Bearing 6003

The 6003 bearing is a single-row ball bearing measuring 17 × 35 × 10 mm (internal diameter 17 mm, external diameter 35 mm, width 10 mm). We stock 20 variants, 14 of which are in stock and ready for dispatch within 24 hours. Prices start at 25 Kč and vary depending on the manufacturer and variant.

Dimensions and interchangeability

The designation 6003 is an international standard (ISO 15), so a 6003 bearing from any manufacturer always has the same dimensions of 17 × 35 × 10 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

• 6003 2RS – double-sided rubber seals – for dusty and damp environments
• 6003 2RSH – double-sided rubber seal (SKF designation)
• 6003 LLU – double-sided rubber seal (NTN designation)
• 6003 2Z – double-sided metal shield – lower friction, higher speeds
• 6003 ZZ – double-sided sheet metal cover (NTN designation)
• 6003 C3 – increased radial clearance – for higher temperatures and interference fits
• 6003 C4 – even greater clearance than C3 – for very high-temperature applications

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

Manufacturers

For the 6003 designation, we offer the brands SKF, NTN, ZVL, IBB, IBU, KG and ZENDER. ZVL or IBB are sufficient for normal operation; for demanding and high-speed applications, we recommend SKF or NTN.

How to choose

The dimensions are identical for all 6003 bearings, so the environment is the deciding factor: 2RS sealed bearings for dusty and damp conditions; 2Z shielded 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 bearing designations in the guide ‘How to choose a bearing’.