6328 M Bearing

 

d	140 mm	Bore diameter
D	300 mm	Outside diameter
B	62 mm	Width
d1	≈190.6 mm	Shoulder diameter
D1	≈248.7 mm	Shoulder diameter
r1,2	min.4 mm	Chamfer dimension

da	min.157 mm	Diameter of shaft abutment
Da	max.283 mm	Diameter of housing abutment
ra	max.3 mm	Radius of shaft or housing fillet

Basic dynamic load rating	C	251 kN
Basic static load rating	C0	245 kN
Fatigue load limit	Pu	7.1 kN
Reference speed		4 800 r/min
Limiting speed		4 300 r/min
Minimum load factor	kr	0.03
Calculation factor	f0	13.6

Tolerance class

Dimensional tolerances	Normal
Radial run-out	Normal

 

Features:

Deep Grooves: The inner and outer rings feature deep, uninterrupted raceways. This design allows the bearing to accommodate radial and some axial loads.

Balls as Rolling Elements: Hardened steel balls are used as the rolling elements, providing smooth rotation and low friction.

Cage (Separator): A cage, typically made of steel or brass, separates the balls and prevents them from contacting each other. This reduces friction, heat generation, and wear.

Open or Sealed Configurations: 6328 M bearings are available in open configurations (without seals) or with seals (ZZ, 2RS, etc.) for protection against contaminants. The "M" designation often refers to a machined brass cage.

Advantages:

Versatility: Suitable for a wide range of applications due to their ability to handle both radial and axial loads.

High Speed Capability: The low friction design allows for relatively high rotational speeds.

Low Noise and Vibration: The smooth rolling action of the balls contributes to quiet and smooth operation.

Relatively Low Cost: Deep groove ball bearings are generally more economical compared to other bearing types like cylindrical or spherical roller bearings.

Simple Design and Easy Mounting: Their straightforward design makes them easy to install and maintain.

Applications:

The 6328 M bearing finds use in various industries and applications, including:

Electric Motors: Used extensively in electric motors of various sizes, from small appliances to large industrial motors.

Pumps: Employed in various types of pumps, including centrifugal, gear, and piston pumps.

Gearboxes: Used in gearboxes to support the rotating shafts and gears.

Agricultural Machinery: Found in tractors, harvesters, and other agricultural equipment.

Conveyors: Used in conveyor systems to support rollers and pulleys.

Automotive Applications: Used in various automotive components, such as alternators, starters, and water pumps.

Important Considerations:

While 6328 M bearings offer many advantages, it's crucial to consider the following:

Load Capacity: While capable of handling some axial loads, they are primarily designed for radial loads. Exceeding the axial load limit can significantly reduce bearing life.

Operating Temperature: High operating temperatures can affect bearing performance and lubricant life.

Lubrication: Proper lubrication is essential for optimal performance and longevity. The choice of lubricant depends on the operating conditions.

Sealing: If the bearing is operating in a contaminated environment, sealed bearings are recommended to prevent ingress of dirt and debris.

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