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NTN BST30X62-1BDBTP4 is a precision ball screw support bearing with a 30 mm bore. This triple-row angular contact thrust ball bearing features a DBT arrangement (back-to-back) and an open design, providing high axial rigidity and load capacity for ball screw applications in machine tools and precision positioning systems.
MODEL BST30X62-1BDBTP4
$1,063.97 Each
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3B
1.7717 in
B (in)
0.5906
Bore Type
Round
Bore type
Round
Cage Material
Resin
Cage material
Resin
Cage Type
Molded
Cage type
Molded
Configuration
Three
Contact angle
60 º
d (in)
1.1811
D (in)
2.4409
D1
2.0315 in
d1
1.7480 in
d2
1.5827 in
D2
2.1929 in
Dynamic Load Rating
10700 lbf
Dynamic load rating
10700 lbf
Enclosure
Open
I.D.
30 mm
Material
High carbon chrome steel
O.D.
62 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 4
r (in)
0.0394
r1
0.0236 in
Static Load Rating
26500 lbf
Static load rating
26500 lbf
Type
Ball Screw Support Bearing
Technical Specifications
| Type | Ball Screw Support Bearing |
|---|---|
| Bore Type | Round |
| Material | High Carbon Chrome Steel |
| Cage Type | Molded |
| Cage Material | Resin |
| Precision | ISO Class 4 |
| Configuration | Three |
| Static Load Rating | 26500 lbf118000 N118.00 kN |
| Dynamic Load Rating | 10700 lbf47500 N47.50 kN |
| Enclosure | Open |
| Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
| d | 1.1811 in30.000 mm |
|---|---|
| D | 2.4409 in62.000 mm |
| B | 0.5906 in15.000 mm |
| 3B | 1.7717 in45.000 mm |
| d1 | 1.7480 in44.400 mm |
| d2 | 1.5827 in40.200 mm |
| D1 | 2.0315 in51.600 mm |
| D2 | 2.1929 in55.700 mm |
| r | 0.0394 in1.000 mm |
| r1 | 0.0236 in0.600 mm |
| Contact Angle | 60 |
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.
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