# TB Woods 1243B V-Belt Sheave - 3-Groove, 12.4" OD, A-B Section, SK Bushed - MROSupply.com

***TB Woods 1243B conventional V-belt sheave with 3 grooves, 12.4" datum diameter, and SK bushing. Cast-iron construction with standard single-plane balance. Compatible with A and B cross-section belts. Rated for speeds up to 1970 RPM.***



## Product details:

- Catalog number: 1243B
- SKU: 346350
- Price: ***$290.61*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [TB Woods](https://www.mrosupply.com/brands/tb-woods/)
- Category: 
    - [B/5L Section](htts://www.mrosupply.com/sheaves/quick-detachable-bushed-bore-sheaves/b5l-section/)
    - [Quick Detachable Bushed Bore Sheaves](htts://www.mrosupply.com/sheaves/quick-detachable-bushed-bore-sheaves/)
    - [Sheaves](htts://www.mrosupply.com/sheaves/)
- Unit of measure: each
- Weight: 20.000 lb
- Technicall support: contact supplier for technical support on 888-829-6637


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


## Product attributes;

  
- Balance: Standard, 1 plane
  

  
- Belt section: A-B
  

  
- Bore type: Quick disconnect bushing
  

  
- Bushing: SK
  

  
- Component WR2 (lbs ft2): 3.71
  

  
- Datum diameter: 12.4
  

  
- Dimension: 1.88
  

  
- Dimension (E): 0.03
  

  
- Dimension (L): 1.88
  

  
- Dimension (M): 0.66
  

  
- Face width: 2.5
  

  
- Face width (in): 2.50
  

  
- Groove cross section section: A-B
  

  
- Hub location: 0.69
  

  
- Hub location (in): 0.69
  

  
- I.D.: 11.06
  

  
- Inertia WR²: 3.71
  

  
- Inside diameter (in): 11.06
  

  
- Material type: CI
  

  
- Max RPM: 1970
  

  
- Number of grooves: 3
  

  
- O.D.: 12.75
  

  
- Outside diameter (in): 12.75
  

  
- Pitch diameter: 12.81
  

  
- RPM upper limit: 1970
  
## Product documents / software:

- [Catalog Product Section](https://documents.mrosupply.com/product_documents/AP/AP110/sec-b2_0VH8bo9.pdf)
- [Full Catalog](https://documents.mrosupply.com/product_documents/N4/N412/p-1687-tbw_ORsxZDt.pdf)
- [Service Manual](https://documents.mrosupply.com/product_documents/2B/2BK57118/p-1688-tbw_0MqPcK4.pdf)
## Alternate products to `TB Woods 1243B V-Belt Sheave - 3-Groove, 12.4" OD, A-B Section, SK Bushed - MROSupply.com`:
- [Browning 3B124SK (1004704) 3-groove cast iron B-section multiple sheave with a 12.4-inch pitch diameter and SK Q-D bushed bore. Precision-machined grooves and static balancing ensure low-vibration operation. Used in fan drives, blower drives, pump drives, and general HVAC and industrial belt drives.](https://www.mrosupply.com/products/2286969/as-markdown/)
- [Dodge 455633 SK QD bushing with 7/16 to 2-5/8" bore range, cast iron construction, and gray finish. Quick Disconnect design for easy installation and removal on shafts up to 2-5/8" diameter. Suitable for mounting sheaves, sprockets, and pulleys in industrial power transmission applications.](https://www.mrosupply.com/products/135840/as-markdown/)
- [Martin 3 B 124 SK conventional QD sheave. 3-groove B-section (5L) V-belt sheave with 12.4" pitch diameter, cast iron construction. Uses industry-interchangeable SK Quick Disconnect bushing (sold separately) for easy mounting. Outside diameter: 12.750".](https://www.mrosupply.com/products/254684/as-markdown/)

## Product's reviews:
- Muy buen servicio y rapidez en la entrega - Primera vez q compro con esta compañía, recomiendo ampliamente comprar con ellos y claro q volveria a comprar otra vez muy buen servicio y entrega rapida
- 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!
- Great service! - It was all sent perfectly and on time