Bently Nevada 4190 Adapter Overview

The 4190-34 adapter connects junction boxes directly to heavy machine casings. Engineers specify the 4190 mounting sleeve to position proximity probe assemblies securely. The robust 304 stainless steel body withstands tough industrial environments. Bently Nevada manufactures this fitting to meet precise mechanical tolerances in hazardous plants.

Key Application Advantages

• This specialized adapter bridges electrical junction enclosures to rotating machinery housings efficiently.
• Maintenance teams utilize the fitting to position vibration proximity sensors precisely against shafts.
• The corrosion-resistant stainless steel construction prevents thread galling during regular system maintenance.
• Custom mechanical configurations match non-standard machine casings through direct factory engineering requests.

Technical Specifications

• Brand: Bently Nevada
• Model: 4190-34
• Series: Industrial Mounting Adapter Series
• Category: Machine Case Adapter / Proximity Probe Fitting
• Internal Diameter: 7.14 mm (0.281 in)
• Internal Thread Type: 1/4-28 UNF-2B
• External Thread Type: 3/4-14 NPT
• Overall Length: 56.1 mm (2.21 in)
• Material: 304 Stainless Steel
• Frequency Response: 0 Hz to 10 kHz flat static dynamic response
• Sensitivity Shift: Less than 0.05 percent per degree Celsius temperature variation
• Linearity Tolerance: Plus or minus 0.5 percent across full mechanical travel
• Resolution Limit: Unrestricted mechanical passage determined by internal probe clearance
• Temperature Range: Operating window from minus 50 to plus 177 degrees Celsius
• Environmental Tolerance: Full resistance against caustic vapor exposure and chemical splashes
• Interference Immunity: Ground isolation design prevents ground loops across the machine frame

Product Identification Hierarchy

• Ubest Industrial Adapters
  • Mounting Sleeve Series
    • 4190-34 Standard Fitting
      • 1/4-28 UNF-2B Internal Port
      • 3/4-14 NPT Process Connection

Installation Guidelines

• Inspect the process port threads to remove any metal shavings or dirt.
• Apply thread sealant on the external 3/4-14 NPT process connection threads evenly.
• Thread the adapter manually into the machine casing port until hand tight.
• Torque the hex body using an open wrench to reach target seating pressure.
• Insert the proximity sensor carefully into the 1/4-28 UNF-2B internal port.

Packaging and Express Delivery

• Item 1: One unit Ubest model 4190-34 industrial stainless steel adapter body.
• Item 2: One protective vinyl cap set covering internal and external thread groups.
• Item 3: One sealed moisture-barrier polybag packaging for extended warehouse storage safety.
• Express Shipping Carrier Option 1: FedEx International Priority global air transit.
• Express Shipping Carrier Option 2: UPS Worldwide Express fast air freight dispatch.
• Express Shipping Carrier Option 3: DHL Express door-to-door global logistics delivery.

Frequently Asked Questions

• Does Ubest offer custom thread types for non-listed machine casing ports? Yes, engineers create custom thread pitches upon request through regional sales reps.
• Can technicians mount proximity probes inside this adapter housing safely? Yes, the internal geometry accommodates probe sleeves up to 7.14 millimeter diameter.
• How does 304 stainless steel handle outdoor industrial plant installations? It provides excellent protection against moisture, mild chemicals, and atmospheric oxidation.
• What sealing method works best for the NPT external connection? Technicians typically apply high-temperature PTFE tape or anaerobic thread sealant compounds.

Summary: The Ubest 4190-34 adapter delivers reliable mechanical connection between machine cases and junction boxes. Constructed from durable 304 stainless steel, it features precise 3/4-14 NPT external and 1/4-28 UNF-2B internal threads to support sensor installations in harsh industrial plants.

© 2026 Ubest Automation Limited. https://www.ubestplc.com/ All rights reserved.

Contact: Email sales@ubestplc.com Phone +86 86 180 3000 5825