We never sell your data to third parties
NTN BST20X47-1BP4 precision angular contact thrust ball bearing for ball screw support. 20 mm bore, 47 mm outside diameter, open design. Single-row bearing provides high axial rigidity and accuracy for machine tool feed drives and positioning systems.
MODEL BST20X47-1BP4
$289.21 Each
Prices are subject to change
FREE SHIPPING ON ORDERS OVER $100
Select Quantity
Typically Ships in: 1 day
Returnable:No
B (in)
0.5906
Ball Material
Steel
Ball material
Steel
Bore Type
Round
Bore type
Round
Cage Material
Nylon
Cage material
Nylon
Cage Type
Fiber Glass Reinforced
Cage type
Fiber glass reinforced
Configuration
One
Contact angle
60 º
D (in)
1.8504
d (in)
0.7874
d1
1.1772 in
D1
1.4606 in
D2
1.6220 in
d2
1.0118 in
Dynamic Load Rating
5450 lbf
Dynamic load rating
5450 lbf
Enclosure
Open
I.D.
20 mm
Material
High carbon chrome steel
O.D.
47 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 4
Preload
Heavy
r (in)
0.0394
r1
0.0236 in
Seal material
None
Seal type
None
Space Capacity (Single Row)
0.1299 in³
Static Load Rating
8450 lbf
Static load rating
8450 lbf
Type
Angular Contact Thrust Ball Bearing for Ball Screws
Technical Specifications
| Type | Angular Contact Thrust Ball Bearing for Ball Screws |
|---|---|
| Bore Type | Round |
| Material | High Carbon Chrome Steel |
| Cage Type | Fiber Glass Reinforced |
| Cage Material | Nylon |
| Ball Material | Steel |
| Space Capacity (Single Row) | 3.300 cm³0.1299 in³ |
| Seal Type | None |
| Seal Material | None |
| Precision | ISO Class 4 |
| Configuration | One |
| Preload | Heavy |
| Static Load Rating | 8450 lbf37500 N37.50 kN |
| Dynamic Load Rating | 5450 lbf24300 N24.30 kN |
| Enclosure | Open |
| Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
|
| |
| d | 0.7874 in20.000 mm |
|---|---|
| D | 1.8504 in47.000 mm |
| B | 0.5906 in15.000 mm |
| d1 | 1.1772 in29.900 mm |
| d2 | 1.0118 in25.700 mm |
| D1 | 1.4606 in37.100 mm |
| D2 | 1.6220 in41.200 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.
#1495658
Brand
Koyo Bearing
Model
SAC2047BG
| Brand | Allen Bradley |
| Model | 140U-J6D3-D17 |
| Brand | Wiegmann |
| Model | SC243006G |
