Secure Probe Mounting for Vibration Monitoring
When installing proximity probes in industrial machinery, a reliable mounting bracket ensures accurate and consistent readings. The Bently Nevada 137491-01 Aluminum Clamp Mounting addresses the common challenge of probe slippage or misalignment in high-vibration environments. Designed specifically for 3/8-inch diameter smooth body probes, this clamp provides a stable and repeatable mounting solution that maintains probe position over extended operating periods.
Designed for Smooth Body Probes
The 137491-01 is a dedicated bracket for 3/8-inch diameter smooth body probes. Its aluminum construction offers a balance of strength and corrosion resistance, making it suitable for harsh industrial settings. The clamp secures the probe firmly without damaging the smooth body surface, reducing the risk of measurement drift due to probe movement.
Mounting Screw Thread Options
This bracket accommodates two mounting screw thread sizes to fit different installation requirements:
- 10-24 UNC-2A – Standard UNC thread for North American applications.
- M5 x 0.8-6g – Metric thread for international installations.
The suffix in the part number 137491-AXX indicates the thread choice: "01" corresponds to 10-24 UNC-2A mounting screws. Verify your mounting surface thread before ordering to ensure a proper fit.
Application in Rotating Machinery
In applications such as turbines, compressors, and pumps, the 137491-01 clamp holds proximity probes that monitor shaft vibration and position. By providing a rigid and repeatable mounting point, it helps maintain the precise gap between probe tip and shaft surface required for accurate displacement measurements. This reduces false alarms and unplanned downtime caused by probe movement.
Installation Guidance
To install the 137491-01, first clean the mounting surface to remove debris. Align the clamp with the pre-tapped holes on the machine housing. Insert the appropriate mounting screws (10-24 UNC-2A or M5 x 0.8-6g) and tighten to the manufacturer's recommended torque. Insert the 3/8-inch smooth body probe through the clamp and secure it using the clamp's integral locking mechanism. Verify the probe gap using a feeler gauge or calibration tool before final tightening.
Maintenance and Reliability
Periodically inspect the clamp for signs of corrosion or thread wear, especially in environments with high humidity or chemical exposure. Retighten mounting screws if vibration loosens them over time. The aluminum material resists rust, but regular visual checks ensure long-term reliability. No special cleaning solvents are required; a dry cloth or mild detergent is sufficient.
Compatibility and Integration
The 137491-01 is designed exclusively for Bently Nevada 3/8-inch diameter smooth body proximity probes. It integrates with Bently Nevada monitoring systems such as the 3500 Series and 3300 Series. Ensure your probe model matches the 3/8-inch smooth body specification before purchasing. The clamp does not include probes or mounting screws; order these separately based on your thread size requirement.
Selection Advice
Before ordering the 137491-01, confirm your probe diameter (3/8-inch smooth body) and the mounting screw thread size required by your machine. If your existing mounting holes use 10-24 UNC-2A, select the "01" suffix. For M5 x 0.8-6g holes, choose the corresponding suffix. SpareTechPLC stocks this bracket and can help verify compatibility with your system. Contact our team for current availability and lead times.
