Siemens 1FT7068-5AF71-1CG1 Servo Motor: Product Overview, Technical Parameters, Applications, Advantages, and Related Models

1. Product Overview

The Siemens 1FT7068-5AF71-1CG1 is a model designation within the SIMOTICS family of industrial motors. The 1FT7 series is associated with permanent-magnet synchronous servo motors used in automated machinery, industrial positioning systems, and controlled-motion applications.

Servo motors are designed for systems that need regulated movement rather than simple constant-speed rotation. When paired with a compatible servo drive and motion controller, a servo motor can follow commands for speed, torque, acceleration, deceleration, and position. This makes it suitable for machinery that must perform repeatable movements as part of a defined production sequence.

The complete model number is important when identifying this motor. Variations in the final characters of a model designation can indicate differences in encoder configuration, shaft design, holding brake, connectors, or other mechanical and electrical options. These differences may affect whether a motor can replace another model without changing the drive, cabling, or machine structure.

This product description covers the motor’s brand, series, operating principles, potential applications, advantages, and related models. Exact technical values that require confirmation against the complete order number are identified accordingly, rather than treated as verified specifications.

2. Brand and Product Series

The SIMOTICS S-1FT7 family is designed for applications where controlled movement and integration with an industrial drive system are important.

For procurement, maintenance, or replacement, the complete designation 1FT7068-5AF71-1CG1 should be used. Similar-looking model numbers are not sufficient to establish compatibility, especially when the encoder, shaft, brake, mounting interface, or connector arrangement differs.

3. Detailed Technical Specifications

The following values describe the main electrical and mechanical characteristics of the 1FT7068-5AF71-1CG1. The motor has a rated speed of 3,000 rpm, rated torque of 10.9 Nm, and an optimum operating power of 3.42 kW under the specified operating conditions.

Understanding the rated data

Rated torque — 10.9 Nm

Rated torque describes the motor’s specified torque under the relevant rated thermal conditions. It is the more useful starting point for assessing continuous operation than the maximum torque figure.

The required torque should be calculated from the driven load, acceleration, friction, transmission ratio, and duty cycle. A motor that meets the average load requirement may still be unsuitable if the application has frequent torque peaks.

Static torque — 15 Nm at 100 K temperature rise

Static torque describes a specified stationary operating condition. It should not be interpreted as a continuous torque rating at every speed. The permitted torque depends on the thermal conditions, drive configuration, and motor operating limits.

Optimum operating power — 3.42 kW

The listed optimum operating point is 3,000 rpm and 3.42 kW. This represents the specified operating point, rather than a guarantee that the motor can provide the same power under all operating conditions.

Maximum speed — 9,000 rpm mechanically

The maximum permissible mechanical speed is not necessarily the speed available in a complete servo system. The listed maximum inverter speed is 5,100 rpm, so the drive configuration places a lower operating limit than the motor’s mechanical limit.

Absolute encoder — 24-bit single-turn and 12-bit multiturn

The encoder supplies position information to a compatible drive through the DRIVE-CLiQ interface. Its single-turn measurement describes angular position within one revolution, while the multiturn information records the number of revolutions within the specified range.

The actual position-control performance also depends on the drive, controller, mechanical transmission, and machine setup.

Holding brake — not fitted

This configuration does not include an integrated holding brake. If the application involves a vertical axis or a load that could move when the drive is disabled, the machine designer should assess whether a separate load-retention device is required.

Dimensions and weight

The motor’s specified net weight is 16.3 kg. The shaft height is 63 mm, but that measurement is not the overall motor height. The exact length, width, flange dimensions, shaft projection, and connector clearances should be taken from the mechanical drawing for the complete model number.

For preliminary planning, allow space for the motor body, power connector, signal cable, coupling, and access needed for installation and maintenance. Do not use an estimated envelope as a final mounting specification.

4. Product Introduction

The Siemens 1FT7068-5AF71-1CG1 is a permanent-magnet synchronous servo motor in the SIMOTICS S-1FT7 series. It is designed for industrial machinery that requires controlled rotary motion, repeatable positioning, and integration with a compatible servo drive.

