Product Brief: Bently Nevada 330180-X0-00 285446 (3300 XL 8mm Probe Cable Assembly)
The 330180-X0-00 285446 is a cable assembly for the Bently Nevada 3300 XL 8mm Proximity Probe System. This assembly connects the 3300 XL 8mm proximity probe (sensor tip) to the 3300 XL Proximitor (driver/conditioner). The "X0" in the part number indicates a user-specified cable length, while 285446 is an internal manufacturing or drawing control number for this cable series.
This cable is a critical component of the eddy current probe system used for measuring shaft radial vibration, axial (thrust) position, eccentricity, and differential expansion on rotating machinery. It features a ClickLoc™ or microdot connector at the probe end and a BNC or terminal connector at the Proximitor end, depending on the specific variant.
Key Features
Integrated cable – permanently attached to the probe tip (or user-assembled).
3300 XL series – high-temperature, high-stability cable for industrial environments.
Length ordered separately – "X0" indicates length in feet or inches (e.g., 180, 185, 190, etc.).
Low noise – coaxial construction with shielding for electrical noise immunity.
Compatible with all 3300 XL 8mm proximity probes and 3300 XL Proximitors (e.g., 330180-90-00).
Operating temperature -51°C to +177°C (-60°F to +350°F) depending on cable jacket.
Parameters (Table)
| Parameter | Specification |
|---|---|
| Model Series | 3300 XL 8mm |
| Part Number Base | 330180-X0-00 (X0 = user-specified length) |
| Reference Number | 285446 (internal drawing/control number) |
| Product Type | Proximity probe cable assembly |
| Cable Length (X0) | Field specified – typical lengths: 5.0 m, 6.0 m, 7.0 m, 8.0 m, 9.0 m (16.4 ft to 29.5 ft) |
| Cable Diameter | 4.6 mm (0.18 in) |
| Cable Weight (approx.) | 0.06 kg per meter (0.04 lb per foot) – e.g., 5.0 m cable ≈ 0.30 kg (0.66 lb) |
| Connector Type (Probe End) | ClickLoc™ / microdot (male) – attaches to 3300 XL 8mm probe |
| Connector Type (Proximitor End) | BNC male or stripped/tinned leads (depends on suffix) |
| Jacket Material | FEP (Teflon®) or ETFE – chemical resistant, high temperature |
| Conductor | Silver-plated copper center conductor |
| Shielding | Braided copper shield (95% coverage) |
| Capacitance | 88 pF/m (27 pF/ft) typical |
| Impedance | 50 ohms (nominal) |
| Maximum Cable Length | 305 m (1000 ft) for 3300 XL system – but typically < 10 m for most installations |
| Operating Temperature | -51°C to +177°C (-60°F to +350°F) |
| Storage Temperature | -51°C to +177°C (-60°F to +350°F) |
| Bend Radius (minimum) | 25 mm (1.0 in) – dynamic; 13 mm (0.5 in) – static |
| Approvals | CE, CSA, ATEX (for use in hazardous areas with IS barriers) |
Application Scenarios (use cases)
| Application Area | Description |
|---|---|
| Steam Turbine Radial Vibration | Connects 3300 XL 8mm probe mounted in turbine bearing to Proximitor in junction box. |
| Gas Turbine Axial Position (Thrust) | Cable runs from probe in compressor/turbine section to Proximitor located in safe area. |
| Centrifugal Compressor Shaft Vibration | Used with X-Y probe pairs for API 670 compliant monitoring – two cables per bearing. |
| Hydro Turbine Shaft Runout (Eccentricity) | Low-speed eccentricity monitoring during startup; cable must handle moisture/humidity. |
| Generator Rotor Vibration | High-temperature cable (FEP jacket) for generator end windings where ambient temperature is elevated. |
| Turboexpander / LNG Compressor | Short cable lengths (e.g., 5–7 m) used for compact machinery trains with local Proximitor racks. |
| Pump & Fan Critical Trains | Where 3300 XL probes are retrofitted for critical overhung or sleeve bearing pumps. |
| Test Stand / Bearing Development Rig | Temporary or permanent installation on rotor dynamics test stands – flexible cable routing. |
Notes
The "X0" must be replaced with a number representing cable length in inches (e.g., 180 = 180 inches = 4.57 meters). Common lengths:
180 = 180 in (15 ft / 4.57 m)
240 = 240 in (20 ft / 6.10 m)
300 = 300 in (25 ft / 7.62 m)
360 = 360 in (30 ft / 9.14 m)
285446 is a Bently internal reference number and not required for ordering; the primary ordering number is 330180-X0-00.
This cable is not intrinsically safe by itself – for hazardous area installations, pair with Bently Nevada IS barrier (e.g., 3300 XL IS system) or 3500/42M monitor with internal barriers.
Do not exceed maximum total cable length (probe to Proximitor) – total cable length (probe cable + extension cable) must be ≤ 305 m (1000 ft). For standard systems, use extension cable 330190-X0-00 if additional length is needed.
Cable jacket color typically black for standard, blue for high-temperature. Verify temperature rating matches application (standard FEP to 177°C, ETFE to 200°C).
The connector at the Proximitor end may be either BNC (for standard Proximitor) or stripped leads (for terminal block Proximitors). Check your Proximitor input type before ordering.
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