Rotary encoders with ultra-reliable magnetic and optical sensing technology for heavy-duty applications. For the toughest environments, call on NorthStar heavy-duty encoders. NorthStar manufactures innovative and reliable products for measuring speed and position in extreme manufacturing environments.
These heavy-duty, mill-duty magneto-resistive incremental encoders; compact and wash down resistant, harsh-duty optical incremental encoders; and pulse tachometers are designed to provide rugged, high-performance signals in the harshest situations.
When you need high-performance in less than optimal conditions, count on the long-recognized reliability of NorthStar.
NorthStar Range by Model:
Wind 56: Heavy Duty Bearing-less Encoder
Special Feature: Designed specifically for wind turbine pitch control units with key-way.
- Pulses/Revolution: 1024
- Environment: -40 to 140C
- Shaft/Bore Size: 1-1/8”
SLIM Tach® SL85 Encoder
Special Feature: Bearingless Design
- Pulses/Revolution: 64 to 2048
- Environment: -40 to +90C (+120C) Opt
- Shaft/Bore Size: 5/8″ to 2-7/8″ Std, Up to 3.75 inch available
SLIM Tach® SL56 Bearingless Encoder
Special Feature: Bearingless Design
- Pulses/Revolution: 64 to 2048
- Environment: -40 to +90C (+120C) Opt
- Shaft/Bore Size: 5/8″ to 2-7/8″ Std, Up to 3.75 inch available
SLIM Tach® SL1250 Encoder
Special Feature: Bearingless Design
- Pulses/Revolution: 64 to 2048
- Environment: -40 to +90C (+120C) Opt
- Shaft/Bore Size: 5/8″ to 2-7/8″ Std, Up to 3.75 inch available
SLIM Tach® RL67 Encoder
Special Feature: Designed for Reliance Motors (6.75″ fit and 56 and 140 C Face)
- Pulses/Revolution: 64 to 2048
- Environment: -40 to +90C (+120C) Opt
- Shaft/Bore Size: 5/8″ to 2-7/8″ Std, Up to 3.75 inch available
SLIM Tach® HS60 Hollowshaft Encoder
Special Feature: Large Bore Hollow-shaft Design
- Pulses/Revolution: 64 to 2048
- Environment: -20 to +80C
- Shaft/Bore Size: 1-1/8″ to 2-7/8″
SLIM Tach® HS56 Hollow Shaft Encoder
Special Feature: Hollowshaft Design for TEFC AC Motor Mounting
- Pulses/Revolution: 64 to 2048
- Environment: -20 to +80C
- Shaft/Bore Size: 5/8″ to 1-1/8″
Series HSD44 Extreme Heavy Duty Encoder
Special Feature: Isolated Coupling Compensates for motor shaft endplay
- Pulses/Revolution: 1024 or 2048
- Environment: -40 to 100C
- Shaft/Bore Size: 5/8″ / 16mm isolated hub-shaft
Series HSD38 Harsh Duty Optical Encoder
Special Feature: Rugged Bearing Structure
- Pulses/Revolution: 15 to 5000
- Environment: -40 to 100C
- Shaft/Bore Size: 6mm to 1-1/4″ Hollow-shaft
Series HSD37 Harsh Duty Optical Encoder
Special Feature: ATEX Certification Available
- Pulses/Revolution: 15 to 5000
- Environment: (-40 to 80C) ATEX, -40 to 100C
- Shaft/Bore Size: 12mm to 1″ Hollow-shaft
Series HSD35 Heavy Duty Optical Encoder
Special Feature: Field Serviceable Connector
- Pulses/Revolution: 1 to 5000
- Environment: -40 to 100C
- Shaft/Bore Size: 6mm to 1-1/4″ Hollow-shaft
Series HSD25 Harsh Duty Optical Encoder
Special Feature: Compact Hubshaft Design
- Pulses/Revolution: 1 to 3600
- Environment: (-40 to 80C) ATEX, -40 to 100C
- Shaft/Bore Size: 3/8″ to 3/4″ Bore
Series HS85 Hollow Shaft Encoder
Special Feature: Hollow-shaft Design with Removable Sensors
- Pulses/Revolution: 60 to 2048
- Environment: -20 to +70C
- Shaft/Bore Size: 5/8″ to 2-7/8″ Std Up to 4.5″ available
Series HDP30 Shaft-Less Encoder
Special Feature: Shaft-less, no shaft, bearings or seals to wear out
- Pulses/Revolution: 256
- Environment: -25 to +80C
- 30mm Dia.
