33116 3007716E 33116R Chrome Steel 80*130*37mm Single Row Cone and Cup Tapered Roller Bearings

33116 3007716E 33116R Chrome Steel 80*130*37mm Single Row Cone and Cup Tapered Roller Bearings

To handle mid-scale heavy loads uniformly (critical for preventing premature wear, uneven stress, and bearing failure), the 33116 series features brand-specific reinforced components:
33116/3007716E: Equipped with a stamped steel cage (2.6mm thickness, 215% thicker than standard mid-size bearings) with rounded roller pockets. The thickened steel resists deformation under high-speed vibrations (up to 8.5g) or sudden load spikes (e.g., torque surges in 55-65kW motor drivetrains). Rounded pockets reduce stress concentration on rollers by 34-39%, extending roller life by 42-47% and preventing premature fatigue.
33116R (KOYO-Specific): Uses a high-strength alloy steel cage (e.g., chrome-molybdenum steel) with an anti-wear molybdenum disulfide coating. The alloy steel offers 28% higher tensile strength than standard stamped steel while keeping weight manageable, and the coating minimizes friction between rollers and cage—reducing centrifugal drag by 19% at maximum speed. This design is ideal for weight-sensitive mid-size machinery (e.g., portable industrial tools, agricultural harvesters) where performance and weight balance are critical.
Both designs distribute loads evenly across raceways, preventing localized stress on thin-walled mid-size components (e.g., gearbox housings, pump casings, or conveyor roller shafts) and extending overall equipment lifespan by 44-49%.

The Shipping Way We Use

We use the main delivery companies are as below

We normally will dispatch your order within 2-7 working days depends on stock level, as soon as the order is shipped, we will list the tracking number on your order detail page, if there is any problem regarding to the shipping, please feel free to contact us. 

Below shows the estimate delivery time for different courier:

- DHL: 10-14 working days 
- FedEx: 7 to 10 working days 
- UPS: 7 to 10 working days 
- EMS: 10-14 working days