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The MPL-B560F-MK74AA is a low-inertia brushless AC rotary servo motor belonging to the MP-Series MPL servo motor family.
It is designed for demanding industrial motion-control applications where the motor must provide precise speed regulation, accurate positioning, rapid dynamic response, and reliable operation over repeated machine cycles.
The motor has a 460 VAC rating, a 165 mm frame size, a 152.4 mm magnetic stack length, and a 3000 rpm rated speed. It uses a high-resolution absolute multi-turn encoder for feedback and incorporates a 24 V DC holding brake.
The motor has a keyless shaft, no shaft seal, and a right-angle SpeedTEC DIN connector with 180° rotational capability, providing useful flexibility when the motor is installed in machinery with limited cable-routing space.
The MPL-B560F-MK74AA is particularly well suited to applications where rapid acceleration and deceleration are required. Its low-inertia construction allows the servo system to respond quickly to changes in the commanded position or speed.
Another important feature is the integrated holding brake. The brake is especially useful in applications where the motor must help hold a mechanical load when the servo system is stopped or power is removed. The suitability of the brake for a specific safety or vertical-axis application should always be evaluated as part of the complete machine design.
| Item | Specification |
|---|---|
| Brand | Allen-Bradley |
| Product Family | MP-Series |
| Product Series | MPL |
| Series Type | Low-Inertia Brushless Servo Motors |
| Product Category | AC Rotary Servo Motor |
| Model | MPL-B560F-MK74AA |
| Motor Type | Brushless Permanent-Magnet AC Servo Motor |
| Primary Application | Industrial Motion Control |
| Voltage Class | 400/480 V class |
| Rated Voltage | 460 VAC |
| Frame Size | 165 mm |
| Rated Speed | 3000 rpm |
| Magnetic Stack Length | 152.4 mm |
| Feedback | High-resolution absolute multi-turn encoder |
| Brake | 24 V DC holding brake |
| Shaft | Keyless |
| Shaft Seal | No shaft seal |
| Connector | SpeedTEC DIN |
| Connector Configuration | Right-angle, 180° rotatable |
| Mounting | IEC metric flange |
| Approx. Weight | 27.2 kg |
| Overall Dimensions | Refer to mechanical installation drawing; basic catalog data identifies the 165 mm frame and 152.4 mm magnetic stack rather than one single overall L × W × H dimension |
| Parameter | MPL-B560F-MK74AA |
|---|---|
| Model | MPL-B560F-MK74AA |
| Brand | Allen-Bradley |
| Series | MP-Series MPL |
| Series Type | Low-Inertia Servo Motor |
| Motor Type | Brushless AC Rotary Servo Motor |
| Voltage Rating | 460 VAC |
| Voltage Class | 400/480 V class |
| Phase | 3-phase |
| Rated Speed | 3000 rpm |
| Maximum Speed | Application-dependent; do not substitute maximum speed for rated speed |
| Rated Torque | Approx. 26.8 N·m |
| Rated Output | Approx. 5.5 kW class |
| Frame Size | 165 mm |
| Frame Size in Inches | Approx. 6.50 in |
| Magnetic Stack Length | 152.4 mm |
| Magnetic Stack Length in Inches | 6.0 in |
| Feedback Type | Absolute multi-turn |
| Feedback Resolution | 1024 Sin/Cos feedback characteristic |
| Encoder | High-resolution Hiperface-type absolute multi-turn feedback |
| Shaft Type | Keyless shaft |
| Shaft Key | None |
| Shaft Seal | None |
| Holding Brake | 24 V DC |
| Brake Function | Motor holding brake |
| Connector Type | Circular SpeedTEC DIN connector |
| Connector Style | Right-angle |
| Connector Rotation | 180° rotatable |
| Mounting Flange | IEC metric |
| Mounting | Metric flange mounting |
| Enclosure | Industrial servo-motor enclosure |
| Approx. Weight | 27.2 kg |
| Weight in Pounds | Approx. 60 lb |
| Frame Dimension | 165 mm |
| Magnetic Stack Dimension | 152.4 mm |
| Overall Motor Dimensions | Exact overall L × W × H should be taken from the applicable mechanical drawing |
| Shaft Configuration | Keyless |
| Brake Voltage | 24 V DC |
| Feedback Configuration | Multi-turn high-resolution absolute feedback |
| Typical Control Method | Closed-loop servo control |
| Typical Drive System | Industrial servo drive |
| Typical Application | Precision machine motion |
| Thermal Performance | Dependent on torque, speed, duty cycle and installation conditions |
For this exact model, the commonly specified shipping/product weight is approximately 60 lb, which converts to approximately:
60 lb × 0.453592 = 27.22 kg
Therefore, a practical catalog value is approximately 27.2 kg.
