The NSK 6211C3E Deep Groove Ball Bearing is a high-quality precision single-row bearing from NSK Japan, designed for reliable rotation under radial and moderate axial loads in automotive and industrial applications. With increased internal clearance (C3) and motor-optimized grade (E), this bearing offers smooth, low-noise operation and long service life.

Technical Specifications

Explanation of Codes:

• C3: Increased internal clearance for thermal expansion and heavy-load environments.

• E: Electric motor-grade finishing for low noise and smooth operation.

Product Overview

Deep groove ball bearings are one of the most versatile bearing types, engineered with uninterrupted grooves that support:

✔ Radial loads
✔ Moderate axial loads in both directions
✔ Smooth low-friction rotation
✔ High-speed performance

The NSK 6211C3E combines robust load handling with durability, making it suitable for systems where thermal effects, vibration, or continuous motion are factors.

General Automotive & Vehicle Applications

Because 6211C3E is a standard bearing size, vehicles don’t list it by make/model/year in OEM catalogs. Instead, it is selected by bearing dimensions and application function — meaning you must match the bearing size and internal clearance to the vehicle assembly.

⚙️ Common Automotive Uses Where This Bearing Size May Be Found

The 6211C3E (55×100×21 mm) deep groove ball bearing is often used in automotive systems such as:

• Alternator shafts – supports rotor rotation under load.

• Starter motor supports – stabilizes rotation of armature.

• Accessory belt tensioner / idler pulleys – reduces friction in belt drive.

• Water pump pulleys – smooth rotation of cooling system components.

• Transmission auxiliary shafts – support high-speed rotation in gear assemblies.

• Electric blower / HVAC motor shafts – quiet and low-friction operation.

Because each manufacturer specifies bearings by code, the correct application requires matching the OEM bearing code or checking the service manual for the bearing dimensions (55×100×21 mm) and internal clearance before replacement.

Industrial & Machinery Uses

This bearing is also widely used in industrial and mechanical assemblies:

• Electric motors and generators

• Gearboxes and reducers

• Conveyors and rollers

• Pumps and compressors

• Fans, blowers, and industrial tools
  (industry examples based on deep groove bearing usage and design)

Related Brand & Equivalent Part Numbers

Here are dimension-matched equivalents from other leading brands (same 55×100×21 mm size):

• SKF: 6211/C3 deep groove ball bearing

• NTN: 6211C3 deep groove ball bearing

• FAG: 6211 C3

• KOYO: 6211 C3

• Timken: 6211 C3

Sealing/variant options:

• 6211-2RS / 6211 DD – rubber sealed

• 6211ZZ / 6211-2Z – metal shielded
  (Match sealing type and load conditions to your application before use.)

Fitment & Selection Tips

✔ Confirm dimensions — Inner 55 mm × Outer 100 mm × Width 21 mm.
✔ Match internal clearance — C3 is ideal for heat and rotational loads.
✔ Check OEM bearing code in the vehicle or equipment service manual.
✔ Choose seal/shield variants if moisture, dust, or contamination is a concern.