# Dodge MB78X1 B/5L Section Finished Bore V-Belt Sheave - MROSupply.com

***Dodge MB78X1 B/5L section finished bore V-belt sheave for industrial belt drive applications. Precision-machined gray cast iron construction with fixed bore for direct shaft mounting. Designed for use with B-section classical and 5L-section light-duty V-belts, providing reliable power transmission in HVAC, material handling, and general industrial equipment.***



## Product details:

- Catalog number: MB78X1
- SKU: 706996
- Price: ***$72.62*** Each
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Dodge](https://www.mrosupply.com/brands/dodge/)
- Category: 
    - [B/5L Section](htts://www.mrosupply.com/sheaves/finished-bore-sheaves/b5l-section/)
    - [Finished Bore Sheaves](htts://www.mrosupply.com/sheaves/finished-bore-sheaves/)
    - [Sheaves](htts://www.mrosupply.com/sheaves/)
- Unit of measure: each
- Weight: 4.350 lb
- Technicall support: contact supplier for technical support on +1-864-284-5700


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


## Product attributes;

  
- Bore Diameter: 1 inch finished bore
  

  
- Groove Configuration: 1-groove B/5L section profile
  

  
- Mount Type: Fixed bore (no bushing
  

  
- Pitch Diameter: 7.4 inches
  

  
- Weight: 4.35 pounds
  
## Product documents / software:

- [Dodge belted drives and couplings: HVAC Catalog](https://documents.mrosupply.com/product_documents/70/59/705975/fd25d627-9d1b-4820-92d2-af2d00439ac1_jv1mmwO.pdf)
## Suggested products:
- [Dodge MBL117 B/5L section quick detachable bushed bore sheave for V-belt drive applications. Designed for use with QD bushings, this sheave provides reliable power transmission in industrial belt drive systems. Gray cast iron construction ensures durability and consistent performance under load.](https://www.mrosupply.com/products/707132/as-markdown/)
- [Dodge MB78X1-3/8 finished bore sheave for B and 5L section V-belts, 7.8" outside diameter, 1-3/8" bore. Cast iron construction for industrial power transmission applications requiring precise belt alignment and reliable performance.](https://www.mrosupply.com/products/2249186/as-markdown/)
- [Dodge MB78X1-7/16 finished bore V-belt sheave for B/5L section belts, 1-7/16" bore diameter, single groove configuration. Cast iron construction for industrial power transmission applications.](https://www.mrosupply.com/products/2249187/as-markdown/)
- [Dodge 2MB78X1-3/8 finished bore sheave with 2 grooves and 7.4" pitch diameter. Designed for standard V-belt drives, this light-duty sheave mounts directly to a 3/8" shaft. Fixed bore construction provides a simple, secure fit for power transmission applications.](https://www.mrosupply.com/products/706415/as-markdown/)
- [Dodge MB78X1-1/4 finished bore V-belt sheave, B/5L belt section, 7.8" outside diameter, 1-1/4" bore, single groove. Cast iron construction for industrial V-belt drives. Compatible with B-section classical and 5L-section light-duty belts.](https://www.mrosupply.com/products/2920298/as-markdown/)

## Product's reviews:
- Purchase review - I received quick replies to any questions; delivery was on time and immediate.
I am very satisfied with my experience with MRO Supply.
- Txt4 parts order - The staff was very helpful identifying the part I needed.
- Excellent - We recently purchased a 30-year old hydroseeder and have no manuals or parts diagrams for it. The manufacturer is since out of business and there is very limited information on line. The most critical part we needed was a Dodge part. The original part was clearly marked with the Dodge name and part number. MRO was quickly able to identify the replacement part and we had in hand in two days. Perfect fit. Thank you MRO Supply for helping make our machine functional.
- Friction discs - shipped quickly worked as expected




## FAQ:

- How does Dodge warranty evaluation work if a product fails?: Failed units go to Dodge's US plants for evaluation — about a week in transit plus one to two weeks of analysis, and you get the findings either way. Warranty covers workmanship and material defects; failures caused by the application (lubrication, installation) fall to the customer, but the failure analysis tells you the root cause so it doesn't repeat.