This is an important distinction from some visually similar MPL models. The presence of the 24 V DC holding brake can contribute to the difference in weight between otherwise similar motor configurations.
For product listings, the recommended wording is:
Weight: approximately 27.2 kg
rather than using the substantially lower weight sometimes associated with other motor configurations.
The MPL-B560F-MK74AA uses a 165 mm frame and a 152.4 mm magnetic stack.
| Physical Parameter | Dimension |
|---|---|
| Model | MPL-B560F-MK74AA |
| Frame Size | 165 mm |
| Frame Size | Approx. 6.50 in |
| Magnetic Stack | 152.4 mm |
| Magnetic Stack | 6.0 in |
| Mounting Standard | IEC metric |
| Mounting Flange | Metric flange |
| Shaft | Keyless |
| Connector | Right-angle circular SpeedTEC DIN |
| Connector Adjustment | 180° |
| Overall Length | Mechanical drawing should be used for final value |
| Overall Width | Determined by motor frame/flange geometry |
| Overall Height | Determined by motor frame/flange geometry |
| Approx. Weight | 27.2 kg |
The 165 mm frame dimension should not be interpreted as the complete external motor envelope. When designing a machine, sufficient clearance must also be provided for the shaft, flange, connector, brake-related construction, cables, and maintenance access.
For cabinet or machine-layout purposes, the exact mechanical drawing should be used rather than estimating the total motor length from the magnetic stack length alone.
The model number MPL-B560F-MK74AA identifies a specific motor configuration.
| Code | General Configuration |
|---|---|
| MPL | MPL low-inertia brushless servo motor family |
| B | 460 V / 480 V-class configuration |
| 5 | 165 mm frame size |
| 60 | 152.4 mm magnetic stack configuration |
| F | 3000 rpm speed configuration |
| M | High-resolution absolute multi-turn feedback |
| K | Keyless shaft configuration |
| 7 | SpeedTEC DIN right-angle connector configuration |
| 4 | 24 V DC holding-brake configuration |
| AA | Standard factory configuration designation |
The final model suffix is particularly important.
The “4” in the MK74AA configuration indicates the holding-brake configuration. Consequently, the MPL-B560F-MK74AA should not be treated as electrically and mechanically identical to every motor beginning with MPL-B560F-MK7.
When purchasing a replacement, the entire catalog number should be matched whenever possible.
The MPL-B560F-MK74AA is designed for machines that require controlled rotary motion rather than simple continuous motor rotation.
In a servo system, the motor operates together with a servo drive and motion controller. The controller determines the required movement, the drive regulates motor current, and the encoder provides feedback regarding the motor’s position and movement.
This closed-loop arrangement allows the machine to control:
The MPL-B560F-MK74AA combines a low-inertia rotor with high-resolution absolute feedback. This combination makes the motor well suited to machines that frequently change speed or direction.
The integrated 24 V DC holding brake provides another useful feature for machine designers. It can be used to hold the motor shaft when the servo system is not actively controlling the axis, subject to the application’s mechanical and safety requirements.
The low-inertia construction is one of the most important characteristics of the MPL series.
Motor inertia determines how readily the motor can change its rotational speed.
A lower-inertia rotor generally requires less torque to achieve a given acceleration, allowing the servo system to respond rapidly to changes in the motion command.
