KP30.82 Hydraulic Gear Pump | AT431670 for John Deere 580 590SR | KP30.82S0-06SU

LIC Hydraulic proudly offers the KP30 Series, a heavy-duty cast iron gear pump engineered for demanding mobile applications. Designed as a rugged alternative to standard aluminum pumps, the KP30 series (e.g., KP30.82) is the preferred power source for dump trucks and earthmoving equipment. Specifically, our AT431670 replacement is meticulously calibrated for John Deere 580 and 590SR series loaders. The sophisticated model KP30.82S0-06SU-LRR/RP-N-HSC features high-strength cast iron construction, providing superior resistance to pressure spikes and thermal fatigue. Our units guarantee 100% original interchangeability, delivering OEM-level performance with enhanced durability.

Technical Specifications (Bulleted List)

• Series: KP30 High-Pressure Gear Pump

• Main Models: KP30.82, KP30.82S0, AT431670

• Displacement: $82\text{ cm}^3\text{/rev}$ ($5.0\text{ in}^3\text{/rev}$)

• Operating Pressure: $210\text{ bar}$ ($3045\text{ PSI}$) to $250\text{ bar}$ ($3625\text{ PSI}$)

• Max Speed: Up to $3000\text{ RPM}$

• Body Material: High-strength Ductile Iron (HSC)

• Compatibility: Direct fit for John Deere 580/590SR loaders and various dump truck hoist systems.

Key Technical Advantages

• Cast Iron Durability: The ductile iron body offers exceptional structural integrity compared to aluminum, minimizing housing expansion at high temperatures and maintaining peak efficiency under heavy loads.

• Automatic Pressure Compