JTFB Series Turbo-Molecular Vacuum Pumps by KJ GROUP
| Brand | KJ GROUP (Shenyang Kejing) |
|---|---|
| Origin | Liaoning, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | JTFB Series |
| Pricing | Available Upon Request |
Overview
The JTFB Series turbo-molecular vacuum pumps are high-performance, oil-free vacuum generation systems engineered for demanding ultra-high vacuum (UHV) and high-vacuum (HV) applications. Based on the principle of momentum transfer—where high-speed rotating blades impart kinetic energy to gas molecules to direct them toward the exhaust port—the JTFB series achieves continuous, stable pumping across a wide pressure range (typically 10⁻¹⁰ to 10⁻² mbar). These pumps operate in tandem with backing pumps (e.g., dry scroll or diaphragm pumps) to maintain base pressures suitable for surface science, thin-film deposition, electron microscopy, and space-simulation environments. Designed for integration into complex vacuum systems, the JTFB series features compact rotor-stator architecture, low vibration output, and rapid pump-down characteristics—critical for semiconductor fabrication tools, photovoltaic coating lines, and aerospace component testing chambers.
Key Features
- Modular design supporting multiple configurations: composite-type (combined magnetic bearing + mechanical bearing), air-cooled variants for simplified thermal management, grease-lubricated models for extended maintenance intervals, and shock-resistant versions qualified for mobile or vibration-prone installations.
- High rotational speed operation (up to 90,000 rpm) with precision-balanced titanium or aluminum alloy rotors ensuring long-term dynamic stability and minimal bearing wear.
- Integrated controller with RS-485/Modbus RTU communication interface for remote monitoring of rotational speed, bearing temperature, motor current, and fault diagnostics.
- Compliance with IEC 61800-3 for electromagnetic compatibility (EMC) and IEC 60034-1 for electric motor safety standards.
- Optional integrated vacuum gauge input (Pirani or capacitance manometer) enabling closed-loop pressure regulation via analog or digital setpoint control.
Sample Compatibility & Compliance
The JTFB series is compatible with inert, non-corrosive, and mildly reactive gases (e.g., N₂, Ar, O₂, H₂, He) commonly encountered in physical vapor deposition (PVD), chemical vapor deposition (CVD), and analytical instrumentation. It is not intended for condensable vapors (e.g., solvents, oils) or highly corrosive process gases (e.g., ClF₃, HF) without dedicated gas-handling accessories. All units meet GB/T 19001–2016 (equivalent to ISO 9001:2015) quality management system requirements. For regulated environments—including GLP-compliant material characterization labs and ISO 14644-classified cleanrooms—the pump’s firmware supports audit-trail-capable operation logs when paired with compliant supervisory software.
Software & Data Management
KJ GROUP provides the optional “VacuLink Control Suite” (v3.2+), a Windows-based application supporting real-time parameter visualization, multi-pump synchronization, and event-triggered data export in CSV or XML format. The software complies with FDA 21 CFR Part 11 requirements when configured with electronic signatures, role-based access control, and immutable audit trails. Historical operational data—including cumulative runtime, thermal cycling history, and over-speed events—is stored onboard the pump controller (non-volatile memory) and retrievable via USB or Ethernet for predictive maintenance planning per ISO 13374 standards.
Applications
- Semiconductor manufacturing: Load-lock evacuation, ion implantation chamber pumping, and etch process support.
- Photovoltaics: In-line vacuum pumping for sputtering and evaporation of anti-reflective and transparent conductive oxide (TCO) layers.
- Aerospace & defense: Thermal vacuum testing of satellite subsystems and propulsion components under simulated space conditions.
- Research infrastructure: UHV systems for synchrotron beamlines, scanning tunneling microscopes (STM), and residual gas analyzers (RGA).
- Automotive R&D: Vacuum-assisted brake booster testing, EV battery cell drying, and laser welding chamber evacuation.
FAQ
What backing pump is required for the JTFB series?
A dry backing pump with a minimum ultimate pressure of ≤1 × 10⁻² mbar and pumping speed ≥10 m³/h is recommended—commonly a scroll or diaphragm type meeting ISO 8573-1 Class 0 oil-free air purity standards.
Can the JTFB pump be operated vertically or horizontally?
Yes—mechanical-bearing variants support both orientations; magnetic-bearing models require horizontal mounting per manufacturer specification to ensure rotor stability.
Is helium leak testing supported out-of-the-box?
Helium-compatible operation is inherent due to molecular flow regime performance; however, quantitative leak detection requires integration with a dedicated helium mass spectrometer and calibrated leak standard.
What is the typical mean time between failures (MTBF) under continuous operation?
Based on field data from industrial installations, MTBF exceeds 15,000 hours for grease-lubricated models and 25,000 hours for magnetic-bearing variants operating within specified ambient temperature (15–35 °C) and vibration limits.
Does KJ GROUP provide calibration certificates traceable to NIST or CNAS?
Yes—factory calibration reports include rotational speed verification, ultimate pressure validation, and throughput measurement, all traceable to CNAS-accredited reference standards (Certificate No. CNAS LXXXXX). NIST-traceable calibration is available upon request with additional lead time.
