Double Row Angular Contact Ball Bearings (General) 3311 A

The 3311 A is a double-row angular contact ball bearing with a 55mm bore and 120mm outer diameter, crafted from sturdy chrome steel. It manages radial loads up to 25200 lbf and operates smoothly at speeds reaching 5300 RPM.

Its open design simplifies lubrication, while the stainless steel cage enhances durability. The bearing performs reliably in temperatures ranging from -30°C to 110°C.

This model is interchangeable with SKF bearings, offering a practical solution for replacements. Suitable for machinery requiring high radial load capacity, such as pumps or industrial gearboxes.

Weighing 2.65kg, it’s robust yet manageable for its size. Compliant with RoHS and REACH standards, ensuring safe and eco-friendly use.

The double-row design provides added stability, making it ideal for applications with combined loads. Its precision tolerance class (P6) ensures consistent performance in demanding conditions.

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Description

Features

Application

Q&A

Product Parameters

Part Number 3311 A
Brand TFL & OEM
Interchangeable With SKF
System of Measurement Metric
Bearing Type Ball
For Load Direction Angular Contact
Construction Double Row
Seal Type Open
Bore Dia 55 mm
Bore Dia Tolerance -0.012mm to 0
Outer Dia 120 mm
Outer Dia Tolerance -0.013mm to 0
Width 49.2 mm
Width Tolerance -0.05mm to 0
Chamfer Dimension 2 mm
Distance Pressure Point (a) 73 mm
Ring Material Chrome Steel
Ball Material Chrome Steel
Cage Material Stainless Steel
Dynamic Radial Load 25200 lbf
Static Radial Load 18338 lbf
Max Speed 5300 rpm
Lubrication Lubricated
Temperature Range -30° to 110 °C
Tolerance Class P6 (ABEC-3)
ROHS Compliant
REACH Compliant
Weight 2.65 kg

Double Row Angular Contact Ball Bearings (General) 3311 A dimension drawing

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Features

Performance Features of 3311 A Bearing

3311 A Bearing is built with chrome steel rings and balls, offering strong resistance to radial loads.
Its dynamic radial load capacity reaches 25200 lbf, ensuring reliable performance in demanding applications.

The stainless steel cage maintains ball alignment, reducing wear and extending service life.
With a maximum speed of 5,300 rpm, it balances durability and efficiency for various industrial uses.

3311 A Bearing operates smoothly in temperatures ranging from -30° to 110°C.
Its double-row design provides stability and precision in angular contact applications.

Application

Common Applications of 3311 A Bearing
3311 A Bearing is widely used in industrial machinery, especially in applications that require handling combined radial and axial loads, such as pumps and gearboxes. Its double-row design provides stability and reduces the need for frequent adjustments.

In the automotive sector, 3311 A Bearing is often found in wheel hubs and transmission systems, where its angular contact capability ensures smooth performance. The chrome steel construction adds durability, making it suitable for high-load conditions.

For automation systems, 3311 A Bearing supports robotic arms and conveyor belts, offering reliable movement under varying loads. The open seal type allows for easy lubrication, extending its service life in continuous operations.

Medical imaging devices also benefit from 3311 A Bearing’s precision, as it ensures quiet and smooth rotation in scanners. The stainless steel cage enhances corrosion resistance, which is essential in sterile environments.

In household appliances like washing machines, 3311 A Bearing provides quiet and efficient operation. Its metric sizing ensures compatibility with a range of European and Asian models, making it a versatile choice.