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Honeywell M4185B1058 60 lb-in Two-Position Spring-Return Motor 24V/120V/230V 50/60Hz CW

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Special Price $1,947.84 Regular Price $2,162.10
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M4185B1058

The Honeywell M4185B1058 is a two-position, spring-return motor designed for use in HVAC systems. It operates on a variety of voltages (24V, 120V, or 230V) and delivers 60 lb-in of torque to rotate a damper or valve. When power is applied, the motor drives the shaft in one direction until it reaches its endpoint. Once power is removed, a spring returns the shaft to its original position. This spring-return feature ensures the damper or valve closes automatically in case of a power outage, potentially preventing unwanted heating or cooling. The M4185B1058 also includes an adjustable stroke from 90 to 160 degrees, allowing for customization depending on the specific application. Additionally, it boasts a built-in auxiliary switch that can be used to signal other equipment based on the motor's position. This motor is commonly found in 1heating, ventilation, and air conditioning systems, typically controlling dampers that regulate airflow throughout a building. By precisely positioning dampers, the M4185B1058 helps maintain consistent temperature and optimize comfort levels. It also contributes to energy efficiency by ensuring proper airflow and reducing unnecessary heating or cooling cycles.

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Motors & Capacitors, Motors & Components
Manufacturer:
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Specifications

  • Voltage/Electrical: 115V
  • RPM (Revolutions Per Minute): 1050 RPM
  • Horsepower(HP): 1 HP
  • Frequency: 60Hz
  • Weight: 13 Lbs

Damper and valve assemblies use motorized actuators to position connected components within HVAC systems. The Honeywell M4185B1058 provides the mechanical movement needed to position compatible dampers or valves. Its two-position, spring-return design supports movement between defined positions and return toward the normal position when electrical power is interrupted.

Two-Position Motorized Operation:
The motor converts electrical energy into mechanical movement to position the connected damper or valve. Its two-position operation moves the component between defined positions, while the specified torque provides the mechanical force needed for movement. The actuator's movement range must suit the connected component.

Spring-Return and Auxiliary Switching:
The spring-return mechanism moves the actuator toward its normal position when electrical power is interrupted. An internal auxiliary switch provides an additional switching function associated with the actuator's position. These features support component positioning and position-related control within the connected system.

Replacement Guidelines:
Replacement may be appropriate when the Honeywell M4185B1058 fails to complete the required damper or valve movement or its spring-return action no longer works as intended. Before ordering, compare the existing M4185B1058 part number and verified specifications with the requirements of the intended application.

Common Signs of Wear:

  • Damper or valve movement becomes slow or inconsistent
  • Motor fails to move the connected component
  • Unusual operating noise
  • Auxiliary switch responds intermittently
  • Connected damper or valve stops at an inconsistent position

Equipment Compatibility:
The Honeywell M4185B1058 is intended for compatible HVAC damper or valve applications requiring the corresponding two-position spring-return motor configuration. Before purchasing, verify the part number, electrical requirements, torque, stroke range, shaft rotation, and connected equipment requirements against the applicable parts documentation.

Technical Specifications:
Product Identification:
Brand: Honeywell
Part Number: M4185B1058
Product Type: Two-Position Spring-Return Motor

Electrical:
Voltage: 24-120/230V
Frequency: 50/60 Hz

Mechanical:
Torque: 60 lb-in
Shaft Rotation: CW

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Product Questions (7)
Customer Questions
What maintenance is required for the Honeywell M4185B1058 Motor?

Inspect the switch regularly for dirt, dust, and corrosion, cleaning contacts with a dry cloth. Test operation periodically to ensure proper switching. Tighten connections if loose, and follow safety precautions when working with live voltage.

What are common issues with the Honeywell M4185B1058 Motor?

  • Failure to actuate correctly.
  • Sticking or slow-moving contacts.
  • Electrical arcing or burnt terminals.
  • Intermittent signal or misfires.

What is the function of the Honeywell M4185B1058 Two-Position Spring-Return Motor?

It provides motorized movement to position a compatible damper or valve between defined positions and uses its spring-return mechanism to move toward the normal position when power is interrupted.

How does the spring-return mechanism affect motor operation?

When electrical power is interrupted, the spring-return mechanism moves the actuator toward its normal position, as determined by the actuator's configuration.

What does the 60 lb-in torque rating indicate?

The 60 lb-in rating specifies the motor's stated torque, which represents its rotational force for moving the connected component.

What is the purpose of the internal auxiliary switch?

The auxiliary switch provides an additional switching function associated with the actuator's position. Its exact role depends on the connected control circuit.

How can I verify whether the M4185B1058 is the correct replacement?

Compare the existing part number with the applicable equipment documentation and verify the required voltage configuration, torque, stroke range, shaft rotation, and control requirements before ordering.

Installation Steps

Step 1: Turn off power and confirm it is disconnected to avoid electrical shock.

Step 2: Mount the motor onto the damper or valve shaft securely.

Step 3: Align the shaft properly and tighten all set screws.

Step 4: Wire the motor according to the correct voltage diagram.

Step 5: Connect the auxiliary switch if needed for control integration.

Step 6: Restore power and test for proper operation and smooth movement.