5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width
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5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width

5M 20~26 Teeth Synchronous Wheel Timing Belt Pulley for 15/20/26mm Belt Width

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Price:
$14.93 USD
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In stock (500 units), ready to be shipped

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Description

5M Timing Belt Pulley — Precision Synchronous Drive for DIY Automation & CNC Projects

When your CNC router skips steps or your 3D printer loses position mid-print, the culprit is often a mismatched or worn timing pulley. Makers, workshop engineers, and automation hobbyists who demand repeatable, slip-free motion need a 5M timing belt pulley that fits their exact shaft and belt width without compromise.

This 5M synchronous wheel timing belt pulley is machined from aluminum alloy and is available in tooth counts from 20 to 26 teeth, with bore diameters ranging from 5 mm (0.20 in) to 25 mm (0.98 in). Two hub styles are offered — BF-Type (with set-screw flange) and K-Type (with keyway) — and belt widths of 15 mm, 20 mm, and 26 mm are stocked to match standard 5M open-loop and closed-loop belts.

Typical use cases include DIY CNC router X/Y axis drives, desktop 3D printer extruder and motion systems, small conveyor and pick-and-place automation rigs, and educational robotics platforms where precise angular positioning is required.

⚙️ Compatibility: Fits standard 5M (5 mm pitch) synchronous timing belts. Belt width must match the pulley's flange width (15 mm, 20 mm, or 26 mm). Bore size must match your motor or drive shaft diameter. Select keyway (K-Type) or set-screw (BF-Type) hub to suit your shaft retention method.

✅ Key Features of These 5M Timing Belt Pulleys

🔩 Two Hub Styles

BF-Type features a set-screw flange for quick shaft mounting; K-Type includes a machined keyway slot for positive torque transmission on keyed shafts.

📐 Wide Tooth & Bore Range

Available in 20, 22, 24, 25, and 26 tooth counts with bore options from 5 mm to 25 mm, covering the majority of NEMA 17/23 stepper and small servo shaft sizes.

📏 Three Belt Width Options

Flanged for 15 mm, 20 mm, and 26 mm wide 5M belts, allowing you to match the pulley to your existing belt inventory without modification.

🏗️ Aluminum Alloy Construction

Lightweight yet rigid aluminum body keeps rotational inertia low, which is critical for high-acceleration CNC and 3D printing motion systems.

🎯 Precision Tooth Profile

5 mm pitch tooth geometry is machined to engage standard 5M belts with minimal backlash, supporting accurate positioning in open-loop stepper-driven systems.

🔄 Keyed Bore Variants Available

Select bore options include pre-cut keyway slots (e.g., 3×1.4 mm, 4×1.8 mm, 5×2.3 mm, 6×2.8 mm) for positive shaft locking without relying solely on set screws.

📐 Technical Specifications — 5M Timing Belt Pulley

Belt Pitch 5M (5 mm pitch)
Tooth Count 20 / 22 / 24 / 25 / 26 teeth (see variant options)
Hub Style BF-Type (set-screw flange) / K-Type (keyway)
Belt Width Compatibility 15 mm / 20 mm / 26 mm
Bore Diameter 5 mm – 25 mm (see variant options)
Keyway Options 3×1.4 mm / 4×1.8 mm / 5×2.3 mm / 6×2.8 mm (where applicable)
Material Aluminum alloy
Finish See variant options
Outer Diameter See variant options
Hub Length See variant options

❓ Frequently Asked Questions

How do I choose the correct tooth count for my application?

The tooth count determines the pulley's pitch diameter and, combined with your belt length, sets the drive ratio. For most CNC and 3D printer applications, 20-tooth pulleys are standard on the motor shaft. Higher tooth counts (24–26) are used on driven shafts to create a speed reduction. Match the tooth count to your motion system's design specifications.

What is the difference between BF-Type and K-Type hubs?

BF-Type pulleys have a smooth bore with one or two set-screw holes on the hub flange. They are quick to install and suitable for lighter-duty or low-torque applications. K-Type pulleys have a machined keyway slot that accepts a standard key, providing a positive mechanical connection for higher-torque drives where set screws alone may slip.

How do I select the right bore size?

Measure your motor or drive shaft diameter with a caliper. Select the bore that matches exactly — for example, a NEMA 17 stepper typically has a 5 mm shaft, while NEMA 23 steppers commonly use 6.35 mm (1/4 in) or 8 mm shafts. If your shaft has a keyway, choose a bore variant that includes the matching keyway dimension (e.g., 8 mm with 3×1.4 mm keyway).

Which belt width should I choose — 15 mm, 20 mm, or 26 mm?

The belt width must match the pulley's flange width. Wider belts (20 mm, 26 mm) carry higher loads and are less prone to tracking off the pulley under lateral forces. For standard desktop CNC and 3D printers, 15 mm or 20 mm wide 5M belts are most common. Check your existing belt width and select the matching pulley option.

Are these pulleys compatible with GT2 or HTD belts?

No. These pulleys are designed specifically for 5M (5 mm pitch) synchronous timing belts. GT2 belts use a 2 mm pitch and HTD belts use a different tooth profile. Using a mismatched belt and pulley will result in poor engagement, noise, and premature wear. Always pair 5M pulleys with 5M belts.

Will the aluminum construction hold up in a workshop environment?

Aluminum alloy is well-suited for indoor automation and light industrial environments. It resists corrosion under normal workshop conditions. For applications involving exposure to cutting fluids, moisture, or outdoor environments, consider applying a protective coating or selecting a stainless steel alternative. These pulleys are not rated for submerged or highly corrosive environments.

Can I use these pulleys on both the drive (motor) shaft and the idler/driven shaft?

Yes. The same pulley can be used on either the motor shaft or the driven shaft. When used as an idler, ensure the bore is fitted with a bearing or bushing appropriate for your shaft. For driven shafts requiring torque transmission, the K-Type (keyway) variant is recommended for secure engagement.

🛒 Select your Model/Type, Bore, and Belt Width above, then add to cart.

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