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Allen-Bradley MPL-B220F-V-X221 Servo Motor

1. Product Overview

The Allen-Bradley MPL-B220F-V-X221 is a low-inertia brushless AC servo motor designed as a replacement motor for MP-Series electric cylinder applications.

It belongs to the MPL Low-Inertia Brushless Servo Motor family and is specifically configured for use with MPAR electric cylinders. The X221 designation identifies the dedicated replacement-motor configuration rather than a standard general-purpose rotary servo motor.

The MPL-B220F-V-X221 is a 460 V-class servo motor, using a 75 mm frame size, a 50.8 mm stack length, and a nominal maximum rated speed of approximately 3000 rpm. It is associated with the 12.7 mm/rev (0.50 in./rev) screw-pitch configuration and the non-brake version of the MPAR electric cylinder family.

This makes the motor particularly suitable for industrial equipment where rotary servo motion must be converted into controlled linear movement through an integrated electric-cylinder mechanism.

The X221 is therefore best understood as a dedicated replacement motor for an MP-Series electric cylinder, rather than simply another version of a conventional MPL rotary servo motor.

2. Brand

Brand: Allen-Bradley

Product Family: MPL Low-Inertia Brushless Servo Motors

Product Type: Electric-cylinder replacement servo motor

Motor Technology: Brushless permanent-magnet AC servo

Voltage Class: 460 V

Frame Size: 2 / approximately 75 mm

Stack Length: 20 / approximately 50.8 mm

Rated Speed: Approximately 3000 rpm

Brake: None

Screw Pitch: 12.7 mm/rev (0.50 in./rev)

Primary Mechanical Application: MPAR electric cylinder

3. Product Series

The MPL-B220F-V-X221 belongs to the MPL Low-Inertia Brushless Servo Motor Series.

The MPL family is designed for industrial servo applications that require controlled speed, acceleration, positioning, and repeatable movement.

The series covers a wide range of motor sizes, voltage classes, stack lengths, feedback configurations, and mechanical arrangements.

The X221 is a specialized configuration within the family. Its catalog designation indicates that it is intended to replace the motor used in a compatible MPAR electric-cylinder configuration.

This is important because the X221 should not automatically be treated as interchangeable with every motor carrying an MPL-B220 designation. The complete model number identifies the electrical and mechanical configuration.

4. Detailed Technical Parameters

Parameter	Specification
Model	MPL-B220F-V-X221
Brand	Allen-Bradley
Product family	MPL Low-Inertia Brushless Servo Motors
Product type	Electric Cylinder Replacement Motor
Motor construction	Brushless AC servo motor
Motor design	Low-inertia
Voltage class	460 V
Nominal supply class	460 V AC
Frame size	Frame 2
Frame dimension	Approx. 75 mm (2.95 in.)
Stack length code	20
Stack length	Approx. 50.8 mm (2.00 in.)
Rated speed	Approx. 3000 rpm
Screw pitch	12.7 mm/rev (0.50 in./rev)
Brake	None
Mechanical application	MPAR electric cylinder
Replacement designation	X221
Feedback	Servo feedback configuration
Servo operation	Closed-loop
Motor type	Permanent-magnet brushless servo
Rotor design	Low inertia
Dimensions	Approx. 75 mm frame; 50.8 mm stack; complete installation envelope depends on assembly
Weight	Approx. 2.55 kg
Weight in pounds	Approx. 5.63 lb
Installation	Electric-cylinder specific
Motion type	Rotary motor converted to linear motion
Typical application	Industrial linear positioning
Axis type	Horizontal or appropriately engineered vertical/inclined axis
Brake requirement	Non-brake configuration
Environment	Industrial automation
Primary purpose	Replacement motor for compatible electric cylinder

The 75 mm frame dimension and 50.8 mm stack length are important mechanical identification characteristics of this model.

The listed product weight is approximately 2.55 kg, which is a useful value for handling, shipping, and machine-load calculations. The actual installed mass of the complete electric-cylinder assembly will naturally be higher because the cylinder also contains the mechanical transmission and structural components.

5. Model Number Explanation

The model number MPL-B220F-V-X221 contains several useful identification elements.

MPL identifies the low-inertia servo motor family.

B identifies the 460 V-class family configuration.

220F identifies the motor size and specific motor construction.

V identifies the applicable configuration used with the associated electric-cylinder system.

