CBF Series Forklift Hydraulic Gear Pump | CBF-E10ALPL E25P E32P

The CBF and CBF-E series (encompassing a comprehensive, heavy-duty displacement spectrum including CBF-E10ALPL, CBF-E16P, CBF-E18P, CBF-E25P, CBF-E32P, CBF-E40P, CBF-E63P, and CBF-E80P) manufactured by LIC Hydraulic are industrial-grade high-pressure hydraulic gear pumps. They are engineered as the primary fluid power source for counterbalance forklift trucks, compact wheel loaders, and heavy-duty material handling machinery. Conforming exactly to standard rectangular and diamond mounting pilot configurations, standard SAE/involute splined and parallel keyed input drive shafts, and multiple porting arrays (such as side-inlet/side-outlet or rear-inlet/front-outlet configurations), this entire product line provides 100% drop-in interchangeability with original CBF series high-pressure gear pumps fitted on leading global forklift brands (including HELI, HANGCHA, Lonking, LiuGong, and other prominent material handling equipment).

During demanding warehouse and yard logistics, a forklift’s primary hydraulic pump is subject to continuous high-frequency flow reversal, instant peak pressure spikes during full-capacity mast hoisting, and airborne debris or high-temperature environments. Standard commercial gear pumps frequently suffer substantial volumetric efficiency losses under these conditions because excessive friction between the gear faces and wear plates enlarges internal clearances, leading to sluggish lift controls. LIC resolves these typical engineering challenges by integrating a high-tensile die-cast aluminum/cast iron composite housing, high-capacity DU composite bushings, and hydrostatically balanced floating side wear plates. Every single forklift gear pump undergoes 100% full-load factory testing that simulates intensive mast lifting, hydraulic tilt resistance, and control valve steering bypass sequences prior to distribution. This ensures stable volumetric reliability ($>95\%$) and a quiet noise signature under constant 20 MPa operations.

Technical Specifications

Engineering specifications derived from standard 1-to-10 ton forklift main hydraulic system CBF series configurations:

• Product Series: CBF / CBF-E Series Heavy-Duty High-Pressure Forklift Hydraulic Gear Pump Platform

• Model Number Specification Code Breakdown (e.g., CBF-E10ALPL & General Extensions):

  • CBF: High-pressure engineering machinery external gear pump design family identifier.

  • -E: Pressure rating designation index, standardizing continuous operations up to 20 MPa (200 bar).

  • 10 / 16 / 25 / 32 / 40: Nominal geometric displacement indicator (mL/r), e.g., 10 defines 10 mL/r, while 32 specifies 32 mL/r.

  • A: Housing material profile indicator (High-tensile premium die-cast aluminum alloy chassis).

  • L / R: Rotational direction index; L designates left-hand (Counter-clockwise viewed from shaft end), R designates right-hand (Clockwise).

  • P: Main fluid port configuration code (Typically standard SAE split-flange or specialized forklift square flange connections).

  • L (Trailing): Application modification index, defining optimized front-merging pathways or specific auxiliary ports designed for combination flow-divider valves.

• Total Matrix Displacement Coverage Framework:

  • CBF-E10: 10 mL/r

  • CBF-E16 / E18: 16 mL/r / 18 mL/r (Standard configuration for 1-2 ton forklift capacities)

  • CBF-E25 / E32: 25 mL/r / 32 mL/r (Standard configuration for 3-3.5 ton forklift main lifting circuits)

  • CBF-E40 / E50: 40 mL/r / 50 mL/r (Standard configuration for 4-5 ton forklift main lifting circuits)

  • CBF-E63 / E80: 63 mL/r / 80 mL/r (Standard configuration for 5-10 ton heavy-capacity material handling lines)

• Standardized Pressure Threshold Ratings:

  • Continuous Rated Pressure: 20 MPa (200 bar / 2900 psi)

  • Intermittent Peak Pressure Limit: 25 MPa (250 bar / 3625 psi)

• Allowable Operational Rotational Speed Range: 600 rpm – 3000 rpm

• Total Calculated Operating Efficiency: Volumetric Efficiency $\ge 95\%$; Mechanical Efficiency $\ge 93\%$.

