The Multiquip EM623 Spindle Washer 2x1" is a genuine OEM replacement designed for ST30 series concrete pumps. This is a direct OEM replacement sourced through Multiquip's authorized parts program, ensuring the correct dimensions and material grade for your application. Confirmed fitment for ST30 concrete pump models keeps your pump running with components built to the same standards as the original equipment.
Key Features
- Correct Washer Geometry — Manufactured to the exact 2x1" dimensional spec, ensuring proper load distribution and seating at the spindle interface.
- Genuine OEM Quality — Sourced directly through Multiquip's authorized OEM parts program, matching the original material grade and hardness used in production.
- Direct Drop-In Replacement — Installs in the same spindle position as the original, with no reworking of surrounding hardware required.
- Confirmed ST30 Fitment — Verified for ST30 series concrete pump models, so you can order with confidence knowing this is the right washer for your machine.
- Protects Spindle and Mating Surfaces — A correctly sized washer maintains even clamping force and prevents galling or wear on the spindle and adjacent components during pump operation.
A spindle washer sits between fastening hardware and the mating surface at the spindle, distributing clamping load evenly to prevent surface damage and maintain proper torque retention. In a concrete pump environment, where vibration and heavy cyclic loads are constant, an undersized, worn, or incorrect washer can allow fastener loosening, accelerate wear on the spindle assembly, and ultimately compromise pump reliability. Replacing a worn spindle washer with the correct OEM part restores the designed clamping interface and helps maintain the integrity of the spindle assembly over the long term.
Part Details
| Part Number | EM623 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Spindle Washer 2x1" |
Compatibility & Fitment
| Name | Model |
|---|---|
| ST30 | ST30 |
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.
