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The SKF QJ 324 N2MA is a 120mm bore four-point angular contact ball bearing with a machined brass cage (MA). Designed for combined radial and axial loads in both directions, it is suitable for pumps, compressors, and industrial gearboxes.
MODEL QJ 324 N2MA
$3,132.83 Each
Prices are subject to change
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Typically Ships in: 1 day
Returnable:No
Axial Internal Clearance
CN
Basic Dynamic Load Rating
415 kN
Basic Static Load Rating
530 kN
Bearing Material
Bearing steel
Bearing Outer Ring Locating Feature
Locating slot
Bore Diameter
120 mm
Cage
Machined (solid)
Coating
Without
Contact Angle
35 °
Contact Type
Four-point contact
Dimension Type
Metric
Inner Diameter (mm)
120.000
Limiting Speed
4500 r/min
Lubricant
None
Lubricant (in Bearing)
None
Matched Arrangement
No
Material/Treatment
Bearing steel
Number of Rows
1
O.D. (in)
10 2/9
Outer Diameter (mm)
260.000
Pack Height
61 mm
Pack Length
285 mm
Pack Width
285 mm
Relubrication Feature
Without
Ring Type
Two-piece inner ring
Sealing
None
SKF Performance Class
SKF Explorer
Type
Four-point contact
Universal Matching Bearing
No
Width
55 mm
Width (mm)
55.000
How do I choose the right type of bearing for my application?
Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints. For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials. In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.
What is the difference between deep groove and angular contact ball bearings?
Deep groove ball bearings are the most common type. They’re designed to handle mainly radial loads, but they can also take some axial load in both directions. They’re simple, versatile, and used in everything from motors to conveyors. Angular contact ball bearings are built for combined loads, especially where there’s significant axial force in one direction. They’re often used in pairs and are common in higher precision or higher load applications like pumps and gearboxes. If your load is mostly radial, go deep groove. If axial load matters more, angular contact is usually the better choice.
Disclaimer: The return policy information shown below is merely an excerpt from SKF's General Conditions of Sale.
RETURN OF GOODS FOR CREDIT
Goods will not be accepted for return without prior written approval from SKF. The return freight must be prepaid by the Buyer. Unless return of Goods is due to Supplier error, Goods returned will be subject to a credit service fee of $25.00 or 15% of the credit value, whichever is greater. An additional service fee may apply is further inspection is required at the discretion of SKF