KYKY Grease-Lubricated Turbo Molecular Pump Series

Overview

The KYKY Grease-Lubricated Turbo Molecular Pump Series is a family of high-vacuum pumping systems engineered for stable, oil-free, and maintenance-optimized operation in demanding scientific and industrial vacuum environments. Unlike traditional oil-lubricated or magnetic-bearing turbo pumps, this series employs precision-engineered grease-lubricated bearings—designed to eliminate hydrocarbon backstreaming while maintaining mechanical robustness under continuous duty cycles. Each pump operates on the principle of momentum transfer: high-speed rotating turbine blades (typically 20,000–90,000 rpm depending on model) impart kinetic energy to gas molecules, directing them toward the exhaust stage where they are captured by a backing pump (e.g., dry scroll or diaphragm pump). The result is clean, vibration-minimized high vacuum (10⁻⁷–10⁻⁹ mbar base pressure range) suitable for ultra-sensitive analytical and thin-film applications.

Key Features

• Grease-lubricated bearing system: Eliminates risk of oil vapor contamination; ideal for mass spectrometry, surface science, and optical coating where hydrocarbon-free vacuum is mandatory.
• Multi-stage rotor-stator architecture: Optimized blade geometry across FF and F-series models ensures high compression ratios for light (H₂, He) and heavy (Ar, N₂) gases.
• Integrated controller compatibility: Supports analog (0–10 V) and digital (RS-485/Modbus RTU) interface protocols for seamless integration into automated vacuum systems.
• Thermal management design: Aluminum alloy housing with finned heat dissipation enables sustained operation at ambient temperatures up to 40 °C without forced cooling.
• CE-compliant electromagnetic compatibility (EMC) and low-noise motor drive: Meets EN 61000-6-3 and EN 61000-6-4 standards for laboratory and cleanroom deployment.
• Backside flange options: ISO-KF (DN25/DN40/DN63), ISO-F (DN100/DN160/DN200), and CF (150 mm/200 mm) configurations available per model for flexible chamber interfacing.

Sample Compatibility & Compliance

These pumps are compatible with inert, non-corrosive, and non-condensable process gases typical in UHV and HV applications—including N₂, Ar, O₂, H₂, and He. They are not rated for solvent vapors, halogenated compounds, or acidic gases (e.g., Cl₂, HF) without upstream cold traps or chemical scrubbers. All models comply with ISO 21028-1 (safety requirements for vacuum pumps) and conform to RoHS Directive 2011/65/EU. For regulated environments—such as GLP-compliant analytical labs or ISO 17025-accredited testing facilities—the pumps support audit-ready documentation packages including factory calibration reports and traceable serial-number logs.

Software & Data Management

While the KYKY series does not include proprietary closed-source software, each pump’s controller provides standardized analog/digital I/O signals compatible with third-party SCADA platforms (e.g., LabVIEW, EPICS, Siemens SIMATIC) and vacuum system controllers (e.g., Pfeiffer Vacuum MCP, Edwards iQ). Real-time parameters—including rotational speed (rpm), bearing temperature (°C), inlet pressure (mbar), and fault status—are accessible via Modbus registers. Optional data logging modules enable timestamped CSV export for trend analysis, preventive maintenance scheduling, and 21 CFR Part 11–compliant electronic records when deployed with validated acquisition software.

Applications

• Mass spectrometry (MS) and residual gas analysis (RGA): Stable, hydrocarbon-free vacuum preserves detector sensitivity and reduces spectral interference.
• Physical vapor deposition (PVD) and sputtering: Enables uniform film growth on ITO, Low-E, and optical coatings by minimizing particulate generation and pressure fluctuations.
• Electron microscopy (SEM/TEM) sample chambers: Delivers low-vibration pumping essential for high-resolution imaging stability.
• Accelerator beamlines and plasma research: Handles dynamic gas loads during pulsed plasma operation while maintaining base pressure integrity.
• Vacuum leak detection (helium mass spec mode): High helium compression ratio (>10⁸) improves detection sensitivity below 1×10⁻¹² mbar·L/s.
• R&D laboratories requiring cost-effective, serviceable UHV solutions: Grease-lubricated design extends mean time between maintenance (MTBM) to >12,000 hours under nominal load conditions.

FAQ

What backing pump is required for optimal performance?
A dry, oil-free backing pump with ultimate pressure ≤1×10⁻² mbar and pumping speed ≥1/10th of the molecular pump’s rated speed is recommended (e.g., a 20 m³/h dry scroll pump for the FF-100/150).

Can these pumps be operated vertically or horizontally?
Yes—FF-series models are certified for both orientations; however, F-series (≥250 mm flange) require horizontal mounting unless explicitly specified otherwise in the installation manual.

Is remote start/stop and speed control supported?
Yes—via 0–10 V analog input or Modbus RTU commands over RS-485; full command set includes ramp rate, hold speed, emergency stop, and status polling.

What is the typical pump-down time from atmosphere to 1×10⁻⁶ mbar?
Depends on chamber volume and conductance; for a 100 L chamber with DN100 piping, FF-160/700 achieves this in approximately 22–28 minutes using a 30 m³/h dry backing pump.

Are replacement grease cartridges and rotor assemblies available through authorized channels?
Yes—KYKY-certified service kits, including NSK-branded high-temperature grease cartridges and dynamically balanced rotor assemblies, are distributed globally via KJ GROUP technical support centers.