Bently Nevada

Founded in 1961 in Minden, Nevada by Don Bently — a former Bechtel engineer — Bently Nevada pioneered the eddy-current proximity probe technology that is now the global standard for measuring shaft vibration, position, and speed in rotating machinery. Over six decades, the company has grown from a small precision-instruments workshop into the world's most trusted machinery-protection brand, with more than one million proximity probes installed across the process industries.

Why Bently Nevada Is the Industry Standard

Bently Nevada equipment protects the majority of the world's largest turbomachinery trains — from 600 MW steam turbines in combined-cycle power plants to LNG compressor strings in Qatar and offshore platforms in the North Sea. The 3500 Series rack, introduced in the 1990s and continuously upgraded since, is recognized as the reference architecture for API 670 machinery protection systems. Its triple-redundant design, hot-swappable modules, and BNC-style buffered outputs make it the preferred choice for SIL-2 and SIL-3 safety instrumented functions in critical rotating equipment.

Core Product Families

3500 Series Machinery Protection System: The flagship monitoring rack, supporting vibration, axial position, differential expansion, speed, and key-phasor channels in any combination. Each channel is independently configurable through the 3500 Configuration Software and supports Modbus, Ethernet, and proprietary protocol outputs to DCS and ESD systems.

3300 Series Proximity Probes & Extension Cables: The 5 mm and 8 mm probe families cover the vast majority of standard machinery protection applications. Probes are matched with armored extension cables in lengths from 1 m to 9 m, terminated with twist-lock connectors for vibration-resistant field installation.

1900/65A General Purpose Monitor: A compact 6-channel monitor designed for less-critical rotating equipment where full 3500 functionality is not required. Ideal for smaller motors, fans, and pumps in non-classified areas.

System 1 Condition Monitoring Software: The enterprise-level software platform that ties together protection and prediction. System 1 ingests real-time waveforms from the 3500 rack, performs automated fault detection, and provides event-based diagnostics aligned to ISO 10816 and API 670 machinery health thresholds.

Our Supply Capability

Glorient stocks the most common Bently Nevada spare parts for European and US customers, including 3500/42M proximity probes, 3500/15 power supplies, 3500/22M transient data interfaces (TDI), 3500/25 enhanced keyphasor modules, 3300 XL 8 mm probes with standard 5 m and 7 m cables, and the full 3300 RAM / 3300 NSV probe families. All modules are traceable to the original manufacturer and supported with documentation packages for end-user qualification.

For obsolete or hard-to-find part numbers, our sourcing team regularly locates 3500 series components that have been discontinued in North America but are still in service on legacy turbomachinery trains. We support API 670 retrofit projects where customers are migrating from older 7200 / 3300 systems to the latest 3500 architecture.