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Allen-Bradley MPL-B420F-M-X226 Electric Cylinder Replacement Servo Motor

1. Product Overview

The MPL-B420F-M-X226 is an MP-Series low-inertia servo motor designed specifically as an electric-cylinder replacement motor for industrial motion-control applications. It is a 400 V-class, three-phase servo motor with a 1.45 kW power rating, a maximum speed of approximately 3150 RPM, and a 4.74 N·m torque rating.

This model is associated with electric-cylinder systems using a 20 mm ball-screw pitch and incorporates absolute multi-turn feedback with a 24 V brake. The brake-equipped configuration makes it suitable for applications where the load must be held securely when servo power is removed.

The motor belongs to the MPL low-inertia brushless servo motor family within the broader MP-Series motion-control product range. Its compact motor construction, relatively low rotor inertia, high-resolution feedback, and compatibility with servo-drive systems make it suitable for precise automated linear-motion applications.

The MPL-B420F-M-X226 is particularly relevant when replacing the motor section of a compatible electric cylinder rather than designing an entirely new motor-and-actuator assembly. Its configuration is closely related to the MPL-B420F-M-X225, with the major distinction being the integrated 24 V holding brake on the X226 version.

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2. Brand and Product Classification

Item	Specification
Brand	Allen-Bradley
Product Family	MP-Series
Product Series	MPL Low-Inertia Servo Motors
Product Type	Electric Cylinder Replacement Servo Motor
Model	MPL-B420F-M-X226
Motor Construction	Brushless Permanent-Magnet Servo Motor
Application Type	Electric Cylinder / Linear Motion
Feedback	Absolute Multi-Turn High-Resolution Feedback
Brake	24 V DC Holding Brake
Voltage Class	400 V
Nominal Supply	460 VAC
Phase	Three Phase
Rated Power	Approximately 1.45 kW
Maximum Speed	Approximately 3150 RPM
Frequency Range	0–210 Hz
Rated Torque	Approximately 4.74 N·m
Ball-Screw Pitch	20.0 mm/rev
Frame Size	Size 63 / approximately 115 mm motor frame class
Magnet Stack	Approximately 2 in. / 50.8 mm
Approximate Weight	6.12 kg
Brake Voltage	24 V DC
Mounting Concept	Electric-cylinder replacement motor
Shaft Configuration	Configuration-dependent; verify exact mechanical suffix and supplied assembly
Enclosure Information	Listings commonly identify IP66 for this model
Intended Drive System	Compatible MP-Series/Kinetix servo-drive applications

The published product information identifies the X226 as an electric-cylinder replacement motor, size 63, 460 VAC, 20 mm pitch ball screw, absolute feedback, with brake.

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3. Detailed Technical Specifications

Parameter	MPL-B420F-M-X226 Specification
Model	MPL-B420F-M-X226
Brand	Allen-Bradley
Series	MPL Low-Inertia Servo Motor
Product Family	MP-Series
Motor Type	Brushless Permanent-Magnet Servo Motor
Application	Electric Cylinder Replacement
Rated Voltage	460 VAC
Voltage Class	400 V
Phase	3 Phase
Frequency	0–210 Hz
Rated Power	1.45 kW
Maximum Speed	3150 RPM
Rated Torque	4.74 N·m
Rated Current	Approximately 6.13 A
Feedback	Absolute Multi-Turn High-Resolution Encoder
Brake	24 V DC Brake
Ball-Screw Pitch	20.0 mm/rev
Frame / Size	Size 63 / approximately 115 mm frame class
Magnet Stack Length	Approximately 50.8 mm / 2 in.
Enclosure	Commonly specified as IP66
Dimensions	Approximately 115 mm frame class; complete L × W × H envelope depends on mounting and shaft configuration
Weight	Approximately 6.12 kg
Motor Inertia	Configuration-dependent; verify exact catalog data before final sizing
Mounting	Electric-cylinder replacement configuration
Cooling	Natural / motor-housing heat dissipation
Brake Function	Load holding during servo power-off conditions
Feedback Function	Absolute position feedback for motion-control operation
Mechanical Application	Linear actuator / electric cylinder
Electrical Connection	Configuration-dependent
Operating Environment	Industrial automation environments
Replacement Function	Replacement motor for compatible electric-cylinder assemblies

The 1.45 kW, 3150 RPM, 4.74 N·m and 6.13 A values are consistently identified in available product listings for this exact model. The listed product weight is 13.49 lb, which is approximately 6.12 kg.

