# NTN 7E-HMK4025 Drawn Cup Needle Roller Bearing - 40x52x25 mm Open End, Steel Cage - MROSupply.com

***NTN 7E-HMK4025 is a drawn cup needle roller bearing with a 40 mm bore, 52 mm outside diameter, and 25 mm width. This open-end design features a steel cage and is unsealed. The heavy-walled HMK series provides increased load capacity for applications requiring compact radial support.***



## Product details:

- Catalog number: 7E-HMK4025
- SKU: 277394
- Price: ***$18.33*** Each
- Quantity: This vendor has a minimum order quantity of
4.Order minimum ($) may be applied.
Add desired QTY to cart and proceed to checkout to view minimum'

- Brand Minimum Order Quantity - 4
(This is the minimum order quantity if ordering this unit alone
from the vendor. Adding other products from the same vendor will reduce
the overall requirement. If adding multiple products from same vendor,
please add all products to cart to see total minimum.)
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [NTN Bearing](https://www.mrosupply.com/brands/ntn-bearing/)
- Category: 
    - [Full Complement Needle Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/needle-roller-bearings/full-complement-needle-roller-bearings/)
    - [Needle Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/needle-roller-bearings/)
    - [Roller Bearings](htts://www.mrosupply.com/bearings/roller-bearings/)
    - [Bearings](htts://www.mrosupply.com/bearings/)
- Unit of measure: each
- Weight: 0.207 lb


## Product images:
- https://static.mrosupply.com/images/noimage.webp


## Product attributes;

  
- Bearing Type: Needle Roller Bearing
  

  
- Bore Type: Round
  

  
- Bore type: Round
  

  
- C (in): 0.9843
  

  
- Cage Material: Steel
  

  
- Cage material: Steel
  

  
- Configuration: One
  

  
- D (in): 1.9685
  

  
- Dynamic Load Rating: 9200 lbf
  

  
- Dynamic load rating: 9200 lbf
  

  
- Enclosure: Open
  

  
- Fw: 1.5748 in
  

  
- I.D.: 40 mm
  

  
- Limiting Speed - Grease: 4000 RPM
  

  
- Limiting speed - grease: 4000 RPM
  

  
- Limiting Speed - Oil: 6000 RPM
  

  
- Limiting speed - oil: 6000 RPM
  

  
- Material: Steel
  

  
- O.D.: 50 mm
  

  
- Oil Hole: w/o Oil Hole
  

  
- Oil hole: w/o Oil Hole
  

  
- Operating Temperature Range: -40 to 250 °F
  

  
- Operating temperature range: -40 to 250 ºF
  

  
- Precision: ISO class 0
  

  
- Radial Internal Clearance: CN
  

  
- Radial internal clearance: CN
  

  
- Static Load Rating: 15200 lbf
  

  
- Static load rating: 15200 lbf
  

  
- Type: Drawn Cup Needle Roller Bearing
  
## Product documents / software:

- [Drawing](https://documents.mrosupply.com/product_documents/50/44/5044706/1238_S_OLLt6lh.png)
- [Drawing](https://documents.mrosupply.com/product_documents/HM/HMK2525/1238_S_eX7BklM.png)






## FAQ:

- How do I choose the right type of bearing for my application?: Start with the load and how it’s applied. You need to know if you’re dealing with radial loads, axial loads, or a mix of both. Then look at speed, operating environment, and space constraints.
For example, ball bearings are great for high speed and lighter loads, while roller bearings handle heavier loads but usually at lower speeds. If there’s contamination, moisture, or heat involved, you may need sealed bearings or specific materials.
In most cases, the right choice comes down to matching load type, speed, and environment to the bearing design.