
Professional silent and anti-rust roller for sliding door and window systemsProducts Description
As a factory specializing in bearings and pulleys, BLH has developed the SS698ZZ POM Sliding Door Roller as a core product for modern residential and commercial sliding door and window systems. It is assembled with a 440 stainless steel miniature deep groove ball bearing S698ZZ (internationally known as SS698ZZ, W698ZZ, S698-2Z, R-1980ZZ, SMR698ZZ, 619/8, and GOST equivalent 1000098ZZ), paired with a high-toughness POM outer wheel and SUS303 stainless steel screw. The complete assembly delivers ultra-silent operation, strong load capacity, and long service life. It serves as a reliable replacement sliding door wheel and sliding window wheel for glass doors, UPVC windows, shower doors, wardrobe sliding systems, and similar applications.

Material Introduction
We carefully select three high-grade materials to ensure stable performance in humid, semi-outdoor, and long-term sliding environments:
POM Outer Wheel
The outer roller is made of high-density POM (polyoxymethylene). It offers excellent wear resistance, anti-aging properties, low noise, and smooth sliding. Compared with ordinary plastic wheels, the surface does not scratch the track and maintains dimensional stability even after millions of sliding cycles.
S698ZZ (SS698ZZ) 440 Stainless Steel Bearing
The built-in bearing is an 8 × 19 × 6 mm 440 stainless steel deep groove ball bearing. It is commonly referred to in international markets as SS698ZZ, W698ZZ, S698-2Z, R-1980ZZ, and other aliases. The 440 stainless steel material provides outstanding rust resistance, making it ideal for bathrooms, balconies, and coastal environments. High-precision rotation ensures jitter-free and ultra-smooth sliding for doors and windows.
SUS303 Stainless Steel Screw
Each roller comes pre-installed with a SUS303 stainless steel screw. It is corrosion-resistant, easy to install, and remains secure under long-term vibration. No additional assembly is required on site, which greatly improves installation efficiency.
Performance Features
Silent sliding operation with virtually no noise
Full stainless steel internal structure for complete anti-rust protection in wet environments
High wear-resistant POM wheel body that resists deformation
Stable rotation supported by the S698ZZ (SS698ZZ) 440 stainless steel bearing
Pre-assembled SUS303 screw for fast and convenient installation
Ideal replacement for aging sliding door and window rollers with strong compatibility
This POM sliding door roller effectively solves common problems such as noise, rust, jamming, and wheel deformation. It functions as a professional sliding door pulley and sliding window pulley solution.
Installation Examples
Installation is straightforward. After removing the old roller, simply fix the new unit to the door or window track bracket using the pre-installed screw, then adjust the height so the wheel sits fully on the track. Most customers report that the entire process takes only 10–15 minutes and can be completed by one person. The roller is compatible with aluminum, UPVC, and glass door/window frames. After replacement, sliding resistance is noticeably reduced and the operation feels much lighter.
Overseas Customers and Industry Peers Using Our Products
We have been supplying this model steadily to door and window hardware distributors and project contractors in multiple countries. For example, a major Australian shower enclosure system integrator has been purchasing it in volume for two consecutive years for high-end residential projects. A German sliding door hardware wholesaler uses it as a primary replacement part and reports excellent anti-rust performance in humid climates. A glass door manufacturer in California, USA, integrates it into balcony sliding door systems and has seen a clear drop in after-sales complaints. Several UPVC window factories in Southeast Asia also adopt our SS698ZZ POM Sliding Door Roller as a standard component. These real-world applications confirm the product's reliability across different climates and working conditions.
Product Specifications
Model: BLH011688
Manufacturer: Dongguan Good Power Bearing Co., Ltd.
Daily Production Capacity: 10,000 sets
Wheel Material: High-toughness POM
Bearing Model: S698ZZ (Alternative names: SS698ZZ, W698ZZ, S698-2Z, R-1980ZZ, SMR698ZZ, 619/8, 1000098ZZ)
Bearing Size: 8 × 19 × 6 mm
Bearing Material: 440 Stainless Steel
Screw Material: SUS303 Stainless Steel
Key Functions: Silent, anti-rust, wear-resistant
Applications: Sliding doors, sliding windows, wardrobe doors, shower doors, balcony glass doors, and other hardware replacement uses.
OEM & Wholesale Service
We are a direct factory. Customization of wheel size, hardness, color, and screw specifications is available. We can also mark the bearing with the customer's preferred designation. Consistent quality, fast delivery, and competitive bulk pricing make this product suitable for global hardware distributors.
Frequently Asked Questions
What bearing is installed in this sliding door roller?
It is fitted with a 440 stainless steel S698ZZ miniature bearing, also known internationally as SS698ZZ, W698ZZ, S698-2Z, R-1980ZZ, and other aliases.
What materials is this roller made of?
It consists of a POM outer wheel, a 440 stainless steel S698ZZ bearing, and a SUS303 anti-rust screw.
Is this roller suitable for humid environments?
Yes. The full stainless steel internal structure provides reliable rust protection and is suitable for bathrooms, balconies, and semi-outdoor sliding systems.
What kinds of doors and windows can this wheel fit?
It is widely used as a sliding door wheel and sliding window wheel for glass doors, UPVC windows, shower doors, and furniture sliding systems.

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The above content is based on our factory's actual production experience and customer feedback. It accurately reflects the product's performance and real applications, For customized specifications or sample testing, please feel free to contact us.
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