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NTN HTA040DB/G75P4L is a duplex angular contact ball bearing with a 200 mm straight bore, designed for high-speed main spindle applications. Features a brass cage, open enclosure, and P4 precision class. Constructed from high carbon chrome steel for durability and axial load capacity.
MODEL HTA040DB/G75P4L
$14,358.95 Each
Prices are subject to change
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2a
10.4173 in
2B
3.8976 in
B (in)
1.9488
Ball Material
Steel
Ball material
Steel
Bore Type
Round
Bore type
Round
Cage Material
Brass
Cage material
Brass
Cage Type
Machined
Cage type
Machined
Configuration
Two
Contact angle
40 º
D (in)
12.2047
d (in)
7.8740
d1
9.5669 in
D2
10.9291 in
da min
8.5433 in
Db max
11.811 in
Dynamic Load Rating
54000 lbf
Dynamic load rating
54000 lbf
Enclosure
Open
I.D.
200 mm
Limiting Speed - Grease
3700 RPM
Limiting speed - grease
3700 RPM
Limiting Speed - Oil
2900 RPM
Limiting speed - oil
2900 RPM
Material
High carbon chrome steel
O.D.
310 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 4
Preload
Special preload
r (in)
0.0827
r1
0.0433 in
r1as max
0.0394 in
ras max
0.0787 in
Static Load Rating
153000 lbf
Static load rating
153000 lbf
Type
Main Spindle Bearing
Technical Specifications
Type | Main Spindle Bearing |
Bore Type | Round |
Material | High Carbon Chrome Steel |
Cage Type | Machined |
Cage Material | Brass |
Ball Material | Steel |
Limiting Speed - Oil | 2900 RPM |
Limiting Speed - Grease | 3700 RPM |
Precision | ISO Class 4 |
Configuration | Two |
Preload | Special Preload |
Static Load Rating | 153000 lbf680000 N680.00 kN |
Dynamic Load Rating | 54000 lbf240000 N240.00 kN |
Enclosure | Open |
Weight | 60.407 lb27.400 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 7.8740 in200.000 mm |
D | 12.2047 in310.000 mm |
B | 1.9488 in49.500 mm |
2B | 3.8976 in99.000 mm |
d1 | 9.5669 in243.000 mm |
D2 | 10.9291 in277.600 mm |
r | 0.0827 in2.100 mm |
r1 | 0.0433 in1.100 mm |
Contact Angle | 40 |
2a | 10.4173 in264.600 mm |
da min | 8.5433 in217.000 mm |
Db max | 11.811 in300.000 mm |
ras max | 0.0787 in2.000 mm |
r1as max | 0.0394 in1.000 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.
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