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Over the past few years, we have diligently pursued higher standards to enhance our product quality, aiming to deliver increased convenience and a better user experience.

608ZZ 8mm Bore Idler Pulley – POM & Rubber-Coated Wheels

○ Material and color can according to customers' requirement.
○ We can make different size as per customers' requirement.

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+86-15058997617 shirley@cnhune.com / +8615058997617

Product Advantages

Smooth Operation
The spacer design ensures smooth rolling and no jamming, even when screws are fully tightened.
Silent & High Load Pulley
Combines quiet bearings with high load capacity for smooth, low-noise performance.
Durable Materials
The nylon-coated outer layer offers strength, toughness, and fatigue resistance.
Precision Bearings
High-quality bearing steel provides quiet, high-speed, and wear-resistant performance.
Sealed & Dustproof
Metal dust cover ensures tight sealing; smooth surface with no burrs for refined quality.

Product Description

608ZZ Idler Rollers — 8mm Bore Wheels (White POM or Black Rubber‑Coated)

These 608ZZ idler rollers are designed for dependable, low-noise guiding and rolling in compact mechanisms. Each roller uses a 608ZZ double‑shielded bearing seated inside a precision‑molded outer wheel, with an 8 mm bore that fits standard 8 mm shafts/rods for straightforward installation and replacement.

Whether you're tuning a motion system for smooth travel or upgrading a worn roller that has started to chatter, the focus here is consistent rotation, predictable contact, and long service life.

Materials: Choose the Contact Behavior You Need

Different outer materials change how the roller behaves against tracks, plates, belts, or running surfaces.

White POM (Acetal) Wheel

The POM version is optimized for low friction and wear resistance, making it a strong choice for:

dry, clean environments
higher-speed rolling
3D printer carriages and lightweight automation guides

Black Rubber‑Coated Wheel

The rubber-coated option is built for extra traction and vibration damping, and is commonly used for:

sliding doors and hardware that benefits from grip
heavier drawers and fixtures
light conveyors or setups with minor surface irregularities or dust

Size Options (As Offered)

Below is a clear view of the size range described, so selection is quick and consistent.

Outer Diameter (OD)	Width Options	Notes / Typical Fit
29–30 mm	6–10 mm	Compact builds and tight clearances
32 mm	9–16 mm	General-purpose sizes for everyday loads
50 mm	12 mm	Larger contact area and improved stability

All options use the same 608ZZ bearing platform and 8 mm bore; choose OD/width based on clearance, contact area, and stability needs.

What to Expect in Use

In day-to-day operation, users typically notice:

quieter rolling (less squeak and chatter)
smoother travel (reduced binding from uneven contact)
lower maintenance thanks to the double shields, which help limit dust intrusion

These rollers are a practical fit for 3D printer upgrades (including Ender-style platforms), custom furniture hardware, small conveyor lines, and robotics prototypes where you want motion that feels clean and controlled.

Fitment & Selection Notes

Confirm your shaft/rod is 8 mm and your mount keeps the roller aligned (side loading shortens bearing life).
Pick POM when you want the lowest rolling resistance in cleaner environments.
Pick rubber-coated when you need grip, damping, or better behavior on imperfect surfaces.

Product Parameters

Item No.	628zz
Material	Bearing -Chrome steel, carbon steel, stainless steel
	Plastic part- POM/ Nylon6 /Nylon66 +GF/PU/Rubber
	Housing part - Plastic(Nylon)/ Steel/ Zinc alloy die casting / Aluminium profile/ alu. Alloy die casting
Color	Original/black/white/Red/ Green/ Orange, or per customers' requirement
Surface Treatment	Zinc plated/Nickle Plated/Black treatment/ Painting/Electrophoretic treatment
Features	heavy-duty,adjustable,low noise,easy installation,sliding smoothly,long life,standard,customized,etc.
Application	Sliding window and door, Sliding accessories, furniture accessories etc.
Packaing	Foil bag+Neutral Carton+Pallet, or per customers' requirement
Lead Time	According to the order q'ty
After-Sales Service	Online Support,Free Spare Parts
HS Code	8302410000
Origin	Wenzhou Zhejiang
OEM& ODM	Technical drawing or sample is needed

Measurement Method


Weight(g)	ID(mm)	OD(mm)	Height(mm)

Payment Terms

1.100% T/T in advance
2.30% T/T deposit, 70% balance against copy of B/L
3. PayPal
Packaging Details: Standard export packing (plastic bag, carton, and pallet or wooden case), or as per customer's requirements.
Delivery Port: Ningbo / Shanghai
Delivery Time: Normally within 30 days for ready goods or as per customer's request.

FAQ

What are your payment terms?
What are your payment terms?

1.100% T/T in advance2.30% T/T deposit, 70% balance against copy of B/L3. PayPalPackaging Details: Standard export packing (plastic bag, carton, and pallet or wooden case), or as per customer's requirements.Delivery Port: Ningbo / ShanghaiDelivery Time: Normally within 30 days for ready goods or as per customer's request.
How do you handle shipment?
How do you handle shipment?

For small orders: we ship via express (DHL, FedEx, UPS, TNT, etc.).For bulk orders: we ship by sea or by air, depending on your preference.
How long is the production lead time?
How long is the production lead time?

For in-stock samples: shipped within 2 days.For out-of-stock samples: lead time is within 7 days.For mass production: approximately 15 days after receiving the deposit.
What after-sales service do you offer for sliding rollers?
What after-sales service do you offer for sliding rollers?

We provide online technical support. If the issue is caused by a quality defect, we will replace the defective items with new ones.
How does your factory ensure quality control?
How does your factory ensure quality control?

80% of our staff have over 10 years of experience. We have a mature and skilled technical team along with a comprehensive quality management system to ensure consistent product quality.
Can we print our logo on the products?
Can we print our logo on the products?

Yes, we can print your logo on the products based on your design requirements.
Can we customize our own color box?
Can we customize our own color box?

Yes, if your order quantity reaches 1,000 sets, we can provide customized color box packaging.
Do you offer free samples?
Do you offer free samples?

Yes, we are happy to provide free samples for you to evaluate the quality.
Are you a manufacturer?
Are you a manufacturer?

Yes, we are a professional manufacturer specializing in door and window roller pulleys for over 20 years. We also have our own international sales department and handle both production and sales in-house.
How long does it take to receive a response after sending an inquiry?
How long does it take to receive a response after sending an inquiry?

We will reply to you within 6 working hours on business days.