21308

Tier-one manufacturer — brand supplied may vary ✓ Bore checked against the ISO table
$60.95 USD
$60.95 USD
Sale Sold out
Bore40 mm 1.5748 in
Outside dia.90 mm 3.5433 in
Width23 mm 0.9055 in
TypeSpherical roller bearing
SealingOpen
ClearanceNormal
Ships separately from our European warehouse — shipping from $79, quoted at checkout
Ships from our European partner stock — allow 5–8 business days
  • 21308 — illustration
1 1

Image is for illustration purposes only.

What 21308 means

CodePositionMeaning
2 Type Spherical roller bearing
1 Width series Width series 1
3 Diameter series Diameter series 3 (medium)
08 Bore Bore code 08 × 5 = 40 mm

Read from the ISO / ABMA numbering rules and the makers' published suffix conventions. Decode any other number with the bearing number decoder.

21308 specifications

Specification Metric Inch Basis
Bore (d) 40 mm 1.5748 in ISO table for this designation, confirmed by supplier data
Outside diameter (D) 90 mm 3.5433 in Supplier catalogue listing
Width (B) 23 mm 0.9055 in Supplier catalogue listing
Bearing type Spherical roller bearing Stated by the designation
Seals / shields Open (no seals or shields) Stated by the designation
Internal clearance Normal (CN): no clearance code in the designation Stated by the designation
Bore Cylindrical (straight) bore Stated by the designation
Tolerance class Normal (ISO P0 / ABEC 1): no tolerance-class code Stated by the designation

21308 is a spherical roller bearing, 40 mm bore × 90 mm OD × 23 mm wide (1.5748 × 3.5433 × 0.9055 in).

The 21308 is a spherical roller bearing with a 40mm bore diameter, featuring a double row of barrel-shaped rollers running on a common spherical outer ring raceway. This self-aligning design accommodates shaft deflection and misalignment while supporting heavy radial loads and moderate thrust loads in both directions.

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