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SEAL DESIGN

Tolerance for the outside diameter of the seal (ØD)

Bore diameter

ØD1 (mm)

Apparent metal cage

Rubber coating

Coating with grooves

ØD1 ≤ 50.0

+0.10 / +0.20

+0.15 / +0.30

+0.20 / +0.40

50.0 < ØD1 ≤ 80.0

+0.13 / +0.23

+0.20 / +0.35

+0.25 / +0.45

80.0 < ØD1 ≤ 120.0

+0.15 / +0.25

+0.20 / +0.35

+0.25 / +0.45

120.0 < ØD1 ≤ 180.0

+0.18 / +0.28

+0.25 / +0.45

+0.30 / +0.55

180.0 < ØD1 ≤ 300.0

+0.20 / +0.30

+0.25 / +0.45

+0.30 / +0.55

300.0 < ØD1 ≤ 500.0

+0.23 / +0.35

+0.30 / +0.55

+0.35 / +0.65

500.0 < ØD1 ≤ 630.0

+0.23 / +0.35

+0.35 / +0.65

+0.40 / +0.75

Roundness tolerance

Bore diameter

ØD1 (mm)

Apparent metal cage

Rubber coating

ØD1 ≤ 50.0

0.18

0.25

50.0 < ØD1 ≤ 80.0

0.25

0.35

80.0 < ØD1 ≤ 120.0

0.30

0.50

120.0 < ØD1 ≤ 180.0

0.40

0.65

180.0 < ØD1 ≤ 300.0

0.25% of the outside diameter

0.80

300.0 < ØD1 ≤ 500.0

0.25% of the outside diameter

1.00

500.0 < ØD1 ≤ 630.0

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Tolerance for the inside diameter of the seal (Ød)

Free and without constraint, the inside diameter of the sealing lip is always smaller than the

diameter of the shaft. The pre-tightening or interference denotes the difference between

these two values. Depending on the shaft diameter, the diameter of the sealing lip is generally

considered to be less, between 0.8 and 3.5 mm.

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DESCRIPTION

The KB5 profile is a shaft seal

composed of a staggered external

metal cage with an external flange,

a primary sealing lip without a spring

and an additional anti-pollution lip.

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ADVANTAGES

Good radial rigidity, particularly

for large diameters

Good stability when assembled,

preventing the bounce-back effect

Precise positioning when stopped

Sealing for high viscosity fluids

Primary sealing lip generating

low levels of friction and heat

Protection against undesirable

air contaminants

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APPLICATIONS

All types of rotative applications

Machine tools

Agriculture

Construction

Transmissions

Gear boxes

Motors

Pumps

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MATERIALS

Rubber

ACM 70 - 75 Shore A

EPDM 70 - 75 Shore A

FKM 70 - 75 Shore A

HNBR 70 - 75 Shore A

NBR 70 - 75 Shore A

Metal cage

Steel - AISI 1010

Stainless steel - AISI 304

Stainless steel - AISI 316

SHAFT SEALS

WITH A TYPE 5 STOP

KB5

ROTARY SEALS | SHAFT SEALS WITH A TYPE 5 STOP |

KB5

QUALITY & EXPERTISE FOR YOUR SEALING NEEDS