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Allen-Bradley Hardware Product

Hydraulic Cylinder Position Sensors

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Our Bulletin 871D Cylinder Position Sensors are ideal for end-of-stroke detection on hydraulic and pneumatic cylinders. Each sensor mounts into the standard in-port cylinder position sensor bolt pattern.

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871D Hydraulic Positioning
  • Overview
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Overview

  • Rugged zinc housing and aluminum probe
  • Withstands pressures up to 3000 psi
  • Six industry standard probe lengths from 26...115.9 mm (1.025...4.560 in.)
  • All units supplied with O-ring, two ¼”-20 x ¾” screws, and mounting bracket allowing for 360° sensor rotation
  • Shielded construction
  • Weld field immune
  • 4-wire DC and 2-wire AC/DC versions with either mini- or micro-style connectors
  • DC units feature PNP/NPN outputs
  • Short circuit, overload, transient noise, false pulse, and reverse polarity protection
  • Applications include:
    • Material handling
    • Packaging
    • Food processing
    • Transportation
    • End-of-stroke sensing of pneumatic and hydraulic cylinders

Product Configuration

871D - M
 
W
 
2
 
NP  
 
260   - D4
    Voltage Special Features Sensing Range [mm (in.)] Output   Probe Length  [mm (in.)]   Connection Type
Code Description Code Description Code Description Code Description Code Description   Code Description
M DC W Weld-field immune 2 2  (0.08) NP N.O. NPN/PNP 260 26 (1.02)   D4 DC 4-pin Micro QD
L AC/DC     N N.O. 317 31.7 (1.25)   N3 AC 3-pin Mini QD
    524 52.4 (2.06)   R3 AC 3-pin Micro QD
730 73 (2.87)    
1159 115.9 (4.56)  

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Documentation

Resource Publication Number Language
Presence Sensing Brochure SENSOR-BR001
 
Looking for Technical Documentation?

Visit the Technical Documentation Center to find product specifications, installation guides, user manuals, product certifications and more.

View 871 Cylinder Inductive Proximity Sensors Technical Publications and Certifications

Certifications

UL Listed Component Mark Canadian and United States RequirementsUL Listed Component Mark Canadian and United States Requirements
UL Listed CertificationUL Listed Certification
UK Conformity Assessed UK Conformity Assessed
  • CE Marked for all applicable directives
  • cULus Listed
  • UL Listed
  • UKCA Marked for all applicable regulations
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