The family includes different motor sizes, winding configurations, feedback devices, shaft arrangements, and brake options. These differences allow engineers to select a motor that suits the electrical and mechanical requirements of a particular machine.

The 1FK7063 designation identifies a motor in the 63 mm shaft-height class. The remaining characters in the ordering code identify the specific configuration and should not be ignored when selecting a replacement.

2.2 Understanding the Complete Model Number

The complete ordering code 1FK7063-5AF71-1KG5 is the most important identifier for procurement and maintenance.

When comparing this motor with another 1FK7 model, do not assume that a similar part number guarantees identical performance or compatibility.

The following items should be checked before purchase:

• Rated torque and rated speed.
• Winding and electrical characteristics.
• Encoder type and feedback interface.
• Holding brake availability and specifications.
• Shaft geometry and coupling compatibility.
• Mounting flange and installation dimensions.
• Protection rating.
• Motor weight and connector clearance.

These checks are especially important when replacing an existing motor without changing the original machine design.

---

3. Detailed Technical Parameters

The following table provides the main technical values associated with the identified motor configuration and the corresponding 1FK7063 motor platform.

Values that depend on the exact suffix, installation, or operating conditions are marked for confirmation rather than treated as universal specifications.

3.1 Rated Speed and Operating Speed

The rated speed of 3,000 rpm is a useful reference when selecting the motor for an industrial application.

It does not mean that the motor must always operate at that speed. A servo drive can control the motor over an appropriate operating range, subject to the motor’s torque curve, electrical supply, drive limits, and mechanical constraints.

The maximum speed values should be treated as limits rather than as recommended continuous operating speeds.

For example, an application requiring frequent acceleration and deceleration may place greater demands on the motor than an application that operates at a relatively constant speed.

3.2 Rated Torque and Static Torque

The rated torque of 7.3 Nm represents the specified continuous operating capability under the stated thermal conditions.

The static torque value of 11.0 Nm refers to a different operating condition and should not be interpreted as a guarantee of continuous torque at every speed or ambient temperature.

When selecting a motor, engineers should calculate the torque required throughout the entire operating cycle.

This includes acceleration, deceleration, steady movement, stopping, and periods when the motor must resist external forces.

3.3 Maximum Torque and Maximum Current

The maximum torque of 35.0 Nm and maximum current of 28.0 A are limiting values associated with the corresponding motor data.

They should not be used as normal continuous operating ratings.

The duration for which high torque can be maintained depends on the motor’s thermal characteristics, the drive’s current limits, and the machine’s operating cycle.

A suitable servo drive must be selected to support the required operating range without exceeding the motor’s permissible limits.

3.4 Dimensions and Weight

The 63 mm shaft height is a useful mechanical reference, but it does not provide the complete external dimensions.

The overall length, flange dimensions, shaft extension, mounting-hole arrangement, and connector clearances must be checked against the mechanical drawing for the exact model.

The approximate weight of 12.8 kg is useful for preliminary handling and machine-layout calculations. The exact net weight should be confirmed for the complete ordering configuration.

For installation design, also account for the weight of cables, mounting hardware, couplings, and any attached transmission components.

---

4. Product Introduction

The 1FK7063-5AF71-1KG5 is associated with an industrial servo motor platform developed for applications that require accurate movement, controlled speed, and reliable torque delivery.

Its permanent-magnet synchronous motor design is suitable for closed-loop motion control, where the servo drive adjusts electrical current according to the commanded motion and feedback available from the motor.

This type of motor is commonly considered for automated machinery, production equipment, positioning axes, and mechanical systems that require repeatable movement.

The 1FK7 platform offers a range of motor configurations, allowing engineers to select an appropriate combination of mechanical size, torque, speed, feedback, and mounting arrangement.

4.1 Permanent-Magnet Synchronous Motor Design

A permanent-magnet synchronous motor uses permanent magnets in its rotor and electrically energized windings in its stator.

When controlled by a compatible servo drive, the motor can produce regulated torque and follow a commanded speed or position profile.

This makes the motor useful for machinery that must repeatedly move between defined positions, synchronize with other axes, or change speed according to a production sequence.

Compared with a simple fixed-speed motor arrangement, a servo system provides greater flexibility in controlling movement.

4.2 Integration with Industrial Motion Control Systems

The motor is intended to operate as part of a wider motion control system.

A typical installation includes a servo motor, a compatible servo drive, a motion controller, power and feedback cables, and the mechanical equipment being driven.