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4. Dimensions and Weight

The MPL-B420F-M-X226 belongs to the size-63 electric-cylinder replacement motor configuration. The motor frame is associated with the B420 size and approximately 115 mm frame class.

Because this is an electric-cylinder replacement motor rather than a simple standalone rotary motor, the complete physical envelope depends on the associated cylinder assembly, mounting arrangement, shaft configuration, connector orientation, and mechanical interface.

For this reason, the most useful dimensional information for equipment selection is the frame class, motor stack, cylinder interface, and ball-screw configuration rather than treating a generic motor length as the complete installed dimension.

Mechanical Parameter	Specification
Model	MPL-B420F-M-X226
Motor Frame Class	Approximately 115 mm
Electric-Cylinder Size	Size 63
Magnet Stack	2 in. / approximately 50.8 mm
Ball-Screw Pitch	20.0 mm/rev
Overall Dimensions	Configuration-dependent
Motor Housing Width	Approximately 115 mm class
Installed Length	Depends on electric-cylinder configuration
Shaft / Drive Interface	Electric-cylinder-specific
Brake Housing	Integrated 24 V brake configuration
Weight	Approximately 6.12 kg
Dimensional Reference	Verify exact mechanical drawing before installation

The 6.12 kg figure is obtained by converting the listed 13.49 lb product weight to kilograms. The exact installed dimensions should be taken from the mechanical drawing for the specific electric-cylinder configuration rather than estimated from the motor frame alone.

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5. Understanding the MPL-B420F-M-X226 Model Number

The model designation contains several useful pieces of product information.

MPL identifies the MPL low-inertia servo-motor family.

B420 identifies the particular motor size and performance class within the MPL family.

F identifies the motor configuration associated with the electric-cylinder replacement design.

M identifies the relevant mechanical/configuration designation.

X226 identifies the specific electric-cylinder replacement configuration, including the brake-equipped version.

The X226 configuration is particularly important because it is the 24 V brake version of the B420F electric-cylinder replacement motor.

The closely related X225 uses the same B420F motor family but without the 24 V brake. Both are associated with a 20 mm/rev ball-screw configuration.

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6. Product Introduction

The MPL-B420F-M-X226 is designed for machinery that requires controlled linear movement, repeatable positioning, and reliable load holding.

Instead of using a conventional motor connected to a separate mechanical transmission, the electric-cylinder concept combines servo motor technology with a precision linear-motion mechanism. This arrangement can reduce the number of mechanical components required between the servo system and the moving load.

The B420F configuration is particularly suitable for applications requiring a relatively high level of force and positioning accuracy while maintaining a compact industrial motion-control arrangement.

The motor’s absolute multi-turn feedback provides the control system with positional information without relying solely on a conventional incremental feedback sequence. This is useful for machines where repeatable position control is important.

The integrated 24 V brake distinguishes the X226 from the X225. The brake can be used to hold a vertical or otherwise mechanically demanding load when the servo amplifier is disabled or motor torque is unavailable.

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7. Main Performance Characteristics

7.1 1.45 kW Servo Power

The MPL-B420F-M-X226 provides approximately 1.45 kW of rated motor power.

This power level places the motor in a useful range for medium-duty automated linear-motion applications, including material handling, machine positioning, packaging machinery, and other industrial mechanisms requiring controlled movement.

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7.2 3150 RPM Maximum Speed

The motor is specified for approximately 3150 RPM maximum speed.

When combined with the 20 mm/rev ball-screw pitch, the motor configuration provides a substantial linear travel capability.

The theoretical linear travel corresponding to one motor revolution is 20 mm. Therefore, the screw pitch establishes a direct relationship between motor rotation and linear displacement.

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7.3 4.74 N·m Torque

The motor has a rated torque of approximately 4.74 N·m.

Torque is particularly important in an electric-cylinder system because the motor torque is converted into linear force through the screw mechanism.

