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NTN KM52 steel locknut with bolt holes, metric thread. Designed for securing bearings onto shafts, used with a lock washer to prevent loosening under vibration. Common in industrial machinery and bearing mounting applications.
MODEL KM52
$738.22 Each
Prices are subject to change
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Returnable:No
B (in)
1.4173
b (in)
0.9449
Bore No of Adapter
52
Bore No. of Adapter
52
Bore Size
10.2362 in
d1
11.8110 in
d2
12.9921 in
d6
10.3150 in
dp
11.0630 in
G
TM260x4
g (in)
12.0472
Grade
Standard
h (in)
0.4724
l (in)
0.7087
Locking Type
Locknut
Lockplate Number
AL52
Material
Steel
Mating Lockwasher
AW52
Number of Slots
8
O.D.
330 mm
r1 max
0.0315 in
s
M10x1.5
Thread Pitch
0.1575 in
Type
Locknut
Technical Specifications
Type | Locknut |
Locking Type | Locknut |
Material | Steel |
Mating Lockwasher | AW52 |
Grade | Standard |
Bore No. of Adapter | 52 |
Lockplate Number | AL52 |
Weight | 17.747 lb8.050 kg |
Dimensional Specifications
| |
Bore Size | 10.2362 in260.000 mm |
d2 | 12.9921 in330.000 mm |
d1 | 11.8110 in300.000 mm |
B | 1.4173 in36.000 mm |
G | TM260x4 |
s | M10x1.5 |
b | 0.9449 in24.000 mm |
h | 0.4724 in12.000 mm |
Number of Slots | 8 |
g | 12.0472 in306.000 mm |
d6 | 10.3150 in262.000 mm |
dp | 11.0630 in281.000 mm |
l | 0.7087 in18.000 mm |
r1 max | 0.0315 in0.800 mm |
Thread Pitch | 0.1575 in4.000 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.