The controller generates movement commands, while the drive regulates the motor’s electrical operation.

Where feedback is available, the control system uses position or speed information to manage movement and correct errors according to the configured control strategy.

The exact feedback interface for the 1KG5 variant must be verified before selecting the drive or replacement cables.

4.3 Compact Motor Format

The 63 mm shaft-height designation identifies a relatively compact motor frame.

This format can be useful in machines where installation space is limited or where several motor-driven axes must be arranged within a single enclosure.

A compact motor can simplify machine layout, but the complete assembly dimensions must still include the connector space, cables, coupling, mounting hardware, and any attached transmission.

4.4 Controlled Torque and Speed

The motor’s torque and speed characteristics allow engineers to evaluate its suitability for a particular motion profile.

The rated torque is particularly relevant to continuous operation, while peak and limiting values must be evaluated separately for acceleration and other transient demands.

The actual motion performance depends on the complete drive system and the mechanical load.

4.5 Industrial Integration

The 1FK7 family is designed for integration into industrial automation equipment.

Depending on the complete motor configuration, installation requirements may include specific mounting hardware, feedback cables, connectors, drive parameters, and commissioning procedures.

Correct integration helps ensure that the motor performs as intended and that the machine can operate reliably throughout its required production cycle.

---

5. Main Product Advantages

5.1 Precise Motion Control

A servo motor can provide controlled movement when paired with an appropriate drive and feedback system.

This is useful in applications where a machine must position components accurately, repeat a programmed movement, or synchronize with other axes.

Examples include automated assembly equipment, packaging machines, positioning tables, and selected machine-tool axes.

5.2 Responsive Acceleration and Deceleration

Servo systems can respond rapidly to changes in commanded torque and speed when the motor, drive, and mechanical system are properly matched.

This can help improve machine cycle times in applications involving frequent starts, stops, and changes of direction.

The actual acceleration capability depends on the load inertia, transmission ratio, available drive current, speed, and mechanical limitations.

5.3 Suitable for Automated Production Equipment

The 1FK7 family is intended for industrial motion control and can be incorporated into automated production machinery.

Its application flexibility makes it relevant to equipment that requires controlled positioning or coordinated motion.

The exact model must still be checked against the required torque, speed, mechanical interface, and control architecture.

5.4 Compact Installation

The 63 mm shaft-height format can help reduce the space needed for a motor installation.

This may be beneficial in machinery containing several positioning axes or in equipment where available space is limited.

The complete motor length and mounting dimensions should be checked before assuming that the motor will fit into an existing assembly.

5.5 Defined Electrical and Mechanical Characteristics

The availability of rated torque, current, speed, inertia, and other engineering values allows the motor to be evaluated systematically.

This supports better motor selection than relying only on nominal power.

For demanding applications, the complete torque-speed curve and the permissible thermal operating range should be reviewed.

5.6 Flexible Application Design

Different configurations within the 1FK7 family provide options for feedback, shaft design, and braking arrangements.

This can be useful when designing new equipment or selecting a motor for a particular mechanical installation.

However, configuration differences also mean that model numbers must be checked carefully before a replacement is ordered.

5.7 Potential for Reduced Auxiliary Equipment

A naturally cooled motor can avoid the need for a separate motor cooling circuit in applications where natural cooling is sufficient.

This may simplify installation and reduce the number of auxiliary components.

The thermal design must still account for the machine enclosure, ambient temperature, mounting conditions, and operating cycle.

5.8 Support for Repeatable Production Processes

Servo-controlled movement helps machines repeat motion sequences according to defined commands.

This can improve consistency in tasks such as material positioning, product transfer, and automated assembly.

The achieved repeatability depends on the motor, feedback device, drive tuning, mechanical stiffness, transmission backlash, and overall machine design.

---

6. Product Applications

The following applications are representative of the 1FK7 servo motor family. The suitability of the exact 1FK7063-5AF71-1KG5 must be evaluated against the actual load and control requirements.

6.1 CNC Machine Tools

CNC machines use servo-controlled axes to position cutting tools, tables, and other mechanical components.

A suitable servo motor can provide controlled movement according to the programmed tool path.

Potential applications include:

• Machine-table positioning.
• Tool movement.
• Auxiliary rotary axes.
• Automated fixture adjustment.
• Coordinated movement between multiple axes.

The selection process should account for acceleration, continuous torque, positioning accuracy, mechanical stiffness, and the forces encountered during machining.

