Arc R Nylon Plastic Pulley Wheel 625-2RS Deep Groove Ball Bearing 5x35x5mm
Arc R Nylon Plastic Pulley Wheel 625-2RS Deep Groove Ball Bearing 5x35x5mm
Arc R Nylon Plastic Pulley Wheel 625-2RS Deep Groove Ball Bearing 5x35x5mm
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Arc R Nylon Plastic Pulley Wheel 625-2RS Deep Groove Ball Bearing 5x35x5mmArc R Nylon Plastic Pulley Wheel 625-2RS Deep Groove Ball Bearing 5x35x5mmArc R Nylon Plastic Pulley Wheel 625-2RS Deep Groove Ball Bearing 5x35x5mm

Arc R Nylon Plastic Pulley Wheel 625-2RS Deep Groove Ball Bearing 5x35x5mm

HomeDIYer
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By HomeDIYer®

Price:
$2.71 USD
Stock:
In stock (500 units), ready to be shipped

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Description

625-2RS Nylon Plastic Pulley Wheel — Smooth-Rolling Deep Groove Bearing Guide for DIY Automation

When your 3D printer carriage skips, your CNC gantry wobbles, or your linear rail system loses its smooth glide, the culprit is often a worn or undersized guide wheel. Makers, hobbyists, and small workshop builders who demand consistent motion control need a pulley wheel that combines a rigid bearing core with a low-friction outer rim — without adding unnecessary weight or bulk to their build.

This Arc R nylon plastic pulley wheel is built around a 625-2RS deep groove ball bearing with dual rubber seals, pressed into a precision-molded nylon (PA) outer wheel. The overall dimensions are 5 mm bore × 35 mm outer diameter × 5 mm width (0.20" × 1.38" × 0.20"), making it a direct fit for M5 axle bolts commonly used in V-slot and 2020 extrusion systems. The nylon rim runs directly on V-slot rails or smooth guide rods, while the sealed bearing handles radial loads quietly and efficiently.

Typical use cases include 3D printer X/Y/Z carriage guide wheels on V-slot aluminum extrusion, CNC router gantry idler pulleys for belt tensioning, and lightweight conveyor or sliding-door guide systems in maker and educational lab environments — all scenarios where a low-noise, corrosion-resistant rolling element is essential for repeatable motion.

🔩 Compatible with: M5 axle bolts & eccentric nuts · V-slot 2020/2040/4040 aluminum extrusion · Standard 625-series bearing housings · 3D printer frames (Ender, Anet, Creality-style) · CNC router gantry systems

✅ Key Features of These 625-2RS Nylon Pulley Wheels

⚙️
625-2RS Sealed Bearing Core

Dual rubber seals on the deep groove ball bearing block dust, debris, and moisture from entering the raceway, extending service life in open-frame printer and CNC environments.

🏗️
Precision Nylon (PA) Outer Rim

The injection-molded nylon wheel body is self-lubricating and runs quietly on V-slot rails, reducing noise and eliminating the need for frequent lubrication on the contact surface.

📐
5 × 35 × 5 mm Compact Profile

The slim 5 mm width and 35 mm outer diameter fit standard V-slot carriage plates and eccentric nut spacers without modification, keeping your build compact and aligned.

🛡️
Corrosion-Resistant Construction

Nylon resists moisture, mild chemicals, and oxidation, while the sealed bearing prevents internal rust — making these wheels suitable for humid workshop or outdoor enclosure builds.

🔄
Smooth, Low-Friction Rolling

The deep groove bearing geometry handles both radial and light axial loads, delivering consistent, low-resistance motion across the full travel range of your carriage or gantry.

📦
Available in Multi-Pack Quantities

Choose from 1, 4, 10, or 50-piece packs to match your project scale — whether you're replacing a single worn wheel or stocking up for a full printer or CNC build.

📐 Technical Specifications — 625-2RS Nylon Pulley Wheel

Bearing Model 625-2RS (Deep Groove Ball Bearing, Dual Sealed)
Bore Diameter (Inner) 5 mm (0.20")
Outer Diameter 35 mm (1.38")
Width 5 mm (0.20")
Wheel Material Nylon (PA) — injection molded
Bearing Seal Type Dual rubber seals (2RS)
Compatible Axle M5 bolt
Rail Compatibility V-slot aluminum extrusion (2020 / 2040 / 4040)
Load Type Radial + light axial
Lubrication Pre-lubricated (sealed bearing); nylon rim self-lubricating
Available Pack Sizes 1 Pcs / 4 Pcs / 10 Pcs / 50 Pcs
Unit Weight See variant options

❓ Frequently Asked Questions

What size axle bolt does this pulley wheel use?

This wheel is designed for M5 axle bolts. The 625-2RS bearing has a 5 mm bore, which is a direct fit for M5 bolts and eccentric nuts used in standard V-slot carriage assemblies on 2020 and 2040 aluminum extrusion frames.

Will this wheel fit my Creality Ender 3 or similar 3D printer?

Yes. The 5 × 35 × 5 mm profile and M5 bore are the standard dimensions used on Ender 3, Ender 5, and most Creality-style V-slot carriage plates. These wheels are a direct replacement for the stock guide wheels on X, Y, and Z axis carriages.

How strong is the nylon wheel body — will it crack under load?

The nylon (PA) outer rim is injection-molded for consistent wall thickness and handles the rolling contact loads typical of 3D printer and light CNC applications. For heavy-duty industrial conveyor or high-load CNC use, consider a metal-rimmed alternative. For standard maker and printer builds, the nylon construction is well-suited to the task.

Are these wheels corrosion-resistant for humid or outdoor enclosure use?

Yes. The nylon rim does not rust or corrode, and the dual rubber seals (2RS) on the 625 bearing prevent moisture from reaching the internal raceways and balls. This makes the wheel a reliable choice for enclosures, humid workshops, or builds where occasional condensation is a concern.

Do I need to lubricate these wheels before installing them?

No additional lubrication is required before installation. The 625-2RS bearing comes pre-lubricated from the factory, and the sealed design retains that grease over the bearing's service life. The nylon rim is inherently self-lubricating on the rail contact surface.

How do I choose between the 1, 4, 10, and 50-piece pack options?

Select the 1 Pcs pack for a single replacement wheel. The 4 Pcs pack suits a typical single-axis carriage (e.g., one X-axis carriage with 4 wheels). The 10 Pcs pack covers a full printer build with spares. The 50 Pcs pack is ideal for workshop stock, classroom labs, or batch builds of multiple machines.

Can these wheels be used on smooth rods or only on V-slot rails?

These wheels are optimized for V-slot aluminum extrusion rails, where the V-groove profile on the nylon rim engages the rail channel. They are not designed to run on smooth cylindrical rods — for smooth rod applications, linear bearings (e.g., LM8UU) are the appropriate choice.

🛒 Select your pack size (Amount) above, then add to cart.

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