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NTN 7217BL1G is a 72 series single-row angular contact ball bearing with a 85 mm straight bore. Open enclosure with a brass cage. Constructed from high carbon chrome steel for durability in radial and axial load applications.
MODEL 7217BL1G
$300.93 Each
Prices are subject to change
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Returnable:No
a (Load Center)
2.5000 in
B (in)
1.1024
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
One
Contact angle
40 º
D (in)
5.9055
d (in)
3.3465
Da max
5.5118 in
da min
3.7402 in
Db max
5.6890 in
db min
3.5630 in
Double Row Width
2.2047 in
Dynamic Load Rating
20200 lbf
Dynamic load rating
20200 lbf
Enclosure
Open
I.D.
85 mm
Limiting Speed - Grease
4000 RPM
Limiting speed - grease
4000 RPM
Limiting Speed - Oil
5300 RPM
Limiting speed - oil
5300 RPM
Material
High carbon chrome steel
O.D.
150 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Precision
ISO class 0
Quadruple Row Width
4.4094 in
r (in)
0.0787
r1
0.0394 in
r1as max
0.0394 in
ras max
0.0787 in
Static Load Rating
18100 lbf
Static load rating
18100 lbf
Triple Row Width
3.3071 in
Type
Angular Contact Ball Bearing
Technical Specifications
Type | Angular Contact Ball Bearing |
Bore Type | Round |
Material | High Carbon Chrome Steel |
Cage Type | Machined |
Cage Material | Brass |
Ball Material | Steel |
Limiting Speed - Oil | 5300 RPM |
Limiting Speed - Grease | 4000 RPM |
Precision | ISO Class 0 |
Configuration | One |
Static Load Rating | 18100 lbf80500 N80.50 kN |
Dynamic Load Rating | 20200 lbf90000 N90.00 kN |
Enclosure | Open |
Weight | 4.630 lb2.100 kg |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
d | 3.3465 in85.000 mm |
D | 5.9055 in150.000 mm |
B | 1.1024 in28.000 mm |
r | 0.0787 in2.000 mm |
r1 | 0.0394 in1.000 mm |
Contact Angle | 40 |
a (Load Center) | 2.5000 in63.500 mm |
da min | 3.7402 in95.000 mm |
db min | 3.5630 in90.500 mm |
Da max | 5.5118 in140.000 mm |
Db max | 5.6890 in144.500 mm |
ras max | 0.0787 in2.000 mm |
r1as max | 0.0394 in1.000 mm |
Double Row Width | 2.2047 in56.000 mm |
Triple Row Width | 3.3071 in84.000 mm |
Quadruple Row Width | 4.4094 in112.000 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.
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