What This Part Is And Why It Is Made This Way
Pump manufacturers need rotors in series, matched to stators that are themselves produced in batches. Dimensional drift between rotor batches shows up immediately as inconsistent pump performance at the test bench.
Volume rotor production runs on a fixed process route with machining, dimensional inspection and hardness testing applied to each batch.
What You Get From This Route
Fixed process route keeps profile and hardness stable across batches.
Hardness and dimensional checks applied per batch rather than on first article only.
Batch packing suited to rotor length and finish.
Application Scenarios
- Series pump assembly lines
- OEM rotor supply programmes
- Aftermarket rotor stock
- Multi model rotor families
Who It Is For
- Pump OEMs with assembly lines
- Aftermarket suppliers holding rotor stock
- Buyers consolidating several rotor sizes with one supplier
Technical Features
- Series production with fixed process route
- Per batch hardness and dimensional inspection
- Shell moulding with grinding, machining, quenching and polishing
- Packing matched to rotor length and finish
What Buyers Run Into Without This Specification
- Rotor batches differ and pump test results scatter.
- Polished surfaces are marked in transit.
- Several rotor sizes come from several suppliers with different quality levels.
Published Material Weight And Process Data
Figures below are the published capability for high alloy parts. Part specific values — tolerance on individual features, finish, packing — are confirmed at drawing review and marked TBC until then.
| Food Machinery Material | 1.4308 / 1.4309 / 1.4340 |
|---|---|
| Food Machinery Weight | 9 kg - 800 kg |
| Grate Bar Material | 1.4777 / 1.4776 / 1.4823 / 1.4743 / LH26 / EN-GJL-200 + 3%Cr |
| Grate Bar Weight | Typical products 2 kg - 50 kg; some grate bars and liners around 10 kg - 50 kg |
| Biomass Material | 1.4777 / 1.4776 / 1.4823 / 1.4855 |
| Working Temperature | Typical maximum around 1050 °C - 1150 °C depending on material and duty |
| Process | Shell moulding, lost wax and lost foam casting, plus CNC machining |
| Tolerance | Shell moulding normally CT9-10; lost wax normally CT8; surface roughness about Ra 12.5 |
| 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
- Inspection — Dimensions, flatness, assembly clearance, 3D scanning, RT, PT, hardness, chemical composition and tensile testing.
- Material Control — Chemical analysis on each melt, sampling from the product body and third party testing for special elements.
- Heat Treatment — Rotors are annealed to 20-35 HRC before machining, then quenched at about 1020 °C to 59-63 HRC.
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
Group rotor sizes into one supply programme where possible. A single partner running the same route across a rotor family gives more consistent bench results than splitting sizes across suppliers on price.
- 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.
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View specificationsVolume Rotor Production — Frequently Asked Questions
Can you supply several rotor sizes under one programme?
Yes. Rotor series and drawing customised rotors can be produced on the same route, which keeps the process consistent across sizes.
Is hardness checked on every batch?
Hardness and quality testing are standard inspection items for rotor products, together with dimensional checks.
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. Rotors are annealed to 20-35 HRC before machining, then quenched at about 1020 °C to 59-63 HRC.
Get A Quotation For Volume Rotor Production
Send the drawing and the application. We will confirm the process route, the production base and the inspection scope before quoting.