Bently Nevada machinery protection components are among the most operationally critical parts in power generation, oil & gas, and heavy manufacturing — and they are also among the hardest to source when you need them fast. Apter Power maintains a verified in-stock inventory of Bently Nevada modules, proximity probes, transducers, and system racks, backed by a full 12-month warranty and same-day dispatch capability. Whether you are sourcing a 3500/22M Transient Data Interface, a 288055-01 proximity transducer assembly, or a complete 3500 rack configuration, every unit ships from confirmed stock — no 6–8 week lead times, no back-order uncertainty.
Bently Nevada Product Categories Available from Stock
Apter Power's Bently Nevada inventory covers the full machinery monitoring and protection ecosystem, organized across four functional groups.
3500 Machinery Protection System
The 3500 series is Bently Nevada's modular rack-based platform for continuous machinery protection. Key modules in stock include:
- 3500/22M Transient Data Interface (TDI) — The mandatory Slot 1 interface module that connects the 3500 rack to System 1 condition monitoring software. Supports both standard and Triple Modular Redundant (TMR) configurations. Part number 288055-01 is the most frequently requested variant in oil & gas applications.
- 3500/42M Proximitor/Seismic Monitor — Processes eddy-current proximity probe signals for radial vibration and shaft position measurement, plus casing-mounted seismic transducer inputs. Operating temperature: −40°C to +70°C.
- 3500/50 Tachometer Monitor (133388-02) — 2-channel module accepting proximity probe inputs. Operating range: 10–150 RPM; measurement resolution: 0.01 RPM; input signal range: +10.0 V to −24.0 V; power consumption: 5.8 W typical; IP67 rated.
- 3500/25 Enhanced Keyphasor Module — Phase reference module required for advanced vibration analysis in turbine and compressor protection applications.
3300 System
The 3300 XL series covers proximity probes and Proximitor sensors for legacy and current installations:
- 3300 XL 8 mm Proximity Probes (part numbers 330101-00-20-05-01-05 and variants) — Standard eddy-current probes for radial shaft vibration measurement.
- 3300 XL 16 mm High Temperature Proximitor Sensor — Designed for elevated-temperature environments such as gas turbine bearing housings.
- 3300 XL Extended Temperature Range (ETR) Extension Cable — Rated for high-temperature signal transmission between probe and Proximitor.
Proximity Transducer Assemblies & Housing
Bently Nevada's externally installed proximity probe housings span three primary series — 21000, 24701, and 164818 — each engineered for specific installation geometries and compliance certifications. The NSv Proximity Probe and PROXPAC XL Proximity Transducer cover newer platform requirements, while legacy housing assemblies remain available for installed-base maintenance.
Seismic & Velocity Transducers
Velomitor CT Transducer — Casing-mounted velocity transducer for seismic vibration measurement on bearing housings and machine casings.
Industrial Applications — Where Bently Nevada Systems Are Deployed
Bently Nevada machinery protection systems are standard equipment in facilities where rotating machinery failure carries high financial and safety consequences.
| Industry |
Typical Application |
Key Bently Nevada Function |
| Power Generation (Gas & Steam Turbine) |
Turbine shaft monitoring, Keyphasor phase reference |
Radial vibration, axial position, overspeed protection |
| Oil & Gas (Upstream & Downstream) |
Compressor trains, pump protection |
Proximity monitoring, seismic casing vibration |
| Petrochemical & Chemical Plants |
Centrifugal pumps, agitators |
Continuous protection, alarm & trip logic |
| Wind Energy |
Gearbox and generator bearing monitoring |
Vibration trending, condition monitoring |
| Water & Wastewater |
Large pump stations |
Shaft displacement, bearing protection |
| Automotive & Electronics Manufacturing |
High-speed spindles, precision drives |
Vibration measurement, tachometer input |
The 3500/22M TDI module is specifically noted as a high-demand part in oil & gas country operations, where continuous uptime requirements make fast spare availability non-negotiable. The 3500/42M monitor protects turbines, compressors, and gearboxes simultaneously through its dual proximity and seismic signal paths — a single module covering both shaft and casing measurement.
How to Select the Right Bently Nevada Module
Selecting the correct Bently Nevada replacement part requires matching three parameters: rack slot function, signal input type, and part number suffix.
Step 1 — Identify the rack slot
Every 3500 rack requires a TDI (3500/22M) or RIM in Slot 1. Monitor modules occupy subsequent slots. Confirm your existing slot assignment before ordering a replacement card.
Step 2 — Match the signal type
- Eddy-current proximity probe signals → 3500/42M Proximitor/Seismic Monitor or 3300 XL Proximitor Sensor
- Velocity/seismic signals → Velomitor CT or 3500/42M seismic channel
- Tachometer/phase reference → 3500/50 or 3500/25 Keyphasor
Step 3 — Confirm the part number suffix
Bently Nevada uses suffix codes to designate configuration variants (e.g., TMR vs. standard, temperature range, cable length). The 288055-01 suffix on the 3500/22M denotes the standard non-TMR TDI configuration. For TMR applications, a separate TMR-designated TDI is required.
Step 4 — Verify operating environment
For installations near gas turbine hot sections, specify High Temperature or ETR-rated probes and cables. Standard 3300 XL 8 mm probes are rated for general industrial environments; the 16 mm High Temperature variant is specified for bearing housing temperatures exceeding standard limits.
Condition options available from Apter Power:
- New original (factory sealed)
- Surplus / unused old stock
- Refurbished (tested, with 12-month warranty)
Why Procurement Teams Choose Apter Power for Bently Nevada Parts
Apter Power's position in the Bently Nevada aftermarket is built on three operational commitments that directly address the procurement pain points most common in industrial maintenance.
Confirmed in-stock inventory, not catalogue listings
Unlike distributors that list parts and then source them, Apter Power ships from physical stock held in Xiamen, China, with global logistics to North America, Europe, the Middle East, and Southeast Asia. The collection page displays real-time "In Stock" status on each listed unit.
12-month warranty on all Bently Nevada parts
Every unit — new, surplus, or refurbished — ships with a full 12-month warranty. This covers both new original and discontinued inventory parts, which is critical for facilities maintaining legacy 3500 racks where OEM support has been reduced.
7×24 multi-channel response
Apter Power operates across time zones via WhatsApp (+86 18030235313), WeChat, and email (sales13@apterpower.com). Fast quote turnaround reduces the procurement cycle for emergency replacement orders — a direct response to the industry pain point of extended lead times from authorized distributors.
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