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| Brand Name: | no brand |
| Model Number: | EG001 |
| MOQ: | 1000 |
| Price: | $0.05-$2 |
| Payment Terms: | L/C,T/T |
| Supply Ability: | 100000/Month |
| Attribute | Value |
|---|---|
| Material | Nylon Plastic Housing with Carbon Steel Bearing |
| Color | Black |
| Load Capacity | 50kg |
| Roller Diameter | 25mm |
| Track Thickness | 2mm |
| Installation | Screw fixing |
| Package Content | 1 x Plastic Door Roller |
| Feature | Specification / Description |
|---|---|
| Load Capacity | 50 kg per pair (2 rollers) |
| Wheel Material | Nylon or POM (Plastic) - White or Black |
| Wheel Diameter | Commonly ~40mm (e.g., 39mm, 40mm, 41mm) |
| Bracket Material | Stainless Steel (SS201/SS304) or Zinc-Plated Steel |
| Bearing Type | Sealed Ball Bearing (e.g., 608ZZ) |
| Axle Material | Stainless Steel |
| Height Adjustment | Yes, via a screw mechanism on the bracket (typically 2-5mm range) |
| Application | Heavy-duty sliding glass doors, balcony doors, wardrobe doors, and gate rollers |
Core Function: A replacement roller wheel mechanism for aluminum sliding windows and doors.
Material & Construction (The "High Quality" claim):
Wheel: Nylon (POM/PA Plastic). This is key. High-quality nylon wheels are self-lubricating, wear-resistant, corrosion-proof, and operate quietly. They won't rust or mark the window track.
Housing: Iron (typically steel) with a coating (zinc or chrome plating). The iron housing provides the necessary structural strength to hold the wheel axle and withstand installation forces (hammering or pressing). The plating prevents rust.
Bearing: Likely a simple integrated steel roller bearing or bush bearing for smooth rotation.
Key Spec: Load Capacity 150KGS.
This is per roller. Standard sliding windows use 2 rollers at the bottom, so a pair could theoretically support 300KGS. This is a robust capacity for most residential and many commercial windows.
Important: Always factor in a safety margin. Don't use rollers at 100% of their stated capacity for long-term performance.
In the manufacturing context, this phrase indicates a product that optimizes value by using cost-effective but appropriate materials to achieve reliable performance.
"Cheap Price" is achieved through:
Mass Production: High-volume manufacturing in specialized factories.
Material Selection: Using nylon (inexpensive polymer) and coated iron instead of stainless steel or full brass.
Simple Design: A proven, standardized design with efficient production tooling.
"High Quality" is maintained by:
Using engineering-grade nylon for the wheel, not cheap plastic that will crack or deform.
Ensuring precise tolerances for smooth rolling.
Applying a proper anti-rust coating to the housing.
Rigorous quality control to sort out defective pieces.
In short: You are getting a reliable, no-frills workhorse component at the best possible wholesale price. It's not a luxury item, but a functionally sound product for the majority of applications.
To ensure you get what you pay for, you MUST verify these points with your supplier:
Exact Dimensions (THE MOST IMPORTANT STEP):
Wheel Diameter & Width: (e.g., 32mm x 15mm). Must match the old wheel and fit the track.
Total Height (from bottom of wheel to top of housing): Must suit the window sash height.
Axle Pin Diameter & Housing Hole Size: Must fit the existing slot in your window frame.
Installation Type:
Screw-On Type: Has tabs with holes for screws.
Knock-In (Press-In) Type: Has prongs that are hammered into place. Confirm which type you need.
Coating/Plating Quality:
Ask for the type (e.g., zinc plating, chrome plating). A thicker coating means better rust resistance, especially in humid climates.
Minimum Order Quantity (MOQ):
Wholesale prices require bulk orders. Typical MOQs can range from 500 to 5,000 pieces, often sold in packs of 100 or 1000.
Packaging:
Standard bulk packaging is in simple plastic bags or small boxes. Retail blister packs cost extra.
Sample Request:
ALWAYS request a physical sample before placing a large order. Test it for smoothness, check material stiffness, and measure dimensions precisely.
Mainland China Platforms (Ideal for Bulk):
1688.com: The leading B2B platform. This is where you'll find the factory-direct "cheap price." Use precise keyword translations.
Alibaba.com: Mix of manufacturers and trading companies. Easier for English communication.
Specialized Hardware Suppliers:
Search for "window hardware manufacturer" or "door and window accessories" on the above platforms.