This is particularly useful in:
For machines with frequent start-stop operation, the low-inertia configuration can contribute to shorter motion cycles and improved machine responsiveness.
The MPL-B560F-MK74AA uses high-resolution absolute multi-turn feedback.
The encoder is an essential component of the servo system because it provides the control system with information about motor position and movement.
A multi-turn encoder is particularly valuable where the motor rotates through multiple revolutions and the control system needs detailed positional information.
The feedback system supports closed-loop operation, allowing the servo drive to compare commanded motion with actual motor movement.
This helps the machine maintain accurate positioning and stable operation.
The integrated 24 V DC holding brake is one of the most significant differences between the MPL-B560F-MK74AA and some related MPL configurations.
The brake is designed primarily as a holding device.
It can be particularly useful for:
However, a motor holding brake should not automatically be treated as a complete machine safety brake.
For vertical or potentially hazardous loads, the machine designer should evaluate the entire load-holding and safety architecture, including mechanical counterbalance, external braking, safety circuits, drive behavior, load inertia, and applicable machine-safety requirements.
The motor uses a keyless shaft.
A keyless shaft can be advantageous where the machine uses a compatible clamping coupling or other shaft-locking mechanism.
This configuration can provide a clean mechanical interface and can be suitable for precision servo applications.
The selected coupling must be compatible with:
The shaft should never be treated as interchangeable with a keyed-shaft motor solely because the frame size is the same.
The MPL-B560F-MK74AA uses a circular SpeedTEC DIN connector in a right-angle configuration.
The connector can be rotated through approximately 180°.
This feature is useful in compact machine installations because the cable does not have to exit in only one fixed direction.
It can help simplify:
For machines with limited rear clearance, connector orientation can be just as important as the motor’s basic frame dimensions.
Packaging equipment frequently performs fast and repetitive movements.
Servo motors are commonly used for:
The MPL-B560F-MK74AA’s low-inertia characteristics are particularly suitable for machines that repeatedly accelerate, decelerate and stop.
Material-handling machinery often requires precise positioning.
The motor can be used in systems such as:
The holding brake can be advantageous in applications where a mechanical axis must remain stationary when servo power is removed.
Machine tools often require accurate positioning and controlled motion.
Potential applications include:
The suitability depends on the actual torque, speed, inertia and precision requirements.
Printing machinery frequently requires synchronization between several moving mechanisms.
Servo motors can be used for:
The absolute feedback system provides the information required for precise closed-loop control.
Converting equipment processes materials such as film, paper, foil and other continuous webs.
Servo applications may include:
Fast response can be particularly valuable when the machine needs rapid changes in operating conditions.
Automated assembly machines often combine multiple servo axes.
Typical applications include:
The low-inertia motor design can help maintain fast repetitive cycles.
The motor can also be considered for selected industrial robotic or automated mechanisms.
The actual suitability depends on:
| Advantage | Description |
|---|---|
| Low-Inertia Design | Provides rapid response to changes in speed and position |
| 3000 rpm Rating | Suitable for high-speed industrial motion applications |
| Absolute Multi-Turn Feedback | Provides detailed position information |
| 24 V DC Holding Brake | Provides shaft holding capability for suitable applications |
| Keyless Shaft | Suitable for compatible clamping couplings |
| Rotatable Right-Angle Connector | Helps simplify cable routing |
| 165 mm Frame | Suitable for medium-to-high capacity industrial axes |
| 152.4 mm Magnetic Stack | Provides a substantial active motor stack |
| Closed-Loop Servo Operation | Allows precise position and speed control |
| Industrial Construction | Designed for demanding automated machinery |
| IEC Metric Mounting | Supports standardized machine integration |
| Flexible Installation | Connector orientation can be adjusted to suit machine layout |
The MPL-B560F-MK74AA is particularly attractive when an application needs both dynamic servo performance and shaft holding capability.
A motor without a brake can be perfectly suitable for horizontal rotary applications. However, some machine axes require the motor shaft to remain stationary when servo torque is removed.
The integrated 24 V DC brake provides an additional option for these applications.
