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Updated: 06 Apr 2026

10 Best Mechanical Flat Belt Pulleys

#1 Best Pick
VGOL 6PCS 2GT-6 3D Printer Timing Belt Set - 6mm Width, 110mm to 400mm Lengths, 20 Tooth 5mm Bore Aluminium Pulley

VGOL 6PCS 2GT-6 3D Printer Timing Belt Set - 6mm Width, 110mm to 400mm Lengths, 20 Tooth 5mm Bore Aluminium Pulley

Brand: VGOL
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  • Material : These GT2-6 rubber timing belts are made from a rubber material with good resistance to wear, oil and heat. They have good transmission efficiency and resistance to stretching, providing long-lasting use and consistent transmission performance.
  • GT2-6 rubber timing belts : These timing belts are available in the GT2-6 size with a width of 6 mm. they offer excellent strength and durability for stable transmission of power and motion.
  • 20-tooth timing belt pulley : Made of aluminium with timing belt, perfectly machined and with a smooth surface. The timing pulley with 20 belt contact teeth minimises the risk of belt slippage.
  • Quantity and specification : This product contains an 8-piece accessory set which includes 6 GT2 rubber timing belts and 2 x 20 tooth 5mm timing pulleys. The length of the timing belts are 110mm, 122mm, 158mm, 200mm, 300mm and 400mm, one of each size.
  • Application : GT2-6 rubber timing belts are commonly used in the drive systems of 3D printers to drive the shafts and components of the printer, ensuring precise position and synchronised movement.
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#2 Best Value
Twilight Garage Centrifugal Clutch Belt Drive with Pulley 3/4" Bore for Go Kart Mini Bikes

Twilight Garage Centrifugal Clutch Belt Drive with Pulley 3/4" Bore for Go Kart Mini Bikes

Brand: Twilight Garage
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  • Brand new 3/4" bore Centrifugal Clutch With Pulley; 3/16" Key way.
  • Pulley accommodates 1/2" ABS Belt Style.
  • This clutch is used primarily on Mini Bikes, Go Karts and other applications.
  • Easy to Install. Professional Installation is Highly Recommended
  • At Twilight Garage, If you need any assistance, or just have questions, please do not hesitate to contact us. We are dedicated to providing you with all of the information you need to make a confident purchase, and we continue to support you after your purchase.
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#3 Budget Pick
uxcell 2Pcs Single Groove Pulley, 16mm Fixed Bore 30mm Outer Diameter Aluminum Alloy Mechanical Belt Pulley with Hex Wrench for 6mm PU Round Belt

uxcell 2Pcs Single Groove Pulley, 16mm Fixed Bore 30mm Outer Diameter Aluminum Alloy Mechanical Belt Pulley with Hex Wrench for 6mm PU Round Belt

Brand: uxcell
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  • Package Content: 2Pcs Single Groove Pulley; Aperture Diameter: 16mm / 0.63"; Outer Diameter: 30mm / 1.18"; And applicable for 6mm PU round belt
  • Material: Our single groove pulley is made of aluminum alloy, with fine workmanship, high strength, firm and stable, and corrosion-resistant
  • Design: The groove design is conducive to the precise alignment between the belt and the pulley, reducing errors and improving transmission efficiency; it runs smoothly and rotates at high speed without shaking, effectively suppressing transmission noise and fluctuations and improving the stability of belt operation
  • Easy To Use: Compared with other transmission methods, the single groove pulley has a simple structure and is easy and quick to install. You only need to put the belt of the correct specification on the single groove pulley. Before placing an order, you need to measure the diameter of the shaft to be installed
  • Wide Application: Aluminum alloy single groove is suitable for motors, micro spindles, model transmission design, motor shaft transmission, etc
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#4 Top Choice
uxcell 2Pcs O-480 O Type V-Belt 480mm/18.9" Inner Length x 0.39" Width x 0.24" Height, O-Type Closed-Loop Rubber Transmission Belt

uxcell 2Pcs O-480 O Type V-Belt 480mm/18.9" Inner Length x 0.39" Width x 0.24" Height, O-Type Closed-Loop Rubber Transmission Belt

