The Multiquip 91001878003 is a genuine OEM Radial Ball Bearing designed for a wide range of Multiquip, Whiteman, Essick, and STOW equipment including concrete mixers, rammers, plate compactors, walk-behind trowels, centrifugal pumps, and diaphragm pumps. As an OEM-sourced component, this bearing matches the exact specification of the original part, ensuring a correct, drop-in fit across compatible models such as MC-42S, MTX70HDR, MTX80HDR, MVC-64H, MVH-R60H, CA4.4HM, QP-204H, and many more. Whether you are servicing a rammer, a mixer drum drive, or a pump impeller shaft, part 91001878003 delivers the consistent performance your machine was built to run on. Sourced directly from Multiquip, this bearing is backed by the same quality standards that went into your original equipment.
Key Features
- Genuine OEM Construction — Manufactured to the same precision tolerance and load rating as the original bearing, maintaining correct shaft alignment and smooth rotational operation across all compatible machine types.
- Direct-Fit Installation — Matches the original bore, outer diameter, and width dimensions so it seats into the housing without modification — ideal for field service and shop rebuilds alike.
- Broad Cross-Equipment Compatibility — A single part number covering concrete mixers (MC-42S, CMS-44S, EC-42S, WC-42S), rammers (MTX70HDR, MTX80HDR, MT77HFR), plate compactors (MVC-64H, MVH-R60H, MVC64VHW, MVB85H), walk-behind trowels (CA4.4HM, CA4HC), and diaphragm and centrifugal pumps (MQ-D305, QP2H, CP-20H).
- Sustained Shaft Support — A correctly fitted radial ball bearing prevents shaft wobble, vibration-induced wear, and premature seal failure — keeping drive components running true through continuous jobsite use.
- OEM Part Number Assurance — Ordering by Multiquip part number 91001878003 confirms you are receiving the correct bearing grade and geometry, eliminating guesswork when sourcing replacements for multi-model fleets.
A radial ball bearing supports rotating shafts by carrying radial loads — forces that act perpendicular to the shaft axis — while allowing smooth, low-friction rotation. In equipment like concrete mixers, rammers, plate compactors, and pumps, these bearings are found in drive shafts, impeller assemblies, exciter units, and gear housings where they absorb the continuous dynamic loads generated during operation. When a radial ball bearing begins to wear, operators may notice increased vibration, unusual noise, heat buildup near the housing, or erratic machine behavior. Left unaddressed, a failed bearing can accelerate damage to surrounding seals, shafts, and housings, turning a straightforward parts replacement into a significantly more involved repair.
For fitment questions or help confirming compatibility with your specific serial number, contact DHS Equipment before ordering.
Part Details
| Part Number | 91001878003 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Radial Ball Bearing |
Compatibility & Fitment
| Name | Model |
|---|---|
| Concrete Mixers | MC-42S |
| MT Series | MT77HFR |
| Rammers | MTX70HDR |
| Rammers | MTX80HDR |
| Plate Compactors | MVC-64H |
| Plate Compactors | MVH-R60H |
| Plate Compactors | MVH-R60W |
| MQ Mixers | MC44S |
| Concrete Mixers | CMS-44S |
| Concrete Mixers | CMS-4S |
| Concrete Mixers | WC-42S |
| Plate Compactors | MVC64VHW |
| Diaphragm Pumps | MQD2H |
| MQ Diaphragm Pumps | MQ-D305 |
| MQ Diaphragm Pumps | MQ-D306HA |
| STOW Diaphragm Pumps | SDP-3 |
| STOW Centrifugal Pumps | CP-20H |
| Power Trowels | CA4.4HM |
| Plate Compactors | MVC-64HW |
| MQ Diaphragm Pumps | MQ-D206H |
| Diaphragm Pumps | MQD2D3H |
| MQ Diaphragm Pumps | D306 |
| STOW Diaphragm Pumps | SDP-2 |
| MQ Centrifugal Pumps | QP-204H |
| Centrifugal Pumps | QP2H |
| International Walk-Behind Power Trowels | CA-4-4H |
| Whiteman Walk-Behind Power Trowels | CA4HM |
| Concrete Mixers | EC-42S |
| Plate Compactors | MVB85H |
| Plate Compactors | MVC64VH |
| C and CA Series | CA4HC |
| STOW Diaphragm Pumps | CA90749 |
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.
