Household Appliances High Stability R-Shaped 625ZZ Bearing Pulley

• 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.

HUNE 625ZZ Series Nylon Bearing Rollers

Compact, quiet, and smooth-running wheels for sliding systems, light mechanisms, and appliances

When you need a roller that fits into tight spaces but still runs cleanly and quietly, the HUNE 625ZZ Series is a dependable option. These wheels are built around a sealed deep-groove ball bearing (625ZZ) and paired with a nylon wheel body, creating a small-diameter pulley that's easy to integrate into many sliding and guiding assemblies.

This series is especially useful for replacements and compact designs where you want low rolling resistance, stable tracking, and reduced noise—without upsizing the hardware.

Core Construction & Why It Matters

• Nylon wheel (often POM-based)
  • The wheel material is chosen for practical reasons you'll notice in real use:
    • Low friction against common rails (aluminum/steel)
    • Good wear resistance for repeated cycles
    • Quieter operation than metal wheels
    • Less vibration and reduced chance of rail surface marring over time
• 625ZZ shielded bearing (double-shield)
  • The bearing is protected on both sides, which helps:
    • Keep dust out during everyday use
    • Handle light moisture exposure better than open bearings
    • Maintain consistent rotation with minimal attention

In most typical installations, this translates to a smoother feel and longer service intervals—usually with nothing more than basic track cleaning.

Typical Size Range (Practical Fit Options)

The 625ZZ series is designed around a consistent 5 mm bore, which matches many standard shafts/axles. Wheel sizes vary across the range to suit different clearances and stability needs.

• Outer diameter: approx. 17–24 mm (by model)
• Wheel thickness: typically 6–8 mm
• Inner bore: 5 mm

To make selection easier, here's how the sizes generally map to use cases:

Exact dimensions depend on the specific model variant, so it’s still worth matching OD/thickness to your track and side clearance.

Where These Rollers Are Commonly Used

In the field, these rollers show up in two main categories:

• Sliding hardware
  • Sliding windows and light-to-medium sliding door assemblies
  • Furniture and cabinetry systems (drawers, sliding panels, accessories)
  • Custom light partitions or guiding tracks where quiet motion matters
• Appliances and continuous-duty components
  • Guide wheels / belt guides in certain appliance mechanisms
  • Components in washers/dryers or vacuum-related assemblies where steady, low-noise rotation is important

The low-profile design is often the reason they get picked—there's enough performance to feel "smooth," but the package stays compact.

Installation Notes (DIY-Friendly)

Because the bore is 5 mm and mounting is straightforward, these rollers are typically easy to drop into existing systems:

• Good for replacing worn pulleys without redesigning the assembly
• Suitable for custom builds where you're standardizing around a 5 mm axle
• Rounded/grooved profiles (by model) help maintain tracking and reduce binding when aligned correctly

Load & Everyday Durability

For their size class, these rollers are built for practical loads in typical configurations. A common working range is roughly 20–50 kg per roller depending on how the system is designed. In other words: they're small, but they're not "toy wheels."

• 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.