L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm
Roll over image to zoom in Click on image to zoom
L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mmL-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm

L-type 10T-30T Timing Belt Pulley Pitch 9.525mm With Keyway 45# Steel Width 21mm

HomeDIYer
No reviews

By HomeDIYer®

Price:
$15.42 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

L-Type Timing Belt Pulley 9.525mm Pitch — Precision Drive for CNC, Robotics & Automation

When your CNC router, 3D printer, or automation rig demands repeatable, slip-free motion, a mismatched or worn pulley becomes the weakest link in the entire drive train. Engineers and makers who need consistent tooth engagement and zero-backlash performance rely on L-type timing belt pulleys machined to tight tolerances — not generic hardware-store substitutes.

This L-type timing belt pulley is machined from 45# carbon steel and features a standard 9.525mm (3/8 in) pitch profile. The hub width is 21mm (0.83 in), and bore options range from 8mm to 28mm (0.31–1.10 in) to suit a wide range of shaft diameters. Each pulley ships with a matching keyway slot — available in 3×1.4mm, 4×1.8mm, 5×2.3mm, 6×2.8mm, or 8×3.3mm — for positive torque transmission without set-screw slippage.

Typical use cases include CNC router X/Y axis drives requiring L-type timing belt pulleys with keyway for rigid shaft coupling, desktop laser engraver feed systems where 9.525mm pitch pulleys maintain consistent step accuracy, and light industrial conveyor or pick-and-place automation where 45# steel pulleys outlast aluminum alternatives under continuous duty cycles.

⚙️ Compatibility: Fits standard L-type (3/8 in pitch) timing belts. Verify bore diameter and keyway dimensions match your shaft before ordering.

✅ Key Features of These L-Type Timing Belt Pulleys

🔩
45# Carbon Steel Construction
Machined from medium-carbon 45# steel for reliable strength and wear resistance under continuous rotational loads.
📐
Standard 9.525mm (3/8 in) L-Type Pitch
Matches all standard L-type timing belts for direct drop-in compatibility across common drive systems.
🎯
Wide Tooth Count Range: 10T–30T
Fifteen tooth-count options (L10T through L30T) let you dial in the exact gear ratio your application requires.
🔑
Precision-Cut Keyway Slot
Keyway options from 3×1.4mm to 8×3.3mm ensure positive torque coupling to the shaft — no slipping under load.
📏
Multiple Bore Sizes: 8mm–28mm
Bore diameters from 8mm to 28mm (0.31–1.10 in) accommodate stepper motor shafts, servo shafts, and custom drive shafts.
🏭
21mm Hub Width
The 21mm (0.83 in) belt-contact width provides stable belt tracking and reduces edge wear on the belt.

📐 Technical Specifications — L-Type Timing Belt Pulley

Belt Type L-Type (3/8 in pitch)
Pitch 9.525mm (0.375 in)
Number of Teeth 10T, 12T, 14T, 15T, 16T, 17T, 18T, 19T, 20T, 22T, 24T, 25T, 26T, 28T, 30T
Hub Width 21mm (0.83 in)
Bore Diameter 8mm, 10mm, 12mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 22mm, 24mm, 25mm, 28mm
Keyway Options 3×1.4mm, 4×1.8mm, 5×2.3mm, 6×2.8mm, 8×3.3mm
Material 45# Carbon Steel
Outer Diameter See variant options
Flange See variant options
Quantity per Order 1 piece

❓ Frequently Asked Questions

How do I choose the right number of teeth for my application?

The tooth count determines your drive ratio. Divide the driven pulley's tooth count by the driving pulley's tooth count to get the ratio. For example, a 20T driver paired with a 10T driven pulley gives a 2:1 speed increase. Match the tooth count to your required RPM and torque output — higher tooth counts on the driver reduce output speed but increase torque.

What bore size should I select for my motor shaft?

Measure your motor or drive shaft diameter precisely with calipers. Select the bore that matches your shaft diameter exactly — a loose bore causes runout and vibration, while an undersized bore cannot be installed. Available bores range from 8mm to 28mm. If your shaft is imperial (e.g., 1/2 in = 12.7mm), choose the nearest metric bore and use a precision sleeve or reamer if needed.

What keyway size should I use?

The keyway must match the key slot already cut into your shaft. Standard DIN 6885 keyway dimensions are typically paired with specific shaft diameters: 3×1.4mm for shafts up to ~10mm, 4×1.8mm for ~10–12mm shafts, 5×2.3mm for ~14–22mm shafts, 6×2.8mm for ~18–28mm shafts, and 8×3.3mm for larger shafts. Confirm your shaft's existing keyway dimensions before ordering.

Is 45# steel strong enough for my application?

45# carbon steel (equivalent to AISI 1045) offers a tensile strength of approximately 600–800 MPa in its normalized state, making it well-suited for moderate-to-heavy duty timing drive applications including CNC routers, laser cutters, and light industrial automation. For extremely high-speed or corrosive environments, consider whether a surface treatment or alternative material is required for your specific conditions.

Will this pulley resist corrosion?

45# carbon steel is not inherently corrosion-resistant. For indoor, dry environments such as CNC workshops or electronics labs, bare steel performs well with minimal maintenance. If your application involves moisture, coolant mist, or outdoor exposure, apply a light machine oil coating periodically or consider using a pulley with a surface treatment. Contact us if you need guidance on your specific environment.

Is this pulley compatible with my existing L-type timing belt?

Yes — this pulley is designed for standard L-type (3/8 in pitch, 9.525mm) timing belts. It is compatible with open-ended and closed-loop L-type belts from all major belt manufacturers. Verify that your belt width does not exceed the 21mm hub width of this pulley to ensure proper belt tracking.

Can I use this pulley without a keyway (smooth bore)?

All variants in this listing include a keyway slot. If you require a smooth bore (no keyway), please contact us before ordering. For set-screw-only retention, the keyway slot does not interfere — simply omit the key and tighten the set screw directly against the shaft, though this is not recommended for high-torque applications.

How do I decide between a smaller or larger tooth count pulley?

Smaller tooth counts (e.g., L10T, L12T) produce a smaller pitch diameter, which is useful when space is limited or when you need a high reduction ratio with a larger driven pulley. Larger tooth counts (e.g., L28T, L30T) distribute belt load across more teeth, reducing tooth stress and extending belt life — ideal for high-torque, lower-speed applications. Choose based on your center distance, belt length, and required drive ratio.

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

 

You may also like

Recently viewed