The Chelsea 442 Series Power Take-Off Assembly, part number 442ZUFNX-A5XR or 442ZUFNXA5XR, is a 6-bolt mounting PTO configured with air shift actuation and a 0.391:1 gear ratio. The output is a 1-1/4" round standard shaft, and the unit mounts via standard configuration with metric studs. This assembly runs without a pressure lube system, relying instead on greaseable output shafts for routine maintenance. The cast iron housing and tapered cone bearings are characteristic of the 442 Series, suited for light-to-medium duty vocational applications including service trucks, dump trucks, and towing and recovery vehicles. Call us to confirm proper fit for your transmission application.
Typical applications for the 442 Series include tow trucks, service trucks, dump trucks, and small aerial trucks. The series intermittent torque range is rated at 201-300 lb-ft (check application pages for the actual torque rating applicable to this specific configuration). Shaft power for the series is rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM.
Parker Chelsea service and parts documentation for this series includes the 442 Series Owner's Manual, 442 Series Parts List (HY25-2442-M1_US), and the Chelsea Service Manual (HY25-6442-M1/US). Contact Pro Gear and Transmission to confirm fitment for your specific transmission.
Features
Chelsea 442 Series, 6-bolt transmission mount with metric studs
Air shift actuation for remote engagement
0.391:1 gear ratio
1-1/4" round standard output shaft
No pressure lube system; greaseable output shafts for maintenance
Cast iron housing with tapered cone bearings for long service life
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 across a wide range of vocational markets, including aerial, construction, forestry, snow and ice, and fire and rescue equipment. The 442 Series design incorporates a low-profile shift cover and 360-degree rotatable output flanges for improved clearance in tight installations. Thirty-six output configurations and eleven internal speed ratios are available across the series, making it adaptable to a broad range of hydraulic pump and accessory drive setups.Typical applications for the 442 Series include tow trucks, service trucks, dump trucks, and small aerial trucks. The series intermittent torque range is rated at 201-300 lb-ft (check application pages for the actual torque rating applicable to this specific configuration). Shaft power for the series is rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM.
Parker Chelsea service and parts documentation for this series includes the 442 Series Owner's Manual, 442 Series Parts List (HY25-2442-M1_US), and the Chelsea Service Manual (HY25-6442-M1/US). Contact Pro Gear and Transmission to confirm fitment for your specific transmission.
