SKU: 7904UCG/GNP42-NTN
NTN 7904UCG/GNP42 Super Pricision Single Row Angular Contact Ball Bearing 20x37x9mm
Equivalent to: 7904UCG/GNP42U3G
Out of stock
Description
Super Precision Angular Contact Bearings: These bearings are engineered to deliver exceptional accuracy, rigidity, and performance in applications where precision matters most. Designed to support combined radial and axial loads, these bearings excel in high-speed environments that demand smooth operation and precise rotational control.
Manufactured with ultra-tight tolerances and premium-grade materials, NTN angular contact bearings provide superior stiffness, reduced vibration, and excellent thermal stability. Their optimized contact angle allows for efficient load distribution, making them ideal for applications requiring high positional accuracy and consistent performance under stress.
Commonly used in machine tools, robotics, aerospace components, and precision manufacturing equipment, NTN High-Precision Angular Contact Bearings are trusted by engineers and OEMs worldwide.
Benefits: Premium materials & finishing, low noise & vibration, superior rigidity & stability.
- Brand / Quality:
- NTN - High Quality
- Inside Diameter:
- 20mm
- Outside Diameter:
- 37mm
- Width:
- 9mm
- Seals / Shields:
- None
- Clearance:
- * Standard
Technical
| d - Inside diameter | 20mm |
|---|---|
| D - Outside diameter | 37mm |
| B - Width | 9mm |
| d1 - Inner ring outside diameter | 25.9mm |
| d2 - Inner ring outside diameter | 24.7mm |
| D1 - Inner ring inside diameter | 31.1mm |
| D2 - Inner ring inside diameter | 33.6mm |
| a - Charge load application point | 8.3mm |
| Contact angle | 15 degrees |
| rs min - Minimum fillet radius | 0.3mm |
| r1s min - Minimum fillet radius | 0.15mm |
| Precision class | P42 |
| C - Dynamic load rating | 8.45 kN |
| C0 - Static load rating | 4.9 kN |
| f0 - Coefficient | 14.9 |
| Preload level | GN |
| Preload value | 49 N |
| Axial rigidity | 33.9 N/ym |
| Radial rigidity | 181.3 N/ym |
| N Lim - Oil limiting speed | 65800 tr/min |
| N Lim - Grease limiting speed | 41100 tr/min |
| da min - Inner ring minimum shoulder diameter | 22.5mm |
| Da max - Outer ring maximum shoulder diameter | 34.5mm |
| Db max - Outer ring maximum shoulder diameter | 35.8mm |
| r1a max - Maximum fillet radius | 0.15mm |
| ra max - Maximum shaft & housing fillet radius | 0.3mm |
| Tmin - Minimum operating temperature | -20 Deg C |
| Tmax - Maximum operating temperature | +120 Deg C |
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