The Chelsea 680 Series Power Take-Off, part number 680ZFDAX-A5RE or 680ZFDAXA5RE, is a medium- to heavy-duty PTO built for 8-bolt transmission openings. It mounts to Eaton/Fuller and Volvo/Mack transmissions, with a deep-mount housing option specifically for Mack applications. The wire/cable mechanical shift type keeps the air shift cover compact for tight under-cab clearance. Output is rated at 56+ HP and 51+ kW, with shaft power of 36 HP at 500 RPM, 71 HP at 1000 RPM, and 107 HP at 1500 RPM. Intermittent torque is rated 301-400 lb-ft (501+ Nm), with application-specific ratings up to 375 lb-ft (508 Nm) per Chelsea application charts. The 1-1/4" round output shaft with key suits blower and pump drive work. Available from Pro Gear and Transmission. Call us to confirm proper fit for your application.
The Chelsea 680 Series is built around a cast iron housing with tapered cone bearings on the output shaft for extended service life under high-torque duty cycles. The input shaft also uses tapered bearings rather than needle bearings, providing greater load-bearing capability. The 680 Series offers 32 output options including Chelsea's 360-degree rotatable flange, four internal speed ratios, and ten shift configurations, making it adaptable across a wide range of vocational installations including aerial, snow and ice removal, fire and rescue, dump truck, refuse, service truck, and blower and product pump applications.
Features
Chelsea 680 Series PTO, part number 680ZFDAX-A5RE or 680ZFDAXA5RE
8-bolt mounting type for broad manual transmission coverage including Eaton/Fuller and Volvo/Mack
Deep-mount housing option engineered for Mack transmission applications
Wire/cable mechanical shift with space-saving cover for maximum under-truck clearance
1-1/4" round output shaft with key; intermittent torque rated 301-400 lb-ft (501+ Nm), up to 375 lb-ft (508 Nm) per application
Output power 56+ HP (51+ kW); shaft power 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
Suited for higher-torque vocational work including pneumatic blowers, dump, refuse, aerial, and fire/rescue applications
Tech Specs
- Intermittent Torque: 301-400 lb-ft / 501+ Nm; up to 375 lb-ft (508 Nm) per application charts
- Shift Type: Wire/Cable, Mechanical
- Mounting Type: 8-Bolt
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Other
- Output Shaft Type: 1-1/4" Round with Key
- Output Power: 56+ HP / 51+ kW
- Shaft Power: 36 HP (27 kW) at 500 RPM, 71 HP (53 kW) at 1000 RPM, 107 HP (80 kW) at 1500 RPM
- Continuous Operation: Yes, with 30% de-rating
Additional Information
The Chelsea 680 Series is built around a cast iron housing with tapered cone bearings on the output shaft for extended service life under high-torque duty cycles. The input shaft also uses tapered bearings rather than needle bearings, providing greater load-bearing capability. The 680 Series offers 32 output options including Chelsea's 360-degree rotatable flange, four internal speed ratios, and ten shift configurations, making it adaptable across a wide range of vocational installations including aerial, snow and ice removal, fire and rescue, dump truck, refuse, service truck, and blower and product pump applications.