The combination of:
makes the motor suitable for a broad range of industrial motion-control applications.
The following models are useful candidates for comparison when working with the MPL-B560F-MK74AA.
| Model | Series / Relationship | Voltage Class | Frame | Stack Length | Speed | Feedback | Brake | Approx. Weight | Dimensions |
|---|---|---|---|---|---|---|---|---|---|
| MPL-B560F-MK72AA | Same MPL family; closely related configuration | 460 V | 165 mm | 152.4 mm | 3000 rpm | Absolute multi-turn | No brake configuration | Approx. 25–27 kg class | 165 mm frame; 152.4 mm stack; overall dimensions by mechanical drawing |
| MPL-B560F-MK74AA | Reference model | 460 V | 165 mm | 152.4 mm | 3000 rpm | Absolute multi-turn | 24 V DC | Approx. 27.2 kg | 165 mm frame; 152.4 mm stack; overall dimensions by mechanical drawing |
| MPL-B560F-SJ74AA | Same MPL family, alternative feedback/configuration | 460 V | 165 mm | 152.4 mm | 3000 rpm class | High-resolution feedback configuration | 24 V DC configuration | Approx. 27 kg class | 165 mm frame; 152.4 mm stack; exact envelope by drawing |
| MPL-B560F-SK74AA | Same MPL family | 460 V | 165 mm | 152.4 mm | 3000 rpm class | High-resolution feedback configuration | 24 V DC configuration | Approx. 27 kg class | 165 mm frame; 152.4 mm stack; exact envelope by drawing |
| MPL-B580F-MJ74AA | Same MPL family, larger frame/stack configuration | 460 V | Larger MPL frame | Longer stack configuration | 3000 rpm class | Absolute multi-turn | 24 V DC configuration | Application/configuration dependent | Larger than 165 mm class; exact dimensions by drawing |
The MPL-B560F-MK72AA is the closest comparison when the machine does not require the integrated holding brake.
The MPL-B560F-MK74AA remains the preferred choice when the 24 V DC holding brake is required and the machine is designed around the 165 mm / 152.4 mm motor configuration.
The MPL-B560F-SJ74AA and MPL-B560F-SK74AA are useful related MPL configurations when evaluating different feedback or configuration arrangements.
The MPL-B580F-MJ74AA represents a larger-capacity direction within the same general MPL product family and can be considered when the machine requires more motor capability than the 165 mm frame configuration provides.
Because servo motor suffixes can represent differences in feedback, shaft, connector and brake configuration, the complete catalog number should always be checked before substitution.
These two models are particularly useful to compare because they share much of the same basic motor configuration.
| Parameter | MPL-B560F-MK72AA | MPL-B560F-MK74AA |
|---|---|---|
| Series | MP-Series MPL | MP-Series MPL |
| Voltage | 460 VAC | 460 VAC |
| Frame | 165 mm | 165 mm |
| Magnetic Stack | 152.4 mm | 152.4 mm |
| Rated Speed | 3000 rpm | 3000 rpm |
| Feedback | Absolute multi-turn | Absolute multi-turn |
| Shaft | Keyless | Keyless |
| Connector | SpeedTEC DIN | SpeedTEC DIN |
| Brake | No brake configuration | 24 V DC holding brake |
| Weight | Lower than brake-equipped version | Approx. 27.2 kg |
| Main Difference | Brake-free configuration | Brake-equipped configuration |
The main practical difference is the brake.
If the machine is a horizontal rotary application with no requirement for shaft holding after power removal, the brake-free configuration may be adequate.
If the machine includes a vertical axis or another load that requires controlled holding, the brake-equipped configuration may be more appropriate.
