The Bomag 83670057 Key Block is a genuine OEM component designed for Bomag BM-series cold milling machines, including the BM 1200/30, BM 1300/30, BM 2000/60-2, and related BM 1000 and BM 1300 variants. As a direct OEM replacement, this key block is produced to Bomag's exact specifications, ensuring a correct, secure fit within the milling machine's drive or mounting assembly. This part is confirmed to fit the BM 1000/30-2, BM 1200/30-2, BM 1300/30-2, and BM 2000/60-2 cold milling machines, giving operators and fleet managers confidence that part number 83670057 is the right choice for their machine.
Key Features
- OEM-Grade Material Integrity — Manufactured to Bomag's original specifications, ensuring the hardness and dimensional tolerances required to maintain a secure keyed connection under the heavy rotational loads found in cold milling applications.
- Direct Replacement Fit — Engineered to seat directly into the existing keyway without reworking the shaft or housing, maintaining the original alignment and torque transfer path.
- Broad BM-Series Coverage — Compatible with BM-series cold milling machines including the BM 1000/30-2, BM 1200/30, BM 1200/30-2, BM 1300/30, BM 1300/30-2, and BM 2000/60-2.
- Protects Shaft and Housing — A correctly fitted key block prevents the relative rotation between shaft and hub that leads to accelerated wear, keyway damage, and costly component failure in demanding milling operations.
- Genuine Bomag OEM Part — Sourced directly from Bomag, part number 83670057 carries the assurance of authentic OEM provenance — critical for maintaining the performance and longevity of high-value milling equipment.
A key block — also called a machine key or shaft key — is a small, precision-fitted component seated in a keyway cut into a rotating shaft and its mating hub or gear. It transmits torque between the two components, preventing slippage and ensuring that power is transferred efficiently through the drivetrain. When a key block wears, shears, or becomes loose, the shaft and hub begin to spin independently, causing immediate loss of drive and progressive damage to the surrounding keyway surfaces — repairs that are far more costly than a timely key replacement.
Part Details
| Part Number | 83670057 |
|---|---|
| Brand | Bomag |
| Part Type | Genuine OEM |
| Description | Key Block |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Cold Milling Machine | BM1000/30-2 | 00800665 |
| Cold Milling Machine | BM1000 30-2 | 00800667 |
| Cold Milling Machine | BM1200 30-2 | 00800669, 00800671 |
| Cold Milling Machine | BM1300/30-2 | 00800673 |
| Cold Milling Machine | BM1300 30-2 | 00800675 |
| Cold Milling Machine | BM 2000/60-2 | 00800693, 00800695 |
| Cold Milling Machine | BM 1200/30 | 00824963 |
| Cold Milling Machine | BM 1300/30 | 00824965, 00825095 |
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.
