1311K
Tier-one manufacturer — brand supplied may vary ✓ Bore checked against the ISO tableRegular price
$84.62 USD
Regular price
Sale price
$84.62 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
TypeSelf-aligning ball bearing
SealingOpen
ClearanceNormal
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Image is for illustration purposes only.
What 1311K means
| Code | Position | Meaning |
|---|---|---|
1 |
Type | Self-aligning ball bearing |
3 |
Diameter series | Diameter series 3 (medium) |
11 |
Bore | Bore code 11 × 5 = 55 mm |
K |
Bore type | Tapered bore, taper 1:12 (mounts on an adapter or withdrawal sleeve) |
Read from the ISO / ABMA numbering rules and the makers' published suffix conventions. Decode any other number with the bearing number decoder.
1311K 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 | Supplier catalogue listing |
| Width (B) | 29 mm | 1.1417 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 | Tapered bore (1:12) | Stated by the designation | |
| Cage | Steel | Supplier catalogue listing | |
| Tolerance class | Normal (ISO P0 / ABEC 1): no tolerance-class code | Stated by the designation | |
| Material | High carbon chrome steel | Supplier catalogue listing | |
1311K is a self-aligning ball bearing, 55 mm bore × 120 mm OD × 29 mm wide (2.1654 × 4.7244 × 1.1417 in). It has a tapered bore (1:12).
The 1311K is a self-aligning ball bearing with a tapered bore (1:12 taper ratio) designed to accommodate shaft misalignment and deflection. The double-row ball design allows the bearing to compensate for angular misalignment between the shaft and housing while maintaining reliable operation.
1311 K 1300 Series Self-Aligning Ball Bearing
Measurement Type
Metric
Inner Diameter (ID)
55 mm
Outside Diameter (OD)
120 mm
Width
29 mm
Sealing
Open
Precision Class
ABEC 1 | ISO P0
Ball Material
High carbon chrome steel
Cage
Steel
Series
13
Bearing Type
Self-aligning ball bearing
Other Features
Double Row | Self Aligning Ball Bearing | 1:12 Tapered Bore
Component
Assembly
Weight (kg)
1.56
Basic Number
1311
UNSPSC
31171532
