Shijiazhuang Laiye Import& Export Trading Co., Ltd. is one of the leading manufacturers and suppliers of cbtl series — tandem gear pump in China, also supports customized service. If you're going to wholesale high quality cbtl series — tandem gear pump made in China, welcome to get pricelist from our factory.
Product Overview
The CBTL is a 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 headaches.
Each side works alone. One pump feeds one circuit. The other feeds another. They do not mix. If one section fails, the other keeps going. That matters when downtime is expensive.
The housing is high-strength aluminum. Light but tough. Inside, you get axial compensation, radial balance, and DU bearings. The result is efficiency that stays high over time.
The CBTL Series - Tandem Gear Pump delivers two reliable flows from one compact package.
What Makes It Different
Two pumps in one housing. Saves space under the hood. Saves time on installation. One drive shaft does the work of two separate pumps - fewer mounting points, fewer connections to leak.
The sections are independent. They don't share oil. They don't share pressure. If one pump fails, the other keeps running. No cross-contamination. No downtime on both circuits at once.
The housing is aluminum. Lighter than cast iron, easier to handle, easier to mount. On mobile equipment that moves all day, shaving off a few kilos makes a real difference.
Inside, the design keeps things efficient. Axial compensation adjusts clearances as parts wear - efficiency stays consistent over the pump's life instead of declining after a few thousand hours. Radial balance reduces load on the bearings, so they last longer. DU self-lubricating bearings cut friction and reduce heat.
You'll find this pump on forklifts, loaders, excavators, cranes - anywhere you need two independent hydraulic circuits in one compact package.
Specifications
| Model Combination (Fore/Rear) | Displacement (mL/r) | Rated Pressure (MPa) | Max Pressure (MPa) | Rated Speed (r/min) | Max Speed (r/min) | Vol. Efficiency (%) | L1 (mm) | L2 (mm) | L (mm) | Weight (Kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| CBTL-F410/F410 | 10 / 10 | 20 | 25 | 2500 | 3000 | 92 | 57 | 166 | 225.5 | 5.5 |
| CBTL-F416/F410 | 16 / 10 | 20 | 25 | 2500 | 3000 | 92 | 60.3 | 172.5 | 233 | 5.8 |
| CBTL-F416/F416 | 16 / 16 | 20 | 25 | 2500 | 3000 | 92 | 60.3 | 175.8 | 239.5 | 6.1 |
| CBTL-F420/F410 | 20 / 10 | 20 | 25 | 2500 | 3000 | 92 | 62.5 | 177 | 237.5 | 6.0 |
| CBTL-F420/F416 | 20 / 16 | 20 | 25 | 2500 | 3000 | 92 | 62.5 | 180.3 | 244 | 6.3 |
| CBTL-F420/F420 | 20 / 20 | 16 | 20 | 2500 | 3000 | 92 | 62.5 | 182.5 | 248.5 | 6.5 |
| CBTL-F425/F410 | 25 / 10 | 20 | 25 | 2500 | 3000 | 92 | 65.5 | 175.3 | 244 | 6.3 |
| CBTL-F425/F416 | 25 / 16 | 20 | 25 | 2500 | 3000 | 92 | 65.5 | 183.6 | 250.5 | 6.5 |
| CBTL-F425/F420 | 25 / 20 | 16 | 20 | 2500 | 3000 | 92 | 65.5 | 188.6 | 255 | 6.7 |
| CBTL-F430/F410 | 30 / 10 | 16 | 20 | 2500 | 3000 | 92 | 67.8 | 187.6 | 248 | 6.5 |
| CBTL-F430/F416 | 30 / 16 | 16 | 20 | 2500 | 3000 | 92 | 67.8 | 193 | 254.5 | 6.7 |
Where You Use These Pumps
Forklifts. Lift and steer. Two jobs, one pump.
Loaders. Bucket and arms. Separate circuits.
Cranes. Hoist and slew. Independent flows.
Road rollers. Vibration and travel. Two functions.
Mining gear. Two circuits. One pump.
Farm equipment. Two jobs from one drive.
Two circuits. One pump. The CBTL Series - 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. Good machining means good performance.
Gear grinding
Gear teeth are ground to final size. Surface finish and clearances are checked carefully. Efficiency starts here. Too tight, the pump binds. Too loose, efficiency drops.
Bearing installation
DU self-lubricating bearings are pressed in. The axial compensation mechanism is assembled. Radial balance components are fitted. Everything must move freely but precisely.
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. No exceptions.
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: What is the difference between the CBTL and a single gear pump?
A: A single gear pump provides one flow. The CBTL provides two independent flows from one drive shaft. It is two pumps in one housing. You get two circuits without two pumps.
Q: What is the advantage of a tandem pump over two separate pumps?
A: Saves space. Saves cost. One drive shaft instead of two. Simpler installation. Fewer couplings and brackets. One unit does the work of two.
Q: What happens if one section fails?
A: The other section keeps running. Each section is independent. They do not share oil or pressure.
Q: What materials are used in the CBTL?
A: High-strength aluminum alloy housing. DU self-lubricating bearings. Hardened steel gears. Lightweight but durable.
Q: What applications is the CBTL suitable for?
A: Forklifts, loaders, excavators, cranes, road rollers, mining equipment, agricultural machinery. Any machine that needs two independent hydraulic circuits.
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