X221 identifies the dedicated replacement-motor version.

The X221 suffix is particularly important.

It distinguishes this motor from standard MPL-B220 rotary servo models and from other replacement motors within the electric-cylinder family.

For replacement work, the complete MPL-B220F-V-X221 catalog number should therefore be used rather than selecting a motor solely from the MPL-B220 family designation.

6. Product Introduction

The MPL-B220F-V-X221 is designed to provide servo-controlled rotary motion to an integrated electric-cylinder mechanism.

An electric cylinder uses a rotary servo motor together with a mechanical screw and associated components to produce controlled linear movement.

Instead of installing a separate motor, coupling, gearbox, screw, bearings, and mounting arrangement individually, the electric-cylinder concept combines these functions into a coordinated linear actuator.

The servo motor controls the rotary input.

The screw converts that rotary movement into linear movement.

The machine controller commands the required position and velocity.

The servo drive continuously regulates the motor so that the actual movement follows the commanded motion.

This arrangement is particularly useful in automated machinery where controlled linear movement is required in a compact mechanical package.

7. MPAR Electric-Cylinder Relationship

The MPL-B220F-V-X221 is associated with the MPAR-B2xxxF-x2x electric-cylinder configuration.

The important characteristics of this configuration include:

• 400/460 V-class electrical architecture.
• Frame size 40 mechanical class for the electric cylinder.
• 12.7 mm/rev screw pitch.
• Non-brake motor configuration.
• MPL-B220F-V-X221 replacement motor.

This relationship is important because the X221 is not simply a general replacement for every 460 V servo motor.

The electric-cylinder configuration determines the required motor, screw pitch, mechanical interface, and overall motion characteristics.

8. 12.7 mm/rev Screw Pitch

The 12.7 mm/rev screw pitch is one of the most important characteristics of the X221 configuration.

A screw pitch of 12.7 mm/rev means that one complete revolution of the screw theoretically corresponds to approximately 12.7 mm of linear movement.

Compared with a 5 mm/rev screw, a 12.7 mm/rev configuration provides substantially more linear travel per revolution.

This can be useful where the machine needs greater linear travel speed and does not require the same mechanical travel-per-revolution ratio as a fine-pitch screw.

The actual linear speed also depends on motor speed, screw efficiency, acceleration limits, load, and control-system limitations.

9. Linear Motion Conversion

The motor itself produces rotary motion.

The electric cylinder converts this rotary motion into linear displacement.

For example, at a theoretical screw speed of 3000 rpm and a 12.7 mm/rev pitch, the simple theoretical screw travel rate would be:

3000 × 12.7 mm/rev = 38,100 mm/min

or approximately:

38.1 m/min

This is a theoretical mechanical calculation and should not be interpreted as the guaranteed operating speed of a complete electric cylinder.

Actual permissible linear speed depends on the complete actuator configuration, load, acceleration, lubrication, screw design, duty cycle, temperature, and machine operating conditions.

10. Low-Inertia Servo Design

One of the key characteristics of the MPL family is its low-inertia rotor design.

Low motor inertia allows the servo drive to accelerate and decelerate the motor efficiently.

This is particularly useful for applications involving:

• Repeated indexing.
• Rapid acceleration.
• Frequent stops and starts.
• Short positioning cycles.
• High-frequency motion profiles.
• Repetitive production movement.
• Precise velocity changes.

The low-inertia design also helps the servo system respond quickly when the commanded motion changes.

11. Brushless AC Servo Construction

The MPL-B220F-V-X221 uses brushless AC servo motor technology.

Unlike traditional brushed motors, a brushless servo motor does not rely on mechanical brushes and a commutator to control rotor current.

Instead, electronic switching within the servo drive controls the motor windings.

This provides the characteristics required for modern industrial servo applications, including controlled speed, position feedback, acceleration, and deceleration.

12. Closed-Loop Motion Control

A servo system operates as a closed-loop control system.

The controller sends a motion command.

The servo drive processes that command.

The motor produces torque and movement.

Feedback reports the motor’s actual position and motion.

The control system then compares the commanded and actual values and continuously adjusts the motor.

This process allows the system to maintain controlled movement even when the mechanical load changes.

13. Main Product Advantages

13.1 Dedicated Replacement Configuration

The X221 is a dedicated replacement motor for compatible electric-cylinder systems.

