High Speed and Precision
NSK Deep Groove Ball Bearings
NSK deep groove ball bearings are the most widely used bearing type in industrial applications, engineered specifically for high-speed operation and minimal power loss. These versatile components are designed to accommodate both radial loads and axial loads in both directions, making them a robust choice for diverse machinery. Whether you require the standard metric series, high-performance NSKHPS variants, or corrosion-resistant ES1 stainless steel, our extensive Swiss stock ensures your operations maintain maximum uptime. Corsair Sarl provides expert technical assistance to help you identify the correct specification for your specific environment and load requirements.
Contents & Menu
Applications and Use
NSK deep groove ball bearings are utilised across virtually every industrial sector due to their reliability and ease of mounting.
Common applications include:
Industrial Electric Motors
High-efficiency and inverter-fed motors.
Transmission Systems
Gearboxes and power transmission units.
Pumps and Fans
Continuous operation environments requiring low noise
Household Appliances and Power Tools
Applications demanding high speed and low friction.
Food and Beverage
Specialist stainless and ‘Molded-Oil’ variants for washdown areas.
Product Downloads
Detailed technical catalogues are available for download below.
Key specifications are also summarised on this page.
Catalogues (PDFs)
NSK Deep Groove Ball Bearings (click to download)Choose Corsair: Your Premium Partner for Deep Grove Ball Bearings
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Quick Selection: Open vs Shielded vs Sealed
Shielded (ZZ)
Non-contact metal shields on both sides. These are best for low-friction, high-speed applications in relatively clean environments where grease retention is required.
Sealed (DDU/VV/DDW)
VV (Non-contact)
Provides better dust resistance than ZZ without increasing torque. Unsuitable for splash water.
DDW (Light-contact)
Excellent dust resistance and normal splash water protection with lower torque than standard contact seals.
DDU (Contact)
Full-contact rubber seals for maximum resistance to dust and moisture. Excellent for preventing grease leakage.
Standards, Naming, and Identification
NSK bearings follow metric ISO dimensions, though inch (R series) variants are available.
How to identify your bearing:
- Basic Code: 4 digits (e.g., 6203) indicating the series and bore size.
- Sealing Suffix: ZZ (Shielded), DDU (Contact Seal), VV (Non-contact Seal), or DDW (Light-contact).
- Clearance Suffix: CN (Standard), C3 (Greater than standard), or CM (Electric motor specific).
- Cage Material: Standard pressed steel (unmarked), Polyamide/Plastic (T1X, T85), or Brass (M).
- Material: Standard steel vs. Stainless ES1 (-H-20 suffix).
Materials and Specialist Options
STANDARD (Z-Steel)
Manufactured from vacuum-degassed ultra-pure steel. This material reduces impurities that cause fatigue, extending bearing life by up to 80% compared to conventional steels.
STAINLESS (ES1 Series)
Designed for food processing and chemical washdown environments. ES1 nitrogen-infused alloy steel offers superior corrosion resistance and hardness compared to AISI 440C. It is often paired with food-grade grease (RLS) or Molded-Oil (L11-B).
HIGH PERFORMANCE (NSKHPS)
The High Performance Standard (HPS) series offers 15% longer service life and 15% higher limiting speeds than standard variants.
How to Request a Quote Quickly
To receive an accurate quote, please provide:
- Reference Code: (e.g., 6305 DDU C3).
- Quantity: Total units required.
- Environment: Details of high temperatures, moisture, or chemical exposure.
- Variants: Specify if stainless steel (ES1) or motor-grade (CM) is required.
- Required Date: Your timeline for delivery.
Service Note: Swiss stock items are available for same-day dispatch on stock items.
Technical Specifications
Dimensions and Performance Data (Common Sizes)
Values for NSKHPS variants are higher; please enquire for exact data.
Specialist Lubrication Codes
FAQ
Industrial Electric Motors
High-efficiency and inverter-fed motors.
Transmission Systems
Gearboxes and power transmission units.
Pumps and Fans
Continuous operation environments requiring low noise
Household Appliances and Power Tools
Applications demanding high speed and low friction.
Food and Beverage
Specialist stainless and ‘Molded-Oil’ variants for washdown areas.
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