# TPU 645S (TPUN 330620) Turning Insert, 6640 Grade | Pramet 6751574 - MROSupply.com

***Pramet TPU 645S:6640 positive turning insert — TPU 645S (ISO TPUN 330620S), 6640 grade, 3/4 in (19.05 mm) IC, 1/4 in (6.35 mm) thick, 2.0 mm corner radius. Triangular 60° shape with 11° clearance, utility tolerance class, no chipbreaker. MT-CVD coated carbide for medium to heavy machining of cast iron and steel. Article 6751574.***



## Product details:

- Catalog number: 6751574
- SKU: 6059107
- Price: ***$38.38*** Each
- Quantity: This product has a minimum order quantity of 5.
This is the minimum order quantity available when purchasing this product.
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Pramet](https://www.mrosupply.com/brands/pramet/)
- Category: 
    - [OD Turning](htts://www.mrosupply.com/cutting-tools/inserts/turning-inserts/od-turning/)
    - [Turning Inserts](htts://www.mrosupply.com/cutting-tools/inserts/turning-inserts/)
    - [Inserts](htts://www.mrosupply.com/cutting-tools/inserts/)
    - [Cutting Tools](htts://www.mrosupply.com/cutting-tools/)
- Unit of measure: each
- Returns: Yes


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


## Product attributes;

  
- Chipbreaker: No chipbreaker
  

  
- Coating: 6640
  

  
- Coating process: MT-CVD
  

  
- Coating property (CTP): 1
  

  
- Cooling effect: Positive effect on tool life - cooling is recommended
  

  
- Corner radius - inch (RE): 0.079
  

  
- Corner radius - millimeter (RE): 2
  

  
- Cutting edge length - inch (L): 1.299
  

  
- Cutting edge length - millimeter (L): 33
  

  
- Depth of cut maximum - inch (APMX): 0.374
  

  
- Depth of cut maximum - millimeter (APMX): 9.5
  

  
- Depth of cut minimum - inch (APMN): 0.079
  

  
- Depth of cut minimum - millimeter (APMN): 2
  

  
- Feed maximal - millimeter: 0.45
  

  
- Feed minimal - millimeter: 0.2
  

  
- Feed_MAX_IMP_NUM: 0.018
  

  
- Feed_MIN_IMP_NUM: 0.008
  

  
- Inscribed circle diameter - inch (IC): 0.75
  

  
- Inscribed circle diameter - millimeter (IC): 19.05
  

  
- Insert thickness - millimeter (S): 6.35