1.25x12x38.1L JF Solid Carbide PCB Drill Bit Applications
The drill can be used for PCB mounting holes, component openings, fixtures, electronic panels, small plastic parts and precision production work. Its solid carbide construction provides stiffness and wear resistance for repeated drilling, while the 3.175 mm shank matches common PCB drilling and engraving equipment.
Hole quality depends on spindle runout, entry support, workholding, chip evacuation and the condition of the cutting edges. The 1.25x12x38.1L JF Solid Carbide PCB Drill Bit should be checked against the drawing and board stack before production because the flute length is not the same as the recommended drilling depth for every material.
Machine Setup and Drilling Procedure
- Clean the collet and 3.175 mm shank before installation.
- Keep tool projection as short as practical to reduce runout and bending.
- Support the workpiece with a suitable entry and backup material.
- Confirm the programmed coordinates, drilling depth and safe retract height.
- Use effective dust extraction or air flow for fine chips.
- Inspect the first holes for diameter, breakout and wall condition.
In computer numerical control drilling, repeatability comes from accurate coordinates, a stable spindle and consistent board positioning. Sudden lateral movement can break a small carbide drill, so the programmed cycle should enter and retract on the hole axis. Pecking strategy, feed and spindle speed must be selected for the material and machine rather than copied from an unrelated job.
PCB Material and Hole Quality
FR-4 and similar laminates contain abrasive glass reinforcement that can wear cutting edges. Resin smear, fiberglass breakout or enlarged holes may indicate a worn drill, excessive runout or unsuitable parameters. A clean backup board supports the exit surface, while correct stack height helps prevent the flute from becoming overloaded with dust.
For plastics and resin components, heat should be controlled so the hole does not soften or close behind the drill. Compatible thin non-ferrous parts require a rigid setup and appropriate lubrication or air. Always test the process on sample material before machining valuable boards or production assemblies.
JEEFOO Supply from Guangzhou, China
JEEFOO manufactures and supplies carbide PCB drilling and engraving tools from Guangzhou, China, for distributors, electronics workshops and industrial buyers. Dimensional checks and cutting-edge inspection support specification consistency. Buyers can explore related products on the JEEFOO CNC cutting tool website or provide a hole chart, board material and machine details for application review.
Inspection, Storage and Safety
Handle the drill by the shank and protect the cutting point from impact. Store tools separately so carbide edges do not touch each other. Replace the drill if the point is chipped, the hole diameter changes or breakout increases. Stop the spindle completely before tool changes, use eye protection and follow the machine manufacturer’s requirements for guarding, extraction and spindle limits.
1.25x12x38.1L JF Solid Carbide PCB Drill Bit FAQ
What do the dimensions identify?
They identify a 1.25 mm cutting diameter, 12 mm cutting length and 38.1 mm overall length. The shank is 3.175 mm.
Why is spindle runout important?
Runout makes the cutting point orbit instead of rotating concentrically, which can enlarge holes, increase wear and break a small carbide drill.
What information should be supplied for an order?
Provide the hole diameter, board material, stack height, machine type, shank requirement, quantity and expected production conditions.
— wp:heading –>Product Description
This 1.25x12x38.1L JF solid carbide PCB drill bit has a 1.25 mm cutting diameter, 12 mm cutting length, 3.175 mm shank and 38.1 mm overall length. Its precision spiral geometry is made for accurate small-hole production.
Use the XB drill for circuit boards, power boards, fiberglass panels, carbon-fiber board and epoxy laminates where dimensional consistency and a clean hole wall are required.
Recommended Applications
- 1.25 mm PCB holes
- Fiberglass laminate drilling
- Electronic board production