The following products represent commonly encountered industrial automation and motion-control models from the same brand family and are useful for broader equipment selection.
| Model | Product Category | Typical Function | Main Specification | Feedback / Control | Approx. Weight | Dimensions |
|---|---|---|---|---|---|---|
| MPL-B560F-MK74AA | MPL Servo Motor | Precision rotary motion | 460 VAC, 3000 rpm, approx. 26.8 N·m | Absolute multi-turn encoder | 27.2 kg | 165 mm frame; 152.4 mm stack |
| MPL-B580J-MK74AA | MPL Servo Motor | Higher-capacity rotary servo motion | 460 V class, higher-capacity MPL configuration | Absolute multi-turn | Approx. 30 kg class | Larger MPL frame; exact dimensions by configuration |
| 2094-BC02-M02 | Kinetix Servo Drive / Integrated Motion Component | Servo drive and motion control | High-voltage industrial servo system | Digital motion feedback | Approx. several kg | Cabinet-mounted; exact dimensions depend on system configuration |
| 2198-H025-ERS | Kinetix Servo Drive | Servo motor control | 480 V class motion-control architecture | Integrated feedback/control interface | Approx. 3 kg class | Compact cabinet-mounted enclosure |
| 1756-L81E | ControlLogix Controller | Machine and motion control | High-performance programmable controller | EtherNet/IP-based control architecture | Approx. 0.3 kg class | Chassis-mounted controller module |
These models do not all perform the same function. The servo motors provide mechanical movement, servo drives provide power conversion and motor control, and the controller provides machine-level logic and coordinated motion commands.
The MPL-B560F-MK74AA should be considered as one part of a complete motion-control system.
A typical system contains:
Controller → Servo Drive → Servo Motor → Mechanical Load
The controller determines what the machine should do.
The servo drive converts the control command into controlled electrical current.
The motor converts that electrical power into mechanical torque and rotation.
The encoder sends position information back to the drive.
The brake provides shaft-holding capability when appropriately controlled.
This closed-loop structure is what allows the machine to perform accurate and repeatable motion.
| Application | Suitability | Reason |
|---|---|---|
| Packaging Machine | Excellent | Fast repetitive motion and precise positioning |
| Indexing Machine | Excellent | Low inertia and accurate feedback |
| Automated Assembly | Excellent | Rapid acceleration/deceleration |
| Material Handling | Very Good | Servo positioning and optional holding brake |
| Vertical Axis | Potentially Excellent | Brake can provide holding function when correctly applied |
| Printing Machine | Very Good | Precise synchronization |
| Converting Machine | Very Good | Controlled speed and positioning |
| Machine Tool | Very Good | Accurate rotary movement |
| Rotary Table | Excellent | Positioning and indexing capability |
| Pick-and-Place System | Very Good | Fast response |
| General Conveyor | Good | Servo control may exceed the needs of simple constant-speed applications |
| Simple Fan/Pump | Less Suitable | A standard variable-speed motor may be more economical |
The low-inertia motor design allows the servo system to change speed rapidly.
For high-cycle machinery, even small improvements in acceleration and deceleration can contribute to improved overall production efficiency.
High-resolution absolute feedback allows the control system to monitor actual shaft movement with high detail.
This is valuable for indexing, registration, cutting and synchronized machine operations.
The integrated 24 V DC brake adds an important mechanical holding function.
This is especially useful for selected vertical-axis and positioning applications.
The rotatable right-angle connector makes cable installation easier in compact machine structures.
The motor is designed specifically for closed-loop motion control rather than basic fixed-speed motor operation.
Before selecting this motor for a new machine, the following factors should be calculated rather than selected solely from the motor nameplate.
The continuous load torque should remain within the motor’s continuous operating capability.
Acceleration, deceleration and shock loads can require significantly more torque than the normal running torque.
The inertia ratio between the motor and driven load has a major effect on servo tuning and dynamic response.
The machine’s required operating speed should be compared with the motor’s rated and allowable speed range.
A motor operating continuously at a high load may have very different thermal requirements from a motor operating intermittently.
The integrated brake should be evaluated based on the actual load-holding requirement.
The keyless shaft requires a compatible coupling arrangement.
The absolute multi-turn feedback system must be compatible with the selected servo drive.
The right-angle connector requires adequate rear clearance and appropriate cable routing.
Servo motors generally require less routine mechanical maintenance than many conventional mechanically commutated motors, but proper installation and operating conditions remain important.