• Input Shaft Configuration Options: Standard SAE involute splines (e.g., 13-tooth / 14-tooth arrays) or rectangular parallel keys (designed for direct transmission PTO gear coupling or engine pulley belt drives).

Key Technical Advantages

• High-Load DU Bushings & Specialized Wear Plates: The internal drive gears are supported by DU composite journal bushings that offer a low coefficient of friction. Paired with micro-ground floating side wear plates, this configuration minimizes internal friction and prevents localized thermal scratching on gear faces during extended periods of high-temperature operation.

• Hydrostatically Balanced Axial Clearance Compensation: The floating wear plates feature pressure-energized sealing channels on their rear surfaces that utilize high-pressure fluid from the outlet. As lifting loads increase, this pressure presses the plates firmly against the gear faces, keeping internal clearances tight and maintaining high volumetric efficiency at 20 MPa.

• Precision-Machined Involute Gear Profiles with Trapped-Oil Relief: The gear teeth are precision hobbed and case-hardened from high-strength alloy steel. Designed with integrated relief grooves, they minimize the fluid trapping that typically occurs during gear meshing. This significantly lowers flow pulsation and helps reduce fluid-borne noise throughout the forklift cabin and mast structure.

• High-Tensile Lightweight Aluminum Chassis: The pump housing uses a high-density, die-cast aluminum alloy shell (or heavy ductile iron for large displacements like E63/E80) that delivers robust tensile structural integrity with minimal mass. This lightweight casing withstands heavy mechanical vibrations and high fatigue stress within compact engine compartments.

Application Areas

The CBF-E series high-pressure gear pumps serve as core fluid components for an array of material handling and industrial lifting equipment:

• Internal Combustion Counterbalance Forklifts: Serving as the primary lift-and-tilt pump on 1-to-10 ton diesel, gasoline, or LPG trucks, while simultaneously routing fluid power to full-hydraulic steering control units via priority flow-dividers.

• Heavy-Duty Electric Battery Forklifts: Integrated as a high-efficiency pump-motor unit for larger electric forklifts, working alongside variable-frequency AC motors for precise hoisting control.

• Compact Wheel Loaders & Skid-Steer Attachments: Providing secondary hydraulic power for auxiliary attachments such as bale clamps, sideshifters, or rotators.

• Aerial Work Platforms & Hydraulic Tail Lifts: Delivering reliable, high-pressure fluid delivery for warehouse order pickers, scissor lifts, and commercial truck tailgate lift cylinders.

Expert Maintenance Tips

• Avoid Axial Impact Loads on the Input Shaft During Assembly: When mounting the CBF-E10ALPL or larger gear pumps onto an engine’s transmission PTO gear drive, never use a hammer or heavy impact tool to force the coupling or drive gear onto the pump shaft. Heavy impacts can misalign the internal floating wear plates against the gear faces, which can lead to localized seizure upon initial startup. Use an appropriate press tool and ensure the shaft retains a microscopic amount of axial play.

• Perform a Thorough Low-Pressure Air Purge Before Applying Loads: After replacing a pump and reconnecting the hydraulic plumbing, do not immediately raise the forklift mast to its highest point or cycle the cylinders under full capacity. Run the engine at idle and perform multiple short, unladen lift and tilt cycles to allow any trapped air to vent back into the reservoir. Applying full load with air in the lines can cause cavitation, which can erode the case-hardened gear surfaces within seconds.

• Regularly Calibrate the Multi-Way Control Valve’s Relief Pressure Setting: Forklift hydraulic loops rely heavily on the main relief valve built into the multi-way control block. If operators increase the relief valve setting beyond the pump’s 25 MPa maximum intermittent pressure limit to boost lifting capacity, it can cause body distortion (“pump swelling”) or shaft fracture. Use a reliable pressure gauge to verify and calibrate the relief settings quarterly.