High-speed Precision Press

Selection criteria

Tonnage 60–200 t, 200–800 spm, bottom-dead-centre accuracy.

Supply chain

Dongguan has a cluster of high-speed precision press builders, including Taiwanese-invested ones, that supply motor-lamination stampers across South China; top-end thin-gauge lines still use Swiss, Japanese or German presses. Compare bottom-dead-centre repeatability, frame rigidity and service response, not just tonnage and strokes.

Buyer FAQ

What tonnage and stroke rate do I need for motor laminations?

Small-motor laminations (up to about 100 mm OD) usually run on 60–125 t presses at 200–600 strokes per minute; larger stator cores need 200–400 t. Size the press on the progressive die's total blanking force plus interlocking force, with 30 % margin, not on the part size alone.

Why is bottom-dead-centre (BDC) repeatability so important?

BDC drift changes how deep the punches enter the strip. That shows up directly as burr height and as weak or over-pressed interlocks, which hurt the stacking factor and core losses. Look for BDC repeatability within ±0.01 mm and thermal-drift compensation.

Knuckle-joint, link or crank drive?

Crank presses suit general high-speed blanking. Knuckle-joint and link drives slow the ram near BDC, which reduces die wear and vibration and is preferred for thin electrical steel and in-die interlocking at high speed.

Where it is used