6.2 Packaging Machinery

Packaging equipment frequently requires repeated and synchronized movement.

Servo motors can operate feeding mechanisms, indexing systems, positioning assemblies, and other moving components.

Potential applications include:

• Packaging material feeding.
• Product indexing.
• Position adjustment.
• Automated sealing mechanisms.
• Label-handling systems.
• Coordinated movement between packaging stations.

The required motor performance depends on the production rate, cycle time, load inertia, and torque needed during acceleration and stopping.

6.3 Automated Assembly Lines

Automated assembly systems often move components between workstations or position parts for processing.

Servo motors may drive transfer mechanisms, positioning tables, insertion systems, or automated fixtures.

Their principal advantages in these applications are controlled movement and the ability to repeat programmed motion sequences.

Where the process requires force-sensitive insertion or exceptionally tight tolerances, additional sensors and specialized control functions may be required.

6.4 Pick-and-Place Equipment

Pick-and-place systems move components from a pickup location to a placement location.

A servo motor may control a rotary arm, transfer axis, or other positioning mechanism.

Important design factors include payload, acceleration, cycle frequency, transmission efficiency, and the inertia of the complete moving assembly.

The motor must be selected to satisfy both peak torque requirements and continuous thermal requirements.

6.5 Material Handling Systems

Material handling machinery uses controlled motion to transport or position products and components.

Possible applications include automated positioning axes, transfer mechanisms, workpiece handling equipment, and selected conveyor indexing systems.

The torque requirement depends on the moving mass, friction, acceleration, transmission ratio, and external forces.

For applications involving vertical movement, the brake arrangement and machine safety system must also be evaluated.

6.6 Industrial Robotics

Servo motors are used in many industrial motion systems, including certain robotic mechanisms and auxiliary positioning axes.

The 1FK7 family may be relevant where its mechanical format and performance characteristics match the application.

However, robot joints can impose specific requirements involving inertia, mass, backlash, gearbox compatibility, thermal capacity, and safety.

The motor should therefore be evaluated against the requirements of the complete robotic mechanism rather than selected on the basis of rated power alone.

6.7 Printing and Converting Equipment

Printing and converting machines often require synchronized motion between rollers, feeders, and processing mechanisms.

Servo motors may be used for material feeding, positioning, tension-related movement, and other controlled axes.

The important selection factors include speed range, acceleration, torque variation, synchronization, and the characteristics of the material being processed.

6.8 General Industrial Automation

The motor family may also be suitable for auxiliary motion functions in general industrial machinery.

Examples include fixture positioning, controlled mechanical adjustment, automated workpiece transfer, and other applications requiring a defined motion profile.

For every application, the final selection should be based on the required torque, speed, duty cycle, mechanical dimensions, and drive compatibility.

---

7. Five Recommended Models from the Same Series or Related Configurations

The following five models are related to the 1FK7063 motor platform. They are useful candidates to consider when searching for a replacement or comparing different encoder and mechanical configurations.

The models have similar base designations, but their suffixes identify important differences.

7.1 Comparison Table

Important: The ratings shown for related configurations are reference values for the corresponding motor platform. Encoder-related performance reductions, mechanical differences, and suffix-specific specifications must be checked before substituting one model for another. The dimensions shown as requiring a drawing are intentionally not estimated.

7.2 Model 1: 1FK7063-5AF71-1KG5

This is the reference model.

It belongs to the 1FK7063 motor platform, with a nominal rated speed of 3,000 rpm and rated torque of 7.3 Nm under the stated thermal conditions.

The most important step when selecting this model is to establish the exact feedback and mechanical configuration associated with the complete ordering code.

Recommended for: Existing machinery designed around this exact motor configuration.

Before ordering a replacement, compare the nameplate, feedback connection, shaft, mounting arrangement, and brake requirements with the original installation.

7.3 Model 2: 1FK7063-5AF71-1EA0

This related configuration uses an absolute EnDat encoder with 2048 increments per revolution and does not include a holding brake.

Its nominal speed and torque ratings are associated with the same basic 1FK7063 platform.

The absence of a brake is a critical distinction for applications involving vertical movement or loads that could move when the motor is not energized.

Recommended for: Applications that require the corresponding absolute feedback configuration but do not require an integrated holding brake.

7.4 Model 3: 1FK7063-5AF71-1EB0

This related configuration uses an absolute EnDat encoder and includes a holding brake.

Its nominal performance figures are similar to those of the 1FK7063 platform, but the brake and shaft configuration should be checked against the requirements of the machine.

