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NTN 7324 single-row angular contact ball bearing, 120 mm straight bore, 73 series open design. 40° contact angle supports high axial loads in one direction. Suitable for high-speed, high-precision applications including machine tool spindles, pumps, and compressors.
MODEL 7324
$1,910.46 Each
Prices are subject to change
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Returnable: See conditions
Enclosure
Open
I.D.
120 mm
O.D.
260 mm
Width
55 mm
Technical Specifications
| Type | Angular Contact Ball Bearing |
|---|---|
| Bore Type | Round |
| Material | High Carbon Chrome Steel |
| Cage Type | High Strength, 2 piece, Machined |
| Cage Material | Brass |
| Ball Material | Steel |
| Limiting Speed - Oil | 3900 RPM |
| Limiting Speed - Grease | 2900 RPM |
| Precision | ISO Class 0 |
| Configuration | One |
| Static Load Rating | 56500 lbf252000 N252.00 kN |
| Dynamic Load Rating | 55500 lbf246000 N246.00 kN |
| Enclosure | Open |
| Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
| d | 4.7244 in120.000 mm |
|---|---|
| D | 10.2362 in260.000 mm |
| B | 2.1654 in55.000 mm |
| r | 0.1181 in3.000 mm |
| r1 | 0.0433 in1.100 mm |
| Contact Angle | 30 |
| a (Load Center) | 3.2480 in82.500 mm |
| da min | 5.2756 in134.000 mm |
| Da max | 9.6850 in246.000 mm |
| Db max | 9.9606 in253.000 mm |
| ras max | 0.0984 in2.500 mm |
| r1as max | 0.0394 in1.000 mm |
| Double Row Width | 4.3307 in110.000 mm |
| Triple Row Width | 6.4961 in165.000 mm |
| Quadruple Row Width | 8.6614 in220.000 mm |
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.
| Brand | Pramet |
| Model | TN 16EL280UNJ:T8030 |
| Brand | Smith Bearings |
| Model | YR-2-1/2-SS |
