Bently Nevada

Bently Nevada 21000-00-00-00-000-00-02 Proximity Probe Housing Assemblies

SKU 221000-00-00-00-000-00-02

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Bently Nevada

  • Product No.: 221000-00-00-00-000-00-02

  • Country of origin:United States

  • Product Type: Proximity Probe Housing Assemblies

  • Barcode: 8537101190

  • Payment: T/T, Western Union

  • Weight: 1100g

  • Dimensions: 162 mm x 84 mm x 84 mm (H x W x D)

  • Shipping port: Xiamen

  • Warranty: 12 months

Description

The Bently Nevada 21000-00-00-00-000-00-02 is an all-metal aluminum proximity probe housing assembly designed for external mounting of proximity probes in rotating machinery monitoring systems. As a core external mounting component within Bently Nevada machinery protection architectures, this housing features a threaded dome cover that screws into the aluminum housing body, threaded ports for conduit connections, O-rings, and a thread seal to safeguard internal transducer assemblies.

This specific configuration 21000-00-00-00-000-00-02 is supplied without an internal probe pre-installed (Probe Option 00) and without a probe cable (Cable Option 00), allowing customized field integration of compatible Bently Nevada reverse mount proximity probes. It is built without a standoff adapter (Standoff Adapter Option 00) and features a standard minimum probe penetration configuration (Penetration Option 000). The assembly is supplied without conduit fittings (Fittings Option 00) and incorporates a 3/4-14 NPT mounting thread (Mounting Thread Option 02) with 5 to 7 full machined threads to ensure high structural mounting strength and stiffness on machine casings. Fully compliant with API 670 standards for externally mounted proximity probe housings, it provides robust environmental protection and mechanical support in industrial machinery protection and condition monitoring applications.

Features

  • All-Metal Aluminum Body Structure: Manufactured with an aluminum housing body and a 304 stainless steel sleeve for mechanical strength and durability.
  • API 670 Compliant: Fully compliant with the American Petroleum Institute (API) 670 Standard for externally mounted proximity probe housings.
  • Threaded Dome Cover: Features a screw-in dome cover with integrated O-ring sealing to protect internal electrical connections.
  • High-Stiffness Mounting Threads: Machined with 5 to 7 full 3/4-14 NPT threads (Option 02) to enhance mechanical mounting stability and prevent resonance.
  • Flexible Sensor Integration: Designed to accommodate reverse mount proximity probes for vibration, thrust, and phase reference measurements.

Applications

  • Machinery protection and condition monitoring systems
  • Externally mounted proximity probe protection on bearing housings and machine casings
  • Vibration, keyphasor, and axial position monitoring in industrial rotating equipment

Ordering Information

Option Code Description
21000 Aluminum Proximity Probe Housing Assembly
A: 00 Probe Not Required
B: 00 Probe Cable Not Required
C: 00 No Standoff Adapter
D: 000 Probe Penetration Dimension (Standard Minimum / Unconfigured)
E: 00 Without Fittings
F: 02 3/4-14 NPT Mounting Thread

Technical Specifications

Parameter Specification
Manufacturer Bently Nevada (Baker Hughes)
Model 21000-00-00-00-000-00-02
Housing Material Aluminum body
Sleeve Material 304 Stainless Steel
Mounting Thread (Option F) 3/4-14 NPT (Machined with approximately 5 to 7 full threads)
Probe Option (Option A) 00 (Probe not required)
Cable Length Option (Option B) 00 (Probe cable not required)
Standoff Adapter Option (Option C) 00 (No standoff adapter)
Probe Penetration Option (Option D) 000
Fittings Option (Option E) 00 (Without fittings)
Mass (Weight) 1.1 kg (2.4 lb) typical (without fittings)
Dome Cover Diameter 83.3 mm (3.28 in)
Body Height (Dimension B) 161.6 mm (6.36 in)
Compliance Standard API 670

Installation Guidelines

  • Mounting Thread Engagement: Ensure proper thread engagement with the 3/4-14 NPT mounting port on the machine casing to achieve full structural stiffness (5 to 7 full threads).
  • Probe Penetration & Counter Boring: For probe penetration lengths between 1.0 and 2.0 inches, counter bore the machine case if necessary to prevent probe side-view or rear-view metal interference effects.
  • Sleeve Support Requirements: If total probe penetration length (Option C plus Option D) exceeds 300 mm (12 in), install additional sleeve support (such as Bently Nevada part number 37948-01) near the probe tip to prevent mechanical resonance.
  • Environmental Sealing: Ensure the dome cover O-rings and thread seals are correctly seated during installation to maintain enclosure integrity against moisture and contaminants.

Compliance and Certifications

Certification / Standard Detail
API 670 Compliant with American Petroleum Institute API 670 Standard for externally mounted proximity probe housings
RoHS European Community Directive ROHS Directive 2011/65/EU
CSA Hazardous Area Approval CA21000 versions certified Class I Div 1/2 Groups C, D; Class II Div 1/2 Groups E, F, G; Class III; Enclosure Type 4

FAQ

What is the primary material of the housing body?

The housing body is constructed from aluminum, and the sleeve is made of 304 stainless steel.

Does this specific part number include a proximity probe?

No, option A00 indicates that the assembly is supplied without a probe pre-installed.

What standard does this proximity probe housing comply with?

The assembly is fully compliant with the American Petroleum Institute (API) 670 Standard for externally mounted proximity probe housings.

What mounting thread size is supplied on option F02?

Option F02 specifies a 3/4-14 NPT mounting thread machined with 5 to 7 full threads for high structural strength.

View all FAQs →

Product Documentation

Technical Datasheet (PDF) Complete specifications and technical drawings.

Technical Datasheet

Bently Nevada 21000-00-00-00-000-00-02 Proximity Probe Housing Assemblies

Quantity
Shipping & Returns

Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
Reviews
1 of 3
Only 7 item(s) left in stock
Quantity
View full details

Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
United States

Technical knowledge

Engineering Logix Produced and Consumed Tags

A field-ready guide to Logix produced and consumed tags, covering data contracts, RPI selection, connection status, stale-data handling, commissioning and controller-to-controller troubleshooting.

Commissioning AS-Interface Networks Without Guesswork

A practical AS-Interface commissioning method covering topology, power and voltage-drop checks, addressing, PLC mapping, fault tests and maintenance records for reliable actuator-sensor networks.

Selecting Line Reactors and Output Filters for VFDs

Learn how line reactors, harmonic filters, output reactors, dV/dt filters, and sine filters address different VFD power-quality and motor-cable problems—and how to select them safely.

Light-On and Dark-On Photoelectric Sensor Logic

Learn how light-on and dark-on photoelectric sensor modes interact with through-beam, retroreflective, and diffuse sensing, PNP/NPN wiring, PLC logic, commissioning, and fault detection.

Designing H-Bridge Motor Drives Without Shoot-Through

A practical guide to H-bridge motor drives covering switching states, dead time, inductive current paths, PWM choices, protection, PCB layout, PLC interfacing, and staged commissioning tests.

Designing Mitsubishi FX PLC Sequences with STL and RET

Learn how Mitsubishi FX PLC STL and RET instructions structure conveyor and pneumatic sequences, with practical state design, transition logic, timeouts, diagnostics, and safe restart boundaries.