Recommended for: Applications requiring absolute position feedback and an integrated holding brake, provided the remaining mechanical and electrical interfaces match.

7.5 Model 4: 1FK7063-5AF71-1EB2

This configuration includes an absolute EnDat encoder and a holding brake.

The configuration is associated with a fitted-key shaft and specific protection characteristics.

These differences matter when the motor is connected to a gearbox, pulley, coupling, or other transmission component.

Recommended for: Machinery designed for the corresponding shaft, encoder, and brake configuration.

7.6 Model 5: 1FK7063-5AF71-1FH0

This configuration uses an absolute encoder with a Drive-CLiQ interface and includes a holding brake.

The feedback interface is an important selection criterion because it must be compatible with the installed servo drive and control system.

Recommended for: Applications designed around the corresponding Drive-CLiQ feedback arrangement.

The model should not be treated as a direct replacement for an EnDat-based configuration unless the complete control system supports the substitution.

---

8. Five Additional Popular Models and Product Families to Consider

In addition to the related 1FK7063 configurations, the following five models or product families are worth considering for industrial automation, servo positioning, and general motion control.

These recommendations cover different frame sizes and application requirements. The specifications of each family vary according to the complete ordering code, so the table identifies which parameters can be stated reliably and which require confirmation.

8.1 Recommended Model Comparison Table

The last four entries are product families rather than complete orderable motor numbers. Their specific performance figures cannot be established from the family designation alone.

8.2 Model 1: 1FK7063-5AF71-1KG5

Main advantage: Maintaining the existing motor configuration.

The reference model is the logical starting point when replacing an existing motor or maintaining spare-parts inventory for an established machine.

The original mounting arrangement, drive interface, and mechanical transmission can often be retained when the replacement has the same complete specification.

Nevertheless, the exact encoder, brake, shaft, and dimensional characteristics must be confirmed before purchase.

8.3 Model 2: 1FK7080 Series

Main advantage: An alternative motor frame for applications requiring a different performance range.

The 1FK7080 family is worth investigating when the machine requires a different combination of torque, speed, or mechanical dimensions.

A larger frame may provide a different range of performance characteristics, but the actual benefit depends on the selected winding and motor configuration.

Before selecting a specific model, compare continuous torque, peak torque, rated speed, rotor inertia, mounting dimensions, weight, and compatible drive requirements.

8.4 Model 3: 1FK7083 Series

Main advantage: Additional options within the same general servo motor family.

This family can be considered when the original motor’s performance or mechanical arrangement does not meet the requirements of a new or modified machine.

The selection should be based on the application’s torque-speed requirements and the complete motor specification.

A motor with greater torque capacity may be beneficial for a heavy load, but excessive motor size can also increase inertia, cost, and installation space.

8.5 Model 4: 1FK7103 Series

Main advantage: An option to investigate for more demanding motion requirements.

The 1FK7103 family may be considered when evaluating larger-frame servo motor configurations.

The suitability of a particular model depends on the required continuous torque, peak torque, speed range, acceleration, feedback system, and mounting dimensions.

A larger frame should not automatically be interpreted as a better solution. The selected motor must match the machine’s motion profile and available drive capacity.

8.6 Model 5: 1FT7 Series

Main advantage: An alternative industrial synchronous servo motor family.

The 1FT7 family is worth evaluating when the application permits a different motor configuration or when a new machine is being designed.

The main comparison points are torque capability, rated speed, mechanical dimensions, cooling requirements, encoder interface, and compatibility with the selected drive system.

This family should be treated as an alternative engineering option rather than a guaranteed direct replacement for the 1FK7063-5AF71-1KG5.

---

9. Engineering Considerations Before Selecting a Replacement

Choosing the correct servo motor requires an assessment of the complete machine rather than a comparison of model numbers alone.

The following considerations are particularly important for the 1FK7063-5AF71-1KG5.

9.1 Mechanical Compatibility

The replacement motor must fit the machine’s mounting arrangement and connect correctly to the driven mechanism.

The following dimensions should be checked against the original installation:

• Motor flange dimensions.
• Shaft height.
• Shaft diameter and extension.
• Keyway or plain-shaft arrangement.
• Overall motor length.
• Mounting-hole locations.
• Connector positions.
• Required cable clearance.

The nominal 63 mm shaft height is useful for initial identification, but it is insufficient to establish complete mechanical compatibility.

9.2 Electrical Compatibility

The motor and servo drive must be compatible in terms of winding characteristics, current requirements, voltage, feedback, and control configuration.

