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The Best Mechanical Round Belt Pulleys

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Discover now our comparison of the best Mechanical Round Belt Pulleys. It is never easy to choose from the wide range of offers. On the market, you will find an incalculable number of models, all at different prices. And as you will discover, the best Mechanical Round Belt Pulleys are not always the ones at the highest prices! Many criteria are used, and they make the richness and relevance of this comparison.
To help you make the best choice among the hundreds of products available, we have decided to offer you a comparison of the Mechanical Round Belt Pulleys in order to find the best quality/price ratio. In this ranking, you will find products listed according to their price, but also their characteristics and the opinions of other customers. Also discover our comparisons by categories. You won’t have to choose your products at random anymore.

No. 1
BQLZR 31x15x5MM Silver Aluminum Alloy Single Groove 5MM Fixed Bore Pulley for Motor Shaft 3-5MM PU Round Belt
  • Made of aluminum, Groove step pulley, long time and use.
  • 31MM diameter,5mm aperture,15MM Thickness.
  • Suitable for 3-5MM PU round belt.
  • Commonly used for DIY small drilling machine, milling machine, small unpowered spindle of machine tool.
  • The pulley fits over the 5mm spindle and is held firmly in place with two grub screws – there is no slippage when under tension. The width of the groove accommodates the driver belt perfectly
No. 2
BQLZR 58x16x8MM Silver Aluminum Alloy Single Groove 8MM Fixed Bore Pulley for Drilling Machine 3-5MM PU Round Belt
  • Made of aluminum, Groove step pulley, long time and use.
  • 58MM diameter,8mm aperture,16MM Thickness.Aluminum metal metric setscrews Finish is smooth and the interior bore is accurate (8mm).
  • Suitable for 3-5MM PU round belt.
  • Commonly used for DIY small drilling machine, milling machine, small unpowered spindle of machine tool.
  • Perfect fit for small three phase generator/ motor
  • Pulley hole type: fixed hole, with machine screws, you can use a torx drill to tighten the screws, easy to fix and use.
  • Application:Suitable for 8MM optical axis installation, the top screw hole specification on the side of the boss is metric M4, arranged at 90 degrees
  • Note:Please confirm the item size before purchasing.
No. 3
CNBTR Aluminum D16x8mm Single Slot Groove Pulley Bore 8mm Belt width 4mm with Wrench Fixed Screw for Motor Shaft Round Belt
  • [Material] Made of aluminum material, not easy to wear, and lasting performance.
  • Size:16x12x8mm/0.63x0.47x0.31inch(DiaxHxHole Dia)
  • Suitable for 3mm Round Belt.
  • For motors, mini spindles, model drives, motor shaft drives and etc.
  • With Fixed Screw and Wrench.
No. 4
CHANCS Outer Diameter 80mm Single Groove Pulley 6mm Fixed Bore Pulley for Drilling Machine 6MM PU Round Belt
  • Description:The inner hole of the pulley is accurate in size, formed with one knife, runs smoothly, and has high concentricity.Suitable for round belts, large contact area, non-slip and more durable.
  • Specification:Outer Diameter:80mm,Inner Diameter:6mm,Overall Thickness: 18.5mm,Step diameter: 30mm ,Step thickness: 8.5mm,Groove Bottom Diameter:71mm,Groove Width:7mm,Groove Depth: about4.5mm,Applicable Belts:6mm belt.
  • Package Content: 1×Pulley
  • Application:Mainly used in motor, mini spindle, model transmission design, motor shaft transmission, etc.
  • Attention:Pulleys with an outer diameter of 16mm and pulleys with other specifications are not suitable for use together. Pulley selection: first measure the diameter of the shaft to be installed, such as the shaft diameter of 8mm, and the pulley with an inner diameter of 8mm. This size will not be large or small, and the installation is just right.
No. 5
2pcs Aluminum 5mm Bore 2GT Pulley 60 Tooth + 2pcs GT2 20T Timing Belt Synchronous Wheel +2pcs 200mm Closed Loop Rubber Belt for 6mm Width Belt 3D Printer CNC Machine
