330171-20-55-05-02-CN Bently Nevada 5mm Probe | 1/4-28 Thread Vibration Sensor

Bently Nevada 330171 3300 5mm Probe

• Manufacturer: Bently Nevada (Made in U.S.A.)
  • Product series: 330171
    • Full model number: 330171-20-55-05-02-CN
      • Product type: 3300 5mm Proximity Probe, 1/4-28 UNF thread, without armor
        • Unthreaded length option (20): 2.0 in
        • Overall case length option (55): 5.5 in
        • Total length option (05): 0.5 meter (1.6 feet)
        • Connector option (02): Miniature coaxial ClickLoc connector, standard cable
        • Agency approval option (CN): Country specific (China)

Technical specifications – tree view

• Electrical:
  • Power requirement: -17.5Vdc to -26Vdc, max 12mA consumption
  • Sensitivity: <2mV change per volt input change
  • Output resistance: 50Ω
  • Probe DC resistance (0.5m): 7.45Ω ±0.50 (center to outer conductor)
• Mechanical:
  • Probe tip material: Polyphenylene sulfide (PPS)
  • Probe case material: AISI 304 stainless steel
  • Thread: 1/4-28 UNF, max engagement 0.375 in
  • Probe cable: 75Ω triaxial, FEP insulated, 0.5m length
  • Tensile strength: 222N (50lbf) case to lead, lead to connector
  • Connector material: Gold-plated brass or beryllium copper
• Torque specifications:
  • Probe case torque: 5.1 N·m (45in·lb) recommended, 7.3 N·m (65in·lb) max
  • Connector to connector torque: 0.565 N·m (0.42ft·lb) max
• Environmental:
  • Probe temperature range: -35°C to +177°C (-31°F to +351°F)
  • Minimum cable bend radius: 25.4mm (1.0in)
• Weight: 0.323 kg

Expert review – manager’s insight

• Why choose 330171-20-55-05-02-CN? This 5mm probe is built for precision vibration monitoring. The 1/4-28 UNF thread is standard for tight spaces. PPS tip offers excellent durability. The ClickLoc connector ensures secure, tool-free installation.
• Application fit: Ideal for small to medium rotating machinery like pumps, fans, and gearboxes. The -35°C to +177°C range covers most industrial environments. Country-specific approval (CN) ensures compliance with local regulations.
• Installation tip: Use a #3 or larger tap drill for mounting. Never exceed 7.3 N·m case torque to avoid thread damage. Keep cable bend radius above 25.4mm.

Compatible devices & applications

• Suitable for:
  • Bently Nevada 3300 series monitors and extension cables
  • Radial vibration and axial position monitoring on pumps, motors, compressors
  • Applications requiring 5mm probe with 1/4-28 mounting thread
  • Non-armored installations in clean, dry environments

Comparison & selection guide

• 330171 series variations:
  • 330171-20-55-05-02-CN (this model): 2.0in unthreaded length, 5.5in case, 0.5m cable, ClickLoc connector, CN approval. Best for standard Chinese market installations needing medium reach.
  • 330171-00-10-05-02-05: Different unthreaded/case lengths. Consider if you need shorter or longer reach for your machine.
  • 330171-00-08-05-02-CN: Similar CN approval but different length options. Compare dimensions before ordering.
• Selection advice: Measure your mounting depth carefully. The 20-55 combination fits most standard bearing housings. For confined spaces, consider shorter unthreaded length options.

Package contents & delivery

• Included: 1x Bently Nevada 330171 probe with ClickLoc connector
• Documentation: Installation guide and specification sheet
• Warranty: 12 months against manufacturing defects
• Shipping: 12-24 hour dispatch. Carriers: FedEx, UPS, DHL (tracked and insured)

FAQ – expert selection guidance

• What does the “CN” approval mean for this probe?
• CN indicates country-specific approval for China. It ensures compliance with local certification requirements for industrial equipment.
• Can I use this probe with armored extension cable?
• This model is without armor (standard cable). For armored systems you need a different connector option. Check your extension cable type before ordering.
• What is the difference between 5mm and 8mm probes?
• 5mm probes (like this) are for tight mounting spaces. 8mm probes offer longer linear range and are standard for larger machines. Choose based on your target size and clearance.
• How do I select the correct unthreaded length?
• Measure from mounting surface to target at minimum gap. Add clearance for adjustment. 2.0in (option 20) works for most applications. For deeper holes consider option 40 or 80.
• What power supply works with this probe?
• Requires -17.5Vdc to -26Vdc. Most Bently Nevada monitors provide -24Vdc. Operating above -23.5Vdc reduces linear range, so verify your system voltage.
• Is the probe tip replaceable?
• No, the tip is factory-bonded to the case. If damaged, replace the entire probe.
• What torque should I use for the ClickLoc connector?
• Maximum 0.565 N·m (0.42 ft·lb). Hand-tight plus 1/8 turn is usually sufficient. Over-tightening damages the connector.
• Can this probe withstand washdown environments?
• It is not armored and has no IP rating. For wet or harsh environments consider armored versions with proper sealing.

Contact & ordering information

• Sales inquiries: sales@powergearx.com
• WhatsApp support: +86 18030005825
• Website: www.powergearx.com

Copyright © 2025 Powergear X Automation Limited. All rights reserved.
Original Source: https://www.powergearx.com/