Close this search box.
Mechanical Actuators
A Leader in Heat Transfer Components, Products and Systems

HMPB Series Linear Actuator

Duff Norton’s HMPB Series linear actuators are available in 250 lbs. and 500 lbs. capacity models. These heavy duty models feature 60 in-lbf of tube restraining torque and bi-directional ball-type brakes to hold loads in position. HMPB linear actuators operate on 115 VAC or 220 VAC power (varies by model), and are available with 3”, 6”, 12”, and 18” (76 mm, 152 mm, 304 mm, and 457 mm) strokes. 

Request a quote on HMPB Series linear actuators. Contact C.H. Bull for more information.

HMPB Series Linear Actuator Specifications 

  • Capacity: 250 lbs. (300 lbs. static load) or 500 lbs. (750 lbs. static load)
  • Speed: 0.6 to 1.4 in/sec (15 to 35 mm/sec)
  • Power: 115 VAC or 220 VAC (varies by model)
  • Stroke: 3” (76 mm), 6” (152 mm), 12” (304 mm), 18” (457 mm)
  • Working temp. range: -20°F to 120°F (-29°C to 50°C)
  • Tube restraining torque: 60 in-lbf
  • IP50 protection standard; IP52 protection available

Features & Benefits of HMPB Series Actuators

  • Heavy duty design for long working life in challenging applications
  • Acme screw design with bi-directional ball-type brakes
  • Aluminum housing & outer tube; zinc-chromate plated steel translating tube
  • Double clevis ends
  • Adjustable internal limit switch
  • Automatic reset for motor thermal overload protection
  • Optional potentiometer
  • Optional capacitor
  • Optional IP52 weather resistant sealant
  • Optional bellows boot
  • Optional Threaded ends 

Linear Actuator Selection Guide

To determine which AC-powered linear actuator is best for your application, consider the factors below. As needed, C.H. Bull is available to help you select the right model for your unique needs. Contact us to discuss your application requirements.

  • Capacity: The force required the move and hold the load (total weight of the load)
  • Voltage: The voltage needed to power the actuator
  • Travel: The distance/range of motion required (stroke)
  • Speed: The speed at which the load must be moved
  • Duty Cycle: Percentage of time an actuator is in motion relative to total time
  • Orientation: The direction in which the actuator’s force is applied
  • Environment: The working conditions in which the actuator will operate

Contact C.H. Bull for Duff Norton HMPB Series Linear Actuators 

Whatever your motion control needs, we have the right actuator for the job. Request a quote on HMPB series linear actuators for your application, or contact C.H. Bull for more information.

Request a Quote
close slider

Request a Quote - Heat Transfer Solutions

Contact Information





I am interested in...
(Check all that apply)
Drop files here or
Max. file size: 50 MB, Max. files: 5.