What This Part Is And Why It Is Made This Way
Disc components ordered in series are judged on consistency, not on the best part in the box. The question is whether part number 500 measures the same as part number one.
These parts are cast or forged, machined in batch production and inspected against a sampling plan agreed before the first delivery.
What You Get From This Route
Series production on a stable base rather than a different supplier each order.
Sampling plan and acceptance criteria agreed before production starts.
Packing suited to batch handling, which reduces transit damage on machined faces.
Application Scenarios
- Repeat spare part programmes
- Series machine assembly components
- Distributor stock items
- Aftermarket replacement discs
Who It Is For
- Buyers running annual call off contracts
- Distributors holding stock of repeat items
- Assembly plants with fixed takt requirements
Technical Features
- Series production of repeat parts
- Machining coordinated with casting or forging
- Agreed sampling and acceptance plan
- Packing matched to the part and the route
What Buyers Run Into Without This Specification
- Quality drifts after the approved first article.
- Machined faces are damaged in transit because packing was an afterthought.
- No sampling plan exists, so incoming inspection is a negotiation every time.
Published Material Weight And Process Data
Figures below are the published capability for steel castings and forgings. Part specific values — tolerance on individual features, finish, packing — are confirmed at drawing review and marked TBC until then.
| Material | 42CrMo4, G20Mn5, G26CrMo4, G18NiMoCr3-6, G22CrNi2Mo5-6, AISI 4340, AISI 4140, AISI 4325 and similar grades |
|---|---|
| Weight Range | Steel casting 50 kg - 20 T; forging 50 kg - 50 T |
| Process | Sand casting; shell moulding; open-die and closed-die forging; roll forging |
| Melting | High automation production lines with EAF + LF + VD / AOD melting routes |
| Tolerance | Zero draft sand casting to CT9 on automated heat treatment lines |
| Inspection | NDT with certified operators, single part certificates and quality document traceability |
| Part Specific Tolerance | TBC — confirmed against the customer drawing |
| Minimum Order Quantity | TBC — depends on the process route selected |
| Lead Time | TBC — confirmed with the production base at quotation |
How The Part Is Made And Checked
- Production — Highly automated production lines with EAF + LF + VD / AOD melting equipment.
- Quality — Certified NDT capability, supporting per-part certificates and traceable quality documents.
- Process Control — Automated heat treatment lines; zero draft sand casting reaches CT9.
Quality management is based on ISO 9001 and covers supplier management, raw material inspection, production process control and final inspection. Inspection results are archived and traceable.
Options And Alternatives
Parts are produced to the customer drawing rather than to a fixed catalogue item, so material grade, machining scope, surface treatment and packing are all specified per order. Machining, dimensional control, surface treatment and necessary pre-assembly can be added to the same supply route.
Where another process family would suit the part better — for example a forging in place of a casting for a shock loaded connector — that comparison is raised during drawing review rather than after tooling is committed.
How To Specify This Part
Agree the sampling plan and the packing specification at the quotation stage, not at the first shipment. For repeat parts these two documents prevent more disputes than any tightening of the drawing tolerance.
- Send the drawing with material, quantity, quality standard and target delivery date.
- State the inspection class and the zones it applies to, rather than a general note.
- Confirm the packing requirement and the lifting equipment available at the destination.
Related Guides
Other Parts In This Range
Large Steel Structural Castings
Load bearing steel castings up to 20 tonnes
View specifications
Slewing Support Structural Castings
Rotating support bodies with machined bearing seats
View specifications
Forged Shafts
Stepped shafts with continuous grain flow
View specifications
Flanges and Sleeve Components
Connection flanges and sleeve bodies
View specificationsBatch Machined Disc Components — Frequently Asked Questions
Can you hold stock for call off orders?
Stock and call off arrangements are handled case by case as part of the project terms. Please raise the expected annual quantity and call off pattern on the enquiry.
How is consistency controlled between batches?
The part stays with the same qualified production partner, key processes are standardised and inspection results are archived so batches can be compared.
What do you need to prepare a quotation?
Drawings, material, quantity, quality standard and target delivery date.
Which inspection is included?
The inspection scope is agreed during drawing review. Automated heat treatment lines; zero draft sand casting reaches CT9.
Get A Quotation For Batch Machined Disc Components
Send the drawing and the application. We will confirm the process route, the production base and the inspection scope before quoting.