N311-C3
Tier-one manufacturer — brand supplied may vary ✓ Dimensions checked: ISO table and supplier data agreeRegular price
$123.00 USD
Regular price
Sale price
$123.00 USD
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Bore55 mm
2.1654 in
Outside dia.120 mm
4.7244 in
Width29 mm
1.1417 in
TypeCylindrical roller bearing
SealingOpen
ClearanceC3
Ships separately from our European warehouse — shipping from $79, quoted at checkout
Ships from our European partner stock — allow 5–8 business days
Ships from our European partner stock — allow 5–8 business days
Image is for illustration purposes only.
What N311-C3 means
| Code | Position | Meaning |
|---|---|---|
N |
Type | Cylindrical roller bearing, type N: two flanges on the inner ring, none on the outer ring |
3 |
Diameter series | Diameter series 3 (medium) |
11 |
Bore | Bore code 11 × 5 = 55 mm |
C3 |
Internal clearance | C3: radial internal clearance greater than Normal |
Read from the ISO / ABMA numbering rules and the makers' published suffix conventions. Decode any other number with the bearing number decoder.
N311-C3 specifications
| Specification | Metric | Inch | Basis |
|---|---|---|---|
| Bore (d) | 55 mm | 2.1654 in | ISO table for this designation, confirmed by supplier data |
| Outside diameter (D) | 120 mm | 4.7244 in | ISO table for this designation, confirmed by supplier data |
| Width (B) | 29 mm | 1.1417 in | ISO table for this designation, confirmed by supplier data |
| Bearing type | Cylindrical roller bearing | Stated by the designation | |
| Seals / shields | Open (no seals or shields) | Stated by the designation | |
| Internal clearance | C3 (greater than Normal) | Stated by the designation | |
| Tolerance class | Normal (ISO P0 / ABEC 1): no tolerance-class code | Stated by the designation | |
N311-C3 is a cylindrical roller bearing, 55 mm bore × 120 mm OD × 29 mm wide (2.1654 × 4.7244 × 1.1417 in). It has C3 internal clearance.
The N311-C3 is a single row cylindrical roller bearing with a 55mm bore diameter, 120mm outside diameter, and 29mm width. This bearing features C3 radial internal clearance, providing greater clearance than standard for applications requiring compensation for thermal expansion or shaft/housing fits that reduce operating clearance.
Inner Diameter (ID)
55 mm
Outside Diameter (OD)
120 mm
Width
29 mm
Series
N3
Bearing Type
Cylindrical roller bearing
