The Muncie PL11902BSBB hydraulic gear pump/motor is a bi-rotational PL-series unit with a nominal pump output of 19 GPM at 1,000 RPM. Its SAE B mounting flange and 7/8-inch, 13-tooth splined shaft suit matching drive arrangements, while side and rear ports give you options for routing hydraulic lines.
Use this unit for hydraulic pump service or a properly matched high-speed, low-torque motor application. Select it by the complete part number, drive connection, and system requirements. The 19 GPM designation is tied to shaft speed; it is not a constant output at every operating speed.
Flexible plumbing and bi-rotational operation
Four-port construction helps you route hoses around surrounding equipment. Cast-iron construction, roller bearings, and a solid one-piece shaft support demanding hydraulic service. This configuration has no built-in pressure relief valve, so pressure protection must be provided by the hydraulic system.
| Feature |
Practical benefit |
| Side and rear connections |
Choose the port locations that suit available hose clearance. |
| Bi-rotational design |
Accommodates either rotation direction with the correct hydraulic connections. |
| SAE B splined drive |
Connects to a matching 7/8-inch, 13-tooth drive. |
Technical specifications
| Specification |
Details |
| Manufacturer / part number |
Muncie Power Products / PL11902BSBB |
| Series / design |
PL / 1 |
| Nominal pump flow |
19 GPM at 1,000 RPM |
| Displacement |
4.46 cu. in. per revolution (73 cc) |
| Mount / shaft |
SAE B direct mount; 7/8-inch, 13-tooth spline |
| Porting |
SAE straight-thread O-ring boss; side and rear |
| Side / rear port size |
1-1/4 inch / 1-1/4 inch |
| Rotation |
Bi-rotational |
| Construction |
Cast iron with roller bearings |
| Speed range |
600–3,000 RPM |
| Maximum pressure |
3,000 PSI |
| Maximum inlet vacuum |
5 in. Hg |
| Maximum inlet back pressure |
150 PSI |
| Integral pressure relief |
None |
Match the unit to your hydraulic system
A matching flange alone does not establish a complete fit. Check the shaft engagement, available space, hydraulic connections, and operating requirements together before replacing an existing pump or motor.
| System component |
Selection requirement |
| PTO or other drive |
Match the SAE B flange, splined connection, speed, and drive capacity. |
| Hydraulic plumbing |
Use compatible SAE straight-thread fittings and suitable hose routing. |
| Pressure protection |
Provide system relief protection appropriate for the pump and connected components. |
| Motor application |
Confirm required speed, torque, and circuit arrangement before ordering. |
Before ordering
| Check |
What to confirm |
| Existing unit |
Compare the full PL11902BSBB part number and shaft configuration. |
| Mounting |
Verify the bolt pattern, pilot, shaft engagement, and installation clearance. |
| Performance |
Match required flow and pressure at your actual operating speed. |
| Fluid supply |
Check inlet conditions and select hydraulic oil suitable for operating and startup temperatures. |
| Installation components |
Confirm the fittings, hoses, mounting hardware, and pressure protection required for your installation. |
Need help confirming compatibility? Contact UnitedBuilt through online chat, email parts@unitedbuilt.com, or call 602-253-7750 with your application, drive arrangement, and required flow and pressure.