This makes the model particularly useful for maintenance and replacement applications.

A technician can identify the original motor and use the corresponding X221 catalog number rather than trying to adapt an unrelated motor.

13.2 460 V-Class Operation

The 460 V-class configuration makes the X221 suitable for industrial servo systems designed around the corresponding high-voltage motor architecture.

It is particularly relevant to machines already using compatible 460 V-class servo drives.

13.3 75 mm Frame Size

The approximately 75 mm frame size provides a relatively compact motor package.

This allows the motor to be integrated into industrial linear-motion equipment without requiring an unnecessarily large motor body.

13.4 50.8 mm Stack Length

The 50.8 mm stack length places the X221 in a useful mid-size MPL motor configuration.

It provides a larger active motor package than shorter MPL-B210 configurations while remaining within the same general 75 mm frame class.

13.5 3000 rpm Operating Class

The approximately 3000 rpm rating is appropriate for electric-cylinder applications where controlled linear movement is required.

Combined with the 12.7 mm/rev screw pitch, the motor can provide substantial linear travel without requiring extremely high rotational speed.

13.6 12.7 mm/rev Mechanical Configuration

The 12.7 mm/rev screw pitch provides a relatively high amount of linear travel per motor revolution.

This can be useful in material handling, transfer, adjustment, positioning, and other applications where linear travel speed is important.

13.7 Compact Electric-Cylinder Architecture

The motor forms part of an integrated electric-cylinder system.

This approach can reduce mechanical complexity compared with constructing a linear axis from separate motor, coupling, screw, bearing, and mounting components.

14. Product Applications

The MPL-B220F-V-X221 is suitable for applications using compatible MPAR electric-cylinder systems.

Typical application areas include:

Application	Typical Function	Suitability
Automated assembly	Linear insertion and positioning	High
Material handling	Product transfer	High
Packaging	Product positioning and movement	High
Pick-and-place	Controlled linear travel	High
Machine tooling	Tool positioning	High
Inspection systems	Sensor or fixture movement	High
Manufacturing equipment	Repetitive axis motion	High
Conveyor mechanisms	Linear adjustment	Applicable
Automated fixtures	Clamping and positioning	High
Dispensing equipment	Controlled linear movement	Applicable
Cutting systems	Positioning and feed	Applicable
Transfer equipment	Repetitive linear transfer	High
Production machinery	Servo-controlled positioning	High
Test equipment	Controlled actuator movement	High

15. Automated Assembly Applications

Assembly machines frequently require precise linear movement.

A component may need to be inserted into another component, moved into a fixture, positioned beneath a tool, or transferred from one station to another.

The electric-cylinder architecture provides a compact way of producing this type of controlled linear movement.

The servo motor allows the machine to control acceleration, velocity, position, and stopping behavior.

16. Material Handling Applications

Material-handling systems often require repeated linear movement.

Examples include:

• Product transfer.
• Tray movement.
• Fixture movement.
• Stop positioning.
• Guide adjustment.
• Lift mechanisms.
• Product alignment.

The X221 can be used for these functions when the corresponding electric-cylinder configuration meets the required load and travel conditions.

17. Packaging Applications

Packaging machinery frequently operates through repetitive motion cycles.

A servo-driven electric cylinder can be used for:

• Product feeding.
• Positioning.
• Product separation.
• Cutting.
• Sealing movement.
• Indexing.
• Adjustment.
• Transfer.

The low-inertia servo motor is useful in these applications because the machine may need to accelerate and decelerate repeatedly during each production cycle.

18. Inspection Equipment

Inspection systems often need to move sensors, cameras, fixtures, or workpieces to predetermined locations.

The X221’s servo-based motion architecture can provide controlled movement for these functions.

Repeatability depends on the complete actuator, feedback system, mechanical structure, servo tuning, and machine controller.

19. Machine Tool Applications

In machine-tool-related automation, electric cylinders can be used for:

• Tool positioning.
• Fixture adjustment.
• Workpiece transfer.
• Clamping mechanisms.
• Part loading.
• Part unloading.
• Auxiliary linear axes.

The suitability of the X221 depends on the actual force, speed, duty cycle, and environmental requirements of the machine.

20. Vertical-Axis Applications

The X221 itself is a non-brake configuration.

This distinction is important when the electric cylinder is used on a vertical axis.

If the load can move due to gravity when servo torque is removed, additional mechanical holding or braking provisions may be necessary.

The X221 should therefore not be automatically selected for a gravity-loaded vertical axis simply because its motor torque and speed appear suitable.

For applications requiring an integrated brake configuration, the related MPL-B220F-V-X222 is the corresponding brake-equipped replacement motor.

21. Mechanical Parameters

Mechanical Parameter	MPL-B220F-V-X221
Model	MPL-B220F-V-X221
Motor frame	Frame 2
Frame diameter/class	Approx. 75 mm
Frame dimension	75 mm / 2.95 in.
Stack code	20
Stack length	50.8 mm / 2.00 in.
Screw pitch	12.7 mm/rev
Brake	None
Motor construction	Brushless
Motor inertia	Low
Installation	Electric-cylinder specific
Shaft/coupling	Integrated application-specific arrangement
Overall assembly dimensions	Dependent on complete electric-cylinder configuration
Motor weight	Approx. 2.55 kg
Complete actuator weight	Higher than motor-only weight and dependent on cylinder configuration

The 75 mm frame and 50.8 mm stack are the key motor dimensions.

The complete installation envelope must be evaluated using the electric-cylinder mechanical configuration because the X221 is intended to operate as part of that assembly.

22. Electrical Parameters

Electrical Parameter	Specification
Model	MPL-B220F-V-X221
Motor voltage class	460 V
Supply type	AC
Motor technology	Brushless permanent-magnet servo
Control type	Servo drive controlled
Feedback	Closed-loop servo feedback
Rated speed	Approx. 3000 rpm
Brake	None
Motor family	MPL
Application voltage class	460 V-class industrial servo systems
Motor construction	Low-inertia
Intended drive	Compatible servo drive system
Motion type	Servo-controlled rotary motion converted to linear motion

The electrical characteristics should always be considered together with the servo drive.

A motor should not be selected only because the nominal voltage appears similar.

23. Dimensions and Weight

Parameter	Value
Model	MPL-B220F-V-X221
Frame size	Approx. 75 mm
Frame dimension	Approx. 75 mm / 2.95 in.
Stack length	Approx. 50.8 mm / 2.00 in.
Screw pitch	12.7 mm/rev
Approx. motor weight	2.55 kg
Approx. motor weight in lb	5.63 lb
Complete cylinder dimensions	Configuration dependent
Complete cylinder weight	Configuration dependent

For machine design and replacement work, the 2.55 kg motor weight should be treated separately from the total electric-cylinder assembly weight.

The complete actuator will include the cylinder housing, screw, bearings, mechanical transmission components, and other hardware.

24. Five Closely Related Models

The following five models are useful related selections within the same MPL replacement-motor and electric-cylinder family.

Model	Voltage Class	Frame	Screw Pitch	Brake	Speed / Configuration	Dimensions	Weight
MPL-B220F-V-X221	400/460 V class	75 mm	12.7 mm/rev	No	3000 rpm	75 mm frame; 50.8 mm stack	2.55 kg
MPL-B220F-V-X222	400/460 V class	75 mm	12.7 mm/rev	24 V brake	3000 rpm class	75 mm frame; 50.8 mm stack class	Approx. 2.6 kg class
MPL-A220F-V-X209	200/230 V class	75 mm	12.7 mm/rev	No	3000 rpm class	75 mm frame; 50.8 mm stack class	Approx. 2.5 kg class
MPL-A220F-V-X210	200/230 V class	75 mm	12.7 mm/rev	24 V brake	3000 rpm class	75 mm frame; 50.8 mm stack class	Approx. 2.6 kg class
MPL-B1530F-V-X220	400 V class	40 mm class	5 mm/rev	24 V brake	Electric-cylinder replacement	Configuration dependent	Approx. 2 kg class

The closest model to the X221 is MPL-B220F-V-X222 because it uses the same basic B220F replacement-motor configuration but adds a 24 V brake.

The A220F models are useful when the application uses the lower-voltage motor family.

The B1530F models are smaller replacement-motor configurations intended for a different electric-cylinder size and screw arrangement.

25. MPL-B220F-V-X221 vs MPL-B220F-V-X222

Parameter	MPL-B220F-V-X221	MPL-B220F-V-X222
Product type	Electric-cylinder replacement motor	Electric-cylinder replacement motor
Voltage class	400/460 V	400/460 V
Frame	75 mm	75 mm
Stack	50.8 mm	50.8 mm
Screw pitch	12.7 mm/rev	12.7 mm/rev
Brake	No	24 V brake
Speed class	3000 rpm	3000 rpm class
Weight	Approx. 2.55 kg	Approx. 2.6 kg class
Main difference	Non-brake	Brake-equipped

These two models are particularly important when replacing a motor.

The machine configuration must determine which version is required.

26. MPL-A220F-V-X209

The MPL-A220F-V-X209 is the lower-voltage counterpart in the same general electric-cylinder replacement group.

Parameter	MPL-A220F-V-X209
Model	MPL-A220F-V-X209
Voltage class	200 V
Frame	75 mm class
Screw pitch	12.7 mm/rev
Brake	None
Motor type	Low-inertia brushless servo
Application	Electric cylinder
Stack length	Approx. 50.8 mm class
Dimensions	Approx. 75 mm frame; configuration-specific overall length
Weight	Approx. 2.5 kg class

The A-series and B-series motors should not be interchanged without confirming the complete electrical system.

27. MPL-A220F-V-X210

The MPL-A220F-V-X210 is the brake-equipped counterpart to the A220F non-brake configuration.

Parameter	MPL-A220F-V-X210
Model	MPL-A220F-V-X210
Voltage class	200 V
Frame	75 mm class
Screw pitch	12.7 mm/rev
Brake	24 V brake
Motor type	Low-inertia brushless servo
Application	Electric cylinder
Stack length	Approx. 50.8 mm class
Dimensions	Approx. 75 mm frame; configuration-specific
Weight	Approx. 2.6 kg class

This model is useful for machines requiring a brake but operating with the lower-voltage A-series motor architecture.

28. MPL-B1530F-V-X219

The MPL-B1530F-V-X219 is a smaller-frame B-series replacement motor used with another electric-cylinder configuration.

Parameter	MPL-B1530F-V-X219
Model	MPL-B1530F-V-X219
Voltage class	400 V
Frame class	Approx. 40 mm
Screw pitch	5 mm/rev
Brake	None
Motor type	Low-inertia brushless servo
Application	Electric cylinder
Dimensions	Approx. 40 mm frame class; complete envelope configuration dependent
Weight	Approx. 2 kg class
Replacement designation	X219

This model is mechanically different from the X221 and should be treated as a separate electric-cylinder configuration.

29. MPL-B1530F-V-X220

The MPL-B1530F-V-X220 provides the brake-equipped version of the B1530F configuration.

Parameter	MPL-B1530F-V-X220
Model	MPL-B1530F-V-X220
Voltage class	400 V
Frame class	Approx. 40 mm
Screw pitch	5 mm/rev
Brake	24 V brake
Motor type	Low-inertia brushless servo
Application	Electric cylinder
Dimensions	Approx. 40 mm frame class; configuration dependent
Weight	Approx. 2 kg class
Replacement designation	X220

This model is useful when the machine uses the smaller B-series electric-cylinder configuration and requires a brake.

30. Five Popular Same-Brand MPL Models

For comparison with the X221, the following five standard MPL servo motors represent commonly encountered configurations within the same general motor family.

Model	Voltage Class	Frame	Stack	Speed	Feedback	Brake	Dimensions	Approx. Weight
MPL-B210V-VJ72AA	460 V	75 mm	25.4 mm	8000 rpm	Absolute servo feedback	No	75 mm frame; 25.4 mm stack	~1.4 kg
MPL-B210V-VJ74AA	460 V	75 mm	25.4 mm	8000 rpm	Absolute servo feedback	Yes/configuration dependent	75 mm frame; 25.4 mm stack	~1.5 kg
MPL-B220T-VJ72AA	460 V	75 mm	50.8 mm	6000 rpm	Absolute servo feedback	No	75 mm frame; 50.8 mm stack	~2.0 kg
MPL-B230P-VJ72AA	460 V	75 mm	76.2 mm	5000 rpm	Absolute servo feedback	No	75 mm frame; 76.2 mm stack	~2.6 kg
MPL-B320P-MJ72AA	460 V	100 mm	50.8 mm	5000 rpm	Absolute servo feedback	No	100 mm frame; 50.8 mm stack	~4.0 kg

These models are standard rotary MPL servo motors rather than direct replacements for the X221.

They are included because they illustrate the broader range of the MPL family and provide useful reference points when selecting servo motors for different machine architectures.

31. MPL-B210V-VJ72AA

The MPL-B210V-VJ72AA is a compact 75 mm-frame MPL servo motor.

Parameter	MPL-B210V-VJ72AA
Model	MPL-B210V-VJ72AA
Voltage class	460 V
Frame	75 mm
Stack	25.4 mm
Speed	8000 rpm
Motor type	Low-inertia brushless servo
Feedback	High-resolution absolute configuration
Brake	No
Dimensions	Approx. 75 mm frame; 25.4 mm stack
Weight	Approx. 1.4 kg
Application	General servo motion

The B210V is considerably shorter and lighter than the X221.

It is therefore useful for applications where a smaller rotary motor is appropriate, but it should not be treated as a direct replacement for the X221 electric-cylinder motor.

32. MPL-B210V-VJ74AA

The MPL-B210V-VJ74AA is another B210-family servo configuration.

Parameter	MPL-B210V-VJ74AA
Model	MPL-B210V-VJ74AA
Voltage class	460 V
Frame	75 mm
Stack	25.4 mm
Speed	8000 rpm class
Motor type	Low-inertia brushless servo
Feedback	Absolute servo feedback
Brake	Configuration dependent
Dimensions	Approx. 75 mm frame; 25.4 mm stack
Weight	Approx. 1.5 kg class
Application	General industrial servo motion

This model belongs to the same general MPL family but has a substantially different mechanical configuration from the X221.

33. MPL-B220T-VJ72AA

The MPL-B220T-VJ72AA is a larger 75 mm-frame motor with a 50.8 mm stack.

Parameter	MPL-B220T-VJ72AA
Model	MPL-B220T-VJ72AA
Voltage class	460 V
Frame	75 mm
Stack	50.8 mm
Speed	6000 rpm
Motor type	Low-inertia brushless servo
Feedback	Absolute servo feedback
Brake	No
Dimensions	Approx. 75 mm frame; 50.8 mm stack
Weight	Approx. 2.0 kg
Application	General industrial servo motion

The B220T and X221 share the same broad 75 mm / 50.8 mm physical motor class, but their mechanical applications and complete catalog configurations are different.

This is a good example of why model-number matching is important when replacing an existing motor.

34. MPL-B230P-VJ72AA

The MPL-B230P-VJ72AA uses a longer 76.2 mm stack.

Parameter	MPL-B230P-VJ72AA
Model	MPL-B230P-VJ72AA
Voltage class	460 V
Frame	75 mm
Stack	76.2 mm
Speed	5000 rpm class
Motor type	Low-inertia brushless servo
Feedback	Absolute servo feedback
Brake	No
Dimensions	Approx. 75 mm frame; 76.2 mm stack
Weight	Approx. 2.6 kg class
Application	Higher-capacity servo motion

The B230P demonstrates how the same general frame class can be combined with a longer motor stack to achieve a different motor performance range.

35. MPL-B320P-MJ72AA

The MPL-B320P-MJ72AA belongs to the larger 100 mm-frame class.

Parameter	MPL-B320P-MJ72AA
Model	MPL-B320P-MJ72AA
Voltage class	460 V
Frame	100 mm
Stack	50.8 mm
Speed	5000 rpm class
Motor type	Low-inertia brushless servo
Feedback	Absolute servo feedback
Brake	No
Dimensions	Approx. 100 mm frame; 50.8 mm stack
Weight	Approx. 4.0 kg class
Application	Higher-capacity industrial servo motion

The B320P is substantially larger than the X221’s 75 mm frame and should therefore be considered a different mechanical size class.

