The Chelsea 489 Series Power Take-Off Assembly, part number 489GQAHX-A3XQ or 489GQAHXA3XQ, mounts directly to an 8-bolt transmission opening on compatible manual transmissions including Eaton/Fuller, Volvo/Mack, and Tremec applications. The one-piece cast iron housing eliminates the adapter plate found on earlier designs, reducing both installation time and potential leak paths. Output is an SAE B 2 or 4-bolt flange with a 7/8" 13-tooth SAE B shaft, and shift actuation is air shift. Intermittent torque capacity for the 489 Series is 250 lb-ft (339 Nm); shaft power is 24 HP at 500 RPM and 48 HP at 1,000 RPM. Tapered output bearings handle radial loads that needle-bearing designs cannot. Sold by Pro Gear and Transmission. Call us to confirm proper fit for your transmission and application.
Features
8-Bolt direct-mount one-piece cast iron housing - no adapter plate required, fewer potential leak paths
Air shift actuation
SAE B 2 or 4-bolt flange with a 7/8" 13-tooth SAE B shaft, rotated 90 degrees
Intermittent torque: 250 lb-ft (339 Nm); shaft power 24 HP at 500 RPM, 48 HP at 1,000 RPM
Strong tapered bearings in place of needle bearings for improved radial load capacity
Kit-style design with internal parts common to the Chelsea 442 Series for straightforward servicing
Tech Specs
- Product Series: 489
- Mounting Type: 8-Bolt (direct-mount, no adapter plate)
- Mounting Option: Standard Mount with Metric Studs (G)
- Gear Ratio Code: Q (19/24)
- Input Gear Designator: AH
- Lube Option: No Pressure Lube (X)
- Shift Option: Air Shift (A)
- Assembly Arrangement: 3
- Output Option: SAE B 2 or 4-Bolt Flange, SAE B Shaft (7/8" 13T), Rotated 90 Degrees (XQ)
- Intermittent Torque: 250 lb-ft / 339 Nm (check application pages for actual torque ratings)
- Continuous Torque: De-rate intermittent rating by 30% (check application pages for actual torque ratings)
- Output Power: 46-55 HP / 31-40 kW
- Shaft Power: 24 HP (500 RPM), 48 HP (1,000 RPM) / 18 kW (500 RPM), 36 kW (1,000 RPM)
- Transmission Compatibility: Eaton/Fuller, Volvo/Mack, and other manual transmissions with 8-bolt PTO aperture
Additional Information
