Shijiazhuang Laiye Import& Export Trading Co., Ltd. is one of the leading manufacturers and suppliers of cbt-f4 series single gear pump in China, also supports customized service. If you're going to wholesale high quality cbt-f4 series single gear pump made in China, welcome to get pricelist from our factory.
Production Introduction
Some pumps are designed to run off an electric motor. They sit next to the motor, bolted to a baseplate, and they run all day in a clean factory.
The CBT-F4 is not that pump.
It's engine-driven. It bolts directly to the engine PTO - no electric motor, no power cord, no factory wall plug. The CBT-F4 series single gear pump is the pump for mobile equipment: construction machines, agricultural machinery, forestry equipment. It delivers the flow that heavy equipment demands.
Inside, two gears spin in opposite directions. Simple, proven design. Cast iron housing, alloy steel gears. Built for the vibration, dust, and temperature swings that kill lesser pumps.
Multiple CBT pumps can be bolted together - one F4 for steering, one F2 for implements - all driven by one engine PTO.
How a gear pump works - short version
Two gears. One is driven by the engine. The other spins with it. As they rotate, they draw oil in and push it out.
Inlet: Gears unmesh, create vacuum, oil gets pulled in.
Transport: Oil rides in the spaces between teeth and housing.
Outlet: Gears mesh, trap the oil, force it out under pressure.
Simple. No valves, no pistons, no complex internal passages. Fewer things to break. This is why gear pumps are used in heavy equipment. They're not the most efficient pump type, but they're reliable. And in the field, reliability matters more than efficiency.
Product description
Key features
Engine-driven - runs directly off engine PTO, no external power supply needed
Heavy-duty construction - cast iron housing, high-strength alloy steel gears
Strong self-priming capability
Low noise
Good viscosity adaptability
Flexible configuration - single pump or multi-pump bank
Installation notes
Port connections. Inlet and outlet cannot be reversed. Check markings before connecting.
Coupling alignment. Misalignment causes premature wear. Align it before you bolt it up.
First start. Lubricate the housing with oil before starting. Dry running is the fastest way to destroy a new pump.
Mounting bolts. Torque to spec. Uneven torque distorts the housing and causes internal leakage.
Suction line. Must be sealed tight. Air leaks cause cavitation - the pump runs noisy, flow drops, damage follows.
Start-up. Do not start under pressure. Unload the system first. Load only after the pump is running.
Where it belongs
The CBT-F4 series single gear pump is used in heavy equipment that needs high-volume hydraulic flow:
Construction equipment - vibratory rollers, asphalt pavers, material transfer vehicles
Agricultural machinery - large tractors, combine harvesters, forage harvesters
Forestry equipment - skidders, harvesters
High-flow systems - fan drives, winches, conveyor systems
Multi-pump assemblies - bolted together with other CBT pumps
About the company
Shijiazhuang Laiye Import & Export Trading Co., Ltd., part of Hebei Onederful® Hydraulic Technology Co., Ltd., has been making hydraulic components since 1988 - over 35 years.
We're a factory, not a trading company. Around 200 employees. Full in-house production: casting, machining, assembly, testing, phosphating.
Products go to Russia, Europe, the Middle East, South America, and Asia. ISO 9001 certified. Every pump is tested individually, with data linked to its serial number.
Packaging and transportation
Factory workshop
Exhibition
FAQ
Q: What type of pump is the CBT-F4? What are its main features?
A: The CBT-F4 is a heavy-duty, engine-driven external gear pump designed for hydraulic systems requiring high flow rates and high reliability. Its core features are simple structure, robustness, and durability. It typically uses a cast iron housing and high-strength alloy steel gears, enabling long-term stable operation under medium pressure conditions.
Q: Can the CBT-F4 be started under pressure?
A: Starting under pressure is not recommended. The system should be unloaded before starting, and loading should only begin after the pump is running smoothly. Starting under pressure will increase the starting torque, potentially damaging the coupling or accelerating wear on internal pump parts.
Q: What could be causing large fluctuations in the output pressure of the CBT-F4?
A: Common causes include: air entering the suction line, fatigue of the safety valve spring or sticking of the valve core, and uneven gear wear. First, check the oil level and line seals, then check the condition of the safety valve.
Q: Why is my CBT-F4 engine failing to draw oil or having insufficient flow?
A: Common causes include: clogged suction line, low oil level, excessively high oil viscosity, or poor suction line seal leading to air intake. Check the suction port filter for blockages, confirm the oil level in the tank, and warm up the engine at low pressure and speed during winter startup.
Q: What precautions should be taken during installation?
A: The inlet and outlet ports must not be reversed.
Check the coupling alignment before installation.
Lubricate the pump housing with oil before the first start-up.
Tighten the mounting bolts to the specified torque.
Ensure the suction line is well-sealed to prevent cavitation.
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