Description
The Chelsea 442 Series Power Take-Off, part number 442GRJAX-W5XK or 442GRJAXW5XK, is a 6-bolt mount PTO built for light-to-medium duty vocational work. It runs a 0.391:1 gear ratio, engages via air shift, and delivers power through a 1-1/4″ round standard output shaft. Mounting is standard configuration with metric studs. The unit uses no pressure lubrication (splash-lube design), and the output shaft is greaseable for extended service intervals. The cast iron housing and tapered cone output shaft bearings are characteristic of the 442 Series, giving this family a torque rating in the 250 lb-ft range and output power up to 55 HP at the series level. Typical applications in the 442 lineup include dump trucks, tow trucks, service trucks, and aerial units. Call us to confirm proper fit for your transmission.
Features
442 Series, 6-bolt transmission mount with metric studs
Gear ratio: 0.391:1
Shift type: Air Shift
Output: 1-1/4″ round standard shaft
No pressure lube (splash lubrication) design
Cast iron housing with tapered cone output shaft bearings
Greaseable output shaft for extended service life
Low-profile shift cover with 360-degree rotatable output flange option
Tech Specs
- Product Series: 442
- Input Gear Designator: AH
- Gear Ratio: 0.391:1
- Mounting Option: Standard Mount with Metric Studs (6-Bolt)
- Shift Type: Air Shift
- Output Option: 1-1/4″ Round Standard Shaft
- Lubricant: No Pressure Lube (Splash)
- Assembly: 3
Additional Information
The Chelsea 442 Series is suited for vocational applications including dump trucks, tow and recovery trucks, service trucks, snow and ice trucks, and aerial units. The series offers eleven internal speed ratios and multiple shift options, making it adaptable across a wide range of 6-bolt transmission configurations. The rotatable output flange design allows clearance adjustments without repositioning the entire unit. For specific application and transmission compatibility, contact Pro Gear and Transmission directly.