A replacement motor may have similar power and speed ratings but still be unsuitable for the original drive.

The complete model number and motor nameplate should be checked before connecting the replacement.

9.3 Encoder Compatibility

Encoder compatibility is especially important when replacing one 1FK7 configuration with another.

The encoder interface determines how position information is communicated to the drive.

An absolute encoder, incremental encoder, and Drive-CLiQ configuration are not automatically interchangeable.

The drive must support the installed feedback device and the corresponding motor configuration.

9.4 Brake Compatibility

If the original motor uses a holding brake, the replacement should provide the required brake functionality or an appropriately engineered alternative.

The brake must be evaluated for holding torque, supply voltage, release timing, and suitability for the application.

For vertical axes, the brake arrangement and machine safety functions require particular attention.

9.5 Torque and Speed Requirements

The motor should be selected according to the torque required throughout the motion cycle.

Continuous torque determines whether the motor can operate without excessive thermal loading, while peak torque influences acceleration and short-duration load changes.

Maximum speed must also be considered alongside the available torque at that speed.

A motor that meets the rated torque requirement at one speed may not provide the same torque at a higher operating speed.

9.6 Dimensions and Weight

The complete motor drawing should be used when determining whether the motor fits into an existing machine.

The exact net weight should be confirmed before finalizing structural supports or handling procedures.

For an existing machine, matching the original dimensions and weight can reduce mechanical modification, but electrical and control compatibility must still be checked.

---

10. Maintenance and Reliability

Correct installation and regular inspection can help maintain reliable servo motor operation.

10.1 Electrical Connections

Power and feedback connectors should be checked for damage, contamination, loose connections, and cable deterioration.

Poor connections may cause intermittent faults, communication problems, overheating, or unexpected drive shutdowns.

10.2 Temperature Monitoring

Motor temperature should be monitored according to the installation’s operating requirements.

Excessive heating can result from overloading, unsuitable duty cycles, insufficient heat dissipation, mechanical resistance, or incorrect drive settings.

Repeated overheating should be investigated rather than addressed solely by reducing the frequency of fault resets.

10.3 Mechanical Alignment

The motor shaft should be correctly aligned with the connected transmission.

Misalignment may increase vibration and mechanical loading, potentially reducing bearing and coupling service life.

The mounting flange, shaft, coupling, and driven mechanism should be installed according to their respective mechanical requirements.

10.4 Drive Fault Diagnosis

Repeated overcurrent, position-following, encoder, or thermal faults should be investigated systematically.

The cause may originate in the motor, drive, cables, feedback device, mechanical transmission, or load.

Reviewing the fault history alongside the machine’s operating conditions can help identify the underlying problem.

10.5 Spare-Parts Management

When maintaining an installed machine, record the complete motor ordering code, nameplate values, feedback interface, brake arrangement, and mechanical dimensions.

This information makes it easier to identify a suitable replacement and reduces the risk of ordering a similar-looking but incompatible motor.

---

11. Final Product Summary

The 1FK7063-5AF71-1KG5 belongs to the SIMOTICS S-1FK7 family of industrial synchronous servo motors.

Its principal reference characteristics are a 3,000 rpm rated speed, 7.3 Nm rated torque, approximately 2.3 kW optimum operating power, and a 63 mm nominal shaft height.

The motor family is designed for applications requiring controlled movement, repeatable positioning, and integration into industrial motion control systems.

Potential applications include CNC machinery, packaging equipment, automated assembly, material handling, positioning mechanisms, and other industrial automation equipment.

The principal advantages of this motor platform include its servo-controlled operation, defined torque and speed characteristics, compact frame format, and availability of different feedback and mechanical configurations across the product family.

For related alternatives, the 1FK7063-5AF71-1EA0, 1FK7063-5AF71-1EB0, 1FK7063-5AF71-1EB2, and 1FK7063-5AF71-1FH0 are useful models to compare when evaluating differences in encoder configuration, braking, and mechanical design.

Larger-frame 1FK7 models and alternative synchronous servo motor families may also be considered when the application requires a different performance range or mechanical arrangement.

The most important point is to confirm the exact configuration of the 1FK7063-5AF71-1KG5 before purchasing a replacement. Its encoder, brake, shaft, protection rating, complete dimensions, and net weight should be checked against the correct technical data and nameplate.

This ensures that the selected motor is suitable for the intended machine and avoids compatibility problems during installation or commissioning.