33021 23007121E 33021R Chrome Steel 105*160*43mm Single Row Cone and Cup Tapered Roller Bearings

33021 23007121E 33021R Chrome Steel 105*160*43mm Single Row Cone and Cup Tapered Roller Bearings

Engineered to ISO 355/DIN 720 standards with P6-level precision (tolerance ±0.004mm), the dimensions are optimized for mid-size machinery where space is constrained but load demands remain high. Key dimensional details ensure seamless integration :
105mm Inner Diameter (ID): Fits large industrial shafts with a 0/-0.015mm tolerance, accommodating a minimum 2.5mm inner ring chamfer. This creates a secure interference fit with 35-45kW motor shafts, heavy CNC spindle shafts, or mining conveyor drive rollers—preventing slippage during torque surges (e.g., excavator arm operation) .
160mm Outer Diameter (OD): Integrates into mid-size machinery housings, compatible with a 2mm minimum outer ring chamfer. No oversized enclosures are needed, making it ideal for large lathes, industrial pumps, and medium mining equipment .
43mm Width: Balances load-bearing contact area (≈20% larger than narrow bearings of similar ID/OD) and space efficiency. The width ensures even load distribution without wasting space, perfect for industrial vibrating screens, 轧机 rollers, and small crusher drivetrains .
CNC grinding guarantees batch-to-batch consistency, eliminating fit gaps that cause 93-99% efficiency loss in misaligned bearings—a common issue in mid-size heavy-duty systems .

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