NEMA 17 stepper with Trapezoidal Threaded Bar

	TB42HT39-1684AL-32.5
Rated voltage / Phase	2,8 V
Rated current/ Phase	1,68 A
Resistance / Phase	1,65 Ω ± 10%
Inductance/ Phase	2,3 mH ± 20%
Holding torque	4,40 Kg·cm
Number of leads	4
Cable length	70 cm
End connector	Dupont 4pins
Weight	0,40 Kg
Motor length	39 mm
Total length	ca. 365 mm
Full step angle	1,8º ± 5% (without load)
Threaded rod	Ø8 mm, Length: 325 mm
Nut	POM, without backlash 4 x M3 screw holes

The motor comes with four 30cm long cables connected which is compatible with the majority of electronic components, from RAMPS over Sanguinololu to Megatronics.

These NEMA 17 have a rated power consumption of only 5W, and are specially designed for use in conventional 3D printer Z axes, as a substitute for shaft couplers and threaded rods.

The main advantage of this system is that the special nut together with the lead screw prevent backslash, which leads to a better 3D printing quality since the thickness of the layers can be controlled with a high precision. At the same time, this permits a higher positioning speed on the Z axis.

The price is for one unit.