150 kV Rotating Anode X-Ray Tube Assembly
LQ16-XD57-20.50/150 for Diagnostic Radiography
The LQ16-XD57-20.50/150 is a rotating anode X-ray tube assembly specified for general diagnostic X-ray procedures. It has a maximum radiographic tube voltage of 150 kV, maximum fluoroscopic tube voltage of 125 kV, and 0.6 / 1.2 mm nominal focal spots. At 50 Hz, nominal 0.1-second anode input power is 20 / 50 kW (small / large focus).
The tube assembly uses a 73 mm rhenium-tungsten-faced molybdenum target with a 12° target angle and high-voltage cable receptacles specified to IEC 60526 interface requirements. It is an assembled, housed X-ray tube product, not an un-housed insert sold as a separate component.
Key Features
- 150 kV diagnostic radiography rating: maximum nominal radiographic tube voltage is 150 kV; the manufacturer also lists a maximum fluoroscopic voltage of 125 kV.
- Dual focal spots: 0.6 mm small focus and 1.2 mm large focus, with rated input power dependent on operating frequency.
- Rotating anode target: 73 mm diameter, 12° angle, rhenium-tungsten-faced molybdenum construction.
- Thermal ratings: 212 kJ (300 kHU) anode heat content and 1000 kJ (1410 kHU) complete assembly heat content.
- Connection and cooling: IEC 60526-type high-voltage receptacles; natural or forced-air cooling as specified for the installation.
- Reference comparison: this technical configuration may be evaluated for systems associated with Canon E7876X or Varex RAD-12 designations, but direct replacement compatibility is not established by the XD57 datasheet alone.
Electrical and Radiographic Specifications
| Manufacturer model | LQ16-XD57-20.50/150 |
|---|---|
| Product type | Rotating Anode X-Ray Tube Assembly |
| Application | General diagnostic X-ray procedures |
| Generator and circuit | Constant-potential high-voltage generator; center-grounded |
| Maximum radiographic voltage | 150 kV |
| Maximum fluoroscopic voltage | 125 kV |
| Minimum tube voltage | 40 kV |
| Small / large focal spot | 0.6 mm / 1.2 mm |
| 0.1 s nominal input at 50 Hz | 20 kW (small) / 50 kW (large) |
| 0.1 s nominal input at 60 Hz | 22 kW (small) / 54 kW (large) |
| Anode rotation speed | Approx. 2800 rpm at 50 Hz / 3200 rpm at 60 Hz |
| Maximum filament current | 5.3 A for each focal spot |
| Filament frequency range | 0–25 kHz |
Rotating Anode, Housing and Thermal Ratings
| Target material | Rhenium-tungsten-faced molybdenum |
|---|---|
| Target diameter / angle | 73 mm / 12° |
| Anode heat content | 212 kJ (300 kHU) |
| Maximum anode heat dissipation | 750 W (1056 HU/s) |
| Continuous anode input power | 145 W (200 HU/s) |
| Complete tube assembly heat content | 1000 kJ (1410 kHU) |
| Nominal continuous input without air circulator | 275 W |
| Nominal continuous input with air circulator | 450 W |
| High-voltage receptacles | IEC 60526-type interface |
| Cooling method | Natural or forced-air cooling |
| Inherent / additional filtration | 1.0 mm Al / 1.5 mm Al (3 × 0.5 mm Al) |
Different thermal figures: anode heat content is 300 kHU; the complete X-ray tube assembly heat content is 1410 kHU. They must not be used interchangeably.
Dimensions, Stator and Operating Conditions
| Overall length / maximum diameter | 480 mm / 152.4 mm |
|---|---|
| Assembly weight | Approximately 17 kg |
| Housing operating temperature range | 16–75°C (housing; not ambient air) |
| Stator start / run voltage | 160 V / 60 V |
| Stator main / auxiliary impedance | 20 Ω / 50 Ω |
| Stator capacitor | 43 µF at 50 Hz / 30 µF at 60 Hz |
| Ambient temperature (normal use) | 10–40°C |
| Relative humidity (normal use) | ≤75% |
| Atmospheric pressure (normal use) | 70–106 kPa |
E7876X / RAD-12 Reference and Replacement Review
The product is identified in the supplied specification as LQ16-XD57-20.50/150. Canon E7876X and Varex RAD-12 are referenced on this page for equipment research and technical comparison. The supplied XD57 specification does not establish that this assembly is a direct or universally compatible replacement for either reference.
