Pilot pressure low or auxiliary circuit losing flow on your excavator? A worn CBTLYB-F412.5 gear pump loses internal clearance, allowing slip flow to grow until pilot or charge circuit demand cannot be met. RITO supplies this heavy-duty CBTLYB-series gear pump to restore rated pilot or auxiliary flow for reliable main valve and circuit control.
Item NO.:
CBTLYB-F412.5Order(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In StockCBTLYB-F412.5 / F404 Hydraulic Gear Pump for excavator pilot and auxiliary hydraulic circuits. The CBTLYB series is a robust Chinese-standard gear pump widely used for pilot, charge and auxiliary flow supply on a broad range of excavator and construction machinery applications. Precision gear set, tight housing clearances and a rated-pressure-tested body deliver consistent flow from engine idle to full speed.
| Part Number | CBTLYB-F412.5 / F404 |
|---|---|
| Part Name | Hydraulic Gear Pump |
| Compatible Brand | Other (CBTLYB Series) |
| Applicable Models | Excavator and construction machinery pilot / auxiliary circuit applications |
| Application | Pilot or auxiliary flow supply for excavator hydraulic control circuits |
| Material | Precision alloy steel gear set and pump housing |
| Product Color | Metallic finish |
| Working Temperature | -25°C~+80°C |
| Key Function | Generates pilot or auxiliary hydraulic flow for excavator control circuit operation |
| Condition | 100% New Aftermarket OEM Quality |
| Packaging | Wooden Case Reinforced Carton Neutral Packing Customized Box |
Gear-to-housing radial clearance maintained within specification to minimise internal slip and sustain rated pilot flow at low engine idle speed when control demand is highest.
Single pump type covers F412.5 and F404 displacement variants, providing flexibility for applications requiring slightly different pilot or charge flow rates.
CBTLYB-series port dimensions and SAE mounting pattern are common across many Chinese-manufactured excavator models, simplifying cross-machine spare parts management.
Each pump pressure-tested at rated working pressure before shipping to verify gear mesh, housing sealing and flow output meet specification.
FAQ
Q: How do I confirm a worn CBTLYB-F412.5 gear pump is the cause of low pilot pressure?
A: Measure pilot pump outlet pressure at idle engine speed. Below specification with normal hydraulic oil level confirms gear pump internal wear. Check the pilot relief valve setting before condemning the pump, as a mis-set relief can mimic gear pump failure symptoms.
Q: What is the displacement difference between CBTLYB-F412.5 and F404?
A: F412.5 and F404 designate the gear pump displacement in cm3/rev. F412.5 is the higher-displacement variant delivering more flow per revolution. Confirm which displacement your application requires by checking the existing pump model plate before ordering.
Q: Should I replace the pilot inline filter when fitting a new CBTLYB-F412.5?
A: Always replace the pilot circuit inline filter when fitting a new gear pump. Debris from the worn old pump circulates in the pilot circuit and will score the new gear set within operating hours if filters are not replaced.
Q: How to confirm CBTLYB-F412.5 / F404 fits my application?
A: Match the existing gear pump model CBTLYB-F412.5 or F404 on the pump body, and confirm port sizes and mounting bolt pattern. Provide the machine model and existing pump displacement for our team to cross-reference.
Q: What quality options are available?
A: We provide original, OEM and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies
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