Bently Nevada 21022-28-10-XXX-02 MOD 17480-122 – Dual Axial Probe Housing Assembly

The Bently Nevada 21022-28-10-XXX-02 MOD 17480-122 is a dual axial probe housing assembly. Specifically, this assembly consists of two proximity probes. These probes install in an externally mounted protective enclosure. Furthermore, the housing mounts on the machine end near the thrust bearing. Consequently, both probes observe the shaft end for axial thrust position movement.

Intended Application and Function

The enclosure mounts on the machine case using four standard machine screws. Meanwhile, the probes mount in sleeve and adapter assemblies. These assemblies install directly onto the machine case. They pass through two 3/4-inch NPT threaded holes. Therefore, the Bently Nevada 21022-28-10-XXX-02 monitors axial thrust position accurately.

Ordering Configuration and Options

• Probe Option (28): 3300 XL 8 mm probe with multiple approvals.

• Probe Cable Length (10): 1.0 metre (39 inches).

• Probe Penetration Option (XXX): User-specified penetration length.

• Fittings Option (02): Two 3/4-14 NPT fittings and two 3/4-14 NPT plugs.

• MOD Number: 17480-122 (modified configuration).

• Fittings Note: Supplied as a kit (not installed when housing ships).

• Made In: U.S.A.

• Thus, the Bently Nevada 21022-28-10-XXX-02 offers flexible penetration options.

API 670 Compliance and Standards

• API Standard: Meets American Petroleum Institute 670 Standard.

• Application: Axial thrust position transducer housings.

• Compliance: Industry-recognized for critical machinery monitoring.

• Purpose: Ensures reliable thrust position measurement.

• Consequently, this housing meets rigorous industry requirements.

Probe Penetration Guidelines

• Penetration Option: XXX indicates custom penetration length.

• Order Increments: 0.1 inch (2.54 mm) for 21022 series.

• Sleeve Adjustment Range: ±13 mm (±0.5 inch) available.

• Long Penetration Note: Lengths exceeding 305 mm (12 inches) require additional sleeve support.

• Support Purpose: Prevents resonance from occurring near the probe.

• Counter-bore Requirement: For penetrations between 1.0 and 2.0 inches.

• Counter-bore Purpose: Reduces probe side view and rearview effects.

• UK0104 Note: Order in increments of 0.5 inch (13 mm) for that variant.

• Therefore, careful penetration planning ensures optimal performance.

Housing Materials and Construction

• Housing Material: Aluminum alloy sand cast construction.

• Aluminum Specification: 0.3% copper free material.

• Sleeve Material: 304 stainless steel fabrication.

• Durability: Resists corrosion and environmental damage.

• Weight: 3.6 kg (8 lb) total assembly weight.

• Cover: Removable for probe gap access.

• Mounting: Four standard machine screws required.

• Moreover, the Bently Nevada 21022-28-10-XXX-02 uses high-quality materials throughout.

Environmental Protection Features

• External Mounting: Allows adjustments from outside the machine.

• Protection Provided: Shields probes, leads, and extension cables.

• Hazards Prevented: Dust, splashing liquid, and environmental factors.

• Access: Removable cover for setting probe gaps.

• Threaded Holes: Two 3/4-inch NPT penetrations.

• Fittings Kit: Two NPT fittings and two NPT plugs included.

• Installation Note: Fittings require field installation.

• Therefore, the Bently Nevada 21022-28-10-XXX-02 protects sensitive components effectively.

Installation Guide

First, determine the required probe penetration length for your machine. Then, specify the XXX option in 0.1 inch increments. After that, verify if penetration exceeds 305 mm (12 inches). If so, additional sleeve support will be necessary. Next, check if penetration falls between 1.0 and 2.0 inches. A counter-bore may be required in the machine case for this range. Then, locate the machine end nearest the thrust bearing. Prepare two 3/4-inch NPT threaded holes in the machine case. Subsequently, install the supplied 3/4-14 NPT fittings into these holes. Next, mount the housing enclosure using four standard machine screws. Then, insert the sleeve and adapter assemblies through the fittings. Install the 3300 XL 8 mm probes into the sleeves. Connect the 1.0 metre probe cables to extension cables carefully. Afterward, adjust probe penetration using the ±13 mm sleeve adjustment range. Finally, set the probe gaps using the removable cover access. As a result, the Bently Nevada 21022-28-10-XXX-02 will provide accurate axial thrust monitoring.

Packaging List

• One Bently Nevada 21022-28-10-XXX-02 MOD 17480-122 dual axial housing assembly

• Two 3300 XL 8 mm proximity probes (1.0 metre cable length)

• Two sleeve and adapter assemblies (304 stainless steel)

• Two 3/4-14 NPT fittings (kit form, not installed)

• Two 3/4-14 NPT plugs (kit form, not installed)

• One removable cover with screws

• One installation and gap setting guide

Common FAQs

Q1: How do I specify the probe penetration length for this housing?
A: Use the XXX option for custom penetration length. Order in increments of 0.1 inch (2.54 mm) for the 21022 series. For reference, the sleeve adjustment range is ±13 mm (±0.5 inch).

Q2: What happens if my penetration exceeds 12 inches?
A: Penetration lengths greater than 305 mm (12 inches) require additional sleeve support. This support prevents resonance from occurring near the probe. Therefore, always account for this during ordering.

Q3: Does the Bently Nevada 21022-28-10-XXX-02 meet API standards?
A: Yes, absolutely. This housing meets API 670 Standard. Specifically, this standard covers axial thrust position transducer housings. Consequently, it suits critical turbomachinery applications.

Q4: When is a counter-bore required in the machine case?
A: A counter-bore may be required for penetrations between 1.0 and 2.0 inches. This counter-bore reduces probe side view and rearview effects. Thus, it improves measurement accuracy significantly.

Q5: Are the fittings pre-installed when the housing ships?
A: No, the fittings option comes as a kit. Specifically, option 02 includes two 3/4-14 NPT fittings and two plugs. You must install these fittings in the field.