The actual linear force available at the actuator depends on screw efficiency, operating speed, load conditions, acceleration, duty cycle, and the mechanical condition of the complete electric-cylinder assembly.

Therefore, the motor’s torque value should not be directly interpreted as a linear-force rating without considering the complete actuator mechanism.

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8. 20 mm Ball-Screw Pitch

One of the defining characteristics of the X226 configuration is its 20.0 mm/rev ball-screw pitch.

A 20 mm pitch means that one complete screw revolution corresponds to approximately 20 mm of theoretical linear travel.

For example:

Motor Rotation	Theoretical Linear Travel
1 revolution	20 mm
10 revolutions	200 mm
50 revolutions	1000 mm
100 revolutions	2000 mm

Actual machine movement depends on the complete mechanical arrangement and control system.

The 20 mm/rev configuration makes the X226 suitable for applications requiring relatively fast linear travel while retaining servo-controlled positioning.

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9. Integrated 24 V Brake

The most important functional difference between the X226 and X225 is the 24 V brake.

The brake provides a holding function when the motor is not actively producing servo torque.

This feature is particularly useful for vertical-axis applications where the load could move downward under gravity after motor power is removed.

Typical applications include:

• Vertical lifting axes
• Vertical positioning systems
• Automated handling equipment
• Transfer mechanisms
• Press-related mechanisms
• Packaging machinery
• Material-loading systems
• Machine-tool auxiliary axes

The brake should not automatically be treated as a dynamic stopping device. In most servo applications, controlled electrical deceleration is used to stop the load, while the mechanical brake is primarily used for holding.

Correct brake timing, drive configuration, and safety logic should therefore be considered during system design.

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10. Absolute Multi-Turn Feedback

The X226 is associated with absolute multi-turn feedback.

Absolute feedback allows the servo system to determine motor position using encoder information rather than relying only on incremental pulse counting.

The multi-turn capability is especially useful for motion systems where the control system needs to distinguish position across multiple revolutions.

For electric-cylinder applications, accurate feedback is important because motor rotation is converted directly into linear actuator movement.

The feedback system therefore contributes to:

• Accurate positioning
• Repeatable motion
• Controlled acceleration and deceleration
• Stable velocity control
• Improved synchronization
• Reliable linear-axis operation

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11. Applications

11.1 Industrial Automation

The MPL-B420F-M-X226 can be used in industrial automation equipment requiring precise linear movement.

Typical systems include automated production equipment, assembly machinery, transfer mechanisms, and servo-controlled positioning stations.

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11.2 Packaging Machinery

Packaging equipment often requires rapid and repeatable movement.

The 20 mm/rev screw configuration can provide relatively fast linear movement while servo feedback allows the machine controller to regulate acceleration, speed, and position.

Potential applications include:

• Product positioning
• Carton handling
• Sealing mechanisms
• Cutting mechanisms
• Labeling equipment
• Product transfer
• Packaging alignment

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11.3 Material Handling

Electric-cylinder systems are useful in automated material-handling equipment because they provide controlled linear movement without relying on pneumatic air circuits.

The X226 brake configuration can be particularly useful when the axis operates vertically or when the load needs to remain in position during a machine stop.

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11.4 Assembly Machines

Automated assembly equipment frequently requires accurate insertion, pressing, positioning, and transfer movements.

A servo-controlled electric-cylinder arrangement can provide controlled travel and repeatable positioning.

Typical examples include:

• Component insertion
• Part positioning
• Pressing operations
• Clamping
• Transfer mechanisms
• Automated fixtures

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11.5 Vertical Motion Systems

The integrated 24 V brake makes the X226 particularly relevant to vertical-axis applications.

When properly engineered, the brake can help prevent unwanted movement when servo torque is removed.

The final safety design should still include appropriate mechanical and control-system protection for the specific machine.

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11.6 Machine Tools

Servo-driven linear mechanisms are widely used for auxiliary positioning functions in machine tools.

Potential uses include:

• Tool positioning
• Workpiece positioning
• Automatic loading
• Auxiliary feed mechanisms
• Clamping systems
• Material transfer

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11.7 Converting and Processing Equipment

Paper, film, foil, textile, and other continuous-process machines can require accurate linear positioning.

