Grey-Iron Sand-Cast Bearing Housings and Shaft Brackets — GG250/300 References, CNC Bores and Custom Machinery Parts
Direct factory support
Get a quote that fits your project
Send your drawing or product reference, material grade and required quantity. Relia will review the requirements with you.
- Drawing & specification review
Confirm the supply scope and critical requirements.
- Samples before custom production
Review inspected samples before approving a batch.
- Inspection documents
Agree material and dimensional records for your part.
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Surface TreatmentSandblasting, painting, powder coating, phosphatin
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MaterialsHT 250 300 QT 400 500-6 600-5 700MaterialIron
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Surface treatmentCustomers' DemandApplicationIndustry
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ProcessCasting +Machining(if Need)+surface TreatmentServiceOEM ODM Customised
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Machining ProcessCNC Finishing ProcessQuality Control100% Inspection
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Tolerance0.01-0.05mmPackingCustomized Packing
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Drawing Format2D/(PDF/CAD)3D(IGES/STEP)
Bearing housings and shaft-mounting brackets should be specified through the bore and mounting geometry required by the machine. This OEM/ODM enquiry names grey-iron sand casting with CNC-machined bores. Dimensions and finishing follow the actual component requirements.
Define bore geometry and shaft interfaces
Provide the housing or bracket drawing with the bearing locations and mounting dimensions. Identify the reference datums and finished limits that establish the assembly. The tolerance reference is 0.01–0.05 mm, with the controlled dimensions and numerical convention to be defined for the order.
- Supply 2D PDF/CAD or 3D IGES/STEP data.
- Select the full material grade and applicable standard.
- Mark bore, shaft and mounting-interface acceptance.
- Specify the required finish and inspection records.
Select the complete iron designation
Grade enquiries use GG250/300, HT250/300 and QT400/500-6/600-5/700 references. Identify the exact designation and governing specification for the selected part rather than assuming equivalence between labels. Keep the chosen material and required condition consistent with the drawing.
Choose the surface condition and packing
Sandblasting, painting, powder coating and phosphating are named finishes. Select the treatment for the component and identify fitted or measured areas needing particular instructions. Customized packing can be specified around the actual part.
Agree 100% inspection for the component
The service states 100% inspection. Identify the dimensional and surface checks needed for the housing or bracket, together with the required records. Material, bore geometry and finished acceptance should establish the order without an assumed bearing-fit class or load rating.