Important maintenance checks include:
The motor should be kept free from conditions that exceed its specified environmental limits.
The MK74AA configuration is particularly attractive when the application requires the following combination:
460 VAC + 165 mm frame + 152.4 mm stack + 3000 rpm + absolute multi-turn feedback + keyless shaft + 24 V DC holding brake.
This combination provides a useful balance between motor capacity, response characteristics, feedback performance and mechanical holding capability.
For equipment manufacturers, the brake can also reduce the need to install a separate motor-side holding mechanism, although the overall machine safety architecture must still be evaluated independently.
| Strength | Practical Benefit |
|---|---|
| Low-Inertia Rotor | Fast acceleration and deceleration |
| 3000 rpm Rated Speed | Suitable for fast industrial motion |
| Approx. 26.8 N·m Torque | Suitable for medium/high-capacity servo axes |
| 165 mm Frame | Strong industrial mechanical platform |
| 152.4 mm Stack | Substantial magnetic active length |
| Absolute Multi-Turn Feedback | Accurate position information |
| 24 V DC Brake | Shaft holding capability |
| Keyless Shaft | Compatible with suitable clamping couplings |
| Rotatable Connector | Easier machine integration |
| IEC Metric Mounting | Standardized mechanical installation |
| Brushless Construction | Suitable for electronic servo commutation |
| Closed-Loop Control | Precise speed, torque and position regulation |
| Item | Specification |
|---|---|
| Model | MPL-B560F-MK74AA |
| Brand | Allen-Bradley |
| Series | MP-Series MPL |
| Product Type | Low-Inertia Brushless AC Servo Motor |
| Voltage | 460 VAC |
| Voltage Class | 400/480 V |
| Rated Speed | 3000 rpm |
| Rated Torque | Approx. 26.8 N·m |
| Rated Output | Approx. 5.5 kW class |
| Frame Size | 165 mm |
| Magnetic Stack | 152.4 mm |
| Feedback | 1024 Sin/Cos, absolute multi-turn encoder |
| Feedback Type | High-resolution absolute multi-turn |
| Shaft | Keyless |
| Shaft Seal | None |
| Brake | 24 V DC holding brake |
| Connector | Circular SpeedTEC DIN |
| Connector Type | Right-angle, 180° rotatable |
| Mounting | IEC metric flange |
| Approx. Weight | 27.2 kg |
| Frame Dimension | 165 mm |
| Stack Dimension | 152.4 mm |
| Overall Dimensions | Exact overall dimensions should be taken from the mechanical drawing |
| Series Type | Low-Inertia |
| Primary Application | Industrial precision motion control |
| Main Advantage | Fast dynamic response combined with absolute feedback and integrated holding brake |
The MPL-B560F-MK74AA is a high-performance industrial servo motor designed for applications where speed, positioning accuracy, repeatability and dynamic response are important.
Its 165 mm frame, 152.4 mm magnetic stack, 3000 rpm rated speed, approximately 26.8 N·m torque, high-resolution absolute multi-turn feedback, and 24 V DC holding brake make it particularly suitable for demanding automated machinery.
The integrated brake is one of the most valuable features of this specific configuration. It gives the machine designer an additional shaft-holding option without changing the fundamental low-inertia servo architecture.
The motor is especially well suited to packaging machinery, indexing systems, automated assembly equipment, material handling, machine tools, printing and converting equipment, rotary tables and other industrial motion applications.
When replacing an existing motor, the most important point is to match the complete model number, not merely the MPL series or 165 mm frame size. The suffix can determine important characteristics such as feedback, connector, shaft configuration and brake.
For engineering selection, the motor should also be evaluated together with its servo drive, controller, feedback cable, power cable, mechanical coupling, load inertia, duty cycle and braking requirements.
Overall, the MPL-B560F-MK74AA is best described as a 165 mm-frame, 460 VAC, 3000 rpm, low-inertia brushless servo motor with high-resolution absolute multi-turn feedback, keyless shaft, rotatable right-angle connector and integrated 24 V DC holding brake, intended for precision industrial motion-control applications.