The X226 can be considered for applications involving synchronized linear movement, especially when the actuator must repeatedly move between defined positions.

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12. Advantages

12.1 Integrated Electric-Cylinder Concept

One of the main advantages is the integration of servo motor technology with an electric-cylinder motion system.

This can simplify the mechanical architecture compared with systems requiring a separate rotary motor, coupling, gearbox, and external linear transmission.

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12.2 Brake-Equipped Configuration

The 24 V brake is a significant advantage when the application requires load holding.

It provides an additional mechanical holding function that can be useful for vertical or gravity-loaded axes.

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12.3 High-Resolution Absolute Feedback

Absolute multi-turn feedback provides detailed position information for the servo control system.

This is beneficial in applications requiring repeatable positioning and controlled motion.

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12.4 20 mm/rev Linear Travel

The 20 mm/rev pitch provides a relatively large amount of linear travel for each motor revolution.

This can help achieve faster linear movement without requiring extremely high motor speed.

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12.5 1.45 kW Power Rating

The 1.45 kW rating provides a useful balance between motor size and available mechanical output for medium-duty motion applications.

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12.6 Compact Servo-Motor Architecture

The MPL family is designed around low-inertia servo-motor technology.

Lower motor inertia can be beneficial in applications requiring frequent acceleration and deceleration because the drive does not have to accelerate as much rotating mass.

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12.7 Suitable for Replacement Applications

The X226 is specifically identified as an electric-cylinder replacement motor.

This makes it particularly useful when maintaining or replacing an existing compatible machine rather than redesigning the complete motion system.

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13. X226 Compared with X225

The X225 and X226 are closely related models.

The primary difference is the brake configuration.

Parameter	MPL-B420F-M-X225	MPL-B420F-M-X226
Product Type	Electric Cylinder Replacement Motor	Electric Cylinder Replacement Motor
Motor Family	MPL-B420F	MPL-B420F
Voltage	460 VAC	460 VAC
Power	Approximately 1.45 kW	Approximately 1.45 kW
Maximum Speed	Approximately 3150 RPM	Approximately 3150 RPM
Torque	Approximately 4.74 N·m	Approximately 4.74 N·m
Ball-Screw Pitch	20.0 mm/rev	20.0 mm/rev
Feedback	Absolute Multi-Turn	Absolute Multi-Turn
Brake	None	24 V DC Brake
Primary Difference	Non-brake version	Brake-equipped version
Approx. Weight	Configuration-dependent	Approximately 6.12 kg

The X226 is therefore the brake-equipped counterpart of the X225 in the same B420F 20 mm-pitch electric-cylinder replacement configuration.

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14. Five Related or Same-Series Models

The following models are closely related electric-cylinder replacement motors within the same general MPL family.

Model	Product Configuration	Brake	Ball-Screw Pitch	Feedback	Typical Application	Approx. Dimensions	Weight
MPL-B220F-V-X221	Electric Cylinder Replacement Motor	No	12.7 mm/rev	Absolute / V-series configuration	Compact linear actuator	Configuration-dependent	Verify exact configuration
MPL-B220F-V-X222	Electric Cylinder Replacement Motor	24 V DC	12.7 mm/rev	Absolute / V-series configuration	Vertical or load-holding axis	Configuration-dependent	Verify exact configuration
MPL-B330F-M-X223	Electric Cylinder Replacement Motor	No	10.0 mm/rev	Absolute Multi-Turn	Medium-duty linear motion	Size/configuration-dependent	Verify exact configuration
MPL-B330F-M-X224	Electric Cylinder Replacement Motor	24 V DC	10.0 mm/rev	Absolute Multi-Turn	Brake-equipped linear motion	Size/configuration-dependent	Verify exact configuration
MPL-B420F-M-X225	Electric Cylinder Replacement Motor	No	20.0 mm/rev	Absolute Multi-Turn	Higher-speed linear motion	Approx. 115 mm frame class	Approx. 2.8 kg
MPL-B420F-M-X226	Electric Cylinder Replacement Motor	24 V DC	20.0 mm/rev	Absolute Multi-Turn	Higher-speed linear motion with load holding	Approx. 115 mm frame class	Approx. 6.12 kg

The X221/X222, X223/X224, and X225/X226 pairs are specifically associated with different electric-cylinder configurations and ball-screw pitches. The X226 is the brake-equipped counterpart to the X225.

