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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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5 in stock
Machined needle roller bearing, 73 x 90 x 25 mm, ribbed outer ring, open. X-life execution, 60 kN dynamic and 100 kN static load rating. Unit Quantity: 1 Pc.
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| MFR / Brand | INA |
|---|---|
| MPN | NK73/25-XL |
| Model | NK7325XL |
| Bearing Type | Needle Roller Bearing, Open |
| ID | 73 mm |
| OD | 90 mm |
| Width | 25 mm |
| Material | Steel |
|---|---|
| Series | NK |
| Base Number | NK73/25 |
| Bore Shaft Size | 73 mm |
| Mpn Variants | NK73/25-XL; NK 73/25 XL; NK7325XL; NK-73/25-XL; NK 73/25 X-life |
| Additional Attributes | Fatigue limit load, radial: 17.5 kN; minimum chamfer radius 0.6 mm; X-life execution |
| Dynamic Load Rating | 60 kN |
| Static Load Rating | 100 kN |
| Rolling Elements | Needle rollers |
| Item Weight | 0.67 lb (302 g) |
| Limiting Speed | 6000 |
| Number Of Rows | 1 |
| Bore Type | Straight |
| Snap Ring Included | No |
| Harmonization Code | 8482.40.00 |
| Mounting Arrangement | Single |
| Design Units | Metric |
| Bearing Material | Bearing steel |
| Part Number | NK73/25-XL |
| Closure Type | Open |
| Industry Terms | needle roller bearing; machined needle roller bearing; ribbed outer ring needle bearing; X-life needle bearing; NK needle roller bearing 73x90x25 |
| Common Misspellings | INA NK 73/25 XL; INA NK73-25-XL; INA NK7325 XL; IMA NK73/25-XL; NK73/25XL |
| Application Types | needle roller bearing supports on shafts; machine and gearbox shaft supports |
INA NK73/25-XL single-row machined needle roller bearing with a ribbed outer ring, open on both faces. The needle rollers run directly on the shaft. Unit Quantity: 1 Pc.
NK — machined needle roller bearing with a ribbed outer ring, the needle rollers running directly on the shaft.
73 — 73 mm roller bore, the diameter of the shaft raceway the needles run on.
25 — 25 mm overall width.
XL — Schaeffler X-life, a reinforced execution with upgraded raceway quality and a higher load rating than the pre-XL part of the same size.
Roller Bore (Fw): 73 mm. Outside Diameter: 90 mm. Overall Width: 25 mm. Number Of Rows: 1. Rolling Elements: Needle rollers. Closure Type: Open. Bore Type: Straight. Bearing Material: Bearing steel. Dynamic Load Rating: 60 kN. Static Load Rating: 100 kN. Fatigue Limit Load, radial: 17.5 kN. Reference Speed: 3,900 r/min. Limiting Speed: 6,000 r/min. Item Weight: 302 g (0.67 lb).
Shaft raceway diameter: 73 mm. The shaft seat is the inner raceway, hardened and ground to bearing raceway quality. Minimum Chamfer Radius: 0.6 mm. The ribs on the outer ring guide the roller set axially and hold it together as a unit.
NK73/25 is the pre-X-life execution in the same 73 x 90 x 25 mm size and carries lower load ratings; the 60 kN and 100 kN figures above belong to the XL part. An IR inner ring can be paired with this bearing, which changes the bore to the inner ring bore. Designation forms: NK73/25-XL, NK 73/25 XL, NK7325XL, NK-73/25-XL.
Roller bore 73 mm, outside diameter 90 mm, overall width 25 mm.
Dynamic Load Rating 60 kN and Static Load Rating 100 kN. Fatigue Limit Load, radial: 17.5 kN.
XL is Schaeffler X-life, a reinforced execution with upgraded raceway quality and a higher load rating than the pre-XL NK73/25.
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