3M Führungsrolle ohne Zähne 5-60z Riemenscheibe Pulley für 3D Drucker CNC RepRap

Roll over image to zoom in Click on image to zoom

3M Führungsrolle ohne Zähne 5-60z Riemenscheibe Pulley für 3D Drucker CNC RepRap

Name: 3M Führungsrolle ohne Zähne 5-60z Riemenscheibe Pulley für 3D Drucker CNC RepRap
Brand: HomeDIYer
Price: 3.66 USD
Availability: InStock

HomeDIYer

No reviews

By HomeDIYer®

Modell: 3M-15T

Schlitzbreite: 16mm

Bohrung & Typus: 3mm & Keine Zähne Kugellager*2

Price:

$3.66 USD

Stock:

In stock (500 units), ready to be shipped

Quantity:

Share this product

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

DIY Expert Support

Get fitment advice & recommendations

Mon–Fri 8:30 AM – 8:00 PM

WhatsApp Email Us

24-Hour Fast Ship

Arrives in 3–14 Days

Worldwide Shipping

30-Day Returns

1 tree planted with every purchase

3M Timing Belt Idler Pulley — Smooth, Reliable Tension Control for 3D Printers & CNC Machines

When your 3D printer or CNC router loses belt tension mid-print, the results are costly: layer shifts, missed steps, and wasted material. Makers, hobbyists, and small workshop operators who rely on precise motion control need idler pulleys that hold tension consistently without adding unwanted backlash. These 3M pitch idler pulleys — available in both toothless and toothed configurations — are engineered to keep your timing belt tracking true across the full range of your build.

Each 3M idler pulley is machined to accept a 3M (3mm pitch) timing belt with a 16mm slot width. The bore diameter ranges from 3mm to 15mm (approximately 0.12 in to 0.59 in), and tooth counts span from 15T to 60T (outer diameter approximately 14.3mm to 57.3mm / 0.56 in to 2.26 in). Every unit ships with 2 pre-installed ball bearings for smooth, low-friction rotation. Toothless variants act as smooth guide rollers; toothed variants engage the belt for positive tensioning.

These idler pulleys are widely used in CoreXY 3D printer builds requiring smooth belt redirection, CNC router gantry tensioning systems, and RepRap-style motion platforms where precise 3M belt routing is critical. They are also suitable for light automation conveyor tensioning and educational robotics projects that demand repeatable, low-maintenance belt drive performance.

⚙️ Compatibility: Designed for 3M pitch (3mm) timing belts with 16mm width. Bore sizes from 3mm to 15mm. Verify your shaft diameter and belt width before ordering.

✅ Key Features of These 3M Timing Belt Idler Pulleys

🔩 Dual Ball Bearings Included

Each pulley ships with 2 pre-installed ball bearings, delivering smooth, low-friction rotation and extended service life without additional hardware.

📐 Wide Model Range: 15T to 60T

Thirteen tooth-count options (15T, 16T, 18T, 20T, 24T, 25T, 30T, 32T, 35T, 36T, 40T, 50T, 60T) let you match the exact geometry your motion system requires.

🕳️ Multiple Bore Sizes: 3mm–15mm

Bore options from 3mm to 15mm accommodate a broad range of shaft diameters found in 3D printer, CNC, and RepRap builds.

⚡ Toothless & Toothed Variants

Choose toothless (smooth) for passive belt redirection or toothed for positive belt engagement — both configurations available across the full model range.

📏 16mm Belt Width Slot

The 16mm slot width is compatible with standard 3M timing belts used in most desktop CNC routers, CoreXY printers, and RepRap-derived motion systems.

🔄 Drop-In Replacement Design

Dimensionally consistent across the range, these pulleys are straightforward to swap into existing belt drive assemblies with minimal adjustment required.

📐 Technical Specifications — 3M Idler Timing Belt Pulleys

Belt Pitch	3M (3mm)
Slot Width	16mm
Tooth Count (Model)	15T, 16T, 18T, 20T, 24T, 25T, 30T, 32T, 35T, 36T, 40T, 50T, 60T
Bore Diameter	3mm / 4mm / 5mm / 6mm / 7mm / 8mm / 9mm / 10mm / 12mm / 15mm
Bearing Quantity	2 ball bearings (pre-installed)
Pulley Type	Toothless (smooth) or Toothed — see variant options
Outer Diameter	See variant options
Material	See variant options
Weight	See variant options
Application	3D printers, CNC routers, RepRap, automation belt drives

❓ Frequently Asked Questions

How do I choose the right tooth count (model) for my build?

