LDO-36STH20-1004AH(IG8T) Extruder Motor for Jabberwocky Toolhead by LDO Motors

LDO-36STH20-1004AH(IG8T) NEMA14 Extruder Motor for Jabberwocky Toolhead — 8-Tooth Integrated Gear, Class H 180°C, 1.0A, High Temperature

Official LDO Motors replacement extruder stepper motor for the Jabberwocky Toolhead — the LDO-36STH20-1004AH(IG8T), a NEMA14 36mm round pancake motor with a factory-pressed 8-tooth integrated gear (IG8T) specifically matched to the Jabberwocky's Bondtech compound drive gear configuration. This is the exact motor that ships with the Jabberwocky Standard and Assembled kits — the correct replacement when the motor fails or is damaged, or when building from BOM with the exact factory spec.

⚠️ 8-tooth gear — Jabberwocky specific. This motor uses an 8-tooth integrated gear (IG8T), not the 9T or 10T variants used in other extruder applications. Installing a motor with the wrong gear tooth count changes the extruder's gear ratio and requires E-step recalibration or may not mesh correctly with the Jabberwocky's drive system.
⚠️ Max stepper current: 1.0A RMS. Do not exceed 1A to the motor. For enclosed hot-chamber use, run at 0.6–0.7A to reduce self-heating and extend motor life.
⚠️ Verify connector pinout before connecting. Check that your toolboard's motor connector pinout matches the LDO motor wiring before powering on — incorrect pinout can damage the TMC driver on the Nitehawk 36.

Why the Jabberwocky Uses an 8-Tooth Motor Gear

The Jabberwocky's extruder drive system uses a Bondtech compound drive gear in an offset configuration, where the motor's integrated gear meshes with the compound gear to set the drive ratio between motor speed and filament feed rate. The 8-tooth motor gear — rather than the more common 9T or 10T used in other LDO extruder applications — is the specific tooth count that optimizes the torque-to-speed balance for the Jabberwocky's filament changing unit (FCU) use case: enough torque to reliably load and unload filament through the rapid cycles of multi-material printing, at a speed that keeps transitions fast. Using a motor with a different tooth count would shift this balance and require firmware-level compensation.

NEMA14 Round Pancake — 36mm Diameter, 20mm Body

The 36mm round (pancake) NEMA14 form factor is the standard for lightweight direct-drive toolhead motors — smaller frame than NEMA17, shorter body than most NEMA14 variants, and compact enough to mount directly behind the extruder without adding significant mass to the toolhead. The 20mm body length keeps the Jabberwocky's overall depth manageable for toolhead mounting across a range of printers. The motor runs significantly cooler than NEMA17 equivalents at the same torque output — an important consideration in the enclosed chambers where the Jabberwocky is typically deployed.

Class H 180°C Insulation — Built for Hot Chambers

Standard extruder motors use Class B insulation rated to 130°C. In an enclosed printer running ABS or ASA at 60–70°C chamber temperature, with the motor mounted close to the hotend and running at sustained current, the winding temperature can approach or exceed the Class B ceiling. The LDO-36STH20-1004AH(IG8T) uses Class H insulation rated to 180°C — a 50°C safety margin over Class B — giving the winding insulation real headroom in demanding enclosed environments. Maximum recommended operating temperature for sustained use is 120°C at rated current (1.0A), or higher at reduced current.

Integrated Gear — Factory Pressed, Zero Backlash

The 8-tooth gear is factory-pressed onto the motor shaft as a permanent assembly — not a separate component that slides on and is secured with a set screw. Factory pressing eliminates the gear runout and backlash that accumulates over time in press-fit or set-screw gear assemblies, maintaining consistent filament feed rate through thousands of load/unload cycles. The integrated design also means there's no set screw to loosen under vibration — a failure mode that causes inconsistent extrusion in high-cycle multi-material workflows.

Specifications

What's Included

When Do You Need This?

Order this as a replacement if your Jabberwocky motor has failed — whether from electrical damage, overheating from sustained over-current, or physical damage from a toolhead crash. It's also the correct motor to source independently if you're building a Jabberwocky Basic kit and already have a Nitehawk 36 and Phaetus Conch hotend but need the motor. Do not substitute with a 9T or 10T variant — the tooth count is part of the Jabberwocky's calibrated drive system and changing it requires E-step recalibration at minimum.

Resources

• Jabberwocky GitHub — BOM, motor specs, assembly instructions

Browse our full Jabberwocky toolhead ecosystem at 3D Printer Extruders, or explore all drivetrain upgrades at 3D Printer Upgrades.