Hydraulic Driven
- XS439 pump end driven by your tractor or truck hydraulics
- SAE B fit or SAE C fit hydraulic motor spline
- Clockwise and counterclockwise rotation models
- Grooved or threaded FNPT ports, packing or mechanical seal
- No electric service, generator, or separate engine needed
- Send us your model number and we will confirm the right fit
Do you already own a tractor or skid steer with auxiliary hydraulics that could spin a Franklin Electric hydraulic driven centrifugal pump? If so, you can move water where no power line reaches, with no generator and no second engine to fuel. The pump end is the same heavy cast iron XS439 used on belt drive water trucks, and only the drive connection changes.
Before you order, you need four details from your equipment. The model number spells all four out.
Three Facts From Your Tractor or Truck, Plus a Seal
You need three facts from your equipment: the spline on your hydraulic motor (SAE B or SAE C), the direction the motor turns, and the port style your hoses use. Add your choice of packing or a mechanical seal, and those four choices point to exactly one of the 16 XS439 hydraulic model numbers.
Oil Flow Sets the Pump Speed
Your equipment's hydraulic pump pushes oil through a hydraulic motor connected to the pump. The motor turns the XS shaft, and the impeller moves the water.
If your tractor's auxiliary output has a flow control, you can adjust oil flow and control water output without extra hardware. Too little oil flow leaves the pump below its curve, and too much can overspeed the motor and pump.
Reading a Franklin Electric Hydraulic Driven Centrifugal Pump Model Number
Every model number spells out its build. Use this key to check a nameplate or confirm an order before it ships.
| Code | Meaning | Your options |
|---|---|---|
| XS439 | XS Series, 3x4-9 pump end (3-inch discharge, 4-inch suction, 9-inch impeller) | One size |
| HB or HC | Hydraulic drive with SAE B fit or SAE C fit spline | HB = 13 tooth, 16/32 pitch; HC = 14 tooth, 12/24 pitch |
| V or N | Port style | V = grooved; N = threaded FNPT |
| P or M | Seal type | P = packing; M = mechanical seal |
| CW or CCW | Rotation facing the shaft | Clockwise or counterclockwise |
For example, XS439-HCVM-CCW is a C fit, grooved, mechanical seal pump that turns counterclockwise. Both splines use a 30 degree pressure angle.
Built for Field Service, Miles From a Shop
- Back pullout volute: pull the pump end without unhooking suction or discharge hoses.
- Rotatable volute: aim the ports where your hoses run.
- Double keyed, enclosed cast iron impeller for startup torque from hydraulic motors.
- Heavy iron bearing frame with an oversized shaft and external grease fittings.
- Designed for horizontal mounting on a skid, frame, or truck.
Drafting From a Pond? Check These Pages Too
The XS hydraulic model is not self-priming. Fill the housing before the first start and use a foot valve if the pump sits above the water.
If you pull from ponds or pits and restart often, compare our hydraulic self-priming pumps first. If your truck runs the pump from a PTO or belt instead of hydraulics, the belt frame XS models on our frame mount centrifugal page share this same pump end.
Setting up a tanker for dust control? Our water truck pump guide covers drive choice from the truck builder's side.
Price Drivers
All 16 hydraulic models share one pump end, so the spread is narrow. Seal type and port style are the main differences, and we quote the exact model number you need.
Frequently Asked Questions
What is a hydraulic water pump?
A hydraulic water pump is a water pump turned by a hydraulic motor instead of an electric motor or engine. Oil from a tractor, skid steer, or truck hydraulic circuit spins the motor, and the motor spins the pump. The pump itself only ever touches water. On the Franklin XS439 hydraulic models, the motor connects through an SAE B or SAE C spline, and the pump end matches the belt drive XS water truck pump.
Can you run a hydraulic water pump off a skid steer?
Yes, you can run a hydraulic water pump off a skid steer if its auxiliary hydraulic circuit matches the pump's hydraulic motor. The XS Series hydraulic driven pump is built for tractors, skid steers, excavators, and trucks with auxiliary outputs. Check your machine's auxiliary oil flow against the motor's operating range, confirm B fit or C fit, and match rotation. Undersized oil flow will leave the pump short of its rated performance.
What happens when you increase the RPM of a centrifugal pump?
When you increase the RPM of a centrifugal pump, flow rises in step with speed, head rises with the square of speed, and the power needed rises with the cube. On a hydraulic driven XS pump, RPM follows the oil flow from your tractor or truck. Turning up oil flow moves more water at more pressure, but it also demands more hydraulic horsepower. Stay inside the rated speed of your hydraulic motor and pump.
Send us the model number from your current pump, or your motor spline, rotation, and port style, and we will quote the right XS hydraulic model.