Long internal features
Deep drilling is relevant when the bore length, aspect ratio, or straightness requirement makes ordinary drilling unsuitable.
Capability
Deep hole drilling as a dedicated technology
Deep hole drilling uses Sandvik technology for parts where a normal drilling operation is not enough. The important questions are bore depth, diameter, straightness, material condition, setup access, and how the drilled feature connects to turning, milling, grinding, or assembly later.
- Supports heavy workpieces that need long internal bores, oil passages, cooling channels, or precision through-holes
- Can be planned with turning and other machining operations so datum points and final geometry stay consistent
- Useful when bore alignment, entry and exit condition, surface finish, and tolerance need early review
- Best requested with drawing, bore depth, diameter, material, tolerance, surface finish, and inspection requirements
Project fit
When deep hole drilling should be separated from general machining
Heavy-part setup
Workpiece weight, clamping access, centerline reference, and handling constraints must be checked before the route is accepted.
Material behaviour
Steel grade, hardness, weld repair, heat treatment state, and previous machining can affect tool choice and process risk.
Downstream fit
The drilled feature often supports later turning, milling, assembly, lubrication, cooling, or hydraulic function, so it cannot be planned alone.
Process route
From bore requirement to verified feature
Confirm geometry
Review bore diameter, depth, entry face, exit condition, concentricity, straightness, and tolerance requirements.
Plan setup
Define support points, clamping, datum references, part orientation, tool access, and handling limits before drilling starts.
Drill and control
Use the selected deep drilling route while monitoring chip evacuation, coolant flow, tool behaviour, and bore quality risk.
Verify result
Check the feature against the drawing or agreed acceptance criteria before the part moves to the next operation.
Inquiry data
What helps BRUVAL evaluate a deep hole drilling request
- Drawing, sketch, or photos showing bore position, entry face, exit face, and part orientation
- Bore diameter, depth, tolerance, straightness, concentricity, surface finish, and quantity
- Overall workpiece dimensions, approximate weight, material grade, hardness, and heat-treatment condition
- Whether the hole is blind, through, stepped, intersecting, angled, or connected to another feature
- Operations before and after drilling: turning, milling, welding, heat treatment, grinding, assembly, or pressure testing
- Inspection requirements, target delivery date, shutdown window, and any customer acceptance standard
Related operations
Machining around the drilled feature
Project request
Send deep hole drilling requirements.
BRUVAL can review the requirement, confirm the suitable product or service route, and return the next technical step.