The Multiquip 20933 Bearing Seal Gearbox Kit HHN Helical is a genuine OEM replacement designed for HHN34TVD and HHN31V Whiteman ride-on power trowels. As a direct factory-sourced component, this kit delivers the exact bearing tolerances and seal grades specified for the helical gearbox on these heavy-duty 8-foot mechanical trowels. Verified fitment for HHN34TVD and HHN31V units means no guesswork when ordering a critical drivetrain service kit. DHS Equipment stocks genuine Multiquip parts so you can get your machine back in service with confidence.
Key Features
- Genuine OEM Bearing Precision — Factory-spec bearing tolerancing ensures correct load rating and rotational accuracy for the helical gearbox assembly.
- OEM Seal Grade — Seals are matched to the compression and material requirements of the HHN gearbox, preventing lubricant loss and contamination ingress.
- Complete Gearbox Service Kit — Bundles the bearings and seals needed for a full gearbox rebuild in a single part number, streamlining the repair process.
- Confirmed Fitment for HHN Series — Verified for HHN34TVD and HHN31V Whiteman ride-on trowels; order with confidence using part number 20933.
- Drivetrain Performance Restoration — A worn or failed gearbox bearing or seal causes vibration, lubricant leaks, and blade speed inconsistency; replacing this kit restores smooth, even blade rotation across the full troweling pass.
The helical gearbox on HHN series ride-on trowels transfers engine power to the trowel blade rotor assemblies, with helical gear geometry chosen for its smooth torque delivery and reduced noise under load. The bearings within this gearbox support the rotating shafts under continuous high-load cycles, while the seals retain gearbox oil and exclude water, concrete slurry, and debris from the housing. When bearings wear or seals degrade, lubricant escapes, metal-to-metal contact accelerates gear wear, and blade output becomes uneven — shortening the service life of the entire gearbox. Replacing bearings and seals together as a kit with Multiquip 20933 ensures all wear components are renewed to OEM specification in a single service interval.
Need help confirming this part fits your machine? Contact the DHS Equipment parts team with your model and serial number for verification before ordering.
Part Details
| Part Number | 20933 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Bearing Seal Gearbox Kit HHN Helical |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Ride-On Power Trowels | HHN34TVD |
| Whiteman Ride-On Power Trowels | HHN31V |
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.
Multiquip
Multiquip 32536 Input Hub Assembly Helical Gearbox Superior
