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The NTN KR52LL is a stud type cam follower with a cylindrical outer diameter and a 52 mm bore. It features double rubber seals (LL) for contaminant protection and a standard stud design for direct mounting. This machined ring cam follower is suitable for cam drives, linear motion systems, and conveyor applications.
MODEL KR52LL
$187.00 Each
Prices are subject to change
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Returnable:No
a (in)
0.1575
B (in)
1.0039
B1
2.5984 in
B2
1.5945 in
B3
0.3543 in
Bearing Type
Needle Roller Bearing
C (in)
0.9449
C1
0.0315 in
Cage Material
Pressed Steel
Cage material
Pressed steel
Configuration
One
D (in)
2.0472
D Tolerance
0/-0.0020 in
d1
0.7874 in
d1 Tolerance
0/-0.0008 in
Drive Type
Slot
Drive type
Slot
Dynamic Load Rating
4650 lbf
Dynamic load rating
4650 lbf
e (in)
1.4567
Enclosure
Double Sealed
F (in)
0.9843
G
M20 x 1.5
G1
0.8268 in
Grease nipple size
NIP-B8
I.D.
25 mm
Limiting Speed - Grease
6000 RPM
Limiting speed - grease
6000 RPM
Limiting Speed - Oil
8000 RPM
Limiting speed - oil
8000 RPM
Load Rating of Track
1250 lbf
M (in)
0.3150
Material
Through hardened steel
N (in)
0.3150
O.D.
52 mm
Operating Temperature Range
-40 to 250 °F
Operating temperature range
-40 to 250 ºF
Outside Ring Type
Spherical
Roller Type
Crowned
Roller type
Crowned
Static Load Rating
7550 lbf
Static load rating
7550 lbf
Stud Type
Standard
Stud type
Standard
Thread
Metric
Thread Type
Metric
Torque
98.0 N·m
Type
Cam Follower
Technical Specifications
Type | Cam Follower |
|---|---|
Material | Through Hardened Steel |
Thread Type | Metric |
Cage Material | Pressed Steel |
Limiting Speed - Oil | 8000 RPM |
Limiting Speed - Grease | 6000 RPM |
Roller Type | Crowned |
Stud Type | Standard |
Bearing Type | Needle Roller Bearing |
Outside Ring Type | Spherical |
Enclosure | Double Sealed |
Drive Type | Slot |
Configuration | One |
Torque | 98.0 Nm |
Static Load Rating | 7550 lbf33500 N |
Dynamic Load Rating | 4650 lbf20700 N |
Load Rating of Track | 1250 lbf5550 N |
Operating Temperature Range | -40 to 250 F-40 to 120 C |
Dimensional Specifications
| |
G | M20x1.5 |
|---|---|
B1 | 2.5984 in66.000 mm |
B2 | 1.5945 in40.500 mm |
D | 2.0472 in52.000 mm |
D Tolerance | 0/-0.0020 in0/-0.050 mm |
B | 1.0039 in25.500 mm |
C | 0.9449 in24.000 mm |
d1 | 0.7874 in20.000 mm |
d1 Tolerance | 0/-0.0008 in0/-0.021 mm |
G1 | 0.8268 in21.000 mm |
e | 1.4567 in37.000 mm |
B3 | 0.3543 in9.000 mm |
a | 0.1575 in4.000 mm |
F | 0.9843 in25.000 mm |
C1 | 0.0315 in0.800 mm |
n | 0.3150 in8.000 mm |
m | 0.3150 in8.000 mm |
Grease Nipple Size | NIP-B8 |
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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