Kubota PHV-1B-12B final drive for Kubota KX36-3 K008-3 KX41-2 KX41-2V KX41-3 mini excavator
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Before you decide to make a purchase, carefully review several sales offers to understand the average cost of your chosen equipment. If the price of the offer you like is much lower than similar offers, think about it. A significant price difference may indicate hidden defects or an attempt by the seller to commit fraudulent acts.
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The most common type of fraud. Unfair sellers may request a certain amount of advance payment to “book” your right to purchase equipment. Thus, fraudsters can collect a large amount and disappear, no longer get in touch.
- Transfer of prepayment to the card
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- Transfer to the “Trustee” account
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- Transfer to a company account with a similar name
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- Substitution of own details in the invoice of a real company
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Seller's contacts
+86 199 246...
+86 199 2461 6345
China
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China
China
China
China
Romania
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Poland, Koziegłowy
Romania
Romania
1. GENERAL IDENTIFICATION
Machine Models: * K-Series: K008-3 (Micro)
KX-Series: KX36-3, KX41-2, KX41-2V, KX41-3
OEM Manufacturer: Nachi-Fujikoshi (Japan)
OEM Model Series: PHV-1B-12B
Kubota Genuine Part Numbers (Cross-Reference):
RG101-61290 / RG038-61290: (Standard for KX41-2 / KX36-3)
RG108-61290 / RG108-61270 / RG108-72000: (Standard for KX41-3 series)
RB208-61290 / RB238-61292: (Common for K008-3 / U15 series)
RA251-61291 / RA251-61292: (Updated versions for enhanced sealing)
2. PERFORMANCE SPECIFICATIONS
Motor Type: Two-speed Variable Displacement Axial Piston Motor.
Reduction Type: 2-Stage Integrated Planetary Gearbox.
Max Operating Pressure: 21.0 MPa (3,045 PSI).
High/Low Displacement: Specifically valved for machines under 1,800 kg.
Braking: Spring-applied, hydraulic-release mechanical parking brake.
3. MECHANICAL INTERFACE (INSTALLATION DATA)
Sprocket Mounting: Typically a 9-bolt pattern for these compact models.
Frame Mounting: Circular flange. Note: On the KX41-2V (Variable track), ensure the hydraulic hose clearance matches the telescopic frame.
Hydraulic Port Connections:
Inlet/Outlet (Main): Forward and Reverse flow.
Pilot (Change): Port for shifting between low and high speed.
Case Drain (Tank): Low-pressure return port. Crucial: Never plug this port; it must return to the hydraulic tank.
4. INTERNAL REPAIR COMPONENTS
Rotary Group: Cylinder block, 9 pistons, valve plate, and swashplate.
Planetary Set: Sun gear and three planet gears per stage.
Floating Seal (Duo-Cone): The critical interface that keeps gear oil in and dirt out.
Main Bearings: Large-diameter ball bearings supporting the rotating hub.
5. MAINTENANCE & INSTALLATION PROTOCOL
Gear Oil Grade: SAE 90 or 80W-90 (API GL-4 or GL-5).
Oil Capacity: Approx. 0.3 - 0.4 Liters.
Warning: Because the volume is so small, even a minor leak will lead to gear seizure within hours of operation.
Case Drain Safety: Before starting, ensure the case drain line is clear. Excessive pressure here will pop the main shaft seal, causing hydraulic oil to contaminate the gearbox.
Mounting Bolts: Use Loctite and torque to factory specifications to prevent bolts from shearing during counter-rotation.