The Chelsea 660 Series Power Take-Off Assembly, part number 660XSAHX-A3XD or 660XSAHXA3XD, is a 6-bolt mounted PTO built for medium- to heavy-duty vocational applications. It uses a wire/cable mechanical shift and features a 1-1/4" round output shaft with keyway. Intermittent torque capacity for the 660 Series reaches up to 375 lb-ft (508 Nm); check Chelsea application pages for the actual rating specific to your transmission. Compatible transmissions include Eaton/Fuller, Volvo/Mack, Hino, and other 6-bolt manual units. Shaft power output runs 36 HP at 500 RPM, 71 HP at 1000 RPM, and 107 HP at 1500 RPM. One-piece gears, cast iron bearing caps, and tapered bearings on both input and output shafts contribute to the series' load-handling capability. Pro Gear and Transmission carries this genuine Chelsea part. Call us to confirm proper fit for your application.
Cross-reference numbers for this assembly: 1450-660XSAHXA3XD, 1450660XSAHXA3XD, 660XSAHX-A3XD, 660XSAHXA3XD, CHL660XSAHXA3XD. The Chelsea 660 Series is suited for vocational markets including aerial devices, dump trucks, service trucks, snow and ice removal equipment, and blower and product pump applications. Output options across the 660 Series include SAE A, SAE B, and ISO pump flanges, driveline, and multiple pump spline configurations. Four internal speed ratios and ten shift options are available within the series. Consult Chelsea application pages or call Pro Gear and Transmission to confirm the correct configuration for your specific truck and transmission.
Features
6-Bolt mounting for compatibility with popular manual transmissions including Eaton/Fuller, Volvo/Mack, and Hino
Wire/cable mechanical shift type
1-1/4" round output shaft with keyway
Intermittent torque capacity up to 375 lb-ft (508 Nm) for the 660 Series - verify actual rating on Chelsea application pages
Shaft power: 36 HP at 500 RPM, 71 HP at 1000 RPM, 107 HP at 1500 RPM
One-piece gears, cast iron bearing caps, and greaseable shaft options for extended service life
Tech Specs
- Intermittent Torque: Up to 375 lb-ft (508 Nm) - Check Chelsea Application Pages for actual torque rating
- Continuous Operation: Yes, with 30% de-rating
- Shift Type: Wire/Cable, Mechanical
- Output Power: 56+ HP (51+ kW)
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, Hino, Other 6-bolt manual
- Output Shaft Type: 1-1/4" Round with 5/16" Key
- Mounting Type: 6-Bolt
- Shaft Power: 36 HP (500 RPM), 71 HP (1000 RPM), 107 HP (1500 RPM); 27 kW (500 RPM), 53 kW (1000 RPM), 80 kW (1500 RPM)
- Dimensions (H x W x L): 8.38" x 10.38" x 14.25"
Additional Information
Cross-reference numbers for this assembly: 1450-660XSAHXA3XD, 1450660XSAHXA3XD, 660XSAHX-A3XD, 660XSAHXA3XD, CHL660XSAHXA3XD. The Chelsea 660 Series is suited for vocational markets including aerial devices, dump trucks, service trucks, snow and ice removal equipment, and blower and product pump applications. Output options across the 660 Series include SAE A, SAE B, and ISO pump flanges, driveline, and multiple pump spline configurations. Four internal speed ratios and ten shift options are available within the series. Consult Chelsea application pages or call Pro Gear and Transmission to confirm the correct configuration for your specific truck and transmission.
