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Gearmotors: What They Are and How to Size a Replacement
Many industrial loads need torque an electric motor can’t deliver on its own, at a
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Double-row spherical roller bearing, 140 x 210 x 53 mm, 1:12 tapered bore, W33 lubrication groove and three holes, pressed steel cage. NSK 23028CDKE4.
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| MFR / Brand | NSK |
|---|---|
| MPN | 23028CDKE4 |
| Model | 23028-C-D-K-E4 |
| Bearing Type | Spherical Roller Bearing |
| ID | 140 mm (5.5118 in) |
| OD | 210 mm |
| Base Number | 23028K |
|---|---|
| Industry Terms | spherical roller bearing, self-aligning roller bearing, taper bore bearing, W33 bearing, adapter sleeve bearing, double row roller bearing |
| Common Misspellings | 23028 CDKE4, 23028CDK E4, NSK 23028 CD K E4, sperical roller bearing, spherical roler bearing, bearring |
| Application Types | Heavy industrial shafts, conveyors, fans and blowers, crushers, mixers, pumps, gearboxes, paper and steel mill plant |
| Bore Shaft Size | 140 mm (5.5118 in) tapered bore |
| Locking Method | H3128 adapter sleeve, KM locknut, MB lockwasher |
| Mpn Variants | 23028CDKE4, 23028 CDK E4, 23028-C-D-K-E4, 23028CDK, 23028K, 23028 K, 23028 |
| Compatible With Replaces | H3128 adapter sleeve, KM28 locknut, MB28 lockwasher |
| Cage Material | Pressed steel |
| Number Of Rows | 2 |
| Bore Type | Tapered 1:12 (K) |
| Harmonization Code | 8482.30.00 |
| Part Number | 23028CDKE4 |
| Cage Type | Pressed steel with floating guide ring |
| Overall Width | 53 mm |
| Rolling Elements | Spherical Roller |
| Lubricant | grease or oil |
| Closure Type | Open |
| Cross Reference 1 | SKF 23028 CCK/W33 |
|---|---|
| Cross Reference 2 | FAG 23028-E1A-K-M - brass cage, not pressed steel |
NSK 23028CDKE4 double-row spherical roller bearing, 140 mm bore, 210 mm outside diameter, 53 mm width. Two rows of spherical rollers on a common spherical outer raceway, pressed steel cages with a floating guide ring between the rows, 1:12 tapered bore, lubrication groove and three feed holes in the outer ring. Bearing only, open. Unit Quantity: 1 Pc.
230 — ISO dimension series.
28 — bore code, 28 × 5 = 140 mm.
CD — pressed steel cages with a floating guide ring.
K — 1:12 tapered bore.
E4 — NSK code for the W33 feature, a circumferential groove in the outer ring with three radial lubrication holes.
Bore Diameter: 140 mm (5.5118 in), tapered 1:12. Outside Diameter: 210 mm. Overall Width: 53 mm. Number Of Rows: 2. Rolling Elements: Spherical roller. Bore Type: Tapered 1:12 (K). Cage Material: Pressed steel. Cage Type: Pressed steel with floating guide ring. Closure Type: Open. Lubricant: grease or oil. Series: 23000 (ISO 230). Base Number: 23028K. Unit Quantity: 1 Pc.
The bore is tapered 1:12 and mounts on a matching tapered seat or on an H3128 adapter sleeve with KM locknut and MB lockwasher. Shaft seat on the adapter sleeve: 125 mm. The spherical outer raceway accommodates shaft misalignment and housing deflection, and thrust is taken in both directions.
SKF 23028 CCK/W33. FAG 23028-E1A-K-M — machined brass cage in place of pressed steel. A 23028 without the K has a straight cylindrical bore. Part number variants: 23028CDKE4, 23028 CDK E4, 23028-C-D-K-E4, 23028CDK, 23028K, 23028 K, 23028.
Bore Type: tapered 1:12 (K), 140 mm bore.
E4 is NSK’s code for the W33 feature: a circumferential groove in the outer ring with three radial lubrication holes.
H3128, with KM locknut and MB lockwasher. Shaft seat on the sleeve: 125 mm.
$44.26
14 in stock
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Our team can locate, cross-reference, and source all parts.
Our team can locate, cross-reference, and source all parts.
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