Product Quicklinks Call us at 800.873.8731
Dynapar_logo-Nov-11-2021-09-30-18-62-PM

NorthStar Heavy Duty Encoders

 

Maximize Uptime With NorthStar Heavy Duty Encoders

Next generation NorthStar magnetic encoders are easy to install and maintain, provide reliable output and come with on-board diagnostics so you can be confident they will perform in heavy duty environments.

 

NorthStar Heavy Duty Encoders Features

With over half a century of proven reliability, the next generation of NorthStar encoders continues to provide superior performance with higher resolution, noise resistant electronics, and on-board diagnostics so you can be confident in heavy duty environments.

hollow-shaft-heavy-duty-encoder-mounted

Best in Class Reliability and Performance

Be confident in encoder selection with an encoder designed specifically for mills and heavy duty environments.
  • NorthStar heavy duty magnetic encoders outperform optical encoders thanks to fully encapsulated electronics and provide the lowest cost of ownership in applications with dust, moisture, and contaminants common in heavy duty environments.
  • With over half a century of proven reliability, the next generation of NorthStar encoders continues to provide heavy duty performance with higher resolution, noise-resistant electronics, and on-board diagnostics.
  • High power differential line driver (IC-WE) with active ringing suppression provides a reliable output signal for long cable runs

northstar-sensor-module-installation

Easy Installation with a Way to Verify Proper Installation

Install quickly and have peace of mind of proper encoder installation thanks to a real-time LED indicator.
  • Widest sensing air gap on the market allows pulse wheel to be installed without special precision tools and avoid wheel to sensor strikes while in operation
  • Reverse polarity and short circuit protection forgive wiring mistakes such as crossing power and signal wires.
  • Diagnostic LED indicator verifies correct power to encoder and pulse output

northstar-diagnostic-led-indicator

Simplified Trouble-shooting with Visual LED Indicator

Get real-time indication of successful encoder output thanks to the diagnostic LED indicator.
  • Find the root cause faster with a multicolor status LED indicator that verifies correct power to encoder, pulse output and potential power or line driver issues
  • LED only flashes green once proper power is supplied and only blinks if the wheel is aligned correctly, helping with initial machine commissioning and field install
  • LED indicator provides a visual indication if a failure occurs

Hollow Shaft Encoders For AC Motors

NorthStar hollow shaft encoders are ideal for AC motor applications with no NEMA C-face mounting provisions or mounting through fan shrouds in heavy-duty markets such as pulp, paper, steel mills, and cranes. In addition to heavy duty optical encoders, NorthStar magnetic hollow shaft encoders offer fully encapsulated electrics for improved environmental protection. Magnetic encoders offer superior protection in applications with dust, moisture, and contaminants common in heavy duty environments. Other feature include:

  • Bore size options available up to 4 ½”
  • Resolutions available up to 5,000 PPR
  • Various tether options for easy installation
  • LED Indicator to confirm proper installation and verify encoder status

hollow-shaft-encoder-mounted

 

Heavy Duty Hollow Shaft Solutions:

HT55 Hollow-shaft heavy duty encoder
HT55
  • Hollow-shaft with tether and collar clamp
  • Magnetic sensing, encapsulated electronics
  • Bore sizes 1/2" - 2-7/8"
  • 256 - 4,096 PPR resolution
  • Reverse polarity and short circuit protection
Configure Datasheet
HT85 hollow shaft magnetic heavy duty encoder
HT85
  • Hollow-shaft, tether and collar clamp
  • Magnetic sensing, encapsulated electronics
  • Bore sizes 1" - 4-1/2"
  • 60 - 2,400 PPR resolution
  • Reverse polarity and short circuit protection
Configure Datasheet
HSD35 heavy duty optical encoder
HSD35
  • Hollow-shaft with tether and collar clamp
  • Optical sensing, up to IP67 protection
  • Bore sizes 1/4" - 1-1/4"
  • 1 - 5,000 PPR resolution
  • Isolated bore, reverse polarity, short circuit protection, latching connectors
Configure Datasheet

Bearingless Encoder Tachs For C-Face Mounting

NorthStar offers a variety of mill-duty, bearingless encoders with magnetic sensing for maximum reliability. Fully encapsulated electronics and cast iron housing options enable these NEMA C-Face solutions to withstand the harshness of heavy-duty mill applications. Bearingless encoders also offer field replaceable sensor wheels and replaceable sensor modules for RIM Tach models for improved longevity. Other features include:

