The HBJ11 is a new intraoral dental X-ray tube: a compact stationary anode glass X-ray tube insert rated for 50–70kV tube voltage and 2–12mA tube current, with a 0.4mm focal spot. It is the X-ray generating component fitted inside the tube head of an intraoral dental radiography unit, and is supplied as a replacement insert for service engineers, repair workshops and equipment builders.
Key Benefits of This Dental X-Ray Tube Insert
- Fine 0.4mm focal spot a small focus supports sharp, detailed periapical and bitewing images.
- 50–70kV operating range covers the tube voltages used for intraoral dental radiography.
- 2–12mA tube current suits common intraoral generator settings.
- Compact and lightweight about 95g with a Ø30mm glass envelope, sized for small tube-head housings.
- Simple mounting anode stem with an M4 threaded hole for fixing and heat conduction.
Features of the 70kV Intraoral X-Ray Tube
- Stationary (fixed) anode design with a 12° target angle
- Glass envelope construction
- Cathode end with filament pin terminals (marked F1 cathode and F2 filament on the outline drawing)
- Ø12mm anode stem with M4 threaded hole, 8mm deep
- Focal spot positioned 37mm from the anode end face
- Class II instrument classification
- Application: X-ray photography and medical diagnosis
Technical Specifications
| Specification | Value |
|---|---|
| Product type | Intraoral dental X-ray tube insert |
| Model number | HBJ11 |
| Condition | New |
| Anode type | Stationary anode |
| Envelope | Glass |
| Tube voltage | 50–70kV |
| Tube current | 2–12mA |
| Focal spot (tube focus) | 0.4mm |
| Target angle | 12° |
| Envelope diameter | Ø30 ± 1mm |
| Overall length | 67mm max |
| Cathode pin length | 9mm max |
| Focal spot position | 37 ± 0.5mm from anode end face |
| Anode stem diameter | Ø12 ± 0.1mm |
| Anode mounting thread | M4, 8mm deep |
| Weight | 95g |
| Power source | Electricity |
| Instrument classification | Class II |
Use Cases for a 0.4mm Focus Dental X-Ray Tube
- Replacement tube insert when servicing intraoral dental X-ray tube heads
- Repair and refurbishment of wall-mounted, mobile and portable intraoral X-ray units
- Spare part stock for dental equipment service companies and biomedical engineers
- OEM and custom builds of 70kV dental X-ray generators and monoblocks
Installation and Handling Notes
- Check the outline dimensions, focal spot position and filament ratings against your tube head before ordering; this is a bare insert, not a complete tube-head assembly.
- Installation must be carried out by a qualified X-ray service technician, with the tube operated inside a properly shielded, insulated housing.
- Handle the glass envelope with care and keep it clean before fitting.
- Follow the radiation safety and licensing requirements that apply in your region.
Frequently Asked Questions
What is an intraoral dental X-ray tube?
An intraoral dental X-ray tube is the vacuum tube inside a dental X-ray tube head that produces the X-ray beam used for images taken with the film or sensor placed inside the mouth, such as periapical and bitewing radiographs.
What are the ratings of the HBJ11 X-ray tube?
The HBJ11 operates at 50–70kV tube voltage and 2–12mA tube current, and has a 0.4mm focal spot.
What size is this 70kV X-ray tube?
The glass envelope is Ø30mm (±1mm), the overall length is 67mm maximum, the anode stem is Ø12mm with an M4 thread 8mm deep, and the tube weighs about 95g.
Is this a stationary anode or rotating anode tube?
It is a stationary anode tube with a 12° target angle, the type normally used in compact intraoral dental X-ray generators.
Does it include the tube head, housing or high-voltage generator?
No. You receive the glass X-ray tube insert only. The housing, insulating oil, collimator and high-voltage generator are not included.
Why does a 0.4mm focal spot matter?
A smaller focal spot reduces geometric blur, which helps produce sharper detail in dental radiographs.
Related Dental X-Ray Equipment
Complete your imaging setup with our Portable Dental X-Ray Unit 60kV 2mA, the Woodpecker Ai Ray Handheld Dental X-Ray Machine, the HyperLight Portable Dental X-Ray Machine with Wireless RVG Sensor and the Dental X-Ray Sensor Positioner Kit.
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