3 Pack Nema 17 Stepper Motor TR8x8 400mm with T8 Lead Screw 2 Phase 1.8° High Torque 0.44Nm (62.31oz·in) Bipolar 1.7A 1.7Ω 40mm 4-Wire Connector Cable 1M for 3D Printer DIY Robot CNC
✔️ Handy, compact motion kit with strong torque and quiet operation for precise linear actuation
This 3-pack NEMA 17 lead screw stepper motor bundle is designed for precise linear motion in compact applications like 3D printers, CNC machines, and automation projects. Each unit pairs a NEMA 17 motor with a TR8x8 lead screw, delivering reliable, quiet operation with high torque for accurate positioning.
✅ NEMA 17 stepper motor with TR8x8 lead screw, 400 mm (15.75 in) length✅ 2-phase bipolar design, step angle 1.8° (200 steps per rev)
✅ Holding torque 0.44 Nm (62.31 oz-in)
✅ Rated current 1.7 A
✅ Resistance 1.7 Ω
✅ Inductance 3.1 mH ±20%
✅ Rotor inertia approx 60 g cm²
✅ Body size 42 x 42 x 39.2 mm (1.66 x 1.66 x 1.55 in)
✅ Lead screw TR8x8, 400 mm (15.75 in)
✅ Installation hole distance 31 mm (1.22 in)
✅ Weight 414 g (14.6 oz)
✅ Cable: 4-wire, Black (A+) Green (A-) Red (B+) Blue (B-)
✅ Cable length: 1 m
- ✅ Dielectric strength 500 V AC (1 minute)
✅ Temperature rise 80 K max
✅ Insulation resistance 100 MΩ min
✅ Insulation class UL B (130°C) [266°F]
✅ Operating ambient temperature -20°C to +50°C (-4°F to 122°F)
✅ Operating ambient humidity 15% RH to 95% RH
More Power, Less Noise: Experience steadier operation with our enhanced NEMA 17 Stepper Motor with T8 Lead Screw. Superior steel cores and optimized windings produce up to 20% higher holding torque. Engineered for quiet running, it reduces vibration and environmental sound interference.
Important Notes: Increasing speed lowers torque, with the recommended speed range of 0-600 RPM. Lower current decreases both torque and temperature rise, and reduced voltage results in lower torque (12-24 V DC range). The 42 mm Stepper Motor with T8 Lead Screw is used in 3D printers, DIY robots, CNC machines, and other automated systems. Its compact size and high torque suit demanding applications.
Body size: 42 x 42 x 39.2 mm (1.66 x 1.66 x 1.55 in) Lead screw length: 400 mm (15.75 in) Installation hole distance: 31 mm (1.22 in) Weight: 414 g (14.6 oz) Cable length: 1 m
💡 How does the combination of a 400 mm TR8x8 lead screw and NEMA 17 motors in a 3-pack affect torque, speed, and accuracy in a compact 3D printer setup, and what tuning steps should a hobbyist take to maximize performance across 0-600 RPM without overheating?
Answer: This handy bundle balances torque, speed, and reliability for precise motion in small machines.
- Set driver current to about 70-85% of rated (roughly 1.2-1.5 A) to balance torque with heat management.
- Use moderate microstepping (1/16 or 1/32) for smoother motion; note that higher microsteps can slightly reduce available torque.
- Ensure proper lead screw nut preload and lubrication to minimize backlash and sustain accuracy at various speeds.
- Keep the operating speed within the recommended 0-600 RPM window to prevent excessive torque loss and heat buildup.