The Chelsea 680 Series Power Take-Off, part number 680XRAHX-A5RK or 680XRAHXA5RK, is a medium- to heavy-duty PTO built for manual transmissions with an 8-bolt PTO aperture. The cast iron housing and tapered cone bearings on the output shaft support the 680 Series' intermittent torque range of 301 to 400 lb-ft, with continuous operation available at a 30 percent de-rating. This series is engineered for higher-torque applications such as pneumatic blowers, aerial equipment, dump trucks, refuse vehicles, and fire and rescue apparatus. Shift options include wire/cable and mechanical. The 680 Series also offers a deep-mount housing option suited to Mack transmission applications. Call us to confirm proper fit for your specific transmission and application.
Features
8-bolt mounting pattern for broad manual transmission coverage including Eaton/Fuller, Volvo/Mack, and Daimler/Detroit
Cast iron housing with tapered cone bearings on the output shaft for extended service life
Intermittent torque range: 301 to 400 lb-ft (501+ Nm); continuous operation with 30% de-rating
Output options include SAE A, SAE B, SAE BB, and SAE C pump flanges, plus driveline output
Deep-mount housing option available for Mack transmission applications
Wire/cable and mechanical shift types supported
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable, Mechanical
- Intermittent Torque: 301 to 400 lb-ft (501+ Nm); series reference 375 lb-ft (508 Nm) - confirm per application
- Continuous Operation: Yes, with 30% de-rating
- Output Shaft Types: SAE A (5/8" - 9T) Pump Spline, SAE B (7/8" - 13T) Pump Spline, SAE BB (1" - 15T) Pump Spline, SAE C (1-1/4" - 14T) Pump Spline, DIN 5462 Pump Spline, Round Shaft (1-1/4" - 5/16" Key), 1410 Companion Flange
- Output Flanges: SAE A, SAE B, ISO 7652, Driveline
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit
- Lubricant: X = No Pressure Lube
- Shaft Power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
- Housing: Cast Iron
- PTO Aperture: 8-Bolt
Additional Information
The Chelsea 680 Series is suited for vocational applications including aerial work platforms, snow and ice removal, fire and rescue, dump trucks, refuse vehicles, service trucks, and blower and product pump systems. The space-saving air shift cover is designed to maximize clearance under the truck. The input shaft uses tapered bearings rather than needle bearings for greater load-bearing capability. The 680 Series offers 32 output options, four internal speed ratios, and ten shift configurations. Part number 680XRAHX-A5RK is also referenced as SP680XRAHX-A5RK. NMFC classification: 128520 (Hydraulic PTOs, Pumps, Motors, etc.). Not sure this is the right PTO for your truck? Give us a call.Parts Manual: Chelsea 680 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
