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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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2 in stock
Machined needle roller bearing, 22 mm roller bore x 30 mm outside diameter x 23 mm width, heavy section outer ring, 21.1 kN dynamic, 29 kN static.
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| MFR / Brand | INA |
|---|---|
| MPN | RNA6903-XL |
| GTIN | 035373110629 |
| Model | RNA6903XL |
| Bearing Type | Needle Roller Bearing, Open |
| ID | 22 mm |
| OD | 30 mm |
| Width | 23 mm |
| Material | Chrome steel |
|---|---|
| Series | RNA69 |
| Base Number | RNA6903 |
| Mpn Variants | RNA6903-XL; RNA6903XL; RNA 6903 XL; RNA6903; NA6903; RNA-6903 |
| Compatible With Replaces | Inner ring for a soft shaft: INA IR22x30x23 |
| Precision Class | RBEC 1 / P0 |
| Min Temp | -30 °C |
| Dynamic Load Rating | 21,100 N |
| Static Load Rating | 29,000 N |
| Rolling Elements | Needle Roller |
| Max Temp | 120 °C |
| Item Weight | 0.043 kg (0.09 lb) |
| Limiting Speed | 20,000 rpm |
| Number Of Rows | 2 |
| Bore Type | Straight |
| Lubricant | Grease or oil |
| Harmonization Code | 8482.40.00.00 |
| Bearing Material | Chrome steel |
| Part Number | RNA6903-XL |
| Closure Type | Open |
| Cross Reference 1 | Koyo RNA6903 |
|---|
INA RNA6903-XL machined needle roller bearing with a heavy-section outer ring, 1 Pc. Outer ring with needle roller and cage assembly, no inner ring. 22 mm roller bore, 30 mm outside diameter, 23 mm width.
RNA — needle roller bearing supplied as an outer ring with the needle roller and cage assembly. The rollers run directly on the shaft, so the shaft seat is the raceway and is hardened and ground.
69 — the 69 dimension series: a heavy-section outer ring in a compact outside diameter.
03 — size code within the series.
XL — Schaeffler’s current generation of the design.
Bore Diameter: 22 mm, measured over the needle roller complement. Outside Diameter: 30 mm. Overall Width: 23 mm. Rolling Elements: Needle Roller. Number Of Rows: 2. Closure Type: Open. Bearing Material: Chrome steel. Item Weight: 0.043 kg (0.09 lb). Dynamic Load Rating: 21,100 N. Static Load Rating: 29,000 N. Limiting Speed: 20,000 rpm. Reference Speed: 10,500 rpm. Fatigue Load Limit, radial: 5,200 N. Lubricant: grease or oil. Operating Temperature Range: -30 °C to +120 °C. Series: RNA69. Base Number: RNA6903. GTIN: 035373110629. Unit Quantity: 1 Pc.
Shaft seat diameter: 22 mm, hardened and ground, serving as the roller raceway. Outer ring width: 23 mm. Minimum chamfer dimension: 0.3 mm. Matching inner ring for this size: INA IR22x30x23.
Cross-Reference 1: Koyo RNA6903. MPN Variants: RNA6903-XL, RNA6903XL, RNA 6903 XL, RNA6903, NA6903, RNA-6903.
Bore Diameter: 22 mm over the rollers. Outside Diameter: 30 mm. Overall Width: 23 mm.
Dynamic Load Rating: 21,100 N. Static Load Rating: 29,000 N.
Outer ring with needle roller and cage assembly only. The matching inner ring is the INA IR22x30x23.
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