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The NTN 1R30X37X18 is an inner ring for machined ring needle roller bearings, with a 30 mm bore. Made from high carbon chrome steel, this race provides a hardened, precision-ground surface for needle roller assemblies. Used in gearboxes, pumps, and industrial machinery where compact radial load support is required.
MODEL 1R30X37X18
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$30.20 Each
Prices are subject to change
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Brand Minimum Order Quantity: 3
Typically Ships in: 1 day
Returnable:No
B (in)
0.7087
Bore type
Round
Bore Type
Round
d (in)
1.1811
da min
1.2598 in
F (in)
1.4567
I.D.
30 mm
Material
High Carbon Chrome Steel
O.D.
37 mm
r (in)
0.0118
ras max
0.0118 in
t (in)
0.0709
Tolerance
ISO Class 0 (RBEC 1)
Type
Inner Ring
Technical Specifications
Type | Inner Ring |
|---|---|
Bore Type | Round |
Material | High Carbon Chrome Steel |
Tolerance | ISO Class 0 (RBEC 1) |
Dimensional Specifications
| |
d | 1.1811 in30.000 mm |
|---|---|
F | 1.4567 in37.000 mm |
B | 0.7087 in18.000 mm |
r | 0.0118 in0.300 mm |
t | 0.0709 in1.800 mm |
da min | 1.2598 in32.000 mm |
ras max | 0.0118 in0.300 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.
