# TB Woods 8MPC25S21MPB QT Power Chain II Sprocket - 25 Tooth, 8M Pitch, 21 mm Wide, MPB Bushed - MROSupply.com

***TB Woods 8MPC25S21MPB QT Power Chain II synchronous sprocket with 25 teeth, 8M pitch, 21 mm belt width, and MPB bushing. Ductile iron construction with two flanges and a finished bore without keyway. Designed for use with QT Power Chain II belts in high-torque synchronous drive applications.***



## Product details:

- Catalog number: 8MPC25S21MPB
- SKU: 836718
- Price: ***$181.99*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [TB Woods](https://www.mrosupply.com/brands/tb-woods/)
- Category: 
    - [8MM Pitch](htts://www.mrosupply.com/timing-belt-pulleys/high-torque-pulleys/8mm-pitch/)
    - [High Torque Pulleys](htts://www.mrosupply.com/timing-belt-pulleys/high-torque-pulleys/)
    - [Timing Belt Pulleys](htts://www.mrosupply.com/timing-belt-pulleys/)
- Unit of measure: each
- Weight: 1.700 lb
- Technicall support: contact supplier for technical support on 888-829-6637


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


## Product attributes;

  
- Belt width: 21 mm
  

  
- Bore type: Finished with no keyway
  

  
- Bushing: MPB
  

  
- Dimension: 0
  

  
- Face width: 1.2
  

  
- Flanges: 2
  

  
- Groove profile: 8M
  

  
- Hub location: 2.08
  

  
- Inertia WR2 (lbs ft2): 0.008
  

  
- Inertia WR²: 2
  

  
- Inside hub projection: 0
  

  
- Material type: Ductile Iron
  

  
- Number of grooves: 25
  

  
- Number of hubs: 1
  

  
- Number of teeth: 25
  

  
- O.D.: 2.44
  

  
- O.D. (in): 2.443
  

  
- Outside hub projection: 0.63
  

  
- Pitch: 8
  

  
- Pitch diameter: 2.51
  

  
- Rim face: 1.2
  

  
- RPM upper limit: 15630
  

  
- Tooth pitch: 8
  

  
- Type: MPB1F
  
## Product documents / software:

- [Engineering Data](https://documents.mrosupply.com/product_documents/29/35/2935494/p-1954-tbw_engineering_data_hDDi3L6.pdf)
- [ISO Certificate](https://documents.mrosupply.com/product_documents/83/35/833534/tbw-chbg-iso-9001_2015-certification_KlGFe16.pdf)
- [Installation & Maintenance Manual](https://documents.mrosupply.com/product_documents/29/36/2936380/bw_qt_power_chain_ii_carbon_drive_installation_JYJkVuQ.pdf)
- [Line Drawings](https://documents.mrosupply.com/product_documents/35/17/351759/P-1686_C3-3_TypeMPB-MPBF_Timing-Sprocket_NO-ID_25lgEgz.jpg)
- [Product Line Drawing](https://documents.mrosupply.com/product_documents/83/41/834159/4_Type6-MPBF_QT-Power-Chain-II-Carbon-Sprocket_hsWhyXL.pdf)
- [Selection Guide](https://documents.mrosupply.com/product_documents/29/36/2936342/4-tbw_qt_power_chain_ii_carbon_drive_selection_D05qTDF.pdf)

## Product's reviews:
- Didn’t use yet - I really didn’t use them yet but the belts I received were actually Carlisle belts which are made by Timken. I had ordered a belt that I knew was Carlisle at the same time to try out the difference brands and it was the same belt. The only difference was the TB Woods belt was $10 more per belt so you might as well just buy the Carlisle/ Timken directly.
- Sleeve - Thanks for quick service and delivery was not long!
- Tb woods - Excelent recomiendo 100%
- Sales - I have all good experiences with your staff.
Thank you for the support.