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Red angular contact ball bearing in box packaging

ZIBOO

ZIBOO NTN 7211C Angular Contact Ball Bearing 55x100x21mm

SKU CH-MC74-6FBKA

Angular contact ball bearing measuring 55x100x21mm for precision rotational applications

  • TypeTest Equipment
  • Color/FinishRed
  • Item Count1 pack
  • Selling UnitBox
  • Parts3 Years
  • Labor1 Year
  • Precision 55 mm bore suits exact shaft fits
  • 100 mm outer diameter handles high radial loads
  • 21 mm width fits compact housings
  • 7211C contact angle optimises axial thrust capacity
  • Single-piece box keeps bearing clean until installation

NTN 7211C Angular Contact Ball Bearing

The NTN 7211C is a precision angular contact ball bearing manufactured by ZIBOO for electrician tools and test equipment applications. It features a 55mm inner diameter, 100mm outer diameter and 21mm width to support combined radial and axial loads in a single row design. The red finished unit ships as one pack in a box and carries a three year parts and one year labor coverage.

Sustained load characteristics

Under continuous operation the bearing maintains consistent contact angles to handle simultaneous radial and thrust forces without excessive heat buildup. The angular contact geometry distributes stress evenly across the rolling elements during extended duty cycles typical of power tool spindles and test rigs. Proper lubrication and alignment preserve running accuracy over the service interval.

Dimensional and interface limits

The 55x100x21mm envelope fixes the shaft and housing seats so the bearing only fits bores and shafts machined to those diameters. Axial location requires matching shoulders or snap rings that accommodate the 21mm width. Load ratings and speed ceilings are bound by the 7211C series geometry so any application exceeding those boundaries needs a different series.

Highlights

  • Precision 55 mm bore suits exact shaft fits
  • 100 mm outer diameter handles high radial loads
  • 21 mm width fits compact housings
  • 7211C contact angle optimises axial thrust capacity
  • Single-piece box keeps bearing clean until installation

Specifications

BrandZIBOO
ModelNTN 7211C
TypeTest Equipment
Color/FinishRed
Item Count1 pack
Selling UnitBox
Parts3 Years
Labor1 Year

Questions about this item

Does the 7211C bearing generate noticeable heat or noise during continuous operation?

The 7211C is a precision angular contact ball bearing designed for smooth, low-friction rotation, so it runs quietly with minimal heat buildup under normal loads.

What shaft and housing dimensions are required to install the 55x100x21mm bearing?

You need a 55 mm shaft diameter and a 100 mm housing bore with a 21 mm width to fit the 7211C correctly.

Can the 7211C replace an older bearing with the same 55x100x21mm dimensions?

Yes, the 7211C matches those exact boundary dimensions, so it will interchange with any bearing sharing the 55 mm ID, 100 mm OD and 21 mm width.

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