How to Choose a Neodymium Magnet Supplier for Robotics and Servo Motors

Request the hot curves for the proposed material. For a ring scan, specify the radius, probe orientation, angular reference and temperature. Distinguish a sample trace from production capability and distinguish surface field from motor back-EMF. Review the historical scan limits before using the comparison.

The radial-ring TDS, Rev A of 31 July 2026, states OD 20 to 75 mm, ID 15 to 68 mm, wall 2 to 7 mm and height 5 to 50 mm, with ±0.05 mm standard dimensional tolerance within the qualified route. These limits are not freely combinable. Confirm the drawing, grade, pole pattern and individual features before quotation.

The separate integrated-Halbach route states ±0.02 mm on critical features, subject to feature and drawing confirmation. Check the current certificate for the actual manufacturing entity, address and activity. Agree PPAP level and required reports for the order; a network relationship does not certify every plant or assembly.

Include tooling, machining, assembly yield, inspection and delivery terms. Reject fixed country-wide price comparisons that lack matched parts and a dated quotation basis. A lower unit price may be useful, but it does not establish the cost of qualification or a failed assembly.

Grade suffixes and F/N/D series labels do not establish composition or export clearance. Classify the actual item and transaction with the exporter, including the parties, end use and route. See the export-control guide. Agree tooling, sample quantity, inspection and production milestones in the quotation.

Export release depends on any required authorization. No standard prototype quantity or fixed delivery interval is promised here.

Mainrich engineers and quality-controls parts through a four-site production network in which it holds equity stakes. Mainrich’s sintered NdFeB range is N30 to N56, with no AH grades. The top grade depends on the temperature series: N56, N54M, N52H, N52SH, N50UH and N45EH. Grades up to N52SH can be made without a Chinese export licence, so we offer those first; UH and EH grades need a licence, applied for per order.

Confirm the grade, suffix, geometry and production route for each drawing. This summary does not offer every combination; grades outside it in educational examples are not Mainrich supply offers. The reported N45H magnetic comparison and the separate historical 50H Dy-reduction example have different scopes.

See the GBD evidence and limitations. Finished-part savings require a quotation and qualification of the proposed route.