The tooth count determines the outer diameter of the pulley. Larger tooth counts produce larger-diameter pulleys, which affect belt wrap angle and tension geometry. Match the tooth count to your existing idler position or the geometry specified in your printer or CNC design files. If you are replacing an existing idler, measure the outer diameter of the current pulley and select the closest matching model.

What bore size should I select?

Select the bore diameter that matches your shaft or axle diameter. Common sizes for 3D printers and CNC machines are 3mm, 5mm, and 8mm. Measure your shaft with calipers before ordering. A bore that is too large will result in wobble; a bore that is too small will not fit.

What is the difference between toothless and toothed variants?

Toothless (smooth) pulleys act as passive guide rollers — the belt slides over the smooth surface, redirecting its path without engaging the teeth. Toothed pulleys mesh with the belt's tooth profile, providing positive engagement and preventing belt slip. Use toothless for tensioning and redirection, and toothed where you need the belt to be positively driven or locked in position.

Are the ball bearings replaceable or pre-installed?

The 2 ball bearings are pre-installed in each pulley. Standard-sized bearings are used, so they can typically be replaced with off-the-shelf bearings of the matching inner diameter, outer diameter, and width if needed after extended use.

Will these pulleys fit my CoreXY or Cartesian 3D printer?

These pulleys are designed for 3M pitch (3mm) timing belts with a 16mm width. Verify that your printer uses 3M belts and that the bore size matches your idler shaft. Many CoreXY designs use 3M belts, but always confirm your specific printer's BOM or design files before purchasing.

How do I know if the pulley will handle my application's load?

These pulleys are suited for light-to-medium duty applications such as desktop 3D printers, small CNC routers, and RepRap-style machines. For heavy industrial belt drives or high-speed applications, consult the load ratings of the specific bearing size used. If you are unsure, contact us to confirm suitability for your use case.

Can I use these pulleys with belts other than 3M pitch?

No. These pulleys are specifically designed for 3M pitch (3mm tooth pitch) timing belts. Using them with GT2, HTD5M, or other pitch belts will result in poor engagement, belt damage, or slippage. Always match the pulley pitch to your belt pitch.

🛒 Select your Model (tooth count), Bore & Type above, then add to cart.

91%

(1772)

(128)

(21)

(5)

(17)

283

These o rings are a great for my ear tunnels

These o rings are a great for my ear tunnels, always loosing one here and there, I always have a new ones in the drawer. Being silicone, don't have any reactions compared to standard rubber ones I purchased at hardware stores, plus much less expensive. Purchased 16mm I'd to use on 19mm tunnels, and stay on great, might be able to get away with 17mm rings, but really happy with my choice.

Will never order from these folks again

I waited a long time and that’s all I received was the eyebolt with no threaded rod attached to it

Perfect they are really made well and I used them for my car

Perfect they are really made well and I used them for my car. The only thing I had a great for us. It took three weeks to get here. So shipping was slow.

did not include wing nuts

Hi Scott, thank you for your feedback. We're sorry for any inconvenience caused. Please get in touch with us directly, and we'll assist you. Thanks for shopping with HomeDIYer!

Haven't received the order yet! It's been over

Haven't received the order yet! It's been over 19 days!

1 2 3

3M Führungsrolle ohne Zähne 5-60z Riemenscheibe Pulley für 3D Drucker CNC RepRap

Payment & Security

DIY Expert Support

Description

3M Timing Belt Idler Pulley — Smooth, Reliable Tension Control for 3D Printers & CNC Machines

✅ Key Features of These 3M Timing Belt Idler Pulleys

📐 Technical Specifications — 3M Idler Timing Belt Pulleys

❓ Frequently Asked Questions

3M Führungsrolle ohne Zähne 5-60z Riemenscheibe Pulley für 3D Drucker CNC RepRap

You may also like

Recently viewed

Let customers speak for us