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NTN HTA011DB/GNUP-21 is a duplex angular contact ball bearing with a straight bore and stamped steel cage. Designed for axial loads in precision machine tool spindles and high-speed applications.
MODEL HTA011DB/GNUP-21
$1,795.29 Each
Prices are subject to change
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Returnable:No
2a
3.0591 in
2B
1.2992 in
B (in)
0.6496
Ball Material
Steel
Ball material
Steel
Bore Type
Round
Bore type
Round
Cage Material
Phenolic
Cage material
Phenolic
Cage Type
Machined
Cage type
Machined
Configuration
Two
Contact angle
40 º
d (in)
2.1654
D (in)
3.5433
d1
2.685 in
D2
3.1811 in
da min
2.5591 in
Db max
3.3071 in
Dynamic Load Rating
7200 lbf
Dynamic load rating
7200 lbf
Enclosure
Open
I.D.
55 mm
Limiting Speed - Grease
10300 RPM
Limiting speed - grease
10300 RPM
Limiting Speed - Oil
13100 RPM
Limiting speed - oil
13100 RPM
Material
High carbon chrome steel
O.D.
90 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
Special precision
Preload
Normal
r (in)
0.0433
r1
0.0236 in
r1as max
0.0236 in
ras max
0.0394 in
Static Load Rating
14400 lbf
Static load rating
14400 lbf
Type
Main Spindle Bearing
Technical Specifications
| Type | Main Spindle Bearing |
|---|---|
| Bore Type | Round |
| Material | High Carbon Chrome Steel |
| Cage Type | Machined |
| Cage Material | Phenolic |
| Ball Material | Steel |
| Limiting Speed - Oil | 13100 RPM |
| Limiting Speed - Grease | 10300 RPM |
| Precision | Special Precision |
| Configuration | Two |
| Preload | Normal |
| Static Load Rating | 14400 lbf64000 N64.00 kN |
| Dynamic Load Rating | 7200 lbf32000 N32.00 kN |
| Enclosure | Open |
| Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
| d | 2.1654 in55.000 mm |
|---|---|
| D | 3.5433 in90.000 mm |
| B | 0.6496 in16.500 mm |
| 2B | 1.2992 in33.000 mm |
| d1 | 2.685 in68.200 mm |
| D2 | 3.1811 in80.800 mm |
| r | 0.0433 in1.100 mm |
| r1 | 0.0236 in0.600 mm |
| Contact Angle | 40 |
| 2a | 3.0591 in77.700 mm |
| da min | 2.5591 in65.000 mm |
| Db max | 3.3071 in84.000 mm |
| ras max | 0.0394 in1.000 mm |
| r1as max | 0.0236 in0.600 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.
| Brand | FAG Bearing |
| Model | 6203RSR |