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This is an LDO 42STH48-2504AH(S37) NEMA 17 stepper: a 48mm body, 1.8° per step, 2.5A per phase and 76 oz-in (5.5 kg-cm) of holding torque, with a 37mm extended 5mm shaft. The high-temperature build is the selling point: it is meant to keep its torque in hot enclosures where standard NEMA 17 motors lose strength or skip steps. It suits 3D printer hot-end and extruder builds, CNC and automation work that needs a long shaft to reach a pulley or coupler. Against ordinary 40mm NEMA 17 motors it trades a taller body and higher current draw for more torque and heat tolerance; the 2.5A rating means it needs a driver and supply that can feed it.
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The NEMA 17 Stepper Motor - HT - 48mm is built for heat-intensive environments. It has a 1.8º stepping angle and 76 oz-in (5.5 Kg-cm) of holding torque. It is designed to withstand high-temperature conditions without losing performance.
The motor has a 37mm extended shaft with a 5mm diameter. It connects through a 1 meter four-wire cable with a JST XH2.54 connector.
