The Chelsea 281GDFJP-B5RK is a 281 Series hydraulically shifted PowerShift PTO configured for applicable Allison automatic transmissions. This assembly combines a standard 10-bolt mount with metric studs, pressure lubrication, 12V electro-hydraulic shifting and a rotatable SAE B pump mount.
Key Features
- Chelsea 281 Series PowerShift PTO
- Standard SAE 10-bolt transmission mount
- Metric mounting studs
- FJ input configuration for applicable Allison transmissions
- 28/44 internal gear set
- 12V electro-hydraulic hot-shift operation
- Pressure-lubricated configuration
- Arrangement 5 housing orientation
- Rotatable SAE B two- or four-bolt pump flange
- 7/8-inch, 13-tooth SAE B output shaft
- Designed for continuous-duty hydraulic applications
Product Specifications
| Manufacturer |
Parker Chelsea |
| Manufacturer part number |
281GDFJP-B5RK |
| Series |
281 |
| Product type |
PowerShift power take-off |
| Mounting interface |
SAE 10-bolt |
| Mounting configuration |
Standard mount with metric studs |
| Gear set |
28/44 |
| Input gear designator |
FJ |
| Transmission family |
Applicable Allison installations |
| Shift type |
12V electro-hydraulic |
| Lubrication |
Pressure lubricated |
| Assembly arrangement |
5 |
| Pump mount |
Rotatable SAE B, two- or four-bolt |
| Output shaft |
7/8-inch, 13-tooth SAE B spline |
| Store SKU |
0011966 |
Model Number Breakdown
| Code |
Meaning |
| 281 |
Chelsea 281 Series |
| G |
Standard 10-bolt mount with metric studs |
| D |
28/44 gear set for Arrangement 5 |
| FJ |
Allison input gear designator |
| P |
Pressure lubrication |
| B |
12V electro-hydraulic shift |
| 5 |
Gear forward and shaft rear; right-side bulge up and left-side bulge down |
| RK |
Rotatable SAE B two- or four-bolt flange with 7/8-inch, 13-tooth shaft |
Performance Ratings
| Rating |
Parker Specification |
| Continuous torque |
390 lb-ft / 529 Nm |
| Continuous power at 500 output RPM |
37 hp / 28 kW |
| Continuous power at 1,000 output RPM |
74 hp / 55 kW |
| Approximate series weight |
50 lb / 22.7 kg |
Common Applications
| Application |
Typical PTO Function |
| Water trucks |
Driving the water-pump hydraulic system |
| Dump trucks |
Supplying hydraulic power to the hoist |
| Service trucks |
Operating auxiliary hydraulic equipment |
| Municipal equipment |
Powering continuous-duty hydraulic accessories |
| Other vocational trucks |
Direct mounting of a compatible SAE B hydraulic pump |
Fitment Note
PTO compatibility depends on the exact Allison transmission model, PTO opening, input gear, desired output speed and pump requirements. Confirm 281GDFJP-B5RK against the vehicle and driven-equipment specifications before ordering.