×

Subscribe to our mailing list

Get a Physical Copy Mailed to You

NDA SHIPPING ON ORDERS RECEIVED BY 1PM EST 720.209.9933

12516 HUDSON WAY, THORNTON, CO 80241

logo

logo
  • About Us
  • Sealing Products
  • Engineering Specs
  • Seal Finder
  • Contact Us
  • Get a Quote

Shaft Eccentricity

The best operating condition is to have the shaft rotating perfectly centered and concentric to the axis of the rotary shaft seal. Obviously this is not possible and inevitably some shaft run-out is always present.

Therefore the sealing lip must compensate for it. The higher the rotational speed, the smaller the permissible shaft run out. The inertia of the sealing lip prevents it from following the shaft movements. It is therefore advisable to install the seal immediately adjacent to the bearing and minimize bearing play.
truseal_shaft_runout

Eccentricity between shaft and housing bore centers should be avoided as much as possible, so as to reduce unilateral load (wear) of the sealing lip.
truseal_shaft_eccentricity

Total eccentricity is the combined total of run-out and offset as depicted in the following graphs:
truseal-eccentricity-run-out-offset2

truseal-eccentricity-run-out-offset1

DDS seal O.D. options
truseal_od_sealing

  • General Information
    • General Rotary Seal Information
    • Shaft Seal Installation
    • Shaft Seal Type Interchange Table
    • Standard Shaft Seal Types
  • Tolerances Information
    • Bore Specs Tolerences
    • Shaft Specs Tolerances
    • Press-Fit Specs Tolerances
  • Materials Information
    • General Materials Information
    • Material Fluid Compatibility
    • Case and Spring Materials
  • Shaft Information
    • Shaft Eccentricity
    • Rotary Seal Permissible Shaft Speed
    • Permissible Shaft Pressure

Contact Us

  • 12516 Hudson Way, Thornton, CO 80241
       720.436.8322
       info@ddsseals.com

Product Info

    DDSSEALS Warranty

    About Us

    Sealing Products

    Engineering Specs

    Seal Finder

    Contact Us

Connect With us

  •  
  •  
  •  
  •  
© 2023 DDSSeals. All Rights Reserved. Powered By OnlineStir     Privacy Policy | Terms of Use | FTC Disclosure
Translate »
MENU logo
  • About Us
  • Sealing Products
  • Engineering Specs
  • Seal Finder
  • Contact Us
  • Get a Quote