Bearings
Needle Roller Bearings
Drawn Cup
TLAM & BK Series Drawn Cup Needle Bearings
Quick Code: BB-525790
BK4020 NTN Drawn Cup Roller Bearing with Closed End
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Product Specification
Brand
NTN
Cage
Sheet steel cage
Inside Dia (Fw)
40mm
Lubrication hole
Without lubrication groove
Needle rows
Single-row bearing
Outside Dia (D)
47mm
Seal
None, open bearing
Temperature range
-30 to +140 °C
Width (C)
20mm
Reference
BK4020
Additional Reference:
10156583
Quick Order Code
BB-525790
Product Description
The BK4020 NTN Drawn Cup Roller Bearing is a precision-engineered single-row needle roller bearing designed for demanding industrial applications requiring compact, high-performance support solutions. This bearing features a unique closed-end design on one side of the outer ring, providing superior protection against grease leakage and contamination.
Key Features:
- Completely closed on one side of the outer ring
- Prevents grease leaks and entry of foreign particles
- Lightweight construction with high load-carrying capacity
- Low section height for space-efficient design
- Shell-type outer ring accurately drawn, carburized, and quenched
- Sheet steel cage for durability
- Operating temperature range from -30°C to +140°C
Technical Specifications:
| Brand: | NTN |
| Inside Diameter (Fw): | 40mm |
| Outside Diameter (D): | 47mm |
| Width (C): | 20mm |
| Needle Rows: | Single-row |
| Lubrication: | Without lubrication groove |
| Seal: | Open bearing |
Benefits:
- Ideal for applications requiring perfect shaft end closure
- No axial positioning fixtures required
- Compact and space-saving design
- Economical solution for mass-produced components
Typical Applications:
- Automotive components
- Small electric motors
- Precision machinery
- Robotics and automation equipment
- Industrial machinery with space constraints
- Precision positioning systems
- Small appliance manufacturing
The BK4020 is an excellent choice for engineers and designers seeking a reliable, high-performance needle roller bearing that provides robust protection and efficient load transmission in compact environments.
