Shijiazhuang Laiye Import& Export Trading Co., Ltd. is one of the leading manufacturers and suppliers of cbnl-e3/e3 series — aluminum tandem gear pump in China, also supports customized service. If you're going to wholesale high quality cbnl-e3/e3 series — aluminum tandem gear pump made in China, welcome to get pricelist from our factory.
Product Overview
The CBNL-E3/E3 is an aluminum tandem gear pump. Two pumps, one housing. Two separate flows from a single drive shaft.
Why buy two pumps when one will do? Space. Cost. Simplicity. You get two circuits without two pumps. No extra couplings. No extra brackets. No extra drive connections. Just one compact unit that does the work of two.
Each side works alone. One pump feeds one circuit. The other feeds another. They do not mix. They do not interfere. If one section fails, the other keeps running-a practical advantage for critical equipment where downtime is expensive.
The housing is high-strength aluminum. Light but tough. Resists corrosion. Handles the vibration and shock of mobile equipment.
Inside, axial clearance compensation, radial balance, and DU self-lubricating bearings work together. The result? Efficiency stays high over the pump's service life. No gradual decline in performance as parts wear. It compensates automatically.
The CBNL-E3/E3 Series - Aluminum Tandem Gear Pump delivers two reliable flows from one compact package.
What Makes It Different
The CBNL-E3/E3 is built for machines that need two independent hydraulic circuits without the complexity of two separate pumps.
Two pumps, one housing. One drive shaft powers both sections. Saves space. Saves installation time. Fewer connections. Fewer leak points.
Independent sections. Each section has its own inlet and outlet. They do not share oil or pressure. One fails, the other keeps running. Simple and practical.
Aluminum housing. Lighter than cast iron. Easier to handle and mount. Good for mobile equipment where weight matters.
Axial compensation. Clearances adjust as parts wear. Efficiency stays high over the pump's life. No gradual loss of performance.
Radial balance. Less stress on bearings. They last longer. Fewer replacements. Lower maintenance costs.
DU bearings. Self-lubricating. Less friction. Less heat. Longer service life.
Quiet. Runs smoother than many pumps. Good for noise-sensitive work sites and enclosed cabs.
Versatile. Forklifts, loaders, excavators, cranes-wherever you need two independent circuits from one pump.
Specifications
| Parameter | Value |
|---|---|
| Series | CBNL-E3/E3 |
| Displacement range | 10 - 40 cc/rev per section |
| Rated pressure | 16 - 20 MPa |
| Material | High-strength aluminum alloy |
Model Configurations
| Model | Displacements (mL/r) | Rated Pressure (MPa) |
|---|---|---|
| CBNL-E3-10/E3-10 | 10 / 10 | 16 |
| CBNL-E3-16/E3-10 | 16 / 10 | 16 |
| CBNL-E3-16/E3-16 | 16 / 16 | 16 |
| CBNL-E3-20/E3-10 | 20 / 10 | 16 |
| CBNL-E3-20/E3-16 | 20 / 16 | 16 |
| CBNL-E3-20/E3-20 | 20 / 20 | 16 |
| CBNL-F3-10/F3-10 | 10 / 10 | 20 |
| CBNL-F3-16/F3-10 | 16 / 10 | 20 |
| CBNL-F3-16/F3-16 | 16 / 16 | 20 |
| CBNL-F3-20/F3-10 | 20 / 10 | 20 |
| CBNL-F3-20/F3-16 | 20 / 16 | 20 |
| CBNL-F3-20/F3-20 | 20 / 20 | 20 |
| CBNL-F3-25/F3-10 | 25 / 10 | 20 |
| CBNL-F3-25/F3-16 | 25 / 16 | 20 |
| CBNL-F3-25/F3-20 | 25 / 20 | 20 |
| CBNL-F3-32/F3-10 | 32 / 10 | 20 |
| CBNL-F3-32/F3-16 | 32 / 16 | 20 |
| CBNL-F3-32/F3-20 | 32 / 20 | 20 |
| CBNL-F3-40/F3-10 | 40 / 10 | 20 |
| CBNL-F3-40/F3-16 | 40 / 16 | 20 |
| CBNL-F3-40/F3-20 | 40 / 20 | 20 |
For complete performance data and dimensional information, consult the CBNL-E3/E3 - Aluminum Tandem Gear Pump specifications above.
Where You Use These Pumps
The CBNL-E3/E3 Series - Aluminum Tandem Gear Pump is used wherever a machine needs two independent hydraulic functions from a single power source.
Forklifts. One pump for lifting. One for steering. Two jobs, one pump. Simple and efficient.
Loaders. Bucket and arms run on separate circuits. Independent control. Better machine response.
Cranes. Hoist and slew functions. Each gets its own flow. No interference between movements.
Road rollers. Vibration and travel. Separate circuits, one pump. Reliable operation.
Mining gear. Two circuits. One pump. Less equipment to maintain.
Farm equipment. Two jobs from one drive. Saves space on the machine.
Two circuits. One pump. The CBNL-E3/E3 - Aluminum Tandem Gear Pump makes it simple.
How We Build These Pumps
Casting
Aluminum castings arrive at our shop. We inspect each one for porosity and dimensional accuracy. Defective castings are rejected before they hit the machining line.
Machining
Housings go through precision machining. Gear bores are bored to exact size. Ports are drilled. Mounting faces are machined flat. Every surface is held to tight tolerances.
Gear grinding
Gear teeth are ground to final size. Surface finish and clearances are checked carefully. Efficiency starts here.
Bearing installation
DU self-lubricating bearings are pressed in. The axial compensation mechanism is assembled. Radial balance components are fitted.
Assembly
Two complete gear sets go into the housing. Shafts are fitted. End covers and seals are installed. Fasteners are torqued to spec. Each bolt is checked.
Testing
Every pump goes on the test stand. Both sections are tested-not one, both. Flow and pressure are verified. Efficiency is measured. If it does not pass, it does not ship.
Packing
Small orders go into cartons with foam inserts. Bulk orders go into plywood cases. Test reports are included when requested.
Shipping
Sea, air, rail, truck, or express. Worldwide delivery. Tracking numbers provided for every shipment.
FAQ
Q: Can I run the two sections at different pressures?
A: Yes. Each section has its own outlet and can operate at different pressures. The sections are independent. Pressure in one section does not affect the other.
Q: Does the pump need a case drain?
A: Not usually. The CBNL-E3/E3 is designed for standard operation without a case drain. If your system has high backpressure, consult us.
Q: How long does the pump typically last?
A: Depends on oil cleanliness and operating conditions. With clean oil and proper maintenance, the pump runs for many years. Contamination is the main cause of premature wear.
Q: Can I mount the pump in any orientation?
A: Yes. The CBNL-E3/E3 works in any orientation. Mount it horizontally, vertically, or upside down. The pump does not care.
Q: What if the pump is noisy during operation?
A: Check for cavitation. The flow may be too high for the inlet line. Check for air in the system. Check the oil viscosity. If noise continues, contact us.
Q: Can I use the CBNL-E3/E3 in a closed-center hydraulic system?
A: Yes. The pump works with both open-center and closed-center systems. The pump does not care about the valve configuration.
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