Series HDP18 Shaft-Less Encoder
Special Feature: Shaft-less, no shaft, bearings or seals to wear out
- Pulses/Revolution: 8 to 512
- Environment: -25 to +80C
- 18mm Dia.
Series HDN58 Shaft-Less Encoder
Special Feature: Shaft-less, no shaft, bearings or seals to wear out
- Pulses/Revolution: 8 to 512
- Environment: -25 to +70C
- 58mm Dia, Plug Connect
Series HD25 Harsh Duty Optical Encoder
Special Feature: Dual Isolated Outputs Available
- Pulses/Revolution: 1 to 5000
- Environment: (-40 to +80C) ATEX, -40 to +100C
- Shaft/Bore Size: 3/8″ or 10mm
Series HD20 Harsh Duty Optical Encoder
Special Feature: ATEX Certification Available
- Pulses/Revolution: 1 to 3600
- Environment: (-40 to +80C) ATEX, -40 to +100C
- Shaft/Bore Size: 3/8″ or 10mm
Series HD2.5 Heavy Duty Optical Encoder
Special Feature: ATEX Certification Available
- Pulses/Revolution: 1 to 5000
- Environment: -40 to +100C
- Shaft/Bore Size: 1/4″, 3/8″, 10mm
Series EN44 Extreme Heavy Duty Encoder
Special Feature: Barrier-less ATEX Zone 1 Certification
- Pulses/Revolution: 1024 or 2048
- Environment: -50 to +100C
- Shaft/Bore Size: “5/8″” / 16mm integral coupling”
Series EN42 Zone 1 Heavy Duty Encoder
Special Feature: Barrier-less ATEX Zone 1 Certification
- Pulses/Revolution: 15 to 5000
- Environment: -50 to +100C
- Shaft/Bore Size: “5/8″” to 1″”, 15mm, 16mm”
Series DWD38 Harsh Duty Optical Encoder
Special Feature: Draw Works Threaded Shaft
- Pulses/Revolution: 15 to 5000
- Environment: (-40 to +80C) ATEX, -40 to +100C
- Shaft/Bore Size: 1″-14UNS x, 5/8″-18 Threaded Shaft or 1″-14UNS Threaded Shaft
Rim Tach® 8500 NexGen
Special Feature: Largest non contact sensing Gap (70 thousandths) available on the market
- Pulses/Revolution: Up to 2048 PPR (4096 Coming Soon)
- Environment: -40 to +100°C
- Shaft/Bore Size: 5/8″ – 2-7/8″ Std
RIM Tach® 8500 Encoder
Special Feature: Bearingless Design with Removable Sensors
- Pulses/Revolution: 60 to 1200
- Environment: -40 to +80°C
- Shaft/Bore Size: 5/8″ to 2-7/8″ Std, Up to 3.75 inch Available
RIM Tach® 6200 Severe Duty Encoder
Special Feature: Shafted Foot Mount or Face Mount
- Pulses/Revolution: 60 to 2048
- Environment: -40 to +70°C
- Shaft/Bore Size: 5/8″
RIM Tach® 1250 Encoder
Special Feature: Bearingless Design with Removable Sensors
- Pulses/Revolution: 60 to 2048
- Environment: -40 to +80°C
- Shaft/Bore Size: 5/8″ to 2-7/8″ Std, Up to 3.75 inch Available
- Accepts A, B, and Z inputs from two separate encoders
- Eliminates the need for two input devices
- Status indicators for normal operation and encoder selection
- Thermal, under voltage, reverse polarity, and overload protection
- Input voltage range from 4 to 26 VDC
- Provides redundancy and backup
- Eliminates the need for two encoders
- Routes signals to multiple locations, repeats and amplifies
- Provides two independent, isolated 5-26 VDC line driver outputs
- Compatible with virtually all incremental encoders
- Performs up to 18 tests of signal output quality; simple one keystroke access to tests
- Interfaces with most major brands of digital tachometers and encoders
- Fast encoder checkout with numeric value display
