NU311-C4
Tier-one manufacturer — brand supplied may vary ✓ Dimensions checked: ISO table and supplier data agreeRegular price
$89.95 USD
Regular price
Sale price
$89.95 USD
Unit price
per
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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
ClearanceC4
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 NU311-C4 means
| Code | Position | Meaning |
|---|---|---|
NU |
Type | Cylindrical roller bearing, type NU: two flanges on the outer ring, none on the inner ring (inner ring can float axially) |
3 |
Diameter series | Diameter series 3 (medium) |
11 |
Bore | Bore code 11 × 5 = 55 mm |
C4 |
Internal clearance | C4: radial internal clearance greater than C3 |
Read from the ISO / ABMA numbering rules and the makers' published suffix conventions. Decode any other number with the bearing number decoder.
NU311-C4 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 | C4 (greater than C3) | Stated by the designation | |
| Tolerance class | Normal (ISO P0 / ABEC 1): no tolerance-class code | Stated by the designation | |
NU311-C4 is a cylindrical roller bearing, 55 mm bore × 120 mm OD × 29 mm wide (2.1654 × 4.7244 × 1.1417 in). It has C4 internal clearance.
The NU311-C4 is a single-row cylindrical roller bearing with dimensions of 55mm bore, 120mm outside diameter, and 29mm width. This bearing features C4 internal radial clearance, which is greater than C3 and suitable for applications with thermal expansion or shaft deflection requirements.
Inner Diameter (ID)
55 mm
Outside Diameter (OD)
120 mm
Width
29 mm
Series
NU3
Bearing Type
Cylindrical roller bearing
