The Chelsea 680 Series Power Take-Off, part number 680XQAHX-A6XD or 680XQAHXA6XD, is built for medium to heavy duty manual transmission applications that use an 8-bolt PTO aperture. The 680 Series features a cast iron housing with tapered cone bearings on the output shaft, designed to handle higher torque demands such as pneumatic blowers and similar continuous-duty equipment. The series is rated for intermittent torque of 301 to 400 lb-ft and supports continuous operation with a 30% de-rating. Shift types in the 680 line include wire/cable and mechanical. Compatible transmissions include Eaton/Fuller, Volvo/Mack, Daimler/Detroit, and others. Call us to confirm proper fit for your specific transmission and application.
Features
Chelsea 680 Series Power Take-Off, 8-bolt mounting configuration
Cast iron housing with tapered cone bearings on the output shaft
Intermittent torque rating: 301 to 400 lb-ft; continuous operation supported with 30% de-rating
Compatible with Eaton/Fuller, Volvo/Mack, Daimler/Detroit manual transmissions
Deep mount housing option available for Mack transmission applications
Shift type options include wire/cable and mechanical
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable, Mechanical
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit
- Intermittent Torque: 301 to 400 lb-ft
- Continuous Operation: Yes, with 30% de-rating
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
- Housing Material: Cast iron
- Output Options: SAE A Pump Flange, SAE B Pump Flange, ISO 7652 Pump Flange, Driveline
- Output Shaft Types: Round Shaft (1-1/4" - 5/16" Key), SAE A (5/8" - 9T), SAE B (7/8" - 13T), SAE BB (1" - 15T), SAE C (1-1/4" - 14T), DIN 5462 Pump Spline, 1410 Companion Flange
- Dimensions (H x W x L): 8 in. x 10 in. x 14 in.
Additional Information
The Chelsea 680 Series is widely used across vocational and municipal applications including dump trucks, refuse trucks, aerial equipment, fire and rescue vehicles, service trucks, and snow and ice removal equipment. The space-saving air shift cover is designed to maximize clearance under the truck. The PTO input shaft uses tapered bearings rather than needle bearings for greater load-bearing capability. With four internal speed ratios and ten shift options across the series, the 680 line covers a broad range of operational requirements. Part number 680XQAHX-A6XD is also referenced as SP680XQAHX-A6XD. NMFC class reference: 128520 (Hydraulic PTOs, Pumps, Motors). Relevant Parker documentation for this series includes the 680 Series Parts List (HY25-2660-M1_US), the 680 Series Sales Literature, and the 340/348/442/447/489/660/680/823/863/880 Series Owner's Manual.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
