HTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mm
HTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mm
HTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mm
HTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mm
HTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mm
HTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mm
HTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mm
HTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mm
Roll over image to zoom in Click on image to zoom
HTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mmHTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mmHTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mmHTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mmHTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mmHTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mmHTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mmHTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mm

HTD-3M 17T-80T Timing Belt Pulley Pitch 3mm AF-type With Keyway Wheel Width 16mm

HomeDIYer
No reviews

By HomeDIYer®

Price:
$5.24 USD
Stock:
In stock (500 units), ready to be shipped

Payment & Security

Ach Direct Debit Amazon American Express Apple Pay Bancontact BLIK Diners Club Discover EPS Google Pay iDEAL Wero JCB Maestro Mastercard Multibanco MobilePay PayPal Przelewy24 Shop Pay Twint Union Pay USDC Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Limited Offer — Spend More, Save More
Spend $55+
Save $5
Spend $100+
Save $10
Spend $200+
Save $25
✅ Discount applied automatically at checkout 🚚 Free shipping on orders over $89
HomeDIYer DIY Expert Support

DIY Expert Support

Get fitment advice & recommendations

Mon–Fri  8:30 AM – 8:00 PM
WhatsApp
24-Hour Fast Ship
Arrives in 3–14 Days
Worldwide Shipping
30-Day Returns
1 tree planted with every purchase

Description

HTD 3M Timing Belt Pulley — Precise Power Transmission for CNC, Robotics & Automation

When your motion system demands repeatable, slip-free torque transfer, a mismatched or worn pulley becomes the weakest link in the chain. Engineers, makers, and machine builders working on CNC routers, 3D printers, robotic arms, and conveyor systems need an HTD 3M timing belt pulley they can spec with confidence — one that fits the shaft, accepts the keyway, and runs true under load.

This HTD-3M timing belt pulley features a 3mm pitch HTD tooth profile machined into an aluminum alloy body, with a fixed 16mm belt-contact width (AF-type flange configuration). Tooth counts span 17T through 80T, covering pitch diameters from approximately 16.2mm (0.64 in) at 17T up to approximately 76.4mm (3.01 in) at 80T. Bore options range from 8mm to 25mm, each pre-machined with a standard metric keyway (3×1.4mm, 4×1.8mm, 5×2.3mm, 6×2.8mm, or 8×3.3mm depending on bore size) to lock the pulley firmly to the shaft.

Typical use cases include CNC router X/Y axis drives requiring low-backlash HTD 3M pulley sets, desktop 3D printer extruder and motion systems using 3mm pitch timing pulleys with keyway, and light industrial conveyor or indexing table builds where a keyed aluminum timing pulley with 16mm belt width keeps alignment consistent across long production runs.

⚙️ Compatible with: HTD 3M timing belts (3mm pitch, belt width up to 15mm). Verify bore diameter and keyway dimensions match your shaft before ordering.

✅ Key Features of These HTD 3M Timing Belt Pulleys

🦷 3mm HTD Tooth Profile

The rounded HTD tooth form distributes belt load across a larger contact area than trapezoidal profiles, reducing tooth stress and extending belt life in continuous-duty drives.

📐 Wide Tooth Count Range: 17T – 80T

Select the exact gear ratio your drive requires. Spanning 17 to 80 teeth in a single product family lets you pair driver and driven pulleys without sourcing from multiple suppliers.

🔩 Pre-Machined Keyway (AF-Type)

Each pulley ships with a keyway already cut to the bore-appropriate metric standard (3×1.4mm through 8×3.3mm), eliminating secondary machining and ensuring positive rotational lock on the shaft.

🎯 Multiple Bore Options: 8mm – 25mm

Bore sizes from 8mm to 25mm cover the most common stepper motor, servo motor, and gearbox output shaft diameters used in CNC and automation builds.

⚖️ Aluminum Alloy Construction

Lightweight aluminum keeps rotating inertia low — an advantage in high-acceleration servo and stepper applications — while providing sufficient strength for typical belt tension loads.

📏 Fixed 16mm Belt Width (AF Flange)

The AF-type flange configuration holds the belt on track laterally without additional guides, simplifying installation on open-frame CNC and robotics platforms.

📐 Technical Specifications — HTD 3M Timing Belt Pulley

Tooth Profile HTD (High Torque Drive)
Pitch 3mm
Tooth Count (Models) 17T – 80T (36 sizes available)
Belt Width / Wheel Width 16mm (0.63 in)
Flange Type AF-type (flanged both sides)
Bore Diameter Options 8mm, 10mm, 12mm, 12.7mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 25mm
Keyway Dimensions 3×1.4mm / 4×1.8mm / 5×2.3mm / 6×2.8mm / 8×3.3mm (varies by bore)
Material Aluminum alloy
Pitch Diameter Range Approx. 16.2mm – 76.4mm (0.64 in – 3.01 in)
Quantity per Order 1 piece
Compatible Belt HTD 3M timing belt

❓ Frequently Asked Questions

How do I choose the right tooth count for my drive?

Determine your required speed ratio by dividing the driver tooth count by the driven tooth count. For example, a 20T driver paired with a 40T driven pulley gives a 2:1 reduction. Choose tooth counts that achieve your target ratio while keeping the center distance between shafts practical for your build. Larger tooth counts produce larger pitch diameters and smoother belt engagement at higher speeds.

Which bore size should I select for my stepper or servo motor shaft?

Match the bore to your motor or gearbox output shaft diameter. Common NEMA 23 steppers use 6.35mm or 8mm shafts; NEMA 34 and servo motors typically use 10–25mm shafts. Always measure your shaft with calipers before ordering to confirm the correct bore.

What keyway size comes with each bore?

The keyway is matched to the bore size per standard metric conventions: 8–10mm bore → 3×1.4mm keyway; 12–12.7mm bore → 4×1.8mm or 5×2.3mm; 14–17mm bore → 5×2.3mm; 18–20mm bore → 6×2.8mm; 25mm bore → 8×3.3mm. The exact keyway for each variant is shown in the Keyway & Amount selector above.

Is this pulley compatible with standard HTD 3M timing belts?

Yes. This pulley is designed for HTD 3M timing belts with a 3mm pitch. The 16mm wheel width accommodates belts up to 15mm wide (with flange clearance). Confirm your belt width is 15mm or less for proper tracking within the AF-type flanges.

How strong is an aluminum timing pulley compared to steel?

Aluminum alloy pulleys are well-suited for light-to-medium duty CNC, 3D printing, and robotics applications where belt tension is moderate. For heavy industrial drives with sustained high tension or shock loads, steel pulleys are typically recommended. For most maker and automation builds running HTD 3M belts, aluminum provides an adequate strength-to-weight ratio.

Does the pulley require a set screw in addition to the keyway?

The AF-type pulley is designed to be secured primarily via the keyway and a mating key inserted between the shaft and pulley bore. Many builders also add a set screw over the keyway for additional axial retention — check whether your pulley variant includes a tapped set screw hole, or plan to add one if needed for your application.

Can I use this pulley in a corrosive or outdoor environment?

Bare aluminum alloy offers moderate natural oxidation resistance but is not rated for prolonged exposure to salt spray, acids, or high-humidity outdoor environments without additional surface treatment such as anodizing or painting. For indoor CNC, robotics, and automation environments, bare aluminum performs reliably over extended service life.

🛒 Select your Model (tooth count), Bore diameter, and Keyway & Amount above, then add to cart.

 

You may also like

Recently viewed