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Deep Groove Ball Bearing – 6311LLU/2AS
NTN 6311LLU/2AS Deep Groove Ball Bearing – Heavy-duty, double-sealed bearing with 55mm bore and nitrile rubber contact seals for high-speed, low-friction performance in motors, gearboxes, and industrial machinery.
Original price was: $30.60.$29.00Current price is: $29.00.
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Description
The NTN 6311LLU/2AS is a premium-grade single-row deep groove ball bearing built for durability, precision, and smooth operation under demanding conditions. With a 55mm inner diameter, 120mm outer diameter, and 29mm width, it’s ideal for electric motors, pumps, conveyors, and gearboxes in industrial environments.
This bearing features LLU double-sided contact seals made from nitrile rubber, offering excellent protection against dust, moisture, and contaminants. The 2AS suffix indicates enhanced sealing performance and long-lasting lubrication retention. Its CN radial clearance provides a balanced fit for smooth rotation and minimal vibration.
Constructed from high-carbon chrome steel and fitted with a pressed steel cage, the NTN 6311LLU/2AS meets ISO Class 0 / ABEC 1 precision standards and operates reliably at speeds up to 3900 RPM. With a dynamic load rating of 79.5 kN, it delivers consistent performance across a temperature range of -40°C to +120°C.
Specifications
| Category | Details |
|---|---|
| Brand | NTN |
| Model | 6311LLU/2AS |
| Bearing Type | Deep groove ball bearing |
| Configuration | Single row |
| Inner Diameter | 55 mm |
| Outer Diameter | 120 mm |
| Width | 29 mm |
| Weight | 1.346 kg |
| Material | High carbon chrome steel |
| Ball Material | Steel |
| Cage Type | Pressed |
| Cage Material | Steel |
| Seal Type | LLU (double-sided contact) |
| Seal Material | Nitrile rubber |
| Radial Clearance | CN (normal) |
| Precision Class | ISO Class 0 / ABEC 1 |
| Limiting Speed (Grease) | 3900 RPM |
| Static Load Rating | 45.00 kN / 10,100 lbf |
| Dynamic Load Rating | 79.50 kN / 17,870 lbf |
| Operating Temperature Range | -40°C to +120°C / -40°F to +250°F |
Additional information
| Weight | 1.346 kg |
|---|---|
| Dimensions | 120 × 29 mm |
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