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Central Surplus Bearing Finder
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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1 in stock
Combined needle roller and angular contact ball bearing, 17 x 30 x 20 mm, with inner ring, radial and double-direction axial capacity in one unit.
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$25.04
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| MFR / Brand | INA |
|---|---|
| MPN | NKIB5903 |
| Model | NKIB-5903 |
| Bearing Type | Needle Roller Bearing, Open |
| ID | 17 mm |
| OD | 30 mm |
| Width | 26 mm |
| Series | NKIB |
|---|---|
| Lubricant | Oil or Grease |
| Material | Bearing Steel |
| Base Number | NKIB5903 |
| Mpn Variants | NKIB5903; NKIB-5903; NKIB 5903; NKIB5903-XL; NKIA5903 |
| Compatible With Replaces | Related execution, single-direction axial: INA NKIA5903 |
| Precision Class | RBEC 1 / P0 |
| Min Temp | -30 °C |
| Dynamic Load Rating | 12,400 N radial; 3,150 N axial |
| Static Load Rating | 14,600 N radial; 4,900 N axial |
| Rolling Elements | Needle Roller and Ball |
| Max Temp | 120 °C |
| Item Weight | 0.056 kg (0.12 lb) |
| Limiting Speed | 20,600 rpm |
| Number Of Rows | 2 |
| Bore Type | Straight |
| Duty Type | Standard |
| Harmonization Code | 8482.40.00 |
| Bearing Material | Chrome steel |
| Part Number | NKIB5903 |
| Cross Reference 1 | IKO NAXI1730 |
|---|
INA NKIB5903 is a combined needle roller and angular contact ball bearing with an inner ring. Bore Diameter: 17 mm. Outside Diameter: 30 mm. Overall Width: 20 mm. Rolling Elements: Needle Roller and Ball. Closure Type: Open. Bearing Material: Chrome steel. Item Weight: 0.056 kg (0.12 lb).
NKIB — A needle roller row and an angular contact ball row in one housing, with an inner ring. The needle row carries the radial load; the ball row carries axial load in both directions.
59 — Dimension series.
03 — Size code. Bore 17 mm.
Dynamic Load Rating: 12,400 N radial; 3,150 N axial. Static Load Rating: 14,600 N radial; 4,900 N axial. Limiting Speed: 20,600 rpm. Reference Speed: 15,000 rpm. Radial fatigue load limit 2,650 N; axial fatigue load limit 222 N. Lubricant: grease or oil. Operating temperature range: -30 °C to +120 °C.
One NKIB does the work of a needle roller bearing and a thrust bearing side by side, in a shorter axial space than the two fitted separately. That is the reason to specify it. Series: NKIB59. Base Number: NKIB5903.
Shaft seat 17 mm. Housing bore 30 mm. Outer ring width 18 mm against an overall width of 20 mm, the difference being the inner ring shoulder. Inner ring raceway diameter 22 mm. Minimum chamfer dimension 0.3 mm.
The inner ring is part of this bearing, so the shaft seat needs no hardened raceway.
Unit Quantity: 1 Pc. Complete bearing: outer ring, needle roller row, angular contact ball row and inner ring.
Same-envelope equivalent: IKO NAXI1730. Cross-references on combined needle roller and angular contact ball bearings are deliberately few, because only a short list of makers builds the type. The INA NKIA5903 shares the envelope but takes axial load in one direction only, so it is a related execution rather than a substitute.
Searchable forms of the number: NKIB5903, NKIB-5903, NKIB 5903, NKIB5903-XL, NKIA5903.
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Rockwell’s own product page for the Kinetix 6000 is down
A faster way to search our bearing inventory Today we’re launching the Central Surplus Bearing
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