The Multiquip 803631 Jackshaft Bearing is a genuine OEM component designed for MQ Mixer series equipment. Sourced directly from Multiquip, this bearing meets the exact tolerances and load ratings required for proper jackshaft operation in your concrete mixer. It is a direct-fit replacement that installs into the original mounting position without modification, making it a straightforward swap during scheduled maintenance or unplanned repair. Confirmed fitment includes the MQ Mixers series, so verify your model before ordering to ensure compatibility.
Key Features
- Genuine OEM Tolerancing — Manufactured to Multiquip's exact radial load and dimensional specifications for the jackshaft assembly, ensuring consistent rotational precision under continuous mixer operation.
- Direct Drop-In Replacement — Matches the original bearing seat dimensions and shaft interface, so it seats correctly into the existing housing without additional fitting or machining.
- Confirmed MQ Mixer Fitment — Verified for MQ Mixer series equipment; cross-reference part number 803631 against your model to confirm application before installation.
- Sustained Drive Efficiency — A properly functioning jackshaft bearing maintains smooth, low-friction power transfer from the engine to the drum drive, keeping mixing output consistent across the full load range.
- Resists Premature Wear — Built to handle the cyclic radial loads generated during drum rotation, helping the bearing maintain its rated service life even under heavy mixing schedules.
The jackshaft bearing supports the jackshaft — the intermediate drive shaft that transfers power from the engine to the drum drive system in a concrete mixer. It allows the shaft to spin freely within its housing while absorbing radial forces generated during operation. When this bearing wears or fails, it can produce audible grinding or rumbling, cause the jackshaft to run with excess play, and ultimately lead to uneven drum rotation or drivetrain damage if left unaddressed. Replacing it promptly with a correctly rated OEM bearing restores smooth power delivery and protects the surrounding drive components from accelerated wear.
For questions about fitment or ordering, contact the DHS Equipment team directly.
Part Details
| Part Number | 803631 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Jackshaft Bearing |
Compatibility & Fitment
| Name | Model |
|---|---|
| MQ Mixers | MC12PH |
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.
