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Three small stainless-steel drive gears with 40 teeth and 5mm bore

Unique-Bargains

Unique-Bargains MK7/MK8 Drive Gear 40T 5mm Bore 3pcs

SKU CH-M912-ZW736

Stainless-steel 40-tooth drive gear with 5 mm bore grips 1.75 mm filament for MK7/MK8 extruders, three per pack

  • Stainless-steel construction resists wear during long prints
  • 40-tooth profile ensures consistent filament engagement
  • 5 mm bore fits MK7 and MK8 extruders directly
  • Deep grooves grip 1.75 mm filament securely
  • Three-piece pack provides ready spares for maintenance

Compatible Drive Gear for MK7 and MK8 Printers

This stainless steel drive gear fits MK7 and MK8 3D printers and accepts 1.75mm filament. The 5mm bore matches standard extruder motor shafts and the M3 thread size secures the gear in place. Each pack supplies three replacement gears for maintenance or upgrades.

Simple Integration With Standard Extruders

The gear mounts directly onto a 5mm motor shaft using the M3 thread without additional adapters. Deep grooves grip 1.75mm filament securely to reduce slipping during prints. The 12mm outer diameter and 12mm height fit existing extruder housings designed for MK7 or MK8 mechanisms.

Consistent Filament Feed Under Continuous Use

Stainless steel construction resists wear from the 40 teeth engaging filament over long print sessions. The material maintains tooth profile so grip remains steady when the extruder runs for hours. Three gears in the pack allow quick rotation to keep production moving without downtime.

Highlights

  • Stainless-steel construction resists wear during long prints
  • 40-tooth profile ensures consistent filament engagement
  • 5 mm bore fits MK7 and MK8 extruders directly
  • Deep grooves grip 1.75 mm filament securely
  • Three-piece pack provides ready spares for maintenance

Specifications

BrandUnique Bargains

Questions about this item

How many teeth does the MK7/MK8 drive gear have for 1.75mm filament?

The gear has 40 teeth with deep grooves designed to grip 1.75mm filament securely.

What noise or heat does the stainless steel gear produce during continuous printing?

As a passive metal component it generates no noise or heat of its own; any sound or temperature rise comes from the motor and hotend.

Which extruder shaft size must my 3D printer have for the 5mm bore to fit?

The gear requires a 5mm shaft diameter, matching the standard MK7/MK8 extruder specification.

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