1203

Tier-one manufacturer — brand supplied may vary ✓ Verified against manufacturer sources
$11.47 USD
$11.47 USD
Sale Sold out
Bore17 mm 0.6693 in
Outside dia.40 mm 1.5748 in
Width12 mm 0.4724 in
TypeSelf-aligning ball bearing
SealingOpen
ClearanceNormal
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Image is for illustration purposes only.

What 1203 means

CodePositionMeaning
1 Type Self-aligning ball bearing
2 Diameter series Diameter series 2 (light)
03 Bore Bore code 03 = 17 mm (codes 00, 01, 02 and 03 are fixed at 10, 12, 15 and 17 mm)

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

1203 specifications

Specification Metric Inch Basis
Bore (d) 17 mm 0.6693 in ISO table for this designation, confirmed by supplier data
Outside diameter (D) 40 mm 1.5748 in Supplier catalogue listing
Width (B) 12 mm 0.4724 in Supplier catalogue listing
Bearing type Self-aligning ball 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

1203 is a self-aligning ball bearing, 17 mm bore × 40 mm OD × 12 mm wide (0.6693 × 1.5748 × 0.4724 in).

Self-aligning ball bearings feature two rows of balls running on a spherical outer ring raceway, allowing the bearing to accommodate angular misalignment between the shaft and housing. The 1203 has a 17 mm bore diameter and belongs to the 12 series.

Related sizes & variants

  • 1200 · 10×30×9 mm · Open
  • 1201 · 12×32×10 mm · Open
  • 1202 · 15×35×11 mm · Open
  • 1204 · 20×47×14 mm · Open
  • 1205 · 25×52×15 mm · Open
  • 1206 · 30×62×16 mm · Open