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Two stainless steel MK7 drive gears 12mm wide 13mm tall with 5mm bore for 1.75mm filament

Unique-Bargains

Unique-Bargains MK7 Drive Gear 5mm Bore 2pcs

SKU CH-T29S-FHFSZ

Stainless-steel MK7 drive gears with 5 mm bore and deep grooves to grip 1.75 mm filament on 3D printers, two pieces

  • Deep grooves grip 1.75mm filament securely
  • Stainless steel construction resists wear during printing
  • 5mm bore fits standard extruder motor shafts
  • M4 thread allows direct mounting to extruder bodies
  • Pack of two gears provides a ready spare

Product Identity

The Unique-Bargains MK7 drive gear is a stainless-steel extruder component built for 3D printers that use 1.75mm filament. Its deep grooves provide a firm grip to keep material feeding smoothly. The gear has a 5mm bore, an M4 thread, a 12mm outer diameter and a 13mm height. Two pieces are supplied in each pack.

Suitability

This gear suits owners of RepRap-style direct extruders that accept a 5mm bore and M4 mounting. It works with standard 1.75mm filament setups. Builders whose extruders require a different bore size, thread pitch, or filament diameter should look at other parts.

Deciding Specification

The 5mm bore diameter is the single dimension that determines whether this gear fits your extruder shaft. Verify that your printer's drive shaft measures exactly 5mm before ordering.

Highlights

  • Deep grooves grip 1.75mm filament securely
  • Stainless steel construction resists wear during printing
  • 5mm bore fits standard extruder motor shafts
  • M4 thread allows direct mounting to extruder bodies
  • Pack of two gears provides a ready spare

Specifications

BrandUnique Bargains

Questions about this item

Does the M4 thread on this MK7 drive gear match standard extruder shafts?

The gear uses an M4 thread size with a 5 mm bore, which fits many common extruder motor shafts; verify your motor shaft diameter before ordering.

Will the 12 mm outer diameter and 13 mm height fit inside my extruder housing?

The gear measures 12 mm in outer diameter and 13 mm tall, so check your extruder body clearance against those dimensions to confirm fit.

How do I install the gear on the motor shaft without stripping the M4 thread?

Slide the gear onto the 5 mm bore, align the M4 set screw with the motor shaft flat, and tighten gently — over-torquing the small M4 screw is the common mistake.

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