Magnets and components for cooling fans and pumps

Identify the equipment, not just the end market

Data-centre cooling covers different equipment arrangements, including air-moving equipment and liquid-circulation systems. Specify the fan or pump component being sourced, the operating conditions and the drawing revision. The data-centre application does not by itself define the magnetic material, geometry or inspection method.

For a ring, block or segment, provide the required magnetic properties and magnetisation direction. Include the condition at delivery and the surfaces that locate or bond the part. The specification guide provides a starting checklist for preparing a comparable enquiry.

Define component evidence and system tests

Provide the thermal conditions, expected duty and environmental exposure used in the equipment design. For pump components, identify whether the magnet contacts fluid and describe any protective coating or barrier. If material compatibility, cleanliness or corrosion tests are required, state the method and acceptance criteria explicitly.

We agree the inspection records that accompany the proposed part. The equipment manufacturer separately defines tests for the completed fan or pump, including any performance, acoustic or endurance requirements. Site availability, cooling capacity and system redundancy cannot be inferred from the magnet's specification or its inspection report.

Control changes after qualification

Define what approval covers: the drawing revision, material, coating, producer, production location and specified inspection steps. The qualification process can include comparison samples and a documented customer release. Subsequent changes follow the agreed review procedure rather than being treated as automatically equivalent.

Stators, rotor carriers, shafts and housings can be included through motor component kits. The quotation identifies the scope of supply and any assembly work. It also states which records are available from the proposed route and which require additional work.

Plan supply with explicit assumptions

• Provide prototype, qualification and production quantities separately.

• Distinguish forecast demand from firm delivery releases.

• Define packaging, lot identification and record-retention needs.

• Identify approved alternatives and the conditions for substitution.

• State any restrictions on material or processing origin.

A volume programme assesses the schedule and route options against these inputs. Capacity and delivery commitments are confirmed in the commercial proposal. The origin-traceability process addresses upstream evidence separately from component qualification, with missing records identified before the buyer accepts the route.

Buyer questions