Longs Nema14 Stepper Motor

Compact NEMA 14 round pancake stepper for direct-drive extruder builds. Model 36HS2418CL16 is a short 2-phase, 4-wire motor with an integrated 10-tooth drive gear for compact 3D-printer extruder layouts.

Why this motor

• NEMA 14 round pancake format: useful where a square motor takes too much toolhead space.
• 10-tooth gear already installed: suited to compact geared extruder builds that use a small motor pinion.
• Lightweight body: about 83 g, helping keep moving toolhead mass down.

Specifications

From the factory drawing (second image):

• Model / MPN: 36HS2418CL16 (36HS2418 family, also sold as Wantai 36BYGH)
• Frame: NEMA 14 round pancake, Ø36.4 mm × 19 mm body
• Motor type: 2-phase hybrid bipolar stepper, 4-wire
• Step angle: 1.8° ±5% (200 steps/rev)
• Rated current: 1.88 A/phase at 3.48 V
• Phase resistance / inductance: 1.85–2.1 Ω · 1.05–1.2 mH (factory drawing revisions differ slightly)
• Holding torque: 13 N·cm min (≈18 oz·in) · detent torque 0.5 N·cm max
• Rotor inertia: 6 g·cm²
• Mounting: 2× M3 tabs on a 43.85 mm bolt span
• Shaft: Ø2.5 mm knurled, 6 mm long, 10-tooth module-0.5 pinion (20° pressure angle) installed
• Leads: ~40 mm AWG26 leads to a JST-PH (PHR-4) plug — black/green = phase A, red/yellow = phase B
• Insulation: Class B (80 K max temperature rise)
• Weight: ~83 g

Fitment and use

• Best fit: compact direct-drive extruder projects that call for a round NEMA 14 pancake motor with a 10T gear.
• Pairs well with BMG-style extruder internals such as the BMG Clone Components Kit.
• For Voron V0 round-motor toolhead wiring, see the Voron V0 Umbilical Toolhead Board for Round Motor.
• Klipper: TMC autotune ships constants for this motor — wantai-36HS2418 (alias generic-36BYGH-36HS2418CL16).
• Current tip: in an enclosed toolhead most builders run 0.8–1.4 A; the full 1.88 A rating runs the motor hot.

What it is not

• Not a generic square NEMA 14 motor — this is the round pancake style shown in the photos.
• Not a complete extruder kit; this listing is for the motor only.
• Confirm your extruder’s pinion tooth count, connector, and motor-current settings before installing.