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15. Five Representative Same-Brand MPL Models

The following models are representative MPL servo motors that are useful for comparison when selecting a motor with different torque, power, speed, or physical-size requirements.

Model	Motor Type	Maximum Speed	Continuous Torque	Peak Torque	Power	Approx. Weight	Dimensions / Frame Information
MPL-B310P	Low-Inertia Rotary Servo Motor	5000 RPM	1.58 N·m	3.61 N·m	0.77 kW	2.7 kg	Frame/stack configuration-dependent
MPL-B320P	Low-Inertia Rotary Servo Motor	5000 RPM	3.05 N·m	7.91 N·m	1.5 kW	3.7 kg	Frame/stack configuration-dependent
MPL-B330P	Low-Inertia Rotary Servo Motor	5000 RPM	4.18 N·m	11.1 N·m	1.8 kW	4.6 kg	Frame/stack configuration-dependent
MPL-B420P	Low-Inertia Rotary Servo Motor	5000 RPM	4.74 N·m	13.5 N·m	1.9 kW	4.3 kg	B420 frame class; exact stack configuration-dependent
MPL-B430P	Low-Inertia Rotary Servo Motor	5000 RPM	6.55 N·m	19.8 N·m	2.2 kW	5.5 kg	B430 frame class; exact stack configuration-dependent

Published MPL technical data lists these motor families with the performance values shown above.

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16. Comparison of Related MPL Motor Performance

Model	Speed	Continuous Torque	Peak Torque	Power	Weight
MPL-B310P	5000 RPM	1.58 N·m	3.61 N·m	0.77 kW	2.7 kg
MPL-B320P	5000 RPM	3.05 N·m	7.91 N·m	1.5 kW	3.7 kg
MPL-B330P	5000 RPM	4.18 N·m	11.1 N·m	1.8 kW	4.6 kg
MPL-B420P	5000 RPM	4.74 N·m	13.5 N·m	1.9 kW	4.3 kg
MPL-B430P	5000 RPM	6.55 N·m	19.8 N·m	2.2 kW	5.5 kg

These models illustrate the broader MPL performance range. The rotary MPL-B420P, for example, has the same published continuous torque value of 4.74 N·m as the B420F electric-cylinder replacement configuration, but its mechanical application and rated operating characteristics are different.

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17. Selection Guide

When selecting the MPL-B420F-M-X226, several factors should be checked before installation.

Motor Power

Confirm that the approximately 1.45 kW motor power is sufficient for the required load, acceleration, duty cycle, and operating speed.

Linear Travel

The 20 mm/rev screw pitch should be matched to the required linear speed and positioning range.

Load

The actual actuator load should be calculated from mass, acceleration, friction, orientation, and external process forces.

Vertical Axis

For vertical applications, the 24 V brake configuration is important because it provides a holding function when servo torque is unavailable.

Feedback Compatibility

The servo drive and controller must support the encoder and feedback configuration associated with the motor.

Drive Compatibility

The motor should be paired with a compatible servo amplifier and properly configured motor parameters.

Mechanical Interface

The mounting pattern, cylinder interface, shaft arrangement, connector arrangement, and overall envelope must be checked against the existing equipment.

Environmental Conditions

Temperature, contamination, moisture, vibration, shock, and enclosure requirements should be evaluated before installation.

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18. Installation Considerations

The MPL-B420F-M-X226 should be installed as part of a properly matched servo-motion system.

Electrical installation should include appropriate motor power connections, feedback connections, brake wiring, grounding, and protection.

The 24 V brake circuit should be controlled according to the requirements of the servo system. Brake release and motor torque should be coordinated so that the actuator does not unintentionally move when the brake is released.

For vertical axes, the brake should not be considered the only safety measure. Mechanical load behavior, emergency-stop requirements, safety circuits, and machine-specific protective devices should also be evaluated.

The motor should also be mounted so that sufficient heat dissipation is available. Excessive ambient temperature or restricted airflow can reduce available continuous performance.

