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Information about ball bearing seals

On this page you will find the correct seal

You are seeking for a ball bearing with open design for a high rotational speed? Your ball bearings are supposed to be optimally protected? No problem – you will get our ball bearings as desired in the open design, with plastic seal or with steel seal.

Deep groove ball bearings without seal (open bearing)

Advantages

  • no frictional resistance
  • easy relubrication

Disadvantages

  • quick soiling
Rillenkugellager offen

Deep groove ball bearings with steel seals on both sides (ZZ)

ZZ-seal

  • Comparable with FAG as well as SKF: 2Z
  • Material: sheet steel
  • Structure: gap seal made of a profiled sheet steel washer

Advantages

  • Touchless
  • No additional friction and increase in temperature
  • Can be used up to limiting speed
  • Good sealing action against leakage of grease
  • Long maintenance-free period (lifetime lubrication)

Disadvantages

  • Limited sealing action in case of soilingg
Rillenkugellager mit Stahldichtung ZZ

Deep groove ball bearings with rubber seals on both sides (2RS)

2RS seal

  • Comparable with FAG: 2RSR SKF: 2RS1, 2RSH
  • Material: NBR, temperature resistance -20 °C to 100°C (up to 120° C for a short time)
  • Structure: contact lip seal on both sides

Advantages

  • High sealing action against soiling and humidity
  • NBR is resistant to a multitude of aggressive materials
  • Long maintenance-free term (lifetime lubrication)

Disadvantages

  • Increased frictional resistance
Rillenkugellager mit Kuncststoffdichtung 2RS

Suffix-key

Brand/SealSKFFAGNKENSKNTNKoyoSNRTWB
1/2 Sealing shield(s) Z / ZZ
our designation 		Z / 2ZZ / 2ZZ / 2ZZ / ZZZ / ZZZ / ZZZ / ZZZ / ZZ
1/2 Sealing shield(s) RS / 2RS
our designation		RS1 / 2RS1
RSH / 2RSH		RSR /
2RSR		RSR / 2RSR
RS2 / 2RS2		DU /
DDU		LU /
LLU		RS /
2RS		E /
EE		RS /
2RS
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