Matching voltage and focal spot ratings alone are not sufficient to establish a safe or functional replacement. Before quotation, replacement suitability must be reviewed against the existing equipment documentation by a qualified X-ray service professional.
- Existing X-ray tube model, complete housing model and X-ray system manufacturer.
- Generator maximum voltage, exposure ratings, loading and protection functions.
- Target angle, focal spots, heat-loading and cooling requirements.
- Overall dimensions, mounting points, beam port orientation and required clearances.
- High-voltage cable receptacles, grounding, stator wiring and thermal switch integration.
- Clear photos of the existing assembly and its identification label.
Reference only: inclusion of Canon E7876X or Varex RAD-12 names is for identification and comparison. It is not a statement of OEM origin, authorization, certification or guaranteed compatibility.
Typical Applications
- General diagnostic radiography systems requiring a matching 150 kV rotating-anode assembly specification.
- Fixed radiography installations and diagnostic imaging rooms, when interface and power ratings are confirmed.
- Technical replacement evaluations for existing X-ray equipment, subject to professional system-level review.
Before installation, use the current manufacturer drawings and system-specific service instructions. The XD57 specification includes load-characteristic curves, thermal performance curves, outline dimensions and stator wiring diagrams; these should be reviewed alongside the existing equipment documentation.
Installation and Safety Notes
Manufacturer instructions limit normal ambient operation to 10–40°C, ≤75% relative humidity and 70–106 kPa. Installation and service must be performed by appropriately trained personnel, with appropriate grounding, high-voltage isolation, cooling and radiation protection.
The specification calls for generator overload protection and warns against over-rating the tube. It also states that intervals between two exposures should be greater than 40 seconds under its cited conditions. These are manufacturer cautions, not a substitute for professional installation instructions.
Information Required Before Quotation
- Existing equipment: tube and X-ray system model numbers, identification label and installation photos.
- Technical requirements: generator, stator, HV connection, cooling configuration and available mounting dimensions.
- Procurement: quantity, delivery country and any required documentation.
UMY Medical can review the supplied identification details against the XD57 specification and clarify what remains to be verified before offering a configuration for quotation. Final system compatibility should be assessed by qualified personnel.
Related X-Ray Tube Reference
For a different rated configuration, see LQ16-XD51-20.40/125 rotating anode X-ray tube assembly. The XD51 specifies 125 kV, 1.0/2.0 mm focal spots and 150 kHU anode heat capacity. It is not presented as interchangeable with the XD57.
You can also review UMY Medical X-ray equipment for related diagnostic radiography systems.
Frequently Asked Questions
Is LQ16-XD57-20.50/150 a genuine Canon E7876X or Varex RAD-12 assembly?
No such claim is made. LQ16-XD57-20.50/150 is the model in the supplied manufacturer specification. Canon E7876X and Varex RAD-12 are comparison references; direct replacement compatibility requires separate technical review.
What are the rated focal spots and input powers?
The focal spots are 0.6 mm (small) and 1.2 mm (large). At 50 Hz, nominal 0.1-second input powers are 20 kW and 50 kW; at 60 Hz, they are 22 kW and 54 kW.
Is the heat capacity 300 kHU or 1410 kHU?
Both values refer to different parts of the thermal system: 300 kHU is the anode heat content, while 1410 kHU is the heat content of the complete housed tube assembly.
What must be confirmed before a replacement quotation?
Provide the original tube and equipment models, label and mounting photos, generator specifications, connector and stator details, cooling requirements, quantity and destination country. A qualified technical review is required before a replacement can be recommended.
Request an LQ16-XD57 X-Ray Tube Quotation
Send your existing tube and X-ray system models, clear photos, generator information, required quantity and destination country. UMY Medical can review the XD57 specification and confirm the next steps for technical assessment.
