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The Macro Sensors BBP and BBT family of pencil-type gaging probes utilize a linear ball bearing assembly precisely fitted to a hardened-and-ground, non-rotating probe shaft to minimize radial play and the effects of side loading. This results in the probes' exceptional repeatability of 0.000006 inch (0.15 μm). One end of the probe shaft is coupled to the core of a friction-free LVDT sensor, which produces an output voltage that is linearly proportional to the probe shaft position. The use of an LVDT for probe shaft displacement sensing eliminates any additional transducer errors due to friction, stiction, or mechanical hysteresis. 


  •  Ultra-precision linear ball bearing assembly gives 0.000006 inch (0.15 μm) repeatability 
  • Industry-standard .375" (9.5 mm) and .315” (8.0 mm) diameters 
  • Industry-standard sizes and ranges 
  • Exceptionally long life; 200 million cycles 
  • Low pressure air-extend/spring-retract versions available (BBP 375-A and BBT 375-A) 


Please review product documents or contact us for the latest agency approval information.  

Electrical Characteristics

  • Supply Voltage (V) 3

  • Electrical Connections  Leads

Signal Characteristics

  • Excitation Frequency (kHz) 2.5

Body Features

  • Spring Loaded  Spring Loaded

Housing Features

  • Housing Material  Stainless Steel

  • Housing Diameter (in) .315, .375

Usage Conditions

  • Operating Temperature Range  -10 – 80 °C [ 14 – 176 °F ]

Industry Standards

  • IP Rating  IP65


  • Full Stroke Ranges (mm) ±.508, ±1.02, ±2.54, ±5.08

  • Full Stroke Ranges (in) ±.02, ±.04, ±.1, ±.2

  • Linearity (% of Span) ±.5

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Terms and Conditions

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This information has been provided to your free of charge for your use but remains the sole property of TE Connectivity Corporation (''TE'') or SnapEDA,  Inc. or Ultra Librarian/EMA Design Automation, Inc. (collectively, "Company"). While Company has used reasonable efforts to ensure its accuracy, Company does not guarantee that it is error-free, not makes any other representation, warranty, or guarantee that the information is completely accurate or up-to-date. In many cases, the CAD data has been simplified to remove proprietary detail while maintaining critical interface geometric detail for use by customers. Company expressly disclaims all implied warranties regarding this information, including but not limited to any implied warranties or merchantability or fitness for a particular purpose.