HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer
Roll over image to zoom in Click on image to zoom
HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D PrinterHTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer

HTD 3M Timing Belt Pulley, for 15mm Wide, Bore 4-25mm, 12-120T, CNC, 3D Printer

HomeDIYer
No reviews

By HomeDIYer®

Price:
$3.93 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 Drive for CNC, 3D Printers & DIY Automation

When your CNC router skips steps or your 3D printer loses position mid-print, the culprit is often a mismatched or poorly machined pulley. Makers, engineers, and workshop builders who demand repeatable, slip-free motion need a pulley that holds tight tolerances and fits their exact shaft. This HTD 3M timing belt pulley is engineered for that purpose.

Each pulley is machined to accept HTD 3M profile belts with a 15 mm belt width. Bore options span 4 mm through 25 mm (approximately 0.16 in – 0.98 in), and tooth counts range from 12T to 120T, covering pitch diameters from roughly 11.5 mm to 114.6 mm (0.45 in – 4.51 in). The set-screw hub locks the pulley firmly to the shaft without requiring a keyway.

Typical applications include CNC router X/Y/Z axes requiring low-backlash synchronous drive, FDM 3D printer extruder and motion systems, desktop laser engravers, pick-and-place machines, and custom DIY automation rigs where belt-driven linear motion is preferred over lead screws.

⚙️ Compatible Belt: HTD 3M profile (3 mm pitch) — 15 mm wide. Not compatible with GT2, T5, or other belt profiles.

✅ Key Features of These HTD 3M Timing Belt Pulleys

  • 🔩Wide Bore Range — Available in 4, 5, 6, 6.35, 7, 8, 10, 11, 12, 12.7, 14, 15, 16, 17, 19, 20, 22, 25, and 40 mm bore sizes to match common motor and shaft diameters.
  • 🦷Extensive Tooth Count Selection — 12T through 120T in a single product family, letting you dial in the exact gear ratio your drive system requires.
  • 📐HTD 3M Profile Tooth Form — The curved HTD tooth profile distributes load across a larger contact area than trapezoidal profiles, reducing tooth shear stress under dynamic loads.
  • 🔧Set-Screw Hub Retention — Integrated set-screw hub clamps directly to the shaft for tool-free repositioning and secure axial locking without keyway machining.
  • 🖨️CNC & 3D Printer Ready — Tooth pitch and flange geometry are sized for standard 15 mm HTD 3M belts used in open-loop and closed-loop motion systems.
  • 📦Sold Individually — Each listing is for one pulley. Select your model (tooth count) and bore size from the variant dropdowns above.

📐 Technical Specifications — HTD 3M Timing Belt Pulley

Belt Profile HTD 3M (3 mm pitch, curved tooth)
Belt Width Compatibility 15 mm
Tooth Count Range 12T – 120T (see variant options)
Bore Diameter Range 4 mm – 25 mm (see variant options)
Pitch Diameter Range Approx. 11.5 mm – 114.6 mm (varies by tooth count)
Hub Retention Set screw
Flange See variant options
Material See variant options
Finish See variant options
Quantity per Order 1 piece

❓ Frequently Asked Questions

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

The tooth count determines the pulley's pitch diameter and, combined with the tooth count of the mating pulley, sets your drive ratio. For CNC and 3D printer motion systems, common choices are 20T on the motor and a larger pulley on the driven axis. Use the formula: Pitch Diameter = (Tooth Count × Pitch) ÷ π. For HTD 3M, pitch = 3 mm. A 20T pulley has a pitch diameter of approximately 19.1 mm.

What bore size should I select for my stepper motor shaft?

NEMA 17 stepper motors typically have a 5 mm shaft, so the 5 mm bore variant is the most common choice for 3D printers and small CNC machines. NEMA 23 motors commonly use 6.35 mm (1/4 in) or 8 mm shafts. Servo motors and larger drives may use 10 mm, 12 mm, or larger shafts. Always measure your shaft diameter with calipers before ordering.

Is this pulley compatible with GT2 or T5 belts?

No. This pulley is designed exclusively for HTD 3M profile belts with a 3 mm pitch and curved tooth form. GT2 belts use a 2 mm pitch and a different tooth geometry. T5 belts use a 5 mm pitch trapezoidal profile. Mixing belt profiles and pulleys will result in poor engagement, noise, and premature wear. Confirm your belt is labeled HTD 3M before purchasing.

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

The set screw provides adequate retention for typical CNC and 3D printer torque levels. For higher-torque applications, ensure the screw is tightened against a flat on the shaft (D-shaft) rather than a round shaft, which significantly increases holding force. If your application involves high shock loads or reversing torque, consider adding a second set screw at 90° or using a shaft with a keyway.

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

Corrosion resistance depends on the specific material and finish of the variant you select. Contact us to confirm the material specification for your chosen variant before deploying in wet, humid, or chemically exposed environments. For outdoor or washdown applications, additional protective coatings or stainless steel alternatives may be advisable.

How do I calculate the center distance between two pulleys?

The center distance C between two pulleys can be estimated using: C ≈ (L − π(D1 + D2)/2) / 2, where L is the belt length, D1 and D2 are the pitch diameters of the two pulleys. For HTD 3M, pitch diameter = (Tooth Count × 3) ÷ π. Most belt drive design calculators available online can automate this calculation once you input tooth counts and desired belt length.

Do I need to buy the belt separately?

Yes. This listing is for the pulley only. HTD 3M belts with 15 mm width are sold separately. When selecting a belt, ensure it matches the HTD 3M profile and 15 mm width. Belt length should be calculated based on your center distance and pulley pitch diameters.

🛒 Select your Model (tooth count) and Bore & Applicable Belt Width above, then add to cart.

 

You may also like

Recently viewed