The Chelsea 489 Series Power Take-Off Assembly, part number 489GHAHX-A5GQ or 489GHAHXA5GQ, mounts directly to an 8-bolt transmission opening on most manual transmissions including Eaton Fuller, Mack, and Tremec. The one-piece cast iron housing eliminates the adapter plate needed on some other PTOs, reducing potential leak paths and installation time. Intermittent torque rating for the 489 Series runs 201-300 lb-ft (301-400 Nm), with a 250 lb-ft capacity matching the 442 Series. Output is a greaseable SAE B 2 or 4-bolt flange with a 7/8" 13-tooth SAE B shaft, rotated 90 degrees. The 489 Series is rated at 24 HP at 500 RPM and 48 HP at 1,000 RPM. The air shift type suits a wide range of vocational applications including utility trucks, dump trucks, and snow and ice removal equipment. Strong tapered bearings replace needle bearings for greater load-bearing capability. Internal parts are common to the Chelsea 442 Series, simplifying parts stocking. Sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
The Chelsea 489 Series is designed for vocational and municipal equipment including utility trucks, dump trucks and trailers, snow and ice removal equipment, and fire and rescue vehicles. Twenty-seven output options are available across the series, including a 360-degree rotatable flange. Eleven internal speed ratios and shift configurations make the 489 Series adaptable across a broad range of manual transmission applications. The kit-style assembly design means replacement internal parts are straightforward to source and install, and those internal components are interchangeable with the Chelsea 442 Series.
Features
8-bolt one-piece cast iron housing mounts directly to transmission opening, no adapter plate required
Air shift type
Greaseable SAE B 2 or 4-bolt flange with a 7/8" 13-tooth SAE B shaft, rotated 90 degrees; greaseable output options reduce spline fretting and corrosion
Intermittent torque rating: 201-300 lb-ft (301-400 Nm); shaft power 24 HP at 500 RPM, 48 HP at 1,000 RPM
Internal parts common to Chelsea 442 Series for simplified service and parts interchangeability
Kit-style design makes field service straightforward; tapered bearings provide greater load capacity than needle bearings
Tech Specs
- PRODUCT SERIES: 489
- MOUNTING TYPE: 8-Bolt (direct to transmission, no adapter plate)
- MOUNTING OPTION: Standard Mount with Metric Studs (G)
- GEAR RATIO CODE: H (23/35)
- INPUT GEAR DESIGNATOR: AH
- LUBE OPTION: No Pressure Lube (X)
- SHIFT OPTION: Air Shift (A)
- ASSEMBLY ARRANGEMENT: 5
- OUTPUT OPTION: Greaseable SAE B 2 or 4-Bolt Flange, SAE B Shaft (7/8" 13T), Rotated 90 Degrees (GQ)
- INTERMITTENT TORQUE: 201-300 lb-ft (301-400 Nm); 250 lb-ft (339 Nm) typical - check application pages for actual rating
- CONTINUOUS TORQUE: De-rate intermittent torque rating by 30% - check application pages for actual rating
- OUTPUT POWER: 46-55 HP (31-40 kW)
- SHAFT POWER: 24 HP (18 kW) at 500 RPM; 48 HP (36 kW) at 1,000 RPM
- TRANSMISSION COMPATIBILITY: Eaton/Fuller, Volvo/Mack, Tremec, and other manual transmissions with 8-bolt PTO opening
Additional Information
The Chelsea 489 Series is designed for vocational and municipal equipment including utility trucks, dump trucks and trailers, snow and ice removal equipment, and fire and rescue vehicles. Twenty-seven output options are available across the series, including a 360-degree rotatable flange. Eleven internal speed ratios and shift configurations make the 489 Series adaptable across a broad range of manual transmission applications. The kit-style assembly design means replacement internal parts are straightforward to source and install, and those internal components are interchangeable with the Chelsea 442 Series.
