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

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

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/Seal	SKF	FAG	NKE	NSK	NTN	Koyo	SNR	TWB
1/2 Sealing shield(s) Z / ZZ our designation	Z / 2Z	Z / 2Z	Z / 2Z	Z / ZZ	Z / ZZ	Z / ZZ	Z / ZZ	Z / 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