Nylon Bearing Roller H Type Grooved Wheel Pulleys Rail Wheel 695ZZ 5x21x9 mm
Nylon Bearing Roller H Type Grooved Wheel Pulleys Rail Wheel 695ZZ 5x21x9 mm
Nylon Bearing Roller H Type Grooved Wheel Pulleys Rail Wheel 695ZZ 5x21x9 mm
Nylon Bearing Roller H Type Grooved Wheel Pulleys Rail Wheel 695ZZ 5x21x9 mm
Nylon Bearing Roller H Type Grooved Wheel Pulleys Rail Wheel 695ZZ 5x21x9 mm
Nylon Bearing Roller H Type Grooved Wheel Pulleys Rail Wheel 695ZZ 5x21x9 mm
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Nylon Bearing Roller H Type Grooved Wheel Pulleys Rail Wheel 695ZZ 5x21x9 mmNylon Bearing Roller H Type Grooved Wheel Pulleys Rail Wheel 695ZZ 5x21x9 mmNylon Bearing Roller H Type Grooved Wheel Pulleys Rail Wheel 695ZZ 5x21x9 mmNylon Bearing Roller H Type Grooved Wheel Pulleys Rail Wheel 695ZZ 5x21x9 mmNylon Bearing Roller H Type Grooved Wheel Pulleys Rail Wheel 695ZZ 5x21x9 mmNylon Bearing Roller H Type Grooved Wheel Pulleys Rail Wheel 695ZZ 5x21x9 mm

Nylon Bearing Roller H Type Grooved Wheel Pulleys Rail Wheel 695ZZ 5x21x9 mm

HomeDIYer
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By HomeDIYer®

Price:
$35.35 USD
Stock:
In stock (500 units), ready to be shipped

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Description

695ZZ Nylon Grooved Wheel Pulley — Smooth, Quiet Rail Roller for DIY Linear Motion

When your linear motion system rattles, binds, or wears out prematurely, the culprit is often a low-grade roller that can't handle the load. Makers, hobbyists, and small-workshop builders who need reliable, low-noise travel along V-slot or round rails will find the 695ZZ nylon bearing roller to be a dependable upgrade that keeps projects running smoothly.

Each roller is built around a 695ZZ ball bearing pressed into a POM (polyoxymethylene) nylon wheel body. The H-type grooved profile is machined to ride cleanly on standard round rails and rod guides. The bearing bore measures 5 mm (0.197 in), the outer diameter is 21 mm (0.827 in), and the wheel height is 9 mm (0.354 in), making it a direct fit for many common 695-series bearing applications.

Typical use cases include DIY CNC gantry carriages, 3D printer axis rollers, sliding door guides, and lightweight conveyor rail systems — anywhere a compact, self-lubricating grooved wheel is needed for smooth linear travel.

🔩 Compatibility: Fits 695ZZ bearing seats (5 mm bore). Designed for round rod rails and compatible V-groove track profiles. Verify your rail diameter and groove angle before ordering.

✅ Key Features of These 695ZZ Nylon Grooved Wheel Pulleys

⚙️ 695ZZ Ball Bearing Core

Pre-installed 695ZZ shielded ball bearing provides smooth, low-friction rotation and handles both radial and light axial loads without additional lubrication.

🔵 POM Nylon Wheel Body

The polyoxymethylene (POM) outer wheel is self-lubricating, resistant to wear, and operates quietly — reducing vibration and noise compared to metal rollers.

📐 H-Type Grooved Profile

The H-groove geometry centers the roller on round rod rails, preventing lateral drift and maintaining consistent tracking across the full travel range.

📏 Compact 5 × 21 × 9 mm Dimensions

A small footprint (5 mm bore / 21 mm OD / 9 mm height) makes this roller easy to integrate into tight carriage designs without adding bulk.

🛡️ Corrosion-Resistant Construction

POM is inherently resistant to moisture and mild chemicals, and the shielded bearing reduces contamination ingress — suitable for light-duty indoor automation environments.

📦 Flexible Pack Quantities

Available in 1, 2, 5, and 10-piece packs so you can order exactly what your build requires — from a single replacement to a full carriage set.

📐 Technical Specifications — 695ZZ Nylon Grooved Wheel Pulley

Bearing Type 695ZZ Shielded Ball Bearing
Wheel Material POM (Polyoxymethylene) Nylon
Wheel Profile H-Type Grooved
Bore Diameter (Inner) 5 mm (0.197 in)
Outer Diameter 21 mm (0.827 in)
Wheel Height 9 mm (0.354 in)
Compatible Rail Type Round rod rail / compatible V-groove track
Lubrication Self-lubricating (POM); bearing pre-greased
Pack Size See variant options
Finish Natural POM (off-white / light grey)

❓ Frequently Asked Questions

What rail size does this grooved wheel fit?

This roller is designed for round rod rails that seat into the H-type groove profile. The 695ZZ bearing has a 5 mm bore, so the mounting shaft or axle must be 5 mm in diameter. Always verify your rail diameter and groove angle match before ordering.

Is POM strong enough for my application?

POM (polyoxymethylene) is a rigid engineering thermoplastic with good compressive strength and stiffness. It performs well in light-to-medium duty linear motion applications such as 3D printer axes, CNC gantries, and sliding guides. For heavy industrial loads or high-impact environments, a metal-bodied roller would be more appropriate.

Does this roller resist corrosion and moisture?

Yes. POM has inherent resistance to moisture, oils, and mild chemicals, making it suitable for indoor automation and light workshop use. The 695ZZ bearing is double-shielded to reduce contamination ingress. It is not rated for submersion or harsh chemical exposure.

Is this compatible with V-slot aluminum extrusion profiles?

This roller features an H-type groove designed primarily for round rod rails. Compatibility with V-slot extrusion depends on the groove angle and rail geometry of your specific profile. We recommend confirming the groove dimensions match your extrusion before purchasing.

How many pieces do I need for a typical carriage?

A standard linear carriage typically uses 3–6 rollers depending on the design (e.g., 3-point or 4-point contact). Select the 5-piece or 10-piece pack if you are building a full carriage or want spares on hand. The 1-piece and 2-piece options are ideal for replacements or prototyping.

Does the 695ZZ bearing need additional lubrication?

The 695ZZ bearing comes pre-greased from the factory and the shielded design retains lubrication during normal use. The POM wheel body is also self-lubricating. Under typical light-duty conditions, no additional lubrication is required. In high-cycle or dusty environments, periodic inspection is recommended.

Can I use these rollers in a 3D printer or CNC router build?

Yes — 695ZZ grooved wheel rollers are commonly used in DIY 3D printer axis assemblies and lightweight CNC gantry carriages where a compact, low-noise roller is needed. Confirm that your carriage design accommodates a 5 mm axle and 21 mm outer diameter before finalizing your build.

🛒 Select your Material, Size, and Amount above, then add to cart.

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