Bently Nevada 21000-34-05-20-018-03-02 Probe Housing

The Bently Nevada 21000-34-05-20-018-03-02 is a Probe Option for industrial control and automation applications.

Bently Nevada 21000-34-05-20-018-03-02 is a proximity probe housing assembly built for reliable shaft measurement in hazardous areas. It combines a 3300 XL 8 mm probe with a 0.5 m cable and a CSA-certified explosion-proof housing.

For decades, vibration monitoring has evolved from simple periodic checks to continuous, integrated protection systems. The 21000 series reflects that shift: a housing that protects the probe, simplifies installation, and meets stringent safety standards.

Key Specifications of the 21000-34-05-20-018-03-02

• Probe Option: 3300 XL 8 mm probe with connector protector and selectable hazardous area approvals
• Probe Cable Length: 0.5 m (20 in)
• Standoff Adapter: 2.0 in
• Probe Penetration: 1.8 in
• Fitting Option: One 3/4-14 NPT plug, one 3/4-14 to 1/2-14 NPT reducer, and one cable seal grip with grommets for cable sizes 1/8 to 3/16 in, 1/4 to 5/16 in, and 5/16 to 3/8 in
• Mounting Thread: 3/4-14 NPT
• Material: Aluminum body with 304 stainless steel sleeve
• Temperature Range (3300 XL 8 mm Probe): -51°C to +177°C (-60°F to +351°F)
• Weight: 1.1 kg (2.4 lb) typical, without fittings

Applications and Compatibility

The assembly suits rotating machinery such as turbines, compressors, and pumps where API 670 compliance is required. The 21000 housing is certified as a CSA Type 4 enclosure and fully compliant with API 670 for externally mounted proximity probe housings. It works with 3300 XL 8 mm probes and is available with CSA approvals for explosion-proof and intrinsically safe applications.

Installation and Maintenance

Install the housing using the 3/4-14 NPT mounting thread. The standoff adapter and probe penetration dimensions are fixed by the suffix codes. The fitting option provides a plug, reducer, and cable seal grip for cable management. For maintenance, inspect the dome cover and O-rings periodically to ensure a proper seal. Always follow the manufacturer’s safety manual for hazardous area installations.

Why Choose TenBN for Bently Nevada Parts?

As a TenBN authorized distributor, we supply genuine Bently Nevada original spare parts with fast global shipping from China. Our competitive pricing supports industrial MRO budgets. Contact TenBN for Bently Nevada parts pricing and availability.