SKF NK 45/20 TN 45 mm I.D Roller Bearing Needle, 55 mm O.D
- RS Stock No.:
- 233-7200
- Mfr. Part No.:
- NK 45/20 TN
- Brand:
- SKF
Image representative of range
Subtotal (1 unit)*
£34.61
(exc. VAT)
£41.53
(inc. VAT)
FREE delivery for orders over £50.00
Temporarily out of stock
- Shipping from 22 June 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | £34.61 |
*price indicative
- RS Stock No.:
- 233-7200
- Mfr. Part No.:
- NK 45/20 TN
- Brand:
- SKF
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | SKF | |
| Product Type | Roller Bearing | |
| Inside Diameter | 45 mm | |
| Race Width | 20mm | |
| Bore Type | Cylindrical | |
| Roller Material | Steel | |
| Cage Material | Non-Metallic | |
| Outside Diameter | 55 mm | |
| Dynamic Load Rating | 31.4kN | |
| Number of Rows | 1 | |
| Standards/Approvals | No | |
| Limiting Speed | 10000rpm | |
| Series | NK | |
| Bearing Material | Steel | |
| Static Load Rating | 65.5kN | |
| Race Type | Grooved | |
| Bearing Type | Needle | |
| Select all | ||
|---|---|---|
Brand SKF | ||
Product Type Roller Bearing | ||
Inside Diameter 45 mm | ||
Race Width 20mm | ||
Bore Type Cylindrical | ||
Roller Material Steel | ||
Cage Material Non-Metallic | ||
Outside Diameter 55 mm | ||
Dynamic Load Rating 31.4kN | ||
Number of Rows 1 | ||
Standards/Approvals No | ||
Limiting Speed 10000rpm | ||
Series NK | ||
Bearing Material Steel | ||
Static Load Rating 65.5kN | ||
Race Type Grooved | ||
Bearing Type Needle | ||
- COO (Country of Origin):
- SK
SKF Needle Roller Bearing, 45mm Inside Diameter, 55mm Outside Diameter - NK 45/20 TN
This needle roller bearing belongs to the high-performance category of bearings designed for applications requiring high load capacities in compact spaces. With an inside diameter of 45mm and a race width of 20mm, this model accommodates substantial loads while minimising radial space. The outer diameter measures 55mm, making it an ideal choice for a variety of mechanical uses, especially in the industrial sector.
Features & Benefits
• Fabricated from robust steel for enhanced durability
• Effective single-row design reduces friction and wear
• Capable of handling static loads up to 57 kN
• Supports dynamic loads of up to 32 kN efficiently
• Operates reliably at reference speeds of 9000 rev/min
• Limiting speed reaches up to 10,000 rev/min for flexibility
Applications
• Utilised in electric motors for improved performance
• Suitable for conveyor systems requiring high efficiency
• Effective in automotive for drive components
• Ideal for industrial machinery in manufacturing processes
• Used in assembly lines for precision engineering tasks
What are the benefits of the needle roller cage during operation?
The needle roller cage facilitates a higher load capacity while providing better lubrication and the ability to accommodate misalignment, ultimately enhancing service life and reliability without increasing size.
How does this bearing support reduced friction?
The design utilises small, elongated rollers that engage with the inner and outer races, distributing loads evenly and allowing for smooth rotational movement, which effectively decreases frictional forces.
What factors should be considered for temperature limits?
Consider ambient conditions and the specific heat resistance of surrounding components, as the bearing's material is crucial for maintaining performance under varying temperature scenarios to avoid premature wear.
What impact does the dynamic load rating have on application?
The dynamic load rating indicates the maximum load the bearing can sustain during continuous operation, ensuring that machinery can function without risk of failure under expected load conditions.
What design considerations are vital for housing and shaft tolerances?
Proper alignment and fit between the bearing and housing or shaft are critical to prevent misalignment, which can lead to increased wear or failure, emphasising the need for accurate tolerances during installation.
Related links
- SKF NK 45/30 TN 45 mm I.D Needle Roller Bearing Needle Roller, 55 mm O.D
- SKF NK 35/30 TN 35 mm I.D Needle Roller Bearing, 45 mm O.D
- SKF NK 35/20 TN 35 mm I.D Needle Roller Bearing, 45 mm O.D
- SKF NK 40/20 TN 40 mm I.D Roller Bearing Needle, 50 mm O.D
- INA NK45/30-TV-XL 45 mm I.D Roller Bearing Needle, 55 mm O.D
- INA NK45/20-TV-XL 45 mm I.D Roller Bearing Needle, 55 mm O.D
- NTN 1R45X55X40 45 mm I.D Needle Roller Bearing Needle Roller, 55 mm O.D
- NTN 1R45X55X20 45 mm I.D Needle Roller Bearing Needle Roller, 55 mm O.D
