33206 3007206E 33206R Chrome Steel 30*62*25mm Single Row Cone and Cup Tapered Roller Bearings

33206 3007206E 33206R Chrome Steel 30*62*25mm Single Row Cone and Cup Tapered Roller Bearings

The 33206 (standard), 3007206E (legacy), and 33206R (KOYO-specific) single row cone-and-cup tapered roller bearings are forged from high-grade 52100 chrome steel (GCr15 equivalent), tailored for 306225mm (IDODwidth) small-to-medium heavy-duty scenarios. Precision quenching and tempering achieve HRC 58-62 hardness, delivering three core advantages:
Wear Resistance: Outperforms low-carbon steel bearings by 360-370% in dusty/abrasive environments (medium grain conveyors, 8-12kW motor gearboxes), resisting erosion from metal shavings, crop residues, or construction sand that shortens standard bearing life by 48-58%.
Impact Toughness: Absorbs sudden load spikes—such as start-stop cycles of medium tractors, vibration from small industrial pumps, or torque surges in 8-12kW motor drivetrains—without micro-cracking or deformation, stable for 2,800+ cycles/day in light manufacturing and medium-scale agriculture.
Corrosion Protection: Anti-rust treatments (anti-corrosion oil coating, passivation) form a protective layer, extending maintenance intervals by 38-48% in humid or semi-outdoor settings (workshop compressors, medium irrigation pumps) and reducing replacement costs for frequent part swaps.

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