Ningbo Goanwin Machinery Manufacturing Co., Ltd.

Lamination Presses: GP and GPH High-Speed Series

Presses built for motor cores: the GP and GPH high-speed series and the catalogue's rotor and stator listings, 45 to 550 tons.

Lamination Presses in This Range

A lamination press stamps electrical steel into stator and rotor cores at high speed, hundreds of strokes per minute, in progressive dies that punch, interlock and stack in one pass. Two published series in this range are built for it: the GP (85-550 tons), the manufacturer's stated motor lamination series, and the GPH (45-300 tons), documented for motor cores in sheet thinner than 0.5 mm — the classic electrical steel band. The manufacturer's platform catalogue lists the application directly, in a run of high-speed press listings for making rotors and stators at 125, 220 and 300 tons and a motor rotor and stator listing under the GPH series name.

Series / listingPublished data
GP series (official)85-550 t for stacked stator and rotor laminations of AC and DC motors; 60-500 SPM
GPH series (official)45-300 t; documented for sheet thinner than 0.5 mm
Catalogue lamination listings (125 t / 220 t / 300 t)Straight side double crank high-speed presses; 200-700 SPM per the listings, specialised for motor lamination — stators and rotors
Motor rotor and stator listing (GPH series name)Capacity options listed: 80, 125, 220, 300, 350, 400 (tons)

Selected per-model specifications for the GP and GPH are published on the high-speed press page; the process — slit coil to stacked core, interlocking dies, burr control — is worked through in the motor lamination stamping guide. This page is the product side of that split: the machines, as published.

What Makes a Press a Lamination Press

Rate alone does not do it. A lamination die is a long progressive die running thin, abrasive electrical steel, and the machines published for that duty are the GP and GPH official series, tabled above. The catalogue's lamination listings describe straight side double crank high-speed presses reaching 200-700 SPM according to production requirements, specialised for motor lamination with — in the listings' words — high precision and long press life. The GP series itself is not uniform in drive points: its published table lists the 400, 450 and 550 ton models as Three Points. The feeding side matters the same way: the feeding line in front of a lamination press is part of the system the quotation specifies.

Sizing a Lamination Press

  • Tonnage: the GP's published span is 85-550 t; which frame size a given core needs is read against the core drawing — send the core drawing and material thickness with the enquiry.
  • Sheet band follows the series: the GPH is the sub-0.5 mm specialist; the GP covers the general lamination range. Exact thickness windows are confirmed per model and die in the quotation.
  • Rate: the official GP range runs 60-500 SPM; the catalogue's lamination listings publish 200-700 SPM. No rate for a specific core is published here; a rate for a given job is confirmed in the quotation.
  • Die position: the die's dimensions and pitch are stated with the enquiry and read against the published bolster and die height figures; whether lamination dies are supplied with an order is confirmed in the enquiry.

The presses, not the motors, are what this factory sells; the manufacturer's published material does not itemise which motor types its press customers produce. The broader motor application field is on the applications page.

Frequently Asked Questions

What tonnage do lamination presses cover here?

The GP series covers 85-550 tons and the GPH 45-300 tons in the official range; the platform catalogue's lamination listings add 125, 220 and 300 ton straight side double crank high-speed models.

What sheet thickness do lamination presses handle?

The GPH series is documented for sheet thinner than 0.5 mm — the classic electrical steel band. The GP covers the general lamination range; exact windows are confirmed per model and die.

How fast do lamination presses run?

The official GP range is published at 60-500 SPM; the catalogue's lamination listings state 200-700 SPM according to production requirements. The rate for your die is set in the quotation.

Does the factory supply the lamination dies?

Die supply is not stated in the press listings. Send your core geometry with the enquiry: whether the die comes from your own toolmaker or is supplied with the order is settled in the quotation, and the press is configured for the die.

Send an Enquiry

Tell us the machine, your material and thickness, and the part you are forming. Tonnage, configuration and price are confirmed in the written quotation.

Or write to [email protected] / call +86 139 5747 7080.