Overview
The Fafnir 211KDD is a single-row deep groove ball bearing designed for general industrial machinery and motion control applications. Manufactured by Timken’s Fafnir division, this bearing features a 55mm bore diameter, 100mm outside diameter, and 21mm width. The deep-groove design enables the bearing to handle both radial and axial loads from either direction, making it suitable for versatile applications requiring reliable rotational performance.
Key Features
- Deep-groove construction for radial and axial load capacity
- Conrad-type bearing design for high-speed operation
- Precision ball complement with steel cage
- Industrial-grade durability and long service life
- Compact 55×100×21mm footprint fits standard machinery mounting
Technical Specifications
The following specifications define the Fafnir 211KDD bearing performance and installation requirements:
- Bore Diameter (d): 55 mm
- Outside Diameter (D): 100 mm
- Width (B): 21 mm
- Bearing Type: Single-row radial deep-groove ball bearing
- Design Series: Fafnir 200K/9100K standard series
- Cage Material: Steel
- Load Direction: Radial and axial (bidirectional)
Typical Applications
The Fafnir 211KDD serves industries requiring durable, cost-effective bearing solutions:
- Industrial machinery and equipment
- Electric motor support bearings
- Conveyor systems and drive shafts
- Pump and fan assemblies
- Gearbox assemblies in transmission systems
- General rotating machinery
Compatibility & Replacements
Compatible With
- Standard bearing housings rated for 55mm bore
- Motor shafts, spindles, and drive systems
- Industrial equipment requiring deep-groove ball bearings
- Timken/Fafnir bearing-compatible machinery
Replaces / Drop-In Replacement For
- SKF 6211 series bearings (equivalent geometry)
- NSK 6211 series bearings
- INA/FAG 6211 series bearings
- Equivalent to 6211ZZ designation
Works With
- Standard metric bearing housings
- Shaft mounting hardware and retaining rings
- Lubrication systems (grease or oil)
- Industrial bearing analysis and diagnostic software