The motor operates as part of a motion-control system. A controller issues movement commands, the drive regulates the electrical power supplied to the motor, and the feedback device reports position information. This arrangement allows the machine to control speed, acceleration, deceleration, and position rather than relying on constant-speed rotation alone.

With a rated torque of 10.9 Nm and a rated speed of 3,000 rpm, the motor can be considered for medium-duty positioning axes, automated handling equipment, feed mechanisms, and other industrial applications that fall within its operating limits.

The motor’s absolute encoder is an important feature of this configuration. It provides single-turn and multiturn position information through a DRIVE-CLiQ interface. This can support applications in which the controller needs accurate position feedback, provided the drive and control system are compatible with the encoder.

The motor uses natural cooling, so its installation should provide adequate heat dissipation. A confined enclosure, elevated ambient temperature, or repeated high-torque operation can reduce the available thermal margin. The motor should therefore be evaluated against the actual machine duty cycle rather than selected on rated power alone.

The plain shaft provides a mechanical interface for a compatible coupling or driven component. Shaft dimensions, coupling type, alignment, and permitted radial and axial loads should be checked during machine design.

The 1FT7068-5AF71-1CG1 is specified without a holding brake. This makes it important to consider how the machine behaves when the motor is stopped or the drive is disabled. For a horizontal rotary axis, the mechanical system may be able to remain in place without a brake. For a vertical axis or gravity-loaded mechanism, a separate holding arrangement may be necessary.

Overall, the motor is best evaluated as part of a complete servo system. Its performance depends on the drive, feedback interface, controller, mechanical transmission, load inertia, thermal conditions, and operating cycle.

5. Main Product Advantages

5.1 Reliable controlled motion

The motor is designed to operate with a compatible servo drive, allowing the control system to regulate speed and position according to the required machine sequence.

This is useful for applications that involve repeated positioning, controlled acceleration, frequent stops, or coordinated movement between multiple axes.

The achievable accuracy depends on the complete system. Encoder resolution is important, but backlash, coupling stiffness, mechanical vibration, controller tuning, and load characteristics also affect performance.

5.2 Useful torque for compact industrial axes

The rated torque of 10.9 Nm provides a practical reference for evaluating the motor against a mechanical load.

It may suit feed mechanisms, indexing units, rotary positioning systems, and other machinery requiring controlled movement. Where a gearbox is used, the torque and speed at the machine output must be calculated from the transmission ratio and efficiency.

The maximum torque of 63 Nm should not be treated as a continuous operating rating. Continuous torque, peak torque, and thermal loading must be assessed separately.

5.3 Absolute position feedback

The absolute encoder provides single-turn and multiturn position information through a compatible DRIVE-CLiQ interface.

This can be advantageous for applications in which the controller needs position information across multiple revolutions. However, the actual startup and reference behavior depends on the complete drive and machine configuration.

When replacing the motor, the encoder interface must be matched to the existing drive. A motor with a different feedback system may require changes to the drive hardware, cabling, or commissioning parameters.

5.4 Natural cooling

Natural cooling avoids the need for a separate forced-air cooling unit in configurations designed for this arrangement.

This can simplify the installation and reduce the number of auxiliary components. Adequate heat dissipation is still essential, particularly when the motor operates at high load or performs frequent acceleration and deceleration cycles.

5.5 Industrial protection rating

The IP65 rating indicates protection against dust ingress and water jets under the conditions defined by the rating.

This can be useful in industrial environments where dust and occasional water exposure are present. It does not mean the motor is suitable for immersion or every type of high-pressure cleaning process.

Connectors, seals, and cables must be installed correctly to maintain the intended protection.

5.6 Practical mounting arrangement

The motor uses an IM B5 flange-mounting arrangement, with other orientations permitted where specified.

A suitable flange can help integrate the motor with a machine frame, coupling, or gearbox. The mounting surface must be sufficiently rigid, and the shaft should be aligned with the driven mechanism to avoid excessive bearing loads.

5.7 Rotatable power connector

The rotatable power connector can make cable routing more convenient in machinery with restricted installation space.

The final connector orientation should allow sufficient clearance and a suitable cable bend radius. The cable must not be forced into a position that places excessive mechanical strain on the connector.

5.8 Suitable for coordinated automation

When connected to a compatible drive and controller, the motor can be used as part of a multi-axis motion-control system.

