Aerospace hydraulic, fuel, and fluid-system components contain pressure passages, return channels, cross holes, intersecting passages, inlet and outlet ports, threaded-hole preparation, plug holes, sealing holes, blind holes, stepped holes, sensor ports, and small precision features.
These applications are commonly found in hydraulic manifolds, valve bodies, fuel pump housings, fluid distribution blocks, pressure-control housings, filter housings, connector bodies, regulator components, and other fluid-management parts.
Workpiece materials may include stainless steel, titanium alloys, high-strength alloy steel, nickel-based alloys, aluminum alloys, and other pressure-resistant aerospace materials. Deep internal passages, close passage spacing, high length-to-diameter ratios, sealing requirements, and intersecting channels increase the risk of chip packing, drill deviation, internal burrs, tool wear, and inconsistent hole quality.
Landun CNC Tool supports drill selection and custom carbide drill development based on the component drawing, material grade, hole diameter and depth, passage layout, intersection angle, tolerance, coolant method, burr requirement, and current machining problem.
Hydraulic manifolds, valve bodies, fuel pump housings, and fluid distribution blocks may develop internal burrs where pressure passages, return channels, or cross holes intersect.
When the drill breaks into an existing passage, cutting support decreases suddenly and cutting forces become unbalanced. Excessive feed, unsuitable point geometry, incorrect drilling sequence, or insufficient coolant flow can increase burr formation and leave residual chips inside the component.
Sharp and stable cutting geometry, controlled breakthrough feed, through-tool coolant, and a suitable drilling sequence help reduce internal burrs and improve chip removal. Custom drills can be developed according to the intersection angle, passage diameter, wall thickness, and breakthrough direction.
Long pressure passages, fuel channels, oil-feed holes, return channels, and deep blind holes may experience chip congestion, rising cutting load, poor internal surface quality, drill deviation, or sudden breakage.
As drilling depth increases, chips must travel a longer distance through the flute. Insufficient coolant pressure, unsuitable flute geometry, excessive runout, high material strength, or chips entering another passage can interrupt normal chip evacuation.
Through-tool coolant, suitable flute geometry, stable coolant pressure, rigid toolholding, and controlled drilling parameters help remove chips and reduce cutting heat. Longer passages may require an accurate pilot hole and controlled entry, drilling, breakthrough, and withdrawal.
Fuel-system housings, hydraulic valves, pressure-control parts, and connector bodies manufactured from stainless steel, titanium, high-strength steel, or nickel-based alloys may cause rapid flank wear, cutting-edge chipping, rising spindle load, and unstable tool life.
These materials may create high cutting loads, concentrated heat, material adhesion, and work hardening. Deep-hole machining and insufficient coolant delivery can further accelerate coating wear and edge damage.
Material-specific drill geometry, suitable carbide grades, controlled edge preparation, application-matched coatings, and stable coolant delivery help improve cutting-edge strength and wear resistance. Cutting parameters should be matched to the material grade, drilling depth, machine rigidity, and production target.
Threaded ports, plug holes, sealing holes, stepped fluid connections, valve-related holes, sensor ports, and flat-bottom blind features may show inconsistent depth, shoulder position, concentricity, or bottom geometry.
Drill-point allowance, chips remaining at the bottom of the hole, repeated tool changes, unstable feed, and accumulated positioning errors can affect effective depth and the relationship between connected features.
Flat-bottom, step, chamfer, and combination carbide drills can produce several related features in fewer machining operations. This helps improve depth control, shoulder position, concentricity, sealing-feature preparation, and production efficiency.
Pressure-control components, compact valve parts, sensor interfaces, metering features, and small fluid passages may contain small-diameter holes requiring stable position, diameter, straightness, and surface quality.
Micro carbide drills are highly sensitive to spindle runout, excessive overhang, unstable entry, limited flute capacity, chip congestion, and insufficient coolant delivery. High-strength aerospace materials further increase cutting load and breakage risk.
