Description
The Chelsea 442 Series Power Take-Off Assembly, part number 442ZUFNX-A5RF or 442ZUFNXA5RF, is a 6-bolt mount PTO built for light-to-medium duty vocational applications including dump trucks, tow trucks, and service trucks. This unit runs a 0.391:1 gear ratio with air shift actuation, a 1-1/4″ round standard output shaft, and standard mount with metric studs. The no-pressure-lube configuration keeps the installation straightforward. The cast iron housing and tapered cone output shaft bearings are characteristic of the 442 Series, which carries an intermittent torque rating of up to 250 lb-ft across the series. Greaseable output shafts and a 360-degree rotatable output flange option give installers clearance flexibility. Call us to confirm proper fit for your transmission application.
Features
Chelsea 442 Series, 6-bolt mounting for compatibility with a wide range of transmission applications
Air shift actuation (code A)
0.391:1 gear ratio (code A)
1-1/4″ round standard output shaft (code XD)
Standard mount with metric studs (code G)
No-pressure-lube configuration (code X)
Cast iron housing with tapered cone output shaft bearings for extended service life
Greaseable output shafts and low-profile shift cover
Tech Specs
- Product Series: 442
- Input Gear Designator: AH
- Gear Ratio: 0.391:1
- Mounting Option: Standard Mount with Metric Studs
- Shift Type: Air Shift
- Output Option: 1-1/4″ Round Standard Shaft
- Assembly: 3
- Lubricant: No Pressure Lube
Additional Information
The Chelsea 442 Series is engineered for 6-bolt transmission applications and suits vocational markets including aerial, construction, forestry, fire and rescue, and municipal equipment. Common applications include snow and ice trucks, dump trucks, service trucks, and towing and recovery trucks. The series offers eleven internal speed ratios and thirty-six output options, including Chelsea’s 360-degree rotatable output flange. Series intermittent torque rating is 250 lb-ft (339 Nm); check application pages for actual torque ratings specific to your configuration. Shaft power output for the series is rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. Parker Chelsea publishes a dedicated 442 Series Service Manual (HY25-6442-M1/US) and Parts List (HY25-2442-M1_US) for reference during installation and maintenance.