  • Bore size options available up to 4 ½”
  • Mounting Options for 4.5”, 6.5”, 8.5” and 12.5” NEMA C-Faces
  • Large sensing air-gap for easy install and resistance to shaft end play
  • Field-replaceable sensor modules and wheels
  • LED Indicator to confirm proper installation and verify encoder status

northstar-rim-tach-dual-output-mounted

 

C-Face Bearingless Solutions

RT8 digital encoder tachometer
RIM Tach RT8
  • Direct Mount to NEMA 8.5” C-Face (180)
  • Magnetic sensing, encapsulated electronics
  • Wheel bore sizes: 5/8" - 2-7/8"
  • 60 - 2,400 PPR resolution
  • Cast iron housing, reverse polarity and short circuit protection
Configure Datasheet
1250WoWHRlg
RIM Tach RT1
  • Direct Mount to NEMA 12.5” C-Face
  • Magnetic sensing, encapsulated electronics
  • Wheel bore sizes 5/8" to 4-1/2"
  • 60 - 2,400 PPR resolution
  • Cast iron housing, reverse polarity and short circuit protection
Learn More Datasheet
ST56-digital-tachometer-170
SLIM Tach ST56
  • Direct Mount to NEMA 4.5” C-Face (56)
  • Magnetic sensing, encapsulated electronics
  • Wheel bore sizes: 5/8" - 2-7/8"
  • 60 - 2,048 PPR resolution
  • Slim housing, reverse polarity and short circuit protection
Configure Datasheet
ST67-for-web-170pix-1
SLIM Tach ST67
  • Direct Mount to NEMA 4.5” and 6.5” C-Face (56 and 140)
  • Magnetic sensing, encapsulated electronics
  • Wheel bore sizes 5/8" - 2-7/8"
  • Slim housing, reverse polarity and short circuit protection
Configure Datasheet
ST85-for-web
SLIM Tach ST85
  • Direct Mount to NEMA 8.5” C-Face (180)
  • Magnetic sensing, encapsulated electronics
  • Wheel bore sizes: 5/8" - 2-7/8"
  • Slim housing, reverse polarity and short circuit protection
Configure Datasheet
NorthStar-Slim-Tach-ST1250-170x170
SLIM Tach ST1250
  • Direct Mount to NEMA 12.5” C-Face
  • Magnetic sensing, encapsulated electronics
  • Wheel bore sizes: 5/8" - 4-1/2"
  • Slim housing, reverse polarity and short circuit protection
Configure Datasheet

Foot Mount Shafted Encoders and Resolvers

NorthStar foot mount encoder solutions are rugged and reliable thanks to dual large-sealed bearings for greater bearing load capacity. Foot mount solutions mount via flexible shaft couplings, which offer improved resistance to misalignment compared to hollow shaft encoders. The R56 foot mount solution is also offered with resolver sensing technology for improve temperature performance. Other features include:

  • 5/8”, single or dual shaft options
  • Foot mount or Direct Mount to NEMA Standard 4.5” C-Face (56)
  • Resolutions available up to 5,000 PPR
  • Optical, magnetic or resolver sensing technologies

northstar-rim-tach-installed-heavy-duty-motor

 

Foot Mount Solutions

RIM-6200lg
RIM Tach RT6
  • Foot mount or Direct Mount to NEMA 4.5” C-Face (56)
  • Magnetic sensing, encapsulated electronics 
  • 5/8" shaft
  • 60 - 2,400 PPR resolution
  • Cast iron housing, rugged bearings, reverse polarity and short circuit protection
Configure Datasheet
H56-shaft-encoder
H56
  • Foot mount or Direct Mount to NEMA 4.5” C-Face (56)
  • Optical sensing, up to IP66 protection
  • 5/8" shaft, single or double
  • 1 - 5,000 PPR resolution
  • Rugged bearings, reverse polarity and short circuit protection
Configure Datasheet
R56-housed-resolver
R56
  • Foot mount or Direct Mount to NEMA 4.5” C-Face (56)
  • Resolver, up to IP65 protection
  • 5/8" shaft, single or dual
  • Analog output, single or dual speed
  • Rugged bearings, higher operating temperature range 
Configure Datasheet
solution-cta

Expert Assistance When You Need It

Rely on our team to provide timely solutions to your inquiries regarding product selection and improving system reliability. Fill out the form and our team will contact you and provide assistance and technical expertise. 

Our experts can help:

  • Specify a solution for your heavy duty environment that will survive. 
  • Find a drop-in replacement to your current encoder solution.
  • Provide potential solutions to mounting or installation challenges. 

How Can We Help You?

 

 

© Copyright Dynapar 2025 All Rights Reserved

Privacy Policy | Cookie Policy | Site Map | Terms and Conditions