The Multiquip 1139 is a genuine OEM Woodruff Key #810 designed for a wide range of Multiquip and Whiteman walk-behind and ride-on power trowel models, including the J36, B46, HTN, JWN, CA, JA, and HDA series. As an authorized Multiquip parts source, DHS Equipment supplies this exact OEM component to ensure correct fitment and consistent performance across compatible machines. The 1139 Woodruff Key #810 is the factory-specified keying component, sourced directly from Multiquip to match original build tolerances. Verify your model against the fitment list to confirm compatibility before ordering.
Key Features
- Genuine OEM Keying Accuracy — Factory-matched #810 Woodruff profile ensures the key seats flush in both shaft and hub keyways without play or misalignment.
- Direct Drop-In Fitment — Dimensionally identical to the original, this key slides into the existing keyway slot without machining or modification to the shaft or hub.
- Broad Trowel Series Coverage — Compatible with J36, B46, HTN, JWN, CA, JA, BA, HDA, and additional Whiteman and Multiquip walk-behind and ride-on trowel families.
- Torque Transmission Integrity — A correctly fitted Woodruff key locks the drive component to the shaft, ensuring full and consistent torque transfer to the trowel blades during operation.
- OEM Part Traceability — Supplied under Multiquip part number 1139, making cross-reference and reorder straightforward for fleet maintenance and parts records.
A Woodruff key is a small, semi-circular drive key that fits into a matching slot milled into a shaft and a corresponding keyway in a hub or pulley. Its role is to prevent rotational slippage between the two components, locking them together so that torque is transmitted cleanly from the shaft to the attached part. On a power trowel, a failed or missing Woodruff key causes the hub or drive component to spin freely on the shaft, resulting in a complete loss of blade drive and rendering the machine unable to finish concrete. Replacing a worn or sheared key promptly restores full mechanical engagement and protects the shaft and hub from further damage caused by fretting or impact.
Part Details
| Part Number | 1139 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Woodruff Key #810 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Whiteman Walk-Behind Power Trowels | BH11C |
| Whiteman Walk-Behind Power Trowels | BH90C |
| Whiteman Walk-Behind Power Trowels | BS90C |
| Whiteman Walk-Behind Power Trowels | J36E2 |
| Whiteman Walk-Behind Power Trowels | JH55C |
| Whiteman Walk-Behind Power Trowels | JH90C |
| International Walk-Behind Power Trowels | JS36H55 |
| Walk-Behind Trowels | JS36H90H |
| Walk-Behind Trowels | JS36LE |
| Power Trowels | JWN24HTCSL |
| Power Trowels | JWN24HSCSL |
| Whiteman Walk-Behind Power Trowels | B46 |
| Whiteman Walk-Behind Power Trowels | B46S90 |
| International Walk-Behind Power Trowels | B SERIES CHINA |
| Whiteman Walk-Behind Power Trowels | CA4HC/CA5BC |
| Whiteman Walk-Behind Power Trowels | HDA-SERIES |
| Whiteman Walk-Behind Power Trowels | J36-M30 Series |
| International Walk-Behind Power Trowels | JS36H90 |
| Whiteman Walk-Behind Power Trowels | JS60C |
| Saws | SCT36 |
| Saws | SCT46 |
| Mechanical Ride-On Trowels | BHN |
| Mechanical Ride-On Trowels | HRT |
| Mechanical Ride-On Trowels | HTN-31VTCSL5 |
| Walk-Behind Trowels | EPOXY-SERIES |
| Heavy Duty Series | HPHA36C5H |
| Walk-Behind Trowels | HPLA46411H |
| Walk-Behind Trowels | HPHA46411H |
| Walk-Behind Trowels | B-SERIES |
| C and CA Series | CA4HC |
| Power Trowels | J36R60 |
| Power Trowels | J36R90H |
| Power Trowels | J36R90 |
| Walk-Behind Trowels | BS46HLE |
| Mechanical Ride-On Trowels | HTN27KTCSL |
| Mechanical Ride-On Trowels | HTN28KTCSL |
| Walk-Behind Trowels | HPLA-HPHA-36 |
| Walk-Behind Trowels | J36S60 |
| Saws | SCT36ANDSCT46 |
| Walk-Behind Trowels | PRO36 |
| Walk-Behind Trowels | PRO46 |
| Mechanical Ride-On Trowels | HTO-31VTCSL5 |
| Mechanical Ride-On Trowels | HTN27K-28K-TCSL |
| Power Trowels | JWN |
| Walk-Behind Trowel | HPHA-46-SERIES |
| Walk-Behind Trowels | BA-SERIES |
| Walk-Behind Trowels | C-4 |
| Power Trowels | CA4.4HM |
| Walk-Behind Trowels | J-SERIES |
| Power Trowels | J36H55 |
| Power Trowels | J36H90H |
| Power Trowels | J36H90 |
| Walk-Behind Trowels | M30H55 |
| Walk-Behind Trowels | JA-SERIES |
| Walk-Behind Trowels | BS46H11H |
| International Ride-On Power Trowels | HTNS5S-2 |
| J and JA Series | J36 |
| International Walk-Behind Power Trowels | BS46H11 |
| International Walk-Behind Power Trowels | BS46H90 |
| International Walk-Behind Power Trowels | CA-4-4H |
| Whiteman Walk-Behind Power Trowels | CA4HM |
| International Walk-Behind Power Trowels | CS24H55E |
| Whiteman Walk-Behind Power Trowels | J3036H55 |
| International Walk-Behind Power Trowels | J SERIES CHINA |
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.
