The Chelsea 447 Series Power Take-Off, part number 447KWESX-A3XK or 447KWESXA3XK, is built around a one-piece input gear with a gap between its two sets of gear teeth, a design that prevents interference inside the PTO aperture on transmissions where adjacent gear contact is a concern. The 447 Series mounts via a 6-bolt pattern and ships with shift options including wire/cable and mechanical. Output goes through an SAE B 2 or 4-bolt flange with a 7/8" 13-tooth SAE B shaft. Intermittent torque ratings for this series fall in the 201-300 lb-ft range (verify actual rating on the Chelsea application pages for your specific transmission). Compatible transmissions include Eaton/Fuller and ZF models, among others. Call us to confirm proper fit for your application.
Features
6-bolt mounting pattern, no adapter plate required
Air shift
SAE B 2 or 4-bolt flange with a 7/8" 13-tooth SAE B shaft
One-piece input gear eliminates interference inside the transmission PTO opening
Intermittent torque: 201-300 lb-ft (305 Nm series range; confirm actual rating on Chelsea application pages)
Output power: 21 HP at 500 RPM, 43 HP at 1000 RPM (series rating)
Tech Specs
- Intermittent Torque: 201-300 lb-ft / 301-400 Nm (series range; 225 lb-ft / 305 Nm noted - check application pages for actual torque rating)
- 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 B Shaft (7/8" 13T) (XK)
- Output Power: 36-45 HP / 31-40 kW
- Shaft Power: 21 HP (500 RPM), 43 HP (1000 RPM) / 16 kW (500 RPM), 32 kW (1000 RPM)
- Mounting Type: 6-Bolt
- Compatible Transmissions: Eaton/Fuller, ZF, Other
Additional Information
The Chelsea 447 Series shares its shift and output flexibility with the well-known 442 Series, while adding options specifically suited to Eaton FS series transmissions. Tapered bearings replace needle bearings for greater load capacity. The series supports twenty-six output configurations, including Chelsea's 360-degree rotatable flange, four internal speed ratios, and eleven shift options. Typical applications include aerial, vocational, municipal, utility, dump truck, fire and rescue, and snow and ice removal equipment.Parts manual and diagrams: Chelsea 447 Series PTO parts list with prices
