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Deep Groove Ball Bearings: The Industry Default and When to Reach for Something Else
If you pulled a bearing off general industrial equipment at random, there’s a good chance
Availability:
1 in stock
Double-row cylindrical roller bearing, 130 x 200 x 52 mm, 1:12 tapered bore, machined brass cage, C1 clearance, SP precision. Two roller rows.
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$573.56
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| MFR / Brand | SKF |
|---|---|
| MPN | NN 3026 KMC/C481 |
| Model | NN 3026 K M C481 |
| Bearing Type | Cylindrical Roller Bearing, Open |
| ID | 130 mm |
| OD | 200 mm |
| Width | 52 mm |
| Material | Chrome Steel |
|---|---|
| Series | NN 30 |
| Lubricant | Oil Preservative |
| Base Number | NN 3026 |
| Industry Terms | Spindle bearing; double row cylindrical roller bearing; tapered bore roller bearing; machine tool spindle bearing; precision roller bearing |
| Application Types | Machine tool spindles; lathe and milling spindles; heavy radial load precision spindles |
| Bore Shaft Size | 130 mm |
| Mpn Variants | NN3026KMC481; NN-3026-KMC/C481; NN 3026 K M C481; NN-3026-K-M-C481; NN3026KMC/C481; NN3026KM; NN3026 |
| Dynamic Load Rating | 286 kN |
| Static Load Rating | 480 kN |
| Rolling Elements | Cylindrical Rollers |
| Number Of Rows | 2 |
| Bore Type | Tapered 1:12 |
| Harmonization Code | 8482.50.00.00 |
| Part Number | NN 3026 KMC/C481 |
| Cross Reference 1 | FAG NN3026-AS-K-M-SP – standard spec, not C481 |
|---|---|
| Cross Reference 2 | NSK NN3026MBKRE44 – standard spec, not C481 |
| Cross Reference 3 | SKF NN 3026 – straight bore, not tapered |
SKF NN 3026 KMC/C481 double row cylindrical roller bearing. Bore: 130 mm, tapered 1:12. Outside diameter: 200 mm. Width: 52 mm. Series: NN 30. Two rows of cylindrical rollers, machined brass cage, open.
NN: double row cylindrical roller design. 3026: NN 30 series, 130 mm bore. K: tapered bore, 1:12 taper. M: machined brass cage. C in the MC group: a cage execution variant. C481: a special internal specification held to a customer drawing.
Basic dynamic load rating: 286 kN (64,295 lbf). Basic static load rating: 480 kN (107,908 lbf). On cylindrical rollers the static rating sits well above the dynamic rating, and that is the normal relationship for the type. Two rows of rollers in line contact give this bearing very high radial capacity and very high radial stiffness for its section. Limiting speed: 5,600 r/min. Precision class SP, with running accuracy held to match.
The bore is tapered at 1:12 and seats directly on a matching tapered spindle journal. Radial clearance is set by the axial drive-up distance on the taper, which is what allows a very fine clearance setting on a machine tool spindle. Internal clearance class C1, the tightest of the standard super-precision classes.
Cylindrical rollers carry radial load. The ribs on the inner ring locate the roller sets, and axial location for the shaft comes from a separate bearing in the arrangement.
One bearing. Mass: 5.49 kg (12.1 lbs).
130 x 200 x 52 mm with a 1:12 tapered bore and machined brass cage from other makers: FAG NN3026-AS-K-M-SP, NSK NN3026MBKRE44; neither carries the SKF C481 special specification. The straight-bore NN 3026 – same section, not tapered. Searchable forms: NN3026KMC481, NN-3026-KMC/C481, NN 3026 K M C481, NN-3026-K-M-C481, NN3026KM, NN3026.
$144.56
12 in stock
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