Large Envelope Machining
One of the largest CNC envelopes on the West Coast, for parts that span 10 to 16 feet and still carry tight tolerances.
When the part won’t fit in a standard shop.
Holding a tight tolerance on a bench part is common. Holding it across a component 16 feet long is not. Large-envelope work is IMT’s defining capability: bridge mills, horizontal boring mills and overhead cranes sized so oversized parts are loaded, fixtured, machined and inspected without leaving the building or subcontracting the rigging.
Every extra setup on a big part is a chance to lose a datum. The travel on our bridge mills lets critical features stay in one setup, and a portable Faro arm verifies parts on the machine when they are too big to carry to the metrology room.
Typical work- Satellite bus panels and primary structure
- Launch vehicle structures and fixtures
- Vacuum chamber bodies for semiconductor tools
- One-off experimental apparatus for national labs
Will your part fit?
Enter a bounding box and see it drawn to scale inside each machine’s travel.
What runs the work.
Machine-by-machine specs, so you can judge fit before you call.
Bridge vertical machining centers
Horizontal boring mills
Horizontal machining center
From the floor
Unstaged photos from the Hayward floor. Select any photo to enlarge it.
Questions engineers ask
What counts as large-envelope machining?
Milling, boring and turning parts that exceed a standard shop’s machines, typically longer than about 80 in in any axis or heavier than a ton. Our largest envelope is 201 × 134 × 42 in with 10-ton crane support.
What is the largest part you can machine?
Roughly 16.75 × 11.2 × 3.5 ft and up to 10 tons on the Viper PRW-5340. For tall work, the Hartford PBM-135B offers 60 in of Z, and the Toshiba BP-130 gives 160 × 94 in of horizontal boring travel.
Can you 5-axis machine large parts?
Yes. We pair the bridge mills with HAAS VF-6/50 and VF-5/50TR 5-axis centers for ports, lids and brackets, and keep critical geometry on a single setup wherever the part allows.
Industries that depend on it.
The same capability, documented to each sector’s requirements.
Space SystemsBus panels, propulsion and reflector structureExplore →
Aerospace & DefenseFlight-critical, ITAR-controlled hardwareExplore →
SemiconductorUHV chambers and fab-tool hardwareExplore →
National Labs & ResearchBeamline, detector and vacuum hardwareExplore →Send the model. Get a quote with DFM notes in 24 hours.
Drawings, specs or even a rough concept are enough to start. Mutual NDA on receipt.