Double V-Groove Aluminum Drive Pulley For A-Section V-Belt Pulleys OD 40-100mm
Double V-Groove Aluminum Drive Pulley For A-Section V-Belt Pulleys OD 40-100mm
Double V-Groove Aluminum Drive Pulley For A-Section V-Belt Pulleys OD 40-100mm
Double V-Groove Aluminum Drive Pulley For A-Section V-Belt Pulleys OD 40-100mm
Double V-Groove Aluminum Drive Pulley For A-Section V-Belt Pulleys OD 40-100mm
Double V-Groove Aluminum Drive Pulley For A-Section V-Belt Pulleys OD 40-100mm
Double V-Groove Aluminum Drive Pulley For A-Section V-Belt Pulleys OD 40-100mm
Double V-Groove Aluminum Drive Pulley For A-Section V-Belt Pulleys OD 40-100mm
Double V-Groove Aluminum Drive Pulley For A-Section V-Belt Pulleys OD 40-100mm
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Double V-Groove Aluminum Drive Pulley For A-Section V-Belt Pulleys OD 40-100mm

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By HomeDIYer®

Price:
$24.55 USD
Stock:
In stock (500 units), ready to be shipped

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Description

Double V-Groove Aluminum Drive Pulley for A-Section V-Belt — Precision Motion for Builders and Engineers

When a slipping or misaligned belt derails your build mid-project, the culprit is almost always an undersized or poorly matched pulley. Engineers, CNC builders, and automation hobbyists who need reliable, repeatable belt drive performance rely on a double V-groove aluminum drive pulley for A-section V-belt systems to keep their machines running true.

Each pulley is machined from aluminum alloy with dual A-section V-grooves, accepting standard A-type V-belts. Outer diameters range from 40mm to 100mm (~1.57" to 3.94"), with bore diameters from 8mm to 55mm (~0.31" to 2.17") to suit a wide range of shaft sizes. The dual-groove design allows two parallel belts to run simultaneously, doubling torque transfer capacity without increasing pulley diameter.

Typical use cases include DIY CNC router spindle drives, conveyor belt systems requiring dual-belt redundancy, motor-to-gearbox coupling in automation rigs, and custom go-kart or small engine drive trains where compact, lightweight power transmission is critical.

⚙️ Compatible with standard A-section (A-type) V-belts. Verify your shaft diameter matches the selected bore size before ordering.

✅ Key Features of These Double V-Groove Aluminum Drive Pulleys

  • 🔩 Dual A-Section Grooves — Two parallel V-grooves accept standard A-type V-belts simultaneously, doubling torque capacity in a compact footprint.
  • 🪶 Aluminum Alloy Construction — Lightweight yet rigid material reduces rotational inertia, enabling faster acceleration and lower bearing load compared to steel equivalents.
  • 📐 Wide Size Range — OD 40–100mm and bore 8–55mm cover the majority of small-to-medium drive applications; select the exact combination from variant options.
  • 🎯 Precision-Machined Bore — Bores are machined to close tolerances for minimal runout, reducing vibration and extending belt life in high-cycle applications.
  • 🔄 Versatile Drive Ratio Flexibility — Pair different OD pulleys on driver and driven shafts to achieve your target speed ratio without custom fabrication.
  • 🛠️ Drop-In Replacement Ready — Standard A-section groove profile ensures compatibility with off-the-shelf A-type V-belts available at any industrial supplier.

📐 Technical Specifications — Double V-Groove Aluminum Drive Pulley

Belt Type A-Section (A-Type) V-Belt
Number of Grooves 2 (Double V-Groove)
Outer Diameter (OD) 40mm / 60mm / 80mm / 100mm (1.57" / 2.36" / 3.15" / 3.94")
Bore Diameter See variant options (8mm–55mm)
Material Aluminum Alloy
Finish See variant options
Keyway See variant options
Set Screw See variant options
Weight See variant options
Application CNC drives, conveyor systems, motor coupling, automation equipment

❓ Frequently Asked Questions

How do I choose the right OD and bore diameter for my application?

Select the OD based on your required drive ratio — divide the driven shaft speed by the driver shaft speed, then multiply by your driver pulley OD to get the driven pulley OD. For bore diameter, measure your shaft diameter precisely with calipers and choose the matching bore. If your shaft uses a keyway, confirm keyway availability in the variant options or contact us before ordering.

What V-belt cross-section is compatible with these pulleys?

These pulleys are machined specifically for A-section (A-type) V-belts, which have a top width of approximately 13mm (0.5") and a depth of approximately 8mm (0.31"). Do not use B-section, C-section, or metric SPZ/SPA belts — the groove angle and width will not match, causing rapid belt wear and potential slippage.

Can I run only one belt in a double-groove pulley?

Yes. Running a single belt in one groove of a double-groove pulley is mechanically acceptable. The unused groove simply remains empty. This is a common approach when you want the option to add a second belt later for increased torque capacity without replacing the pulley.

Is aluminum strong enough for my drive system?

Aluminum alloy pulleys are well-suited for light-to-medium duty applications such as CNC routers, small conveyors, and hobbyist automation rigs. For heavy industrial loads, continuous high-torque operation, or environments with abrasive debris, a cast iron or steel pulley may be more appropriate. If you are unsure whether aluminum suits your load requirements, contact us with your torque and RPM specifications.

Will these pulleys corrode or oxidize over time?

Aluminum naturally forms a thin oxide layer that provides moderate corrosion resistance in dry and indoor environments. For outdoor use or exposure to moisture, coolants, or mild chemicals, the surface finish (anodized or bare) affects long-term durability. Check the variant options for finish details, or contact us to confirm suitability for your environment.

Do these pulleys come with a set screw or keyway for shaft locking?

Set screw and keyway availability varies by variant. Please refer to the variant options or product images for your selected OD and bore combination. If your application requires a specific locking method and it is not shown, contact us before purchasing to confirm.

What is the maximum RPM these pulleys are rated for?

Maximum RPM depends on the OD, bore, belt tension, and balance of the specific variant. As a conservative guideline, aluminum V-belt pulleys in this size range are typically used at up to 3,000–5,000 RPM in light-duty applications. For high-speed spindle or motor applications, contact us with your RPM and load requirements for confirmation.

🛒 Select your OD and bore diameter above, then add to cart.

 

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