MACHINE SHOP CAPABILITY IN YOUR ENGINE ROOM
Damaged surfaces, broken studs, stripped threads, and failed component geometry on engine bedplates, manifolds, and structural elements usually mean transport to an onshore machine shop. That adds days of delay and heavy crane and haulage costs.
OSM International's portable milling and drilling systems bring that machine shop capability to the worksite. Our magnetic-base and mechanically-clamped units mill flat surfaces to ±0.05mm flatness, drill and tap threads to standard specifications, and extract broken studs without damaging the parent material.
A single broken stud or a full bedplate resurfacing: we mobilize fast across the Americas and Caribbean, cut vessel off-hire, and keep your equipment in service.
Applications
- Engine bedplate and sole plate milling
- Manifold face and port machining
- Damaged thread repair by insert or re-tapping
- Broken stud extraction, M6 to M100
- Keyway cutting and broaching
- Structural weld preparation milling
- Flat surface preparation for gasket surfaces
- Precision drilling for dowel and stud installation
Technical Specification
Milling width
up to 1,200mm
Flatness tolerance
±0.05mm / 300mm
Drilling diameter
3-200mm
Tapping range
M3-M100
Stud extraction
M6-M100
Magnetic hold force
up to 1,200kg
HOW WE WORK
4-STEP PROCESS
01
Survey & Planning
Assessment of surface condition and required material removal. Identification of tooling, fixturing, and access requirements. Confirmation of target dimensions and finish requirements.
02
Machine Fixturing
Magnetic-base or mechanical clamping of portable milling or drilling unit. Alignment to target surface or bore centerline. Setting of cutting depth and feed parameters.
03
Machining Operations
Face milling, end milling, drilling, tapping, or reaming as required. Multi-pass operations for heavy material removal. Continuous measurement and adjustment to target dimensions.
04
Inspection & Documentation
Final surface flatness, hole diameter, and thread engagement verification. Photographic documentation. Certified inspection report for classification society or P&I club submission.
PROJECT GALLERY
WORK PHOTOGRAPHY
Related Services
COMMON QUESTIONS
MILLING & DRILLING: ANSWERED
What is portable onsite milling?
Portable onsite milling uses magnetic-base or mechanically-clamped milling units that attach directly to the work surface (an engine bedplate, manifold face, or structural flange) and machine it flat or to a specific profile without removing the component. OSM International's systems hold flatness tolerances of ±0.05mm per 300mm and cover milling widths up to 1,200mm.
How are broken studs extracted without damaging the parent material?
OSM International combines EDM (electrical discharge machining), precision stud extractors, and controlled drilling to remove broken studs from M6 to M100. Where the thread itself is damaged, we re-tap or install thread inserts (Helicoil or similar) to restore full thread engagement and load capacity. The surrounding material stays untouched.
What thread sizes can be tapped onsite?
Our portable tapping equipment covers metric threads from M3 to M100 and imperial threads from 1/8" through 4" UNC/UNF in all standard metallic materials including carbon steel, stainless steel, duplex, Inconel, and aluminum. Blind holes, through holes, and damaged thread repair are all within scope.
Can you work on stainless steel and exotic alloys?
Yes. Our tooling inventory includes coatings and geometries optimized for stainless steel, duplex, Inconel, titanium, copper-nickel, and other exotic alloys common in marine and offshore environments. Cutting parameters are adjusted for each material to maintain dimensional accuracy and the required surface finish.
How long does an onsite milling, drilling, or stud-extraction job take?
Most milling, drilling, tapping, and stud-extraction jobs are completed in hours to a couple of days, depending on scope and access. We mobilize within 24 to 48 hours so the component is returned to service without removal or shop transport.
GET STARTED
REQUEST MILLING & DRILLING
Describe the component, surface dimensions, and current damage condition. We respond within 2 hours with a scope and timeline.
24/7 EMERGENCY LINE
REQUEST SERVICE
We respond within 2 hours. Emergency? Call +1.800.903.1509