Low-runout toolholding, short overhang, stable point geometry, rigid workholding, and controlled cutting parameters help improve micro-hole reliability. A spotting operation or internal-coolant solution may be used where entry stability or chip evacuation is critical.
Common drilling applications include pressure passages, return channels, cross holes, threaded ports, plug-hole preparation, valve-related holes, sensor ports, blind holes, and stepped fluid connections.
Typical features include inlet and outlet passages, pressure channels, mounting holes, valve holes, threaded-hole preparation, sensor holes, blind holes, stepped ports, and small precision features.
Common applications include manifold channels, intersecting passages, distribution holes, pressure and return ports, threaded connections, plug holes, locating holes, and repeated fluid-interface features.
Typical drilling applications include inlet and outlet holes, mounting holes, threaded-port preparation, sensor interfaces, small fluid passages, axial holes, radial holes, and sealing-related features.
For mounting holes, locating holes, threaded-hole preparation, short fluid passages, plug-hole preparation, blind holes, and general drilling in hydraulic, fuel, and fluid-system components.
For small pressure passages, valve-related holes, sensor interfaces, metering features, compact fluid channels, vent holes, and other small-diameter precision applications.
For long hydraulic passages, deep fuel channels, extended oil-feed holes, pressure passages, and other high depth-to-diameter drilling applications.
For special channel diameters, angled For intersecting passages, angled entry, stepped ports, flat-bottom blind holes, combined diameters, drilling and chamfering, special lengths, and drawing-based fluid-system features.
| INFORMATION | WHY IT MATTERS |
|---|---|
| Component drawing | Confirms passage layout, hole positions, intersection angles, port structures, wall thickness, tolerances, and special requirements. |
| Workpiece material and condition | Helps determine carbide grade, drill geometry, edge preparation, coating, coolant demand, and cutting parameters. |
| Component dimensions and available wall thickness | Helps evaluate workholding, passage spacing, structural strength, tool access, and breakthrough conditions. |
| Hole diameter, depth, and type | Defines drill size, working length, depth-to-diameter ratio, and blind-, through-, radial-, axial-, step-, or micro-hole requirements. |
| Passage intersections and drilling sequence | Helps assess internal burr risk, breakthrough direction, chip flow, passage alignment, and process planning. |
| Port, sealing, and bottom requirements | Helps determine depth control, shoulder position, bottom geometry, concentricity, and preparation for later finishing. |
| Burr and cleanliness requirements | Helps evaluate cutting geometry, breakthrough parameters, coolant delivery, chip removal, and inspection needs. |
| Machine, holder, fixture, and coolant conditions | Helps assess machine rigidity, spindle runout, component support, coolant pressure, filtration, and deep-hole stability. |
| Current machining problem and production target | Clarifies internal burrs, chip packing, drill deviation, tool wear, breakage, hole variation, tool life, or cycle-time targets. |
Review the component drawing, workpiece material, hole structure, machine conditions, and current drilling problem.
Select a suitable standard drill series or develop a custom drill based on hole depth, tolerance, entry conditions, and machining requirements.
Produce the drill with controlled geometry, edge preparation, coating selection, and multi-stage inspection to support consistent quality.
Support sample testing, specification confirmation, and stable repeat production after the drill solution is approved.
Walter 5-axis grinding supports stable drill-point geometry, flute consistency, diameter accuracy, and shank concentricity.
Controlled edge preparation helps improve cutting-edge consistency, coating adhesion, wear resistance, and tool-life stability.
Coating selection is matched to the workpiece material and drilling conditions to improve wear resistance, heat control, and cutting stability.
HELICHECK PLUS and 150× / 300× visual inspection help verify dimensions, cutting edges, coating appearance, and overall tool condition.
We use cookies to collect information about how you use this site. We use this information to make the website work as well as possible and improve our services.more details
