Multiquip EM903169 Inner Cup

The Multiquip EM903169 is a genuine OEM Inner Cup designed for C30HD, WM120, and EM120 series equipment. As an authorized Multiquip replacement part, EM903169 is manufactured to the same specifications as the original component, ensuring a direct, confident swap with no guesswork. This Inner Cup is confirmed to fit a broad range of Mayco concrete pump, Whiteman mortar mixer, and Essick mixer models including C30HDGA, C30HDZ, C30HDG, C30HDN, C30HDNI, C30HD, WM120SH, WM120PH, EM120SM, and the EM120S and EM120P series.

Key Features

• Genuine OEM Construction — Manufactured to Multiquip's original material and dimensional tolerances, so sealing performance matches what the machine was built around.
• Direct Drop-In Replacement — Engineered to seat correctly within the bearing or seal housing without rework, matching the original cup's taper and shoulder geometry.
• Broad Confirmed Fitment — Compatible with C30HD, C30HDGA, C30HDZ, C30HDG, C30HDN, C30HDNI, WM120SH, WM120PH, EM120SM, EM120S, and EM120P series machines.
• Sustained Load Distribution — A properly fitted inner cup maintains correct bearing race alignment, preventing uneven wear that can lead to premature bearing failure and increased operating noise.
• Sourced from an Authorized Distributor — Sold by DHS Equipment as an authorized Multiquip parts dealer, giving you confidence in part authenticity and accurate fitment verification.

An inner cup — also known as a bearing cup or outer race — is the fixed ring within a tapered roller bearing assembly that the rolling elements travel against. It works in tandem with the inner cone to distribute radial and axial load across the bearing, keeping rotating shafts properly aligned under the mechanical stress of mixing or pumping operations. When the inner cup becomes worn, pitted, or spalled, the bearing loses its ability to maintain tight shaft alignment, resulting in vibration, heat buildup, and accelerated damage to surrounding components.

For questions about fitment or to confirm compatibility with your specific serial number, contact the DHS Equipment team before ordering.

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.