Bently Nevada 4190-34 Adapter | 304SS Junction Box Mount

Product Overview

• Bently Nevada 4190-34 adapter connects a junction box to the machine case.
• It also enables proximity probe mounting in specific setups.
• This adapter offers a range of threads and configurations.
• Crafted from 304 Stainless Steel for durability.

Technical Specifications

• Brand: Bently Nevada
• Model: 4190-34
• Internal Diameter: 7.14 mm (0.281 in)
• Internal Thread: 1/4-28 UNF-2B
• External Thread: 3/4-14 NPT
• Overall Length: 56.1 mm (2.21 in)
• Material: 304 Stainless Steel
• Measurement Range: compatible with standard proximity probes
• Frequency Response: depends on probe used
• Sensitivity: defined by probe specifications
• Linearity: maintained within probe limits
• Resolution: system dependent
• Temperature Range: -30°C to +100°C
• Environmental Tolerance: resistant to moisture and mild chemicals
• Interference Rejection: built for industrial EMC environments

Installation Guide

• Clean both the adapter and machine threads before assembly.
• Hand-tighten the 1/4-28 UNF-2B internal thread first.
• Then torque the 3/4-14 NPT external thread per standard practice.
• Use a suitable sealant on NPT threads for leak-proof fit.
• Mount the probe carefully to avoid damaging the sensing face.

Maintenance & Serviceability

• Inspect threads regularly for wear or contamination.
• Clean with a soft, lint-free cloth and isopropyl alcohol.
• No special tools required for routine checks.
• Replacement is quick, minimizing machine downtime.

Compatibility

• Works with all Bently Nevada proximity probes and junction boxes.
• Fits machines with 3/4-14 NPT ports and 1/4-28 UNF probe mounts.
• Also compatible with many third-party probes using the same threads.

Certifications

• Manufactured under ISO 9001 quality standards.
• Material certificate available upon request.
• RoHS compliant.

Package Contents

• 1 × 4190-34 Adapter
• Installation instruction sheet
• Warranty registration card

Warranty & Shipping

• 12-month warranty against manufacturing defects.
• 24-hour dispatch for orders placed before 2 PM.
• Shipping via FedEx, UPS, or DHL – you choose.

Expert Review

• Manager’s Insight: This adapter simplifies field mounting. Its 304 stainless build resists corrosion. Threads are precise, reducing installation errors. Ideal for retrofitting older machines with new probes.
• Field Engineer Note: We used it on a turbine bearing housing. The fit was exact, and the NPT seal held perfectly. Saves hours compared to custom adapters.

Applications

• Ideal for: Steam turbines, compressors, pumps, and generators.
• Used in vibration monitoring and shaft position systems.
• Common in oil & gas, power generation, and heavy industry.

Frequently Asked Questions

• Can I use this with a 5 mm probe?
• Yes, the internal thread accepts 1/4-28 UNF probes, including 5 mm types.
• Does it fit a standard junction box?
• Yes, the 3/4-14 NPT external thread connects to most junction boxes.
• Is the material suitable for offshore use?
• 304 SS offers good saltwater resistance, but we recommend 316 for extreme marine environments.
• What if I need a different thread?
• Contact us – other configurations may be available.
• How do I torque the NPT connection?
• Apply 50–60 ft-lbs, using a compatible sealant.

Selection Guide

• Step 1: Verify your machine port is 3/4-14 NPT.
• Step 2: Confirm probe thread is 1/4-28 UNF.
• Step 3: Measure available length – 56.1 mm is standard.
• Step 4: For high-vibration areas, choose the 4190-34 for its robust stainless body.
• Tip: Order spare adapters to keep on hand for quick maintenance.

Contact us:
sales@powergearx.com
|
+86 18030005825

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