Industry case format
Industrial Machinery Casting Cases
Industrial machinery buyers usually want fewer surprises. A casting can be hidden inside a machine, but if the bearing seat, mounting face, hole position, or flatness is wrong, the assembly still stops.
Customer names, drawings, and commercial details are not shown. The case format below is written to show the engineering review points a buyer can compare with their own drawing.
Representative Project Profile
Part name
Gearbox housing / reducer housing / ductile iron bracket / machine base
Material
Gray iron, ductile iron, cast steel, stainless steel, or aluminum alloy according to load, weight, and working environment
Process
Sand casting for housings and heavy brackets; gravity casting or die casting may be reviewed for aluminum equipment parts
Machining
Bearing seats, datum faces, mounting surfaces, bolt holes, slots, threaded holes, and assembly contact faces
Inspection
CMM for datum and hole position, bore inspection, flatness check, thread gauges, visual inspection, and packing review for machined surfaces
Buyer concern
Deformation after machining, bearing seat alignment, hole position, flatness, stress release, machining allowance, and damage during transport
Buyer Pain Points Behind This Type of Part
A heavy casting can still fail on small details
Bearing seats, threaded holes, and flat faces are often more important than casting weight.
Machining should not be treated as an afterthought
The casting route and CNC sequence need to be discussed together, especially on housings and brackets.
What We Reviewed Before Quotation
- Which surfaces should be used as machining datums and which surfaces are only raw casting areas.
- Whether the housing or bracket has uneven wall thickness that may move during machining.
- How bearing seats, bolt holes, slots, and threaded holes should be inspected.
- Whether the buyer needs raw castings, machined castings, or assembly-ready finished parts.
What to Send for a Similar RFQ
- 2D drawing and 3D model if available, including tolerances for machined areas.
- Material grade, working condition, expected quantity, and whether samples are required first.
- Machining notes for holes, threads, bearing seats, sealing faces, datums, or visible surfaces.
- Inspection documents required by the buyer, such as material report, CMM report, pressure/leakage test, or surface finish notes.
Related Case Notes
If your part has similar concerns, send the drawing first. We will review the casting route, machining areas, inspection needs, and RFQ information before quoting.