Multiquip EM604 Retaining Ring

The Multiquip EM604 Retaining Ring is a genuine OEM component designed for Whiteman plaster and mortar mixer models WM63E, WM63H5, WM63H8, and WM63SLF. Sourced directly from Multiquip, this retaining ring is an exact match to the original part installed at the factory, ensuring a correct, secure fit without modification. If your mixer is showing signs of shaft movement, component drift, or premature wear on adjacent parts, a worn or missing retaining ring is often the cause — and replacing it with the correct OEM part restores proper alignment and keeps your drivetrain components seated where they belong.

Key Features

• Genuine OEM Construction — Manufactured to Multiquip's exact material and dimensional specifications, ensuring the ring seats and retains with the correct tension for this application.
• Drop-In Installation — Matches the original groove dimensions on WM63-series mixer shafts, allowing straightforward replacement with standard snap ring pliers.
• Broad WM63-Series Fitment — Confirmed compatible with WM63E, WM63H5, WM63H8, and WM63SLF Whiteman mortar and plaster mixers.
• Keeps Drivetrain Components Properly Located — A functioning retaining ring prevents axial movement of gears, bearings, and shafts, protecting surrounding components from accelerated wear.
• Direct Multiquip OEM Part — Part number EM604 is the manufacturer-designated replacement, eliminating guesswork when ordering for mixer maintenance or repair.

A retaining ring — also called a snap ring or circlip — is a small but critical fastening component used to secure rotating or sliding parts, such as bearings, gears, and shafts, within a housing or along a shaft. In a mortar or plaster mixer like the WM63 series, retaining rings hold drivetrain components in their correct axial position, preventing unwanted lateral movement under load. When a retaining ring is worn, deformed, or missing entirely, the parts it was holding in place can shift, causing increased wear on bearings and gears, vibration, and eventual mechanical failure of more expensive components.

Part Details

Compatibility & Fitment

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.