This is useful for machinery in which several movements must follow a coordinated sequence, such as a transfer mechanism synchronized with an indexing table or a feed axis coordinated with an assembly station.

5.9 Maintainable configuration

Keeping the complete model designation and its technical details on record makes maintenance and replacement easier.

Recording the encoder type, shaft dimensions, mounting arrangement, brake configuration, drive parameters, and cable connections helps reduce the risk of ordering a motor that looks similar but cannot be installed directly.

6. Typical Applications

The following are common application areas for this class of industrial servo motor. Actual suitability depends on the machine’s torque, speed, inertia, duty cycle, environmental conditions, and drive compatibility.

6.1 Packaging machinery

Packaging equipment often uses controlled motion for product feeding, indexing, cutting, sealing, and transfer.

A servo motor can regulate these movements according to the production sequence. Encoder feedback helps the drive control the motor’s rotation and coordinate its movement with other axes.

For high-cycle packaging equipment, the motor should be sized using the full motion profile, including acceleration, deceleration, dwell time, and repeated torque peaks.

6.2 Automated assembly equipment

Assembly machines may need to position components accurately before insertion, fastening, inspection, or another operation.

The motor can be considered for rotary indexing mechanisms, feed axes, and positioning units. Controlled motion can help maintain repeatable machine cycles and reduce variation between successive operations.

The required torque, acceleration, mechanical stiffness, and positioning tolerance should be evaluated together before the motor is selected.

6.3 Material handling systems

Automated handling equipment moves workpieces, fixtures, trays, and components between stations.

Servo motors can drive rotary positioning units, transfer mechanisms, and other controlled axes. When several axes are used together, the controller can coordinate their movements to achieve the required production sequence.

For vertical handling applications, the absence of a built-in holding brake must be considered in the mechanical design.

6.4 Printing and converting machinery

Printing and converting machines often require synchronized rotary movement, controlled feeding, and repeatable positioning.

Servo control can help maintain the required speed and coordinate movement between different machine sections. The motor’s encoder provides feedback for a compatible drive.

For rollers or other high-inertia components, engineers should evaluate the reflected inertia and acceleration torque rather than relying on rated torque alone.

6.5 Textile machinery

Textile equipment may use servo-controlled motion for winding, feeding, indexing, and related operations.

The motor can be considered where the required torque and speed fit its operating range. The controller may coordinate the motor with other axes or sensors to maintain consistent movement.

Dust, fibres, ambient temperature, and cooling conditions should be considered when planning the installation.

6.6 Industrial feed mechanisms

Feed mechanisms move material or components into a machine at a controlled rate.

A servo motor is useful where feed distance, speed, or timing must change according to the production sequence. Encoder feedback supports controlled movement, while the drive regulates the motor based on the programmed profile.

The mechanical load may vary during operation, so the sizing calculation should account for friction, acceleration, and any changes in the load.

6.7 Inspection and positioning systems

Automated inspection equipment may move cameras, sensors, fixtures, or workpieces into defined positions.

A servo motor can provide repeatable movement between inspection points. An absolute encoder may be useful when the control system requires position information across multiple revolutions.

Final positioning accuracy depends on the motor, drive, transmission, mechanical structure, controller, and any external measurement system.

6.8 Special-purpose industrial machinery

Custom machinery often combines several controlled movements within a limited installation space.

The 1FT7 series can be considered for suitable machine axes where the required torque, speed, feedback interface, and mechanical dimensions match the application. The exact model should be evaluated against the complete installation and drive requirements.

7. Installation and Engineering Considerations

7.1 Mechanical installation

The mounting surface should be rigid and properly aligned with the driven mechanism. Misalignment can introduce vibration, noise, and excessive radial or axial loads.

The plain shaft requires a compatible coupling or driven component. Shaft dimensions and permissible loads should be confirmed before installation.

The installation layout should leave adequate room for the power connector, signal cable, coupling, and future maintenance.

7.2 Electrical installation

The servo drive must support the motor’s electrical ratings and DRIVE-CLiQ encoder interface.

Power and signal cables should be installed with appropriate grounding, shielding, and routing. Correct cable installation helps reduce electrical interference and supports reliable feedback communication.

