The Chelsea 680 Series Power Take-Off, part number 680XQAHX-A3RY or 680XQAHXA3RY, is an 8-bolt mount PTO built for medium to heavy-duty manual transmission applications. The cast iron housing pairs with tapered cone bearings on the output shaft for a high intermittent torque rating up to 375 lb-ft (508 Nm) at the series level. The 680 Series covers Eaton Fuller, Volvo/Mack, and Daimler/Detroit transmission families, with a deep-mount housing option for Mack applications. The space-saving air shift cover maximizes clearance under the chassis. Common vocational uses include pneumatic blowers, aerial equipment, dump trucks, refuse, and fire and rescue. Call us to confirm the correct fit for your transmission and pump configuration.
Features
8-bolt mounting for broad manual transmission coverage including Eaton Fuller, Volvo/Mack, and Daimler/Detroit
Cast iron housing with tapered cone bearings on both input and output shafts for high load capacity
Series intermittent torque rating of 375 lb-ft (508 Nm); continuous operation supported with 30% de-rating
56+ HP output power; shaft power rated at 71 HP at 1,000 RPM
Air shift cover design saves space and maximizes clearance under the truck
Deep-mount housing option available for Mack transmission applications
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Air (Wire/Cable or Mechanical options also available in series)
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Daimler/Detroit
- Housing Material: Cast Iron
- Output Power: 56+ HP (51+ kW)
- Shaft Power: 36 HP at 500 RPM, 71 HP at 1,000 RPM, 107 HP at 1,500 RPM
- Intermittent Torque (Series): 375 lb-ft (508 Nm) - check application pages for actual rating
- Continuous Operation: Yes, with 30% de-rating
- Lubricant Type: No Pressure Lube (X designation)
- NMFC Code: 128520 / Hydraulic PTOs, Pumps, Motors
