Forensic Intelligence Report: Core Assembly Vetting
Transfer Engineering and Manufacturing, Inc. (TEAM) PMM-Series Model DBLRM precision magnetically coupled transporter (Lot No. 020831 / Pc. 005). Governed under U.S. Patent 5,105,932, this dual-motion mechanism delivers two independent degrees of freedom (2-DOF): verified 17.50″ (444.5 mm) maximum axial translation combined with full 360° continuous bidirectional rotation. Rotation and linear transit can be actuated independently or synchronously without mechanical interference.
Clarified technical architecture: The dual rear-mounted BNC receptacles function as external position limit and safety interlock switches at the atmospheric boundary (not through-shaft in-vacuum electrical feedthroughs). Sealed internal micro-contact switches engage at the travel extremes, providing direct dry-contact status to facility PLCs, safety gates, or isolation gate valve interlocks to confirm when the carriage is fully retracted prior to gate closure.
Engineered with a solid, high-rigidity AISI 304 stainless steel transfer rod optimized for zero-deflection mechanical sample handoff. Because electrical wiring does not pass through the vacuum core, the solid drive shaft eliminates internal air-trapping channels, virtual leaks, and cantilever droop across the full 17.50″ stroke length, ensuring pinpoint alignment with internal chamber transfer cradles.
High-coercivity rare-earth permanent neodymium magnet arrays transmit axial thrust and rotational torque through a seamless 304L stainless steel tubular pressure boundary. This design eliminates dynamic sliding elastomer seals and thin-walled edge-welded bellows, precluding cycle fatigue and catastrophic vacuum failure. Includes a clamp-on CNC-machined aluminum split-collar stop block along the external guide tube to calibrate forward stroke and prevent collisions with sensitive chamber instrumentation.
Forensic Technical Specification Brochure
| Forensic Specification Parameter | Verified Component Metric |
|---|---|
| Manufacturer (OEM) | Transfer Engineering and Manufacturing, Inc. (TEAM / Fremont, CA, USA) |
| Product Family | PMM Series (Precision Magnetically Coupled Manipulators) |
| Model Series Lineage | DBLRM / DBLRP Series (Dual-Motion Linear & Rotary / U.S. Pat. 5,105,932) |
| OEM Tracking Provenance | Factory Lot No. 020831 / Piece No. 005 |
| Component Classification | Magnetically Coupled UHV Linear-Rotary Transporter w/ Limit Interlocks |
| Degrees of Freedom (2-DOF) | Linear Axial Translation AND 360° Continuous Bidirectional Rotation |
| Maximum Linear Travel | 17.50 Inches (444.5 mm) Verified Mechanical Stroke |
| Rotary Actuation | 360° Continuous Bidirectional Rotation (Simultaneous or Independent) |
| Electrical Interface Style | Two (2x) External Coaxial BNC Receptacles |
| Electrical Circuit Function | Dual Position Limit & Safety Interlock Switches (Atmospheric Boundary) |
| Drive Shaft Construction | Solid High-Rigidity 304 Stainless Steel Shaft (Zero-Deflection Transfer) |
| Body Tube Construction | Seamless AISI 304 / 304L Stainless Steel Tubular Pressure Boundary |
| External Carriage Structure | Precision CNC Black Anodized Aluminum Housing w/ Rare-Earth Magnets |
| Mechanical Travel Limiter | Clamp-On CNC Aluminum Split-Collar Travel Limiter Included |
| Mounting Flange Standard | Standard ConFlat Flange Interface (Factory Knife-Edge Sealing) |
| Operational Vacuum Floor | High Vacuum down to ≤ 1 × 10-10 Torr (Extreme UHV) |
| Helium Leak Rate Standard | Certified Leak-Free Performance (≤ 1 × 10-10 atm-cc/sec) |
| Operational Temperature | -20 °C to +80 °C (Fully assembled with magnets and switches) |
| Maximum Bakeout Envelope | Up to 250 °C (482 °F) with external magnetic carriage and BNC bracket removed |
| Condition Designation | AUDITED USED (Audited Mechanical & Electrical Utility / Excellent Operating Condition) |
⚙️ Operational Directives & Integration Protocol
Thermal Management Advisory: Operating temperature limit is 80 °C fully assembled. For system bakeouts up to 250 °C, the external black magnetic carriage and the rear BNC limit switch bracket MUST be demounted from the tube assembly. Exposing the carriage to bakeout temperatures above 150 °C induces permanent thermal demagnetization of the rare-earth magnets and destroys the internal micro-switches.
Kinematic Verification: Confirm smooth, unbinding axial travel and 360° rotational freedom prior to chamber pumpdown.
Hardware Status Matrix
TOP RATED PROTECTION: This forensic audit asset qualifies for our Free 30-Day Domestic Returns policy. Per eBay Seller Protection policy for Top Rated Plus members, any item returned in a condition altered from shipment—including demagnetized driver carriages, bent drive rods, stripped stop collars, damaged BNC switch ports, or gasket impressions on the ConFlat knife-edge—will result in an automatic, mandatory 50% refund deduction to account for total loss of technical utility and resale value.