The Chelsea 447 Series Power Take-Off, part number 447KWESX-A3AF or 447KWESXA3AF, is a 6-bolt mounted PTO designed around a one-piece input gear with a space between the two sets of gear teeth. That geometry eliminates interference problems inside the transmission PTO opening, a common fitment headache on a wide range of transmissions including Eaton/Fuller and ZF units. Shift is air shift. The output shaft is a 1" 15-tooth SAE BB shaft on an SAE B 2 or 4-bolt flange. Shaft power is rated at 21 HP at 500 RPM and 43 HP at 1,000 RPM; intermittent torque ranges from 201 to 300 lb-ft (check application pages for your specific rating). Typical applications include utility trucks, dump trucks, aerial equipment, and snow and ice removal vehicles. Call us to confirm proper fit for your transmission.
Features
6-bolt mounting, no adapter plate required for most installations
Air shift
SAE B 2 or 4-bolt flange with a 1" 15-tooth SAE BB shaft
Shaft power: 21 HP at 500 RPM, 43 HP at 1,000 RPM
Intermittent torque: 201-300 lb-ft (see application pages for actual rating)
One-piece input gear design eliminates interference inside the transmission PTO opening
Compatible with Eaton/Fuller, ZF, and other transmission manufacturers
Tech Specs
- Mounting Type: 6-Bolt
- Mounting Option: Standard Mount without Stud Kit (K)
- Gear Ratio Code: W
- Input Gear Designator: ES
- Lube Option: No Pressure Lube (X)
- Shift Option: Air Shift (A)
- Assembly Arrangement: 3
- Output Option: SAE B 2 or 4-Bolt Flange, SAE BB Shaft (1" 15T) (AF)
- Transmission Compatibility: Eaton/Fuller, ZF, Other
- Shaft Power: 21 HP (500 RPM), 43 HP (1,000 RPM), 16 kW (500 RPM), 32 kW (1,000 RPM)
- Output Power: 36-45 HP, 31-40 kW
- Intermittent Torque: 201-300 lb-ft / 301-400 Nm; 225 lb-ft / 305 Nm (check application pages for actual torque ratings)
- Continuous Torque: De-rate intermittent rating by 30% (check application pages for actual torque ratings)
Additional Information
The Chelsea 447 Series shares the wide option set of the popular 442 Series while adding special configurations for Eaton FS series and Nissan/UD MLS series transmissions. Strong tapered bearings replace the needle bearings found on some competing designs, increasing load-bearing capability. The series offers twenty-six output options including Chelsea's 360-degree rotatable flange, four internal speed ratios, and eleven shift options. Lubrication designation: X in this part number indicates no pressure lube required. Typical markets include aerial equipment, vocational and municipal trucks, dump and trailer applications, fire and rescue, and service trucks.Parts manual and diagrams: Chelsea 447 Series PTO parts list with prices
