The Bomag 740052751 Key Block is a genuine OEM component designed for BM 1300/30 and BM 1200/30 cold milling machines. Sourced directly from Bomag, this part meets the same specifications as the original installed at the factory, making it a straight swap for worn or damaged units. This key block is purpose-built for the demands of heavy-duty milling operations, ensuring the mechanical connection it secures stays locked and stable under load.
Key Features
- Genuine OEM Construction — manufactured by Bomag to the exact material and dimensional tolerances of the original key block, maintaining the mechanical integrity of the connection it anchors
- Direct Replacement Fit — drops into the same position as the factory-installed component on BM 1300/30 and BM 1200/30 cold milling machines with no rework required
- Verified Cold Milling Fitment — confirmed compatibility with the Bomag BM 1300/30 and BM 1200/30, two of Bomag's mid-size cold milling machines used in asphalt and surface removal applications
- Locks Drive Components Against Slippage — a correctly seated key block keeps rotating assemblies properly indexed; a worn or missing block allows shift and play that accelerates wear on surrounding components
- Exact Part Number Match — ordering by Bomag part number 740052751 ensures you receive the correct block geometry and fit for your specific machine configuration
A key block is a precision-machined locking component used to secure a shaft, gear, pulley, or similar rotating part within its bore, preventing relative rotation or axial movement between mating components. It works in conjunction with a keyway machined into both the shaft and the hub, forming a positive mechanical lock that transfers torque reliably. When a key block wears, cracks, or goes missing, the connected assembly can slip or shift under load — leading to accelerated wear on the shaft and bore, vibration, and potential loss of drive function in the milling system.
Part Details
| Part Number | 740052751 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Key Block |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Cold Milling Machine | BM1300/30 | 00800607 |
| Cold Milling Machine | BM1200/30 | 00800617 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
