SS 6900 ZZ/2RS Stainless Steel Deep Groove Ball Bearings Suppliers

Ningbo Aosen Bearing Co., Ltd. manufactures SS 6900 Series Stainless Steel Deep Groove Ball Bearings for design engineers, plant maintenance teams, and distributors who need compact, corrosion-resistant rotation in limited installation spaces. Backed by our in-house factory, Ningbo Weijun Bearing Co., Ltd., we control the production chain from stainless steel selection through heat treatment, grinding, assembly, and final inspection.

Within this series, our Custom SS 6900 ZZ/2RS Stainless Steel Deep Groove Ball Bearings Suppliers program covers standard metric models and application-specific variants. As a China manufacturer and export supplier for this family, we combine nearly a decade of deep groove ball bearing production experience with one commercial contact for engineering, quality, and delivery.

Compact Range for Constrained Installations

As a SS 6900 Series Stainless Steel Deep Groove Ball Bearings manufacturer, we match product configuration to the application, operating limits, interfaces and acceptance criteria defined for each project.

The 6900 series is the thin-section member of the stainless deep groove family. It reduces the cross-section compared with wider series while keeping the deep-groove raceway, so the bearing can support radial loads and moderate axial loads in both directions without dominating the housing envelope.

All models keep the standard 69-series boundary dimensions, so interchangeable fit with existing shafts and housings is maintained. When a different bore range is required, we also produce SS 6800 Series Stainless Steel Deep Groove Ball Bearings and SS 6000 Series Stainless Steel Deep Groove Ball Bearings; the complete family is documented under Stainless Steel Deep Groove Ball Bearings.

Material and Design Selection

Washdown, humid, and mildly chemical environments are where stainless construction earns its operating cost. The SS 6900 series can be manufactured from AISI 420, 440, 440C, 304, or 316 materials, letting us match hardness and corrosion resistance to the duty cycle.

• AISI 440C is typically selected for rolling elements and raceways where load and continuous running require high hardness.
• AISI 304 and 316 versions are chosen where corrosion resistance and product purity matter more than maximum hardness.
• Internal clearance and raceway surface finish are controlled to keep the thin cross-section stable under temperature variation.

The thin section places greater demands on grinding and heat treatment consistency. Our process includes precision turning, heat treatment, raceway grinding, and controlled assembly so each bearing runs smoothly and quietly at operating speed.

Sealing and Lubrication Options

Sealing is the first configuration decision for the SS 6900 series. We supply both standard solutions and can switch one model between ZZ and 2RS without changing the boundary dimensions.

Lubrication can also be adapted: grease type and fill volume are selected against speed, torque, and operating temperature, and we can screen batches for low noise or low vibration where required.

Manufacturing and Quality Approach

Our in-house factory, Ningbo Weijun Bearing Co., Ltd., covers more than 8,000 square meters and focuses on large-series deep groove ball bearing production with an annual output of 13–15 million sets. Operating the production line ourselves gives us direct control over scheduling, cost, and batch-to-batch consistency for standard and customized orders.

• Incoming material verification before production
• Dimensional checks on inner diameter, outer diameter, and width
• Roundness measurement and raceway surface control
• Rotational testing of assembled bearings
• Flatness and visual inspection before packaging

The Aosen and Weijun teams apply double quality control, with parts exported to Europe, the United States, Japan, Southeast Asia, and the Middle East for industrial machinery, automotive, and motor applications.

Where the SS 6900 Series Fits

The series is most common in equipment where the bearing envelope is small but uptime expectations are high. Typical positions include small electric motors and servo drives, conveyors and packaging modules, food and beverage processing lines, water treatment pumps, outdoor machinery, and precision instruments. In these applications the stainless construction reduces corrosion-related failures and extends service intervals compared with standard chrome steel bearings.

Customization and Supply Coordination

Customization is a normal part of our supply scope, not an exception. We modify bores and outer rings, add flanges or grooves, adjust internal clearance, specify grease fill, and apply special tolerance requirements. Parts can be developed from customer drawings or samples, including extended inner rings and grooved outer rings.

For distributors and OEMs, we also coordinate scheduled releases, mixed-size orders, export documentation, and packaging instructions. Operating as manufacturer, factory, and export supplier under one roof simplifies the interface between your engineering team and our production schedule.

Information We Use to Configure Your Solution

To prepare an accurate quotation and production plan, we start from the working point rather than a generic price list. The following inputs define the configuration:

• Part number, or shaft and housing dimensions if the number is unknown
• Estimated annual quantity, order releases, and delivery destination
• Radial and axial load, speed, and operating temperature range
• Environment: humidity, washdown, chemicals, outdoor exposure
• Preferred seal type, or the current failure mode of the installed bearing
• Noise, vibration, and runout limits for the end application
• Lubrication method and grease specification requirements
• Marking, packaging, and export documentation requirements

Frequently Asked Questions