36. Comparison of Related and Popular Models

Model	Primary Application	Voltage	Screw Pitch / Stack	Brake	Approx. Weight	Dimensions
MPL-B220F-V-X221	Electric-cylinder replacement	460 V	12.7 mm/rev	No	2.55 kg	75 mm frame / 50.8 mm stack
MPL-B220F-V-X222	Electric-cylinder replacement	460 V	12.7 mm/rev	Yes	~2.6 kg	75 mm / 50.8 mm class
MPL-A220F-V-X209	Electric-cylinder replacement	200 V	12.7 mm/rev	No	~2.5 kg	75 mm / 50.8 mm class
MPL-A220F-V-X210	Electric-cylinder replacement	200 V	12.7 mm/rev	Yes	~2.6 kg	75 mm / 50.8 mm class
MPL-B1530F-V-X220	Electric-cylinder replacement	400 V	5 mm/rev	Yes	~2 kg class	~40 mm frame
MPL-B210V-VJ72AA	Rotary servo	460 V	25.4 mm stack	No	~1.4 kg	75 mm / 25.4 mm
MPL-B220T-VJ72AA	Rotary servo	460 V	50.8 mm stack	No	~2.0 kg	75 mm / 50.8 mm
MPL-B230P-VJ72AA	Rotary servo	460 V	76.2 mm stack	No	~2.6 kg	75 mm / 76.2 mm
MPL-B320P-MJ72AA	Rotary servo	460 V	50.8 mm stack	No	~4.0 kg	100 mm / 50.8 mm

37. Important Difference Between X221 and Standard MPL-B220 Motors

The MPL-B220F-V-X221 should not be selected or replaced solely because another motor has the same general 75 mm frame and 50.8 mm stack dimensions.

For example, the standard MPL-B220T family is designed as a rotary servo motor configuration.

The X221 is a dedicated replacement motor associated with an electric-cylinder application.

Although the physical motor size may appear similar, the complete mechanical interface and application configuration can be different.

This distinction is extremely important in industrial maintenance.

38. Advantages for Machine Designers

The X221 provides several practical advantages when designing around a compatible electric-cylinder architecture.

First, the motor is already associated with a coordinated linear-motion system.

Second, the 12.7 mm/rev screw pitch provides useful linear travel per motor revolution.

Third, the 75 mm frame provides a relatively compact motor package.

Fourth, the low-inertia servo construction supports dynamic motion control.

Fifth, the standardized replacement-motor designation simplifies future maintenance.

39. Advantages for Maintenance

For maintenance departments, the dedicated X221 designation is valuable because it identifies the replacement motor required for the associated electric-cylinder configuration.

This can simplify spare-parts management.

A maintenance department can maintain a spare motor based on the complete machine configuration rather than attempting to determine motor compatibility from dimensions alone.

This is particularly useful for production equipment where unexpected servo failure can stop an entire production line.

40. Spare-Parts Management

A recommended spare-parts record for the X221 should include:

Spare-Part Information	Recommended Record
Model	MPL-B220F-V-X221
Motor family	MPL
Application	MPAR electric cylinder
Voltage class	460 V
Frame	75 mm
Stack	50.8 mm
Screw pitch	12.7 mm/rev
Brake	None
Weight	Approx. 2.55 kg
Feedback	Compatible servo feedback
Replacement purpose	Electric-cylinder motor
Installation	Existing compatible machine configuration
Storage requirement	Clean, dry industrial environment
Inspection before installation	Mechanical and electrical condition

41. Installation Considerations

Before installing the MPL-B220F-V-X221, the machine should be isolated from electrical power and stored mechanical energy.

The existing actuator should be inspected for:

• Mechanical wear.
• Screw condition.
• Bearing condition.
• Coupling condition.
• Mounting condition.
• Cable damage.
• Connector damage.
• Feedback faults.
• Drive alarms.
• Unusual vibration.

Replacing the motor without investigating the cause of the original failure may result in another motor failure.

42. Mechanical Alignment

Correct mechanical alignment is essential.

If the motor and mechanical transmission are not properly aligned, the system may experience:

• Increased vibration.
• Excessive bearing load.
• Increased noise.
• Servo following errors.
• Premature mechanical wear.
• Increased motor temperature.
• Reduced positioning performance.

The motor should therefore be installed according to the mechanical requirements of the corresponding electric-cylinder assembly.

43. Servo Tuning After Replacement

After replacing a servo motor, the servo system should be checked before returning the machine to normal production.

Important parameters include:

• Position error.
• Following error.
• Acceleration response.
• Deceleration response.
• Servo gain.
• Velocity response.
• Settling behavior.
• Mechanical vibration.
• Motor temperature.
• Current demand.
• Repeated positioning accuracy.

If the mechanical load has not changed and the correct replacement motor has been installed, the existing machine configuration may provide a useful starting point, but the final tuning should still be verified.

44. Environmental Considerations

The MPL-B220F-V-X221 is intended for industrial automation environments.

Environmental conditions should be considered carefully.

