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Home > Products > Bently Nevada >
Bently Nevada 21508-02-12-05-02 Legacy 7200 Series 8 mm eddy-current probe

Bently Nevada 21508-02-12-05-02 Legacy 7200 Series 8 mm eddy-current probe

7200 Series eddy-current probe

8 mm eddy-current probe

Bently Nevada 21508-02 probe

Place of Origin:

USA

Brand Name:

Bently Nevada

Model Number:

21508-02-12-05-02

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Request A Quote
Bently Nevada 21508-02-12-05-02 Legacy 7200 Series 8 mm eddy-current probe Bently Nevada 21508-02-12-05-02 Legacy 7200 Series 8 mm eddy-current probe Bently Nevada 21508-02-12-05-02 Legacy 7200 Series 8 mm eddy-current probe
Product Details
Highlight:

7200 Series eddy-current probe

,

8 mm eddy-current probe

,

Bently Nevada 21508-02 probe

Payment & Shipping Terms
Minimum Order Quantity
1
Packaging Details
Brand new and original
Delivery Time
2-3 work days
Payment Terms
T/T
Supply Ability
in Stock
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Product Description
BENTLY NEVADA · 7200 SERIES PARAMETERSFAQ
REVERSE-MOUNT PROXIMITY PROBE
21508-02-12-05-02

Legacy 7200 Series 8 mm eddy-current probe built for reverse mounting through a 3/8-24 threaded case.

Measures shaft-relative displacement for radial vibration, axial position and phase-marker applications when paired with the correct 7200 extension cable and Proximitor.
↕
Reverse mount
◎
8 mm tip
⌁
0.5 m lead
2.0 mm
LINEAR RANGE		 7.87 V/mm
SYSTEM SCALE		 0–10 kHz
RESPONSE		 3/8-24
UNF THREAD
01 · REVERSE-MOUNT GEOMETRY

Built for access from the cable side

①
Machine bracket
②
Reverse thread
③
8 mm tip
④
Shaft target

Reverse mounting changes physical access, not the eddy-current principle. Confirm bracket depth, wrench clearance and cable exit direction before replacing a probe.

02 · TECHNICAL PROFILE

◆The complete code defines the assembly

This legacy probe belongs to a matched 7200 electrical chain. Use the exact family and total system length.
ATTRIBUTE VALUE
Family 7200 Series 5 mm / 8 mm system
Probe construction 8 mm reverse mount, unarmored
Case thread 3/8-24 UNF
Integral lead 0.5 m nominal
Termination Miniature male coaxial connector
Calibrated range 2.0 mm (80 mil)
Nominal scale factor 7.87 V/mm (200 mV/mil)
Frequency response 0 to 10 kHz; -5% at 10 kHz
Probe / cable temperature -34 to +177°C
03 · SYSTEM RELATIONSHIP

A 0.5 m probe in a 5 m or 9 m chain

◉
21508 probe
0.5 m integral lead		 ≈
21747 extension
Completes electrical length		 ▣
18745 Proximitor
5 m or 9 m version

For a 5 m system, pair the 0.5 m probe with the applicable 4.5 m extension cable and 18745-03 Proximitor. For a 9 m system, use the matching 8.5 m extension cable and 18745-04 Proximitor.

04 · INSTALL AND COMMISSION

4Four checks before accepting the channel

01 · FIT
Confirm reverse access		 02 · ROUTE
Protect coax lead		 03 · MATCH
Complete system length		 04 · GAP
Set within linear zone

Keep the coaxial connection clean and strain-free, avoid sharp bends, tighten the probe with suitable jam-nut control and verify bias voltage plus dynamic response after assembly.



AMIKON / INDUSTRIAL SPARES
SINCE 2005

Keep maintenance moving
without visual clutter.

PLC, HMI, DCS, industrial PC and drive components supported for planned work and urgent recovery.

DIRECT CONTACT
sales@amikon.cn
WhatsApp: 86-18020776792
05 · FAMILY COMPARISON

Legacy 7200 probe choices

MODEL MOUNT / THREAD KEY DIFFERENCE
21504 Standard / 3/8-24 Unarmored standard entry
21505 Standard / 3/8-24 Stainless-steel lead armor
21508-02-12 Reverse / 3/8-24 Access from cable side
22810 / 22811 Standard / M10 × 1 Metric-thread alternatives
06 · ENGINEERING FAQ

◇Questions that affect measurement integrity

Ⓠ Why can 21508-02-12-05-02 not be paired with any available extension cable?

The combined probe and extension cable length must match the 5 m or 9 m 18745 Proximitor calibration. Wrong electrical length changes scale factor and linearity.

Ⓠ What installation problem is unique to 21508-02-12-05-02 reverse mounting?

Bracket depth and cable-side tool access can prevent correct insertion or jam-nut tightening even when the thread matches.

Ⓠ Why can 21508-02-12-05-02 show a different scale factor on a spare shaft target?

Eddy-current response changes with target conductivity and permeability. Acceptance limits should account for the actual shaft alloy.

Ⓠ Can 21508-02-12-05-02 be replaced directly by a 3300 XL 8 mm probe?

Not as a component-only swap. The 7200 and 3300 XL families use different matched chains, so probe, cable, Proximitor and physical fit must be assessed together.

Ⓠ What does a stable bias voltage prove for 21508-02-12-05-02?

It supports correct gap and continuity, but a controlled dynamic check is still needed to confirm vibration response through the complete channel.

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LEGACY SYSTEM SUPPORT
Confirm reverse fit and electrical length
Sales Manager: Miya Zheng		 sales@amikon.cn
WhatsApp: 86-18020776792
Tags：

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