The Chelsea 880GRAHX-P3XS is an 880 Series 8-bolt Power Take-Off built for heavy-duty, high-torque applications on manual transmissions with an 8-bolt aperture. The 880 Series features constant mesh input gears, a rugged cast iron housing, and tapered cone bearings designed to handle demanding loads. Intermittent torque rating for the series reaches 500 lb-ft (678 Nm), with continuous operation supported at a 30% de-rating. Output options across the series include SAE B, SAE C, and ISO 7652 pump flanges as well as driveline configurations. A removable shift cover simplifies backlash adjustment. Typical applications include fire trucks, oil field equipment, bulk haulers, aerial units, and large recovery trucks. Sold by Pro Gear and Transmission.
Features
8-bolt mounting fits most manual transmissions with 8-bolt aperture
Intermittent torque rating up to 500 lb-ft (678 Nm) for the 880 Series
Continuous operation capable with 30% de-rating
Lever control shift standard; optional air control shift available
Tapered cone bearings for heavy load capacity
Removable shift cover for easier, more accurate backlash adjustment
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Lever (standard); Air control (optional)
- Intermittent Torque: 500 lb-ft (678 Nm) - see application pages for actual rating
- Continuous Operation: Yes, with 30% de-rating
- Output Types (series): SAE B Pump Flange, SAE C Pump Flange, ISO 7652 Pump Flange, Driveline
- Output Shaft Options (series): SAE B 7/8"-13T, SAE BB 1"-15T, SAE C 1-1/4"-14T, DIN 5462, 1410 Series Companion Flange
- Shaft Power (series): 48 HP at 500 RPM, 95 HP at 1000 RPM
- Lubricant Type: Pressure Lube or Non-Pressure Lube (by configuration)
- Housing Material: Cast iron
Additional Information
The Chelsea 880 Series is compatible with a wide range of transmission manufacturers including Allison, Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and others. The 880GRAHX-P3XS part number also appears referenced as SP880GRAHX-P3XS. Relevant Parker documentation includes the 880 Series Owner's Manual, 880 Series Parts List (HY25-2880-M1_US), and Chelsea Service Manual (HY25-6880-M1/US).Parts Manual: Chelsea 880 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
