The Chelsea 680GSAHX-A3RY or 680GSAHXA3RY is a Power Take-Off from Chelsea's 680 Series, designed for manual transmissions with an 8-bolt PTO aperture. The 680 Series is built around a cast iron housing with tapered cone bearings on the output shaft, supporting intermittent torque ratings in the 301-400 lb-ft range, with a series-rated maximum of 375 lb-ft. The series delivers 71 HP at 1,000 RPM and supports continuous operation with a 30% de-rating. Shift type for this series is wire/cable or mechanical. The 680 Series covers Eaton/Fuller, Volvo/Mack, and Daimler/Detroit transmission applications, with a deep-mount housing option available for Mack. Common applications include pneumatic blowers, dump trucks, aerial equipment, and refuse vehicles. Call us to confirm proper fit for your application.
Features
8-bolt mounting for manual transmissions with 8-bolt PTO apertures
Cast iron housing with tapered cone bearings on input and output shafts
Intermittent torque rating: 301-400 lb-ft (series max 375 lb-ft, 508 Nm)
Shaft power: 36 HP at 500 RPM, 71 HP at 1,000 RPM, 107 HP at 1,500 RPM
Supports continuous operation with 30% de-rating
Covers Eaton/Fuller, Volvo/Mack, and Daimler/Detroit transmission applications; deep-mount housing option for Mack
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable or Mechanical
- Intermittent Torque: 301-400 lb-ft (series max 375 lb-ft / 508 Nm)
- Continuous Operation: Yes, with 30% de-rating
- Shaft Power: 36 HP (500 RPM), 71 HP (1,000 RPM), 107 HP (1,500 RPM)
- Output Power: 56+ HP / 51+ kW
- Housing: Cast Iron
- Output Shaft Bearings: Tapered Cone
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit
- Dimensions (H x W x L): 8 in. x 10 in. x 14 in.
- NMFC Code: 128520 (Hydraulic PTOs, Pumps, Motors)
Additional Information
The Chelsea 680 Series supports 32 output options, including a 360-degree rotatable flange for flexible pump positioning. Four internal speed ratios and ten shift options are available across the series. The deep-mount housing variant accommodates Mack transmission applications. Typical vocational uses for this series include aerial equipment, snow and ice removal, fire and rescue, dump trucks, service trucks, refuse vehicles, and blower and product pump systems. Parker Chelsea reference documents for this series include the 680 Series Parts List (HY25-2660-M1_US) and the 340/348/442/447/489/660/680/823/863/880 Series Owner's Manual, available through Parker Chelsea.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
