Bearing 6204

The 6204 bearing is a single-row ball bearing measuring 20 × 47 × 14 mm (internal diameter 20 mm, external diameter 47 mm, width 14 mm). We stock 27 variants, 14 of which are in stock with dispatch within 24 hours. Prices start at 44 Kč and vary depending on the manufacturer and variant.

Dimensions and interchangeability

The designation 6204 is an international standard (ISO 15), so a 6204 bearing from any manufacturer always has the same dimensions of 20 × 47 × 14 mm and is mechanically interchangeable. They differ only in terms of seal design, clearance, precision and service life. When replacing a worn part, you can therefore choose a different brand to the one used in the original machine.

The variants we stock

• 6204 2RS – double-sided rubber seals – for dusty and damp environments
• 6204 2RSH – double-sided rubber seal (SKF designation)
• 6204 LLU – double-sided rubber seal (NTN designation)
• 6204 2Z – double-sided metal shield – lower friction, higher speeds
• 6204 ZZ – double-sided sheet metal cover (NTN designation)
• 6204 2ZR – double-sided sheet metal cover (ZVL designation)
• 6204 C3 – increased radial clearance – for higher temperatures and interference fits
• 6204 C4 – even greater clearance than C3 – for very high-temperature applications
• 6204 NR – groove including supplied retaining ring
• 6204 ETN9 – polyamide cage – higher speeds and loads

Without a suffix, this is an open bearing without a seal — the cheapest option for clean and permanently lubricated mountings.

Manufacturers

For the 6204 designation, we offer the following brands: SKF, FAG, NTN, ZVL, IBB, IBU, KG, ZENDER and FK. ZVL or IBB are sufficient for standard operation; for demanding and high-speed applications, we recommend SKF, FAG or NTN.

How to choose

The dimensions are identical for all 6204 bearings, so the choice depends on the operating environment: 2RS sealed bearings for dusty and damp conditions, 2Z open bearings for clean and high-speed applications, and C3 clearance for heating or press-fitting. If you’re unsure, we can advise you based on the machine and the original part — tel: 270 003 620. You can find details on the marking system in the guide ‘How to choose a bearing’.