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Five brass extruder gears with 40 teeth and 5mm bore

Unique-Bargains

Unique-Bargains Brass Drive Gear Extruder Wheel 40 Teeth 5mm Bore 5pcs

SKU CH-VR7Z-DDGQM

Brass extruder gear with 40 teeth and 5 mm bore grips 1.75 mm filament, pack of five

  • Deep grooves grip 1.75mm filament securely
  • Brass construction resists wear during continuous printing
  • 40 teeth ensure smooth, consistent extrusion
  • 5mm bore fits standard M3 motor shafts
  • Pack of five provides ready spares for maintenance

Brass Extruder Gear Pack for 3D Printers

This set supplies five brass drive gears designed to grip 1.75mm filament on compatible 3D printers. Each gear features 40 teeth and a 5mm bore for direct mounting on a 5mm motor shaft. The pack suits hobbyists and makers who need spare or replacement drive gears for routine maintenance or upgrades.

Mechanical Limits of the 5mm Bore Interface

The 5mm bore restricts use to stepper motors or extruder assemblies with a matching 5mm shaft diameter. The M3 thread size secures the gear with a standard set screw, so the shaft must accept M3 fastening. Printers with different shaft sizes or mounting patterns cannot use these gears without an adapter.

Tooth Count Determines Filament Grip Resolution

The 40-tooth profile sets the linear advance per motor step and directly affects extrusion precision. A different tooth count would change the gear ratio and require firmware recalibration. Verify that your extruder design calls for a 40-tooth gear before ordering.

How it compares

Measured against everything we stock in Print & Scan Accessories, at today’s prices. Recalculated every night.

Price $4.99
Cheaper than about 99% of the 5,855 comparable items (median $91.99).

Specifications

Product
Brand nameUnique Bargains

Questions about this item

Should I choose the 5-piece pack of 40-tooth gears or look for a different tooth count?

The pack contains five identical brass gears each with 40 teeth, so you receive a matched set for one extruder or spares.

How does the 1.75 mm filament specification translate to actual grip on my printer?

Deep grooves on the 11 mm diameter brass wheel are cut for 1.75 mm filament, giving positive traction without slipping.

Will the 5 mm bore and M3 thread fit my printer's extruder shaft?

The gear has a 5 mm bore and an M3 thread, matching shafts and set-screws designed for that size.

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