HTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC Drive
HTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC Drive
HTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC Drive
HTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC Drive
HTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC Drive
HTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC Drive
HTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC Drive
HTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC Drive
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HTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC DriveHTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC DriveHTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC DriveHTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC DriveHTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC DriveHTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC DriveHTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC DriveHTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC Drive

HTD-3M 48T-150T Timing Belt Pulley Pitch 3mm BF Width 16mm 3D Printer CNC Drive

HomeDIYer
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By HomeDIYer®

Price:
$8.21 USD
Stock:
In stock (500 units), ready to be shipped

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Description

HTD-3M Timing Belt Pulley — Precision Drive for 3D Printers, CNC & Automation

When your motion system demands repeatable, slip-free power transfer, a worn or mismatched pulley is the first thing that kills accuracy. Engineers, makers, and machine builders who rely on 3D printers, CNC routers, or custom automation rigs need an HTD-3M timing belt pulley that holds tight tolerances across thousands of cycles — without wobble, without slop.

These HTD-3M timing belt pulleys feature a 3 mm pitch HTD tooth profile and a 16 mm belt width (BF type, flanged on both sides). The aluminum alloy body is finished with a black anodized surface for corrosion resistance. Tooth counts range from 48T to 150T, with bore options from 5 mm (≈0.197 in) to 25 mm (≈0.984 in) to suit a wide range of shaft diameters. A set-screw keyway bore is standard across the range.

Typical use cases include X/Y axis drives on FDM 3D printers requiring consistent layer registration, Z-axis or gantry drives on desktop CNC routers needing low-backlash motion, and custom conveyor or pick-and-place automation systems where synchronous belt drive is preferred over chain or friction-based solutions.

⚙️ Compatible with standard HTD-3M timing belts, 15 mm or 16 mm wide. Verify shaft diameter before ordering — bore sizes range from 5 mm to 25 mm.

✅ Key Features of These HTD-3M Timing Belt Pulleys

🦷 Wide Tooth Count Range

Available from 48T to 150T, covering low-speed high-torque and high-speed positioning applications in a single product family.

📐 3 mm HTD Pitch Profile

The HTD (High Torque Drive) tooth form provides deeper engagement with the belt than trapezoidal profiles, reducing tooth jump under load.

🔩 Multi-Bore Options

Bore sizes from 5 mm to 25 mm (including 6.35 mm and 12.7 mm inch-standard sizes) accommodate stepper motor shafts, servo shafts, and custom drive shafts.

🛡️ Flanged BF Design

Dual flanges on both sides of the pulley keep the belt tracking centered, reducing edge wear and preventing belt walk during continuous operation.

⚫ Anodized Aluminum Body

Lightweight aluminum construction with black anodized finish resists oxidation and surface wear, keeping weight low in moving-gantry systems.

🔧 Set-Screw Keyway Bore

Standard set-screw bore allows tool-free shaft alignment and secure locking without requiring a keyed shaft — compatible with most stepper and BLDC motor shafts.

📐 Technical Specifications — HTD-3M Timing Belt Pulley

Belt Pitch 3 mm (HTD-3M)
Tooth Profile HTD (High Torque Drive), curvilinear
Belt Width (BF) 16 mm
Flange Type BF — flanged both sides
Number of Teeth 48T, 50T, 52T, 54T, 56T, 58T, 60T, 65T, 70T, 72T, 75T, 80T, 90T, 100T, 120T, 140T, 150T
Bore Diameter 5, 6, 6.35, 8, 10, 12, 12.7, 14, 15, 16, 17, 18, 19, 20, 22, 24, 25 mm (see variant options)
Material Aluminum alloy
Surface Finish Black anodized
Bore Fixing Set-screw keyway
Hub Width See variant options
Outer Diameter See variant options (varies by tooth count)
Compatible Belt HTD-3M, 15 mm or 16 mm wide

❓ Frequently Asked Questions

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

Tooth count determines the pitch diameter and gear ratio of your drive system. A smaller pulley (e.g., 48T) on the motor paired with a larger pulley on the driven shaft creates a speed reduction and torque multiplication. For 3D printer X/Y axes, 20T–60T driver pulleys are common; this product covers the larger driven-pulley side of such systems. Match the tooth count to your required belt loop length and center distance.

What bore size should I select for a NEMA 17 stepper motor shaft?

NEMA 17 stepper motors typically have a 5 mm output shaft. Select the 5 mm bore variant. If your motor has a D-cut shaft, ensure the set-screw engages the flat. For NEMA 23 motors, the shaft is commonly 6.35 mm (1/4 in) or 8 mm — select accordingly.

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

Yes. These pulleys are designed for HTD-3M belts with a 3 mm pitch and curvilinear tooth profile. The BF (flanged both sides) design accommodates belts up to 16 mm wide. Do not use with MXL, GT2, or trapezoidal T3 belts — the tooth profiles are not interchangeable.

How strong is the set-screw bore connection? Will it slip under load?

The set-screw bore provides adequate holding force for typical 3D printer and light CNC loads. For higher-torque applications, ensure the set-screw is tightened against a flat on the shaft (D-cut) rather than a round shaft surface. For heavy industrial loads, consider a keyed shaft and keyway bore variant or a clamping-style hub.

Will the anodized finish resist corrosion in humid or outdoor environments?

Black anodizing provides a hard oxide layer that resists oxidation and mild chemical exposure significantly better than bare aluminum. For indoor CNC and 3D printing environments, the finish is fully adequate. For outdoor or high-humidity industrial environments, additional protective measures (such as periodic lubrication of the bore area) are recommended.

Can I use this pulley on both the driver and driven side of a belt drive?

Yes. The pulley can be used on either the motor (driver) or load (driven) shaft. The flanged BF design keeps the belt centered regardless of which side it is mounted on. For typical motion systems, a smaller tooth count is used on the motor shaft and a larger tooth count on the driven shaft to achieve the desired speed/torque ratio.

What is the outer diameter for a specific tooth count?

The outer diameter (OD) of an HTD-3M pulley is calculated as: OD = (Teeth × Pitch) / π + 2 × addendum. For example, a 60T pulley has a pitch diameter of approximately 57.3 mm and an OD of approximately 58.7 mm. Exact OD values vary slightly by manufacturer tolerance — contact us to confirm if your design has tight clearance constraints.

🛒 Select your Number of Teeth and Bore above, then add to cart.

 

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