1220-KM
1200 Series Self Aligning Ball Bearings
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Part No.
Part No.
1220-KM
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
3.7 kg
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
100 mm
Bore diameter tolerance
-0.02mm to 0
Bore type
Taper 1:12
Outside diameter
180 mm
Outside diameter tolerance
-0.025mm to 0
Width
34 mm
Width tolerance
-0.2mm to 0
Chamfer dimension
2.1 mm
Inner Ring Dimensions
Shoulder diameter inner ring
127 mm
Outer Ring Dimensions
Shoulder diameter outer ring
155.8 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
15502 lbf
Radial static load rating
6750 lbf
Limiting speed
4.8 X 1000 rpm
Lubrication
Lubricated
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Brass
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 238.35
/ each
In Stock
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1220-KM Bearing Product Overview & Core Advantages
The 1220-KM is a metric double row angular contact ball bearing featuring a 1:12 tapered bore for precise shaft mounting. Engineered for demanding applications, this bearing excels in handling combined radial loads with high rigidity due to its double-row design. Manufactured from high-grade chrome steel with a brass cage, it delivers reliable performance in high-speed operations up to 4,800 rpm. Its open design, pre-lubricated and with standard CN radial internal clearance, ensures optimal performance across a wide temperature range from -30°C to 110°C, making it a robust solution for precision machinery.
1220-KM Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance |
|---|---|---|
| -KM | Tapered Bore (1:12) | Enables precise interference fit on the shaft, enhancing stability and minimizing slippage under heavy loads. |
| (No Seal Suffix) | Open (Unsealed) | Allows for high-speed operation and custom lubrication regimes, suitable for controlled environments. |
1220-KM Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball bearing construction provides superior radial stiffness and can accommodate significant combined loads, ensuring stable operation under varying force conditions.
- Precision Tapered Bore: The 1:12 taper facilitates exact mounting and dismounting, allowing for controlled preload adjustment and improved rotational accuracy.
- High-Speed Capability: The robust brass cage maintains ball alignment and reduces friction, supporting a limiting speed of 4,800 rpm for dynamic applications.
- Material & Durability: Components made from chrome steel offer high hardness and wear resistance, while the CN radial clearance provides optimal internal fit for general operating conditions.
- Pre-Lubricated & Ready-to-Use: Factory-applied lubrication ensures immediate operation and reduces initial setup time, compatible within the specified temperature range.
1220-KM Bearing Typical Application Areas
- Industrial Gearboxes and power transmission systems requiring high radial load capacity and precise shaft alignment.
- Machine Tool Spindles and other precision machinery where high rigidity and tapered bore mounting are critical for accuracy.
- Material Handling Equipment such as conveyor pulleys and heavy-duty rollers.
- Pumps and Compressors operating at moderate to high speeds with combined loading conditions.
- Agricultural and Construction Machinery components demanding robust bearing performance in harsh environments.
