The Chelsea 489 Series Power Take-Off, part number 489GRAHX-T5SQ or 489GRAHXT5SQ, is a wire/cable mechanical-shift PTO designed for manual transmissions with an 8-bolt mounting aperture, including Eaton Fuller, Mack, and Tremec. The integral 8-bolt cast iron housing bolts directly to the transmission opening without requiring an adapter plate, eliminating an extra potential leak path. The 489 Series carries an intermittent torque rating of 201-300 lb-ft and delivers up to 48 HP at 1,000 RPM through a 1-1/4" round keyed output shaft. Tapered bearings replace needle bearings for greater load-bearing capability. Available from Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
8-bolt integral cast iron housing mounts directly to transmission, no adapter plate required
Wire/cable mechanical shift operation
Intermittent torque rating: 201-300 lb-ft (301-400 Nm)
Output: up to 48 HP at 1,000 RPM (36 kW)
1-1/4" round keyed output shaft
Tapered bearings for increased load-bearing capacity over needle-bearing designs
Internal parts common to the Chelsea 442 Series
Tech Specs
- Mounting Type: 8-Bolt
- Shift Type: Wire/Cable, Mechanical
- Intermittent Torque: 201-300 lb-ft (301-400 Nm)
- Output Shaft Type: 1-1/4" Round Shaft with Key
- Shaft Power: 24 HP at 500 RPM, 48 HP at 1,000 RPM (18 kW at 500 RPM, 36 kW at 1,000 RPM)
- Output Power: 46-55 HP (31-40 kW)
- Product Series: 489
- Compatible Transmissions: Eaton Fuller, Mack, Tremec (8-bolt aperture manual transmissions)
- Dimensions (H x W x L): 8 in. x 10 in. x 14 in.
Additional Information
The Chelsea 489 Series PTO is suited for utility trucks, dump truck and trailer applications, snow and ice removal equipment, and fire and rescue vehicles. The one-piece cast iron housing provides the same torque capacity as the Chelsea 442 Series at 250 lb-ft while simplifying installation. The kit-style design makes field servicing straightforward, and internal components are shared with the 442 Series, broadening parts availability. Twenty-seven output options are available across the 489 Series, including Chelsea's 360-degree rotatable flange with a greaseable shaft to reduce pump shaft spline fretting and corrosion. For detailed parts and service information, refer to the 489 Series Parts List (HY25-2442-M1_US) and the Chelsea Service Manual (HY25-6489-M1/US) available from Parker.Parts Manual: Chelsea 489 Series PTO Parts Manual (PDF) — exploded views, item numbers and the full parts breakdown for this series.
