1211-K
Tier-one manufacturer — brand supplied may vary ✓ Bore checked against the ISO tableRegular price
$49.02 USD
Regular price
Sale price
$49.02 USD
Unit price
per
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Bore55 mm
2.1654 in
Outside dia.100 mm
3.937 in
Width21 mm
0.8268 in
TypeSelf-aligning ball bearing
SealingOpen
ClearanceNormal
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Image is for illustration purposes only.
What 1211-K means
| Code | Position | Meaning |
|---|---|---|
1 |
Type | Self-aligning ball bearing |
2 |
Diameter series | Diameter series 2 (light) |
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.
1211-K specifications
| Specification | Metric | Inch | Basis |
|---|---|---|---|
| Bore (d) | 55 mm | 2.1654 in | ISO table for this designation, confirmed by supplier data |
| Outside diameter (D) | 100 mm | 3.937 in | Supplier catalogue listing |
| Width (B) | 21 mm | 0.8268 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 | |
| Tolerance class | Normal (ISO P0 / ABEC 1): no tolerance-class code | Stated by the designation | |
1211-K is a self-aligning ball bearing, 55 mm bore × 100 mm OD × 21 mm wide (2.1654 × 3.937 × 0.8268 in). It has a tapered bore (1:12).
Self-aligning ball bearings are double-row bearings with a spherical outer ring raceway that allows the bearing to compensate for angular misalignment between the shaft and housing. The 1211-K features a tapered bore (1:12 taper) for mounting directly onto tapered shafts or adapter sleeves, providing simplified installation and secure positioning.
Measurement Type
Metric
Inner Diameter (ID)
55 mm
Outside Diameter (OD)
100 mm
Width
21 mm
Sealing
Open
Precision Class
ISO P0
Series
12
Bearing Type
Self-aligning ball bearing
Other Features
Double Row | Self Aligning Ball Bearing
Component
Assembly
Weight (kg)
0.679
Basic Number
1211
UNSPSC
31171504