  • This kit includes 2pcs 60Tooth 2GT timing pulleys, 2pcs 20T 2GT pulleys and 2pcs 200mm close belt loop, 1pc wrentch
  • Both Bore size is 5mm; Used for 6mm width 2GT timing belt
  • Material: Aluminum, rubber
  • Widely used for transmission machines like 3D Printer, CNC machines, Drilling machines and so on
No. 6
BQLZR 41x16x10MM Silver Aluminum Alloy Single Groove 10MM Fixed Bore Pulley for Motor Shaft 3-5MM PU Round Belt
  • Made of aluminum, Groove step pulley, long time and use.
  • 41MM diameter,10mm aperture,16MM Thickness.
  • Suitable for 3-5MM PU round belt.
  • Commonly used for DIY small drilling machine, milling machine, small unpowered spindle of machine tool.
  • The pulley is well balanced, not heavy, very polished and precise, it can handle a huge load.
No. 7
CHANCS Outer Diameter 30mm Single Groove Pulley 16mm Fixed Bore Pulley for Drilling Machine 6MM PU Round Belt
  • Description:The inner hole of the pulley is accurate in size, formed with one knife, runs smoothly, and has high concentricity.Suitable for round belts, large contact area, non-slip and more durable.
  • Specification:Outer Diameter:30mm ,Inner Diameter:16mm ,Overall Thickness: 15mm,Groove Bottom Diameter:20.5mm,Groove Width:7mm, Groove Depth: about4.75mm,Applicable Belts:6mm belt.
  • Package Content: 1×Pulley
  • Application:Mainly used in motor, mini spindle, model transmission design, motor shaft transmission, etc.
  • Attention:Pulleys with an outer diameter of 16mm and pulleys with other specifications are not suitable for use together. Pulley selection: first measure the diameter of the shaft to be installed, such as the shaft diameter of 8mm, and the pulley with an inner diameter of 8mm. This size will not be large or small, and the installation is just right.
No. 8
CNBTR 4.1x1.6x1.2cm Silver Aluminum Alloy 1.2cm Fixed Bore Single V-shape Pulley Wheel for Motor Shaft 0.3-0.5cm PU Round Belt
  • Fit timing belt: 0.3-0.5cm PU round belt.
  • Commonly used as a DIY non-powered spindle for small drills, milling machines and small lathes.
  • Made of Strong Aluminum Alloy with long service life.
  • 1.2cm Fixed Bore, Boss size: D2x0.7cm ,with two Accessory Fixed Screws.
No. 9
PATIKIL V-Belt Pulley, 10mm Fixed Bore 20mm Outer Dia Single Groove Pulley Wheel Aluminum Alloy V-Groove Drive Pulley for Motor Shaft 1-3MM PU Round Belt
  • Material: Aluminum Alloy | Size: 20 x 10mm / 0.79 x 0.39 inch (Outer Dia*Inner Dia) | Quantity: 1 PCS
  • Advantage: Crafted from aluminum alloy, fine workmanship, high strength, good thermal conductivity, corrosion resistant, lightweight, sturdy, and durable in use.
  • Instruction: The V-Belt Pulley is designed to be user-friendly, with a lightweight construction and simple installation process, even in elevated locations. It serves as a versatile bearing pulley that can effectively replace worn-out pulleys commonly found on gym equipment.
  • Application: V-Belt Pulleys come in vast sizes and designs, making them suitable for various power transmission needs. Their applications span multiple industries such as automotive, industrial machinery, agriculture, etc. It is widely used in DIY projects, small drilling machines, milling machines, and unpowered spindles for machine tools.
  • Notice: Please confirm the product size, before placing the order.
No. 10
BQLZR 41x16x6MM Silver Aluminum Alloy Single Groove 6MM Fixed Bore Pulley for Motor Shaft 3-5MM PU Round Belts
  • Made of aluminum, Groove step pulley, long time and use.
  • 41MM diameter,6mm aperture,16MM Thickness.
  • Suitable for 3-5MM PU round belt.
  • Commonly used for DIY small drilling machine, milling machine, small unpowered spindle of machine tool.
  • Suitable for 6MM optical axis installation, the top screw hole specification on the side of the boss is metric M4, arranged at 90 degrees

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Last update on 2025-04-10 / Affiliate links / Images from Amazon Product Advertising API