Bently Nevada · 7200 Series 5 mm / 8 mm215088 mm Reverse-Mount Proximity Probe

Legacy ordering table resolved

Bently Nevada 21508-02-12-05-02 8 mm Reverse-Mount Proximity Probe

Name: Bently Nevada 21508-02-12-05-02 8 mm Reverse-Mount Proximity Probe
Brand: Bently Nevada
SKU: 2931697
Price: 1 USD
Availability: InStock

The documented 7200-series 8 mm reverse-mount probe with fixed 02-12 geometry, a 0.5 m integral lead and miniature male coaxial connector.

Model Information

Bently Nevada 21508-02-12-05-02 is the documented reverse-mount 8 mm probe in the legacy 7200 proximity transducer family. Reverse mounting allows the probe to be inserted from inside a bearing housing or bracket while its cable exits toward the accessible side, a useful arrangement when the external case geometry cannot accept a standard threaded approach.

The manufacturer ordering table fixes the reverse-mount body as 21508-02-12: 21508 identifies an unarmored 8 mm probe with 3/8-24 threads, and 02-12 is the specified reverse-mount geometry. Suffix 05 selects a 0.5 m total cable length with the published tolerance, while suffix 02 selects the miniature male coaxial connector. This is why the supplied 21508-01-12-05-02 text has been normalized to the manual-supported ordering number.

The probe belongs to a complete 7200 electrical system, not a generic interchangeable cable. When sustaining an installed loop, verify the Proximitor sensor, extension-cable length, connector condition and target material before replacement so the calibrated system length and the existing mechanical gap remain valid.

Bently Nevada 7200 ordering table for 21508-02-12 reverse-mount proximity probe

Technical Specifications

Brand	Bently Nevada
Model	21508-02-12-05-02
Product name	7200 Series 8 mm Reverse-Mount Proximity Probe
Country	United States
Probe series	7200 Series 5 mm / 8 mm
Probe diameter	8 mm
Mounting style	Reverse mount
Thread	3/8-24
Lead armor	None
Fixed body code	21508-02-12
Total cable length	0.5 m / 20 in
Cable-length tolerance	+0.13 m / -0.05 m
Connector	Miniature male coaxial
Connector option	02
Cable-length option	05
System role	Probe in a matched 7200 transducer loop

Legacy System Compatibility

A correct Bently Nevada 21508-02-12-05-02 replacement preserves both the reverse-mount mechanics and the calibrated 7200 electrical chain.

Mechanical identity

Keep the fixed 02-12 reverse-mount body

The reverse-mount line is not configured with the variable standard-probe case fields. Confirm 21508-02-12 on the record, compare the 3/8-24 mounting point and verify that the internal insertion direction matches the existing bracket.

Electrical length

Count the 0.5 m probe lead in the system

The probe lead and any 21747 extension cable contribute to the total system length expected by the 7200 Proximitor. Reusing an extension without checking its marked length can shift scale factor or bias even when the connector fits.

Connector interface

Match the miniature coaxial termination

Suffix 02 supplies the miniature male coaxial connector. Inspect the mating extension lead for the same interface, clean dielectric surfaces and secure engagement instead of adapting the loop with undocumented hardware.

Maintenance Planning

Service work on Bently Nevada 21508-02-12-05-02 should preserve the installed gap and make the older cable path easier to inspect.

Capture bias and waveform before shutdown

Store the stationary gap voltage, channel trend, extension-cable number and Proximitor identity before disturbing the loop. These values give the commissioning team a real comparison after the replacement is installed.

Protect the internal target and connector

Secure the machine, mark probe depth and support the unarmored lead before loosening the reverse-mount hardware. Cap the open coaxial connection and prevent debris from entering the housing or landing on the target surface.

Commission from probe to monitor

After mounting, set the gap from the live system output, confirm stable bias, check connector restraint and compare the waveform with the recorded baseline. Investigate system-length or target differences before adjusting monitor scaling.

Common Product Questions

Why is Bently Nevada 21508-02-12-05-02 used instead of 21508-01-12-05-02?

The 7200 ordering table defines Bently Nevada 21508-02-12-05-02 with fixed reverse-mount geometry 02-12. It does not list 01-12 for the 21508 reverse-mount line, so the manual-supported full code is retained for ordering and page identification.

Why can Bently Nevada 21508-02-12-05-02 give the wrong gap after a like-for-like replacement?

Bently Nevada 21508-02-12-05-02 still requires the original insertion depth to be reset, and the complete 7200 electrical length must match. Check bracket position, extension-cable length, connector condition, target material and Proximitor identity before changing channel scaling.

Can Bently Nevada 21508-02-12-05-02 be connected directly to a newer 3300 XL Proximitor?

Do not assume direct compatibility for Bently Nevada 21508-02-12-05-02 merely because the connector looks similar. It is a 7200-series probe and should remain in the documented matched 7200 transducer loop unless an engineered migration specifies every component.

What should be inspected when Bently Nevada 21508-02-12-05-02 shows intermittent spikes?

For Bently Nevada 21508-02-12-05-02, inspect the unarmored lead near the case, the miniature coaxial mating surfaces, extension-cable support and target clearance. Flex the cable only under an approved offline test so a damaged conductor is not hidden by machine vibration.

How should Bently Nevada 21508-02-12-05-02 be stored as a critical spare?

Store Bently Nevada 21508-02-12-05-02 with the tip and miniature connector capped, the 0.5 m lead in a broad coil and the complete code visible. Keep it dry and avoid placing load on the reverse-mount body or cable transition.

What information should accompany a quotation for Bently Nevada 21508-02-12-05-02?

Provide Bently Nevada 21508-02-12-05-02 in full, plus the installed Proximitor, extension-cable number, system length, quantity and delivery destination. This separates the required 0.5 m connected probe from other 21508 legacy variants.

Quality & Warranty

Moore Automation

https://www.mvme.cn

Moore Automation keeps inspection, model identification and commercial records connected. Incoming and outgoing checks focus on the label, visible condition, connector protection and the configuration stated in the customer request.

For Bently Nevada 21508-02-12-05-02, the fixed reverse-mount code, cable-length suffix and connector suffix are retained together, supporting a clearer warranty record and reducing confusion with other 7200 probe geometries.

Identity checkFull legacy code compared

Condition reviewTip, lead and connector inspected

Warranty recordConfiguration tied to shipment

Moore Automation inspection and protected packing for industrial spare parts

More Products

Sales Enquiries

Match the legacy 7200 reverse-mount loop

ManagerLeonia

Emailsales@mvme.cn

WhatsApp+86 180 3017 5807

Product Name	Bently Nevada 21508-02-12-05-02 8 mm Reverse-Mount Proximity Probe
Item NO.	2931697
Weight	0.1 kg = 0.2205 lb = 3.5274 oz
Category	BENTLY NEVADA
Brand	Bently Nevada
Creation Time	2026-11-11

Bently Nevada 21508-02-12-05-02 8 mm Reverse-Mount Proximity Probe Item NO.: 2931697