The Chelsea 660ZQAHX-W3XD or 660ZQAHXW3XD is a 660 Series Power Take-Off designed for medium to heavy-duty vocational applications. The 660 Series mounts to most popular 6-bolt manual transmissions, including Eaton/Fuller and Volvo/Mack, and carries a series torque capacity of up to 375 lb-ft for demanding cycles. The cast iron housing with tapered cone bearings on both the input and output shafts provides long service life under high-load conditions. Continuous operation is supported with a 30% de-rating. Output options within the 660 Series include SAE A, SAE B, and ISO 7652 pump flanges, as well as driveline configurations. Common applications for this series include dump trucks, aerial devices, service trucks, and snow and ice removal equipment. Call us to confirm proper fit for your specific transmission and pump configuration.
Features
Chelsea 660 Series, 6-bolt mounting for most popular manual transmissions including Eaton/Fuller and Volvo/Mack
Series torque capacity up to 375 lb-ft for demanding medium to heavy-duty applications
Cast iron housing with tapered cone bearings on input and output shafts for high load capability
Continuous operation capable with 30% de-rating applied
Output options include SAE A, SAE B, ISO 7652 pump flanges, and driveline configurations
Suited for dump trucks, aerial devices, service trucks, and snow and ice removal equipment
Tech Specs
- Mounting Type: 6-Bolt
- Compatible Transmissions: Eaton/Fuller, Volvo/Mack, and other popular manual 6-bolt transmissions
- Series Torque Capacity: Up to 375 lb-ft (intermittent)
- Continuous Operation: Yes, with 30% de-rating
- Output Types: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Housing Material: Cast iron
- Bearing Type: Tapered cone bearings on input and output shafts
- Shift Type: Wire/Cable or Mechanical (series options)
- Series Output Power: 56+ HP / 51+ kW
- NMFC Code: 128520 (Hydraulic PTOs, Pumps, Motors)
Additional Information
The Chelsea 660 Series is designed as a versatile workhorse for vocational equipment requiring torque capacity above what the Chelsea 442 Series provides. The space-saving air shift cover design maximizes clearance under the truck. The series offers 26 output options, including Chelsea's 360-degree rotatable flange for optimal pump positioning, four internal speed ratios, and ten shift options. Typical markets include aerial, construction, municipal, and other mobile equipment. For Chelsea 660 Series documentation, refer to the 660 Series Parts List (HY25-2660-M1_US) and the 660 Series Sales Literature published by Parker Chelsea.Parts Manual: Chelsea 660 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