The drive parameters should match the actual motor configuration. Incorrect motor or encoder settings can cause commissioning problems or poor control performance.

7.3 Thermal management

Natural cooling relies on the surrounding environment to dissipate heat. Installation inside a confined enclosure may reduce cooling effectiveness, particularly during high-load operation.

The motor should be assessed against the full operating cycle, including continuous torque, peak torque, acceleration frequency, and ambient temperature.

7.4 Load retention without an integrated brake

The 1FT7068-5AF71-1CG1 does not have an integrated holding brake.

For horizontal axes, the mechanical arrangement may be able to remain stationary when the drive is disabled, but this should be evaluated for the actual load and transmission. For vertical axes or gravity-loaded mechanisms, a separate holding arrangement may be required.

8. Five Related Models in the Same Series

The following models are useful comparison candidates within the SIMOTICS S-1FT7 family. They share a related motor platform, but their feedback, shaft, brake, protection, and mechanical configurations may differ.

8.1 Comparing the related models

1FT7068-5AF71-1CH1 is worth considering if the application requires a holding brake. The brake changes the motor’s configuration and can affect weight, overall length, electrical connections, and installation requirements.

1FT7068-5AF71-1DG1 is a comparison candidate where incremental feedback may be appropriate. Before selecting it, confirm that the existing drive supports its encoder type and that the control system can use the required feedback interface.

1FT7068-5AF71-1CG2 is relevant when a higher protection specification is needed. The exact environmental requirements and connector arrangements should be checked before substitution.

1FT7068-5AF70-1FH0 represents a related configuration with a holding brake and a different flange design. It should not be considered a drop-in replacement without comparing the mounting dimensions and shaft interface.

For any replacement, compare the complete model number, rated torque, speed, encoder, shaft, brake, flange, connector arrangement, protection rating, dimensions, and weight. A similar base designation does not guarantee interchangeability.

9. Five Other Models from the Same Brand

The following models provide additional comparison options within the broader SIMOTICS range. They may be suitable for different torque requirements, installation spaces, or motion-control applications, but they should not be treated as direct substitutes without engineering checks.

9.1 Selecting an alternative

For a compact positioning axis, compare the required torque and speed with the motor’s frame size, inertia, and mounting arrangement.

For a higher-torque application, evaluate continuous torque, peak torque, gearbox requirements, and the inertia reflected to the motor shaft. A larger motor is not automatically a better choice if it adds unnecessary inertia or requires a different drive.

For a feedback-system change, confirm the encoder type and interface before selecting the motor. Different feedback arrangements can require changes to the drive, wiring, and commissioning settings.

For applications that need a holding brake, verify the brake’s holding capacity and permitted operating sequence. A brake-equipped motor is not automatically a direct replacement for a motor without a brake.

For a direct replacement, prioritize the complete order number, shaft dimensions, mounting pattern, encoder, brake, connector arrangement, and drive compatibility.

The exact dimensions and weights of the alternative models depend on their full order numbers. These values should be confirmed against the corresponding mechanical drawings before finalizing the installation.

10. Quick Reference Table

11. Final Product Assessment

The Siemens 1FT7068-5AF71-1CG1 is a SIMOTICS S-1FT7 permanent-magnet synchronous servo motor designed for industrial motion-control applications.

Its principal characteristics include a rated torque of 10.9 Nm, a rated speed of 3,000 rpm, an optimum operating power of 3.42 kW, natural cooling, IP65 protection, a plain shaft, and an absolute encoder with a DRIVE-CLiQ interface. The model does not include an integrated holding brake.

Its main advantages are controlled motion, absolute position feedback, compact industrial construction, and compatibility with suitable servo-drive systems. These features make it a candidate for packaging equipment, automated assembly, positioning mechanisms, feed systems, and other machinery that requires repeatable movement.

The most important selection criteria are the required torque and speed, motion profile, encoder compatibility, mechanical mounting, load inertia, thermal conditions, and whether the application requires a holding brake.

For purchasing or replacement, retain the full designation 1FT7068-5AF71-1CG1. The net weight is 16.3 kg, and the shaft height is 63 mm. The overall motor dimensions should be confirmed against the exact mechanical drawing before installation, particularly where the motor must fit an existing machine or replace an installed unit.