XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt
Roll over image to zoom in Click on image to zoom
XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width BeltXL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt

XL10T-35T Timing Belt Pulley With Step, Bore 3.175mm-25mm For 10/15mm Width Belt

HomeDIYer
No reviews

By HomeDIYer®

Price:
$3.29 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

XL Timing Belt Pulley with Step Bore — Precision 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 loose or mismatched pulley bore. Makers, hobbyists, and small-workshop engineers who need a reliable, drop-in XL timing belt pulley with a stepped bore will find this series covers the widest range of shaft sizes in one listing — eliminating the frustration of ordering the wrong bore diameter.

Each pulley is machined from aluminum alloy and features a stepped (through-hole) bore ranging from 3.175 mm (~0.125 in) up to 25 mm (~0.984 in), with tooth counts from 10T to 35T. The tooth width is available in 11 mm or 16 mm to match standard XL-series belts of 10 mm or 15 mm width respectively. Two hub styles are offered: BF-Type (flanged, with set-screw collar) and K-Type (extended hub, with set-screw collar), giving you flexibility for both compact and shaft-extended installations.

Typical use cases include open-loop stepper motor drives on desktop CNC mills, X/Y axis drives on CoreXY 3D printers, linear actuator lead-screw coupling on DIY laser engravers, and light-duty conveyor indexing in educational robotics labs — anywhere an XL-pitch (5.08 mm / 0.200 in) synchronous drive is required.

⚙️ Compatibility: Fits standard XL-series timing belts (5.08 mm pitch). 11 mm tooth-width variants suit 10 mm wide belts; 16 mm tooth-width variants suit 15 mm wide belts. Verify your shaft diameter against the bore options before ordering.

✅ Key Features of These XL Timing Belt Pulleys

🔩
Wide Tooth Count Range

Available from 10T to 35T, covering a broad gear-ratio range for speed reduction or torque multiplication in XL-pitch synchronous drives.

📐
Stepped Through-Bore Design

Bore sizes span 3.175 mm to 25 mm (approx. 0.125 in to 0.984 in), accommodating stepper motor shafts, servo shafts, and standard metric/imperial rod diameters.

🏗️
BF-Type & K-Type Hub Options

BF-Type offers a flanged collar for compact axial retention; K-Type provides an extended hub for deeper shaft engagement — choose the style that fits your assembly.

📏
Dual Belt-Width Support

11 mm tooth-width pulleys pair with 10 mm XL belts; 16 mm tooth-width pulleys pair with 15 mm XL belts — both standard widths stocked in this listing.

⚡
Set-Screw Locking

Each hub includes a radial set-screw for positive shaft locking, preventing slippage under dynamic loads typical of CNC and 3D-printer duty cycles.

🔄
Aluminum Alloy Construction

Lightweight yet rigid aluminum alloy body keeps rotational inertia low — critical for responsive acceleration in motion-control applications.

📐 Technical Specifications — XL Timing Belt Pulleys

Belt Pitch XL — 5.08 mm (0.200 in)
Tooth Count 10T, 12T, 14T, 15T, 16T, 17T, 18T, 19T, 20T, 22T, 24T, 25T, 26T, 28T, 30T, 32T, 35T
Tooth Width 11 mm (for 10 mm belt) / 16 mm (for 15 mm belt)
Bore Range 3.175 mm – 25 mm (approx. 0.125 in – 0.984 in)
Hub Style BF-Type (flanged) / K-Type (extended hub)
Material Aluminum alloy
Locking Method Radial set-screw
Outer Diameter See variant options
Hub Length See variant options
Compatible Belt Width 10 mm (11 mm tooth width) / 15 mm (16 mm tooth width)

❓ Frequently Asked Questions

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

The tooth count determines your drive ratio. Divide the driven pulley teeth by the driving pulley teeth to get the ratio. For example, a 20T driver paired with a 40T driven pulley gives a 2:1 reduction. For CNC and 3D printers, 16T–20T on the motor is a common starting point. Select your tooth count from the "Types & Shape" option above.

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

BF-Type (flanged) has a shorter hub with a flange on one side to retain the belt axially — ideal for compact assemblies where axial space is limited. K-Type has an extended hub that provides more shaft engagement depth, which is useful when you need extra grip on longer shafts or when the pulley sits further from a bearing. Both types use a set-screw for shaft locking.

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

Standard NEMA 17 stepper motors have a 5 mm output shaft. Select the "5mm" bore option in the "Bore & Amount" dropdown. If your motor has a D-cut shaft, the set-screw will engage the flat for a secure fit. Always measure your shaft diameter with calipers before ordering to confirm.

Are these pulleys compatible with GT2 or HTD belts?

No. These pulleys are designed exclusively for XL-pitch timing belts with a 5.08 mm (0.200 in) tooth pitch. GT2 belts use a 2 mm pitch and HTD belts use a different tooth profile — they are not interchangeable. Ensure your belt is labeled "XL" before purchasing.

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

The radial set-screw provides adequate holding force for typical light-to-medium duty CNC and 3D-printer loads. For higher-torque applications, consider applying a small amount of thread-locking compound to the set-screw and ensuring the flat (D-cut) on the shaft aligns with the screw. For heavy industrial loads, a keyed shaft and keyway pulley would be more appropriate.

Can I use the 11 mm tooth-width pulley with a 15 mm wide belt?

It is not recommended. The 11 mm tooth-width pulley is designed for 10 mm wide XL belts. Using a wider belt will cause the belt to overhang the pulley flanges, leading to uneven wear and potential belt tracking issues. Select the 16 mm tooth-width variant when using 15 mm wide belts.

What is the outer diameter of a specific tooth count?

The outer diameter (pitch diameter) of an XL pulley is calculated as: OD = (Tooth Count × Pitch) / π. For example, a 20T XL pulley has a pitch diameter of approximately 32.3 mm (~1.27 in). Exact outer diameters vary slightly by hub style. Contact us to confirm dimensions for your specific variant if needed.

🛒 Select your tooth count, tooth width, and bore size above, then add to cart.

You may also like

Recently viewed