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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
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1 in stock
Double-row cylindrical roller bearing, 105 mm 1:12 tapered bore x 160 mm OD x 41 mm wide, machined brass M cage, FAG SP special precision for spindles.
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$298.32
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| MFR / Brand | FAG |
|---|---|
| MPN | NN3021KM.SP |
| Model | NN 3021 K M SP / NN3021-AS-K-M-SP |
| Bearing Type | Cylindrical Roller Bearing, Open |
| ID | 105 mm |
| OD | 160 mm |
| Width | 41 mm |
| Mpn Variants | NN3021KM.SP, NN3021K.M.SP, NN-3021-K-M-SP, NN3021KMSP, NN3021 |
|---|---|
| Precision Class | SP (FAG special precision) |
| Series | NN30 |
| Rolling Elements | Cylindrical Roller |
| Cage Material | Machined brass |
| Number Of Rows | 2 |
| Bore Type | Tapered 1:12 |
| Cross Reference 1 | SKF NN 3021 K/SP |
|---|---|
| Cross Reference 2 | NSK NN3021MBKR |
| Cross Reference 3 | NTN NN3021K - check precision class |
| Cross Reference 4 | FAG NN3021-D-K-TVP-SP-XL - polyamide cage |
FAG NN3021K.M.SP double-row super-precision cylindrical roller bearing with a 1:12 tapered bore and machined brass cage. Bore Diameter: 105 mm. Outside Diameter: 160 mm. Width: 41 mm. Rolling Elements: Cylindrical Roller. Number Of Rows: 2.
NN — double-row cylindrical roller bearing, ribs on the inner ring, rib-free separable outer ring.
30 — 30 dimension series.
21 — bore code, 21 x 5 = 105 mm bore.
K — tapered bore, taper 1:12.
M — machined brass cage.
SP — FAG special precision class for machine tool spindles.
Bore Type: Tapered 1:12. Cage Material: Machined brass. Precision Class: SP. The tapered bore mounts directly on a tapered spindle journal; drive-up on the taper sets the radial clearance or preload. The double roller row gives high radial rigidity and carries no axial load.
Unit Quantity: 1 Pc. Complete bearing, inner ring with rollers and outer ring.
SKF NN 3021 K/SP and NSK NN3021MBKR follow the same 105 x 160 x 41 mm tapered-bore double-row design. NTN NN3021K shares the envelope; check its precision class. The current FAG execution is NN3021-D-K-TVP-SP-XL, with a polyamide cage.
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