21000-28-05-00-40-03-02 | Bently Nevada Probe Housing

The Bently Nevada 21000-28-05-00-40-03-02 is a Probe Option for industrial control and automation applications.

Bently Nevada 21000-28-05-00-40-03-02 is a proximity probe housing assembly designed for reliable, precise mounting of reverse-mount proximity probes in industrial machinery protection systems. This genuine Bently Nevada original spare part includes a 3300 XL 8 mm probe with a 0.5 m (20 in) cable, an aluminum body with a 304 stainless steel sleeve, and a 3/4-14 NPT mounting thread. It is rated explosion-proof for hazardous areas and certified as a CSA Type 4 enclosure.

Key Specifications of the 21000-28-05-00-40-03-02

• Probe Option: 28 – 3300 XL 8 mm probe, selectable hazardous area approvals
• Probe Cable Length: 0.5 m (20 in)
• Probe Penetration: 4.0 in
• Mounting Thread: 3/4-14 NPT
• Fitting Option: One 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, one cable seal grip with grommets for cable sizes 1/8 to 3/16 inches, 1/4 to 5/16 inches, and 5/16 to 3/8 inches
• Material: Aluminum body with 304 stainless steel sleeve
• Weight: 1.1 kg (2.4 lb) typical, without fittings
• Standoff Adapter: No standoff adapter (00)

What Applications Suit This Probe Housing Assembly?

This unit is engineered for use in hazardous areas where explosion-proof protection is mandatory. Its CSA certification covers Class I Divisions 1 and 2 Groups C and D, Class II Divisions 1 and 2 Groups E, F, and G, and Class III. The assembly is fully compliant with API 670 for externally mounted proximity probe housings, making it suitable for critical rotating machinery such as turbines, compressors, and pumps in oil and gas, petrochemical, and power generation facilities. The reverse-mount probe design allows for precise gap setting and reliable vibration measurement.

Buyer’s Guide: What to Verify Before Ordering

When selecting This unit, confirm that your system requires a 3300 XL 8 mm probe with a 0.5 m cable and a 4.0 in probe penetration. The 3/4-14 NPT mounting thread must match your machine casing. Note that this configuration includes no standoff adapter; if your installation requires one, a different option code is necessary. The fitting option provides a 3/4-14 NPT plug, a reducer to 1/2-14 NPT, and a cable seal grip with grommets for three cable size ranges. As a TenBN authorized distributor, we supply genuine Bently Nevada original spare parts with fast global shipping from China and competitive pricing for industrial MRO. Contact TenBN for Bently Nevada parts pricing and availability.