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19. Maintenance

Routine maintenance should include inspection of:

• Motor mounting hardware
• Electrical connectors
• Feedback cables
• Brake wiring
• Grounding connections
• Mechanical coupling or cylinder interface
• Signs of overheating
• Abnormal vibration
• Unusual operating noise
• Positioning accuracy
• Brake holding performance
• Cable insulation
• Mechanical wear

Because the motor is part of an electric-cylinder system, maintenance should consider the entire actuator rather than only the motor.

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20. Typical Industrial Uses

The MPL-B420F-M-X226 can be considered for:

Application	Typical Motion Requirement
Automated Assembly	Positioning, insertion, pressing
Packaging	Product transfer and positioning
Material Handling	Linear transfer and lifting
Vertical Axis	Positioning with load holding
Machine Tools	Auxiliary linear positioning
Robotics	Controlled linear actuator movement
Converting Machinery	Repetitive linear positioning
Production Lines	Automated transfer
Inspection Equipment	Controlled positioning
Automated Fixtures	Clamping and positioning
Pick-and-Place Systems	Linear transfer
Process Machinery	Repeated servo-controlled movement

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21. Key Product Advantages at a Glance

Advantage	Description
Low-Inertia Servo Design	Supports responsive acceleration and deceleration
1.45 kW Power	Suitable for medium-duty motion applications
3150 RPM Speed	Provides substantial motor operating speed
4.74 N·m Torque	Provides useful servo output for electric-cylinder applications
20 mm/rev Pitch	Supports relatively fast linear movement
Absolute Multi-Turn Feedback	Enables precise position feedback
24 V Brake	Provides mechanical load holding
MP-Series Compatibility	Designed for integration into compatible servo systems
Electric-Cylinder Replacement Design	Useful for maintenance and replacement applications
Industrial Construction	Designed for demanding automated machinery
Compact Motor Architecture	Helps integrate servo motion into machinery with limited space

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22. Final Technical Summary

The MPL-B420F-M-X226 is a brake-equipped MPL low-inertia servo motor configured as an electric-cylinder replacement motor.

Its main characteristics are approximately 1.45 kW power, 3150 RPM maximum speed, 4.74 N·m torque, 460 VAC three-phase operation, absolute multi-turn feedback, a 20 mm/rev ball-screw configuration, and a 24 V DC holding brake.

The motor belongs to the MP-Series / MPL low-inertia servo motor family and is intended for controlled linear-motion applications.

The X226 is especially relevant when an existing electric-cylinder system requires a replacement motor with an integrated brake. Its closest counterpart is the X225, which uses the same general B420F 20 mm-pitch configuration but without the 24 V brake.

The brake-equipped design makes the X226 particularly suitable for vertical or gravity-loaded axes where maintaining the actuator position after servo power removal is important.

For replacement work, the most important checks are the exact motor model, electric-cylinder compatibility, ball-screw pitch, feedback type, brake configuration, mounting interface, overall dimensions, motor weight, servo-drive compatibility, and the electrical requirements of the existing machine.

Core Specification Summary

Item	MPL-B420F-M-X226
Brand	Allen-Bradley
Product Family	MP-Series
Product Series	MPL Low-Inertia Servo Motors
Model	MPL-B420F-M-X226
Product Type	Electric Cylinder Replacement Servo Motor
Voltage	460 VAC
Phase	3 Phase
Power	1.45 kW
Maximum Speed	3150 RPM
Torque	4.74 N·m
Current	6.13 A
Frequency	0–210 Hz
Feedback	Absolute Multi-Turn High-Resolution
Brake	24 V DC
Ball-Screw Pitch	20.0 mm/rev
Frame / Size	Size 63 / approximately 115 mm frame class
Magnet Stack	50.8 mm / 2 in.
Dimensions	Configuration-dependent; approximately 115 mm frame class
Weight	Approximately 6.12 kg
Typical Function	Electric-cylinder linear motion
Typical Applications	Automation, packaging, material handling, assembly, vertical axes, machine tools
Closest Related Model	MPL-B420F-M-X225
Brake Counterpart	MPL-B420F-M-X225 is the corresponding non-brake configuration