Important factors include:

• Ambient temperature.
• Humidity.
• Dust.
• Oil mist.
• Chemical exposure.
• Vibration.
• Shock.
• Installation altitude.
• Cable routing.
• Cooling conditions.

The motor should not be installed in an environment outside the permitted operating conditions of the complete servo system.

45. Application Selection Guide

Machine Requirement	X221 Suitability
460 V-class servo architecture	Suitable
12.7 mm/rev electric-cylinder configuration	Suitable
Non-brake electric cylinder	Suitable
75 mm motor frame	Suitable
50.8 mm motor stack	Suitable
Controlled linear positioning	Suitable
Repetitive indexing	Suitable
Automated assembly	Suitable
Material transfer	Suitable
Packaging machinery	Suitable
Inspection equipment	Suitable
Vertical load requiring integrated brake	Not the preferred configuration
Existing MPAR-B2xxxF-x2x system	Directly relevant
Generic rotary servo replacement	Not automatically interchangeable

46. Technical Summary

Category	MPL-B220F-V-X221
Model	MPL-B220F-V-X221
Brand	Allen-Bradley
Series	MPL Low-Inertia Brushless Servo Motors
Product category	Electric Cylinder Replacement Motor
Motor type	Brushless AC servo
Voltage class	460 V
Frame size	2
Frame dimension	75 mm
Stack code	20
Stack length	50.8 mm
Rated speed	3000 rpm
Screw pitch	12.7 mm/rev
Brake	None
Motor design	Low-inertia
Feedback	Servo feedback
Motion type	Rotary-to-linear
Associated actuator	MPAR electric cylinder
Approx. motor weight	2.55 kg
Dimensions	Approx. 75 mm frame × 50.8 mm stack; overall installation envelope configuration dependent
Main application	Industrial linear positioning
Typical machinery	Assembly, packaging, transfer, inspection, handling
Main advantage	Compact, dynamic servo-controlled linear motion

47. Final Product Description

The Allen-Bradley MPL-B220F-V-X221 is a specialized low-inertia brushless AC servo replacement motor designed for compatible MPAR electric-cylinder systems.

Its principal characteristics are a 460 V-class electrical configuration, approximately 75 mm frame size, 50.8 mm stack length, approximately 3000 rpm rated speed, 12.7 mm/rev screw-pitch application, and non-brake configuration.

The motor provides the rotary motion required by the electric-cylinder mechanism, while the screw converts that rotation into controlled linear movement.

The 12.7 mm/rev screw pitch gives the actuator a relatively high linear travel per motor revolution, making the configuration suitable for applications where useful linear speed and controlled positioning are both required.

The low-inertia MPL motor construction is well suited to servo applications involving repeated acceleration, deceleration, indexing, and positioning.

The approximately 2.55 kg motor weight also makes the motor relatively manageable for maintenance work, while the 75 mm frame and 50.8 mm stack provide a compact mechanical package.

The most important point when selecting the X221 is that it is a replacement motor for a specific electric-cylinder configuration. It should therefore be matched to the original actuator and machine architecture rather than being selected solely according to frame size.

The closest related model is the MPL-B220F-V-X222, which uses the same general B220F electric-cylinder motor configuration but adds a 24 V brake.

The MPL-A220F-V-X209 and MPL-A220F-V-X210 provide corresponding lower-voltage configurations, while other MPL replacement motors such as the B1530F family cover different electric-cylinder sizes and screw arrangements.

For comparison with standard rotary servo motors, the MPL-B210V-VJ72AA, MPL-B210V-VJ74AA, MPL-B220T-VJ72AA, MPL-B230P-VJ72AA, and MPL-B320P-MJ72AA represent different MPL configurations across several frame sizes, stack lengths, speeds, and applications.

In practical industrial use, the MPL-B220F-V-X221 is best viewed as a dedicated servo motor for electric-cylinder linear motion. Its combination of low inertia, 460 V-class operation, 75 mm frame size, 50.8 mm stack length, 12.7 mm/rev screw compatibility, and approximately 3000 rpm speed makes it well suited to automated equipment requiring controlled and repeatable linear movement.

For maintenance, the complete MPL-B220F-V-X221 catalog number should be retained in equipment records, and the voltage class, screw pitch, brake configuration, mechanical dimensions, feedback arrangement, and actuator type should all be confirmed before ordering a replacement.