The Bently Nevada 31000-00-00-00-000-00-00, also cataloged as the 31000 Proximity Probe Housing, operates as a dedicated hardware component for the mechanical mounting and environmental protection of eddy-current proximity probes within industrial machinery casings.

Assembly Matrix

The 31000 series housing provides a rigid, adjustable platform for probe positioning. This specific configuration (31000-00-00-00-000-00-00) represents the base mounting assembly without integrated proximity sensors or specialized conduit adapters. The housing is engineered to support precise axial adjustment, allowing the operator to set the exact gap distance between the probe tip and the target surface while maintaining a seal against lubricants and environmental contaminants.

Hardware Specifications

Mechanical Mounting & Probe Alignment

Proper installation of the housing is critical for accurate rotor dynamics monitoring. The housing must be secured to the machine case to prevent self-induced vibration, which could register as false data on the monitoring system. The assembly utilizes a locking mechanism to secure the probe once the -10 VDC gap voltage is achieved. Cross-talk suppression depends on maintaining sufficient physical distance between housings when multiple probes are mounted in a single axial plane; utilize the included hardware to ensure that housings are not mounted in a configuration that causes electromagnetic field overlapping.

Shipment Contents

• 1x 31000-00-00-00-000-00-00 Housing Assembly

• 1x Lock nut and O-ring seal set

• 1x Installation technical guide

Installation Guidelines

• Surface Preparation: Clean the machine mounting boss and ensure the hole is tapped perpendicularly to the shaft centerline to prevent angular misalignment.

• Sealing: Apply approved thread sealant to the NPT threads to prevent oil leakage from the machine casing.

• Torque Management: Tighten the housing into the machine boss using appropriate wrenching points; do not apply torque to the probe lock nut during this phase.

• Adjustment: After installation, verify the probe tip position relative to the shaft and secure the housing locking nut to prevent drift during machine operation.

Frequently Asked Questions

• Is this housing compatible with non-Bently probes? The housing is designed for standard probe diameters; however, fitment with third-party sensors is not guaranteed.

• What is the purpose of the O-ring? The O-ring provides a seal between the housing and the machine case to prevent pressurized lubricant leakage.

• Can the housing be used in high-vibration areas? Yes, the assembly is designed for rugged industrial environments, but ensure the mounting boss is not subject to structural fatigue.

• How do I prevent thread seizing? Use a compatible anti-seize compound on the threads if the housing is expected to be removed frequently.

• Does this include the probe? No, the 31000 is a mechanical mounting housing only; proximity probes must be ordered separately.

• What is the maximum pressure rating? The housing is rated for standard atmospheric or low-pressure machine casing environments; confirm specifications for high-pressure installations.

• Can this be modified for different thread types? Custom modifications to the housing threads can compromise structural integrity and seal efficacy.

• Why is the material important? The material choice ensures compatibility with the machine housing and resistance to environmental corrosion in oil-wetted applications.