Description
IBC CB7211.E.T.2RSZ.P4A.UM — Sealed Super-Precision Spindle Bearing
Sealed Super-Precision Spindle Bearing from IBC’s super-precision range, for grinding, milling and high-speed machine-tool spindles where running accuracy and maintenance-free operation are required. Universally matchable for paired or multi-bearing arrangements. Sold per bearing — order the quantity your arrangement requires.
Specifications
- Brand: IBC
- Designation: CB7211.E.T.2RSZ.P4A.UM
- Type: Sealed Super-Precision Spindle Bearing
- Bore (d): 55 mm
- Outside diameter (D): [confirm from datasheet] mm
- Width (B): [confirm from datasheet] mm
- Contact angle: 25°
- Precision class: P4 (≈ ABEC 7)
- Preload: medium, universal matching
- Cage: machined phenolic-resin cage
- Sealing: Sealed both sides, grease-filled for life
Suffix breakdown — what you are actually buying
- Sealed — integrated seals retain the for-life grease charge and exclude coolant mist and swarf, removing the relubrication interval and protecting the raceways in contaminated CNC environments.
- 25° contact angle — higher axial stiffness than the 15° variant; suited to the fixed/locating spindle position and higher axial cutting loads.
- Machined phenolic-resin cage — low mass and quiet at speed; the standard for high-speed spindle service.
- P4 — ISO precision class (≈ ABEC 7) with restricted running tolerances for low radial and axial runout and repeatable concentricity.
- medium preload, universal matching — mounts in DB/DF/DT arrangements to the designed preload when clamped.
- Full designation — supplied and verified exactly as specified: CB7211.E.T.2RSZ.P4A.UM.
What this means on the spindle
- High rigidity: defined contact angle and preload hold the shaft against axial and radial cutting forces, protecting tolerance under load.
- Low runout: super-precision running accuracy keeps concentricity tight for surface finish and tool life.
- Long service life: sealed for-life grease and precision raceways extend service intervals and reduce failures.
10+ Years FAG Bearing Specialist Support
Every order is checked by a specialist with over a decade in FAG precision bearings. Send us the full designation and we will verify every prefix and suffix — contact angle, cage, precision class, preload and sealing — so the part you receive is an exact match for your spindle, not an approximate substitute. FAG, INA (Schaeffler Group), SKF, NSK and IBC references are supplied as 100% genuine product, with documentation available on request and express cross-border shipping to the UK and EU.