Brand: uxcell
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  • Size: O-480 v belt. Inner length: 18.9" (480mm), width: 0.39" (10mm), thickness: 0.24" (6mm).
  • Made of rubber material, high-temperature resistance, wear resistance, strong corrosion resistance, long service life and high coefficient of friction. Polyester hard cord strengthens exceptional strength and durability, making it particularly well-suited for prolonged machine operation.
  • The belt offers the flexibility of a flat belt while delivering the high power transmission performance of a traditional V-belt.
  • Fit for many industrial machinery, appliances, and power tools, such as small compressors, pumps, lawnmowers, drills, and saws.
  • Notice: Proper belt tension and pulley alignment should be maintained during operation. Too little tension may cause slippage and wear on the belt and pulleys; too much tension makes the stress on the belt, pulleys, and shaft too great.
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#5 Popular Choice
Lokkr 2PCS 6.35mm Bore 20&60 2GT Synchronous Wheel Set Teeth Aluminum Timing Pulley + Closed Loop Rubber Length 200mm Width 6mm Belt x2 and a M4 Allen Wrench, for 3D Printer, CNC Machine, Power Supply

Lokkr 2PCS 6.35mm Bore 20&60 2GT Synchronous Wheel Set Teeth Aluminum Timing Pulley + Closed Loop Rubber Length 200mm Width 6mm Belt x2 and a M4 Allen Wrench, for 3D Printer, CNC Machine, Power Supply

Brand: Lokkr
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  • ➤High Quality Material: Made of high-quality Aluminum Alloy, Surface oxidation treatment, durable, fine workmanship and high transmission accuracy.
  • ➤Size: Width: 6mm; Thickness: 1.5mm; Pitch: 2mm.
  • ➤Long Service Life: Wear resistant. Anti-wear nylon tooth surface for better protection of the tooth joint and extended service life.
  • ➤Simple structure: Easy to install, easy to assemble and disassemble.
  • ➤Multifunction: Widely used in 3D printers, milling machines, gear forming machines, drilling machines, CNC lathes, hobbing machines, dishwashers, packaging machinery, motorcycles, automobile, dryer, food machinery, inkjet printer, and other mechanical transmissions.
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#6 Top Pick
HAKIDZEL 5pcs 2gt Gt2 Pulleys 20t Bore 8mm Timing Belt Pulley for 3D Printer Aluminum 6mm Belt Compatible

HAKIDZEL 5pcs 2gt Gt2 Pulleys 20t Bore 8mm Timing Belt Pulley for 3D Printer Aluminum 6mm Belt Compatible

Brand: HAKIDZEL
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  • Belt pulley: designed specifically for linear motion.
  • Timing belt pulley 8mm: gt2 timing belts and compatible pulleys(gt2 pulley) are choices for repraps and repstraps.
  • Timing belt pulley: for best performance you want at least 6 teeth in with the pulley at any given time. that minimizes the chance of the belt slipping, and helps reduce backlash even further. in practice that means you want a minimum of a 12 teeth pulley, and i usually try to get at least 32 teeth.
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#7 Top Pick
Lokkr 6PCS Aluminum 20 Teeth GT2 Timing Belt Pulley 5mm Bore 6mm Width, Synchronous Wheel for 3D Printer Parts Width 6mm Timing Belt and M4 Wrench, for 3D Printer, CNC Machine, Power Supply

Lokkr 6PCS Aluminum 20 Teeth GT2 Timing Belt Pulley 5mm Bore 6mm Width, Synchronous Wheel for 3D Printer Parts Width 6mm Timing Belt and M4 Wrench, for 3D Printer, CNC Machine, Power Supply

Brand: Lokkr
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  • ➤High Quality Material: Made of high-quality Aluminum Alloy, Surface oxidation treatment, durable, fine workmanship and high transmission accuracy.
  • ➤Size: 20T 5mm bore Aluminum GT2 6mm Timing Belt Pulley.
  • ➤Long Service Life: Wear resistant. Anti-wear nylon tooth surface for better protection of the tooth joint and extended service life.
  • ➤Simple structure: Easy to install, easy to assemble and disassemble.
  • ➤Multifunction: Widely used in 3D printers, milling machines, gear forming machines, drilling machines, CNC lathes, hobbing machines, dishwashers, packaging machinery, motorcycles, automobile, dryer, food machinery, inkjet printer, and other mechanical transmissions.
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#8 Top Pick
Lokkr 6PCS Aluminum 20 Teeth GT2 Timing Belt Pulley 8mm Bore 6mm Width, Synchronous Wheel for 3D Printer Parts Width 6mm Timing Belt and M4 Wrench, for 3D Printer, CNC Machine, Power Supply

Lokkr 6PCS Aluminum 20 Teeth GT2 Timing Belt Pulley 8mm Bore 6mm Width, Synchronous Wheel for 3D Printer Parts Width 6mm Timing Belt and M4 Wrench, for 3D Printer, CNC Machine, Power Supply

Brand: Lokkr
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  • ➤High Quality Material: Made of high-quality Aluminum Alloy, Surface oxidation treatment, durable, fine workmanship and high transmission accuracy.
  • ➤Size: 20T 8mm bore Aluminum GT2 6mm Timing Belt Pulley.
  • ➤Long Service Life: Wear resistant. Anti-wear nylon tooth surface for better protection of the tooth joint and extended service life.
  • ➤Simple structure: Easy to install, easy to assemble and disassemble.
  • ➤Multifunction: Widely used in 3D printers, milling machines, gear forming machines, drilling machines, CNC lathes, hobbing machines, dishwashers, packaging machinery, motorcycles, automobile, dryer, food machinery, inkjet printer, and other mechanical transmissions.
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#9 Top Pick
6PCS 2GT-6 Timing Belt 110mm-610mm Closed Loop Width 6mm With 2PCS GT2 Pulley 20 Teeth 5 Bore for 3D Printer, Dishwashers, Packaging Machinery

6PCS 2GT-6 Timing Belt 110mm-610mm Closed Loop Width 6mm With 2PCS GT2 Pulley 20 Teeth 5 Bore for 3D Printer, Dishwashers, Packaging Machinery

Brand: MEZOKUCEL
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  • 【High Quality Material】The 2GT timing belt is made of premium rubber, durable and flexible. It's designed specifically for linear motion, high positioning accuracy.
  • 【Set Includes】6Pcs width: 6 mm closed timing belt, 110 mm, 158 mm, 200 mm, 300 mm, 400 mm, 610 mm; 2pcs timing belt pulley 20 Teeth 5mm Bore.
  • 【Fine Pulley】20 Teeth Timing Pulley adopt high-quality aluminum with timing belt, excellently machined, finished smoothly. The timing pulley with 20 teeth contact with the belt which minimizes the risk of the belt slipping.
  • 【Stable and Efficient】2GT synchronous belt transmission is stable, with buffer and strong shock absorption capacity.. High transmission efficiency, energy-saving effect.
  • 【Scope of Application】Suitable for most kind of 3D printers, dishwashers, packaging machinery, automobile, food machinery, inkjet printer, conveyor, bonders ect.
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#10 Top Pick
Lokkr 3D Printing GT2 Timing Belt Set, 5 Meters GT2 Open Timing Belt 2mm Pitch 6mm + 5pcs 20 Teeth 5mm Bore Pulley Wheel + 2 Pcs Open Belt Clip + Allen Wrench, 3D Printer Accessories for CR-10 Ender 3

Lokkr 3D Printing GT2 Timing Belt Set, 5 Meters GT2 Open Timing Belt 2mm Pitch 6mm + 5pcs 20 Teeth 5mm Bore Pulley Wheel + 2 Pcs Open Belt Clip + Allen Wrench, 3D Printer Accessories for CR-10 Ender 3

Brand: Lokkr
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  • ➤High Quality Material: Lokker GT2 timing belt is made of PU material, soft and durable, high wear resistance and good crack resistance, long anti-wear life.
  • ➤Easy to Use: Easy to install and maintain, each Belt Clip can be opened, and the length can be adjusted according to your needs. The GT2 timing belt combined with the GT2 pulley provides perfect and precise linear functions for your 3D printer.
  • ➤Long Service Life: Wear resistant. Anti-wear nylon tooth surface for better protection of the tooth joint and extended service life.
  • ➤Package: 5 Meters GT2 Open Timing Belt X 1, Open Belt Clip X 2, 20 Teeth 5mm Bore Pulley Wheel X 5, Allen Wrench X 1.
  • ➤Multifunction: Widely used in 3D printers, milling machines, gear forming machines, drilling machines, CNC lathes, hobbing machines, dishwashers, packaging machinery, motorcycles, automobile, dryer, food machinery, inkjet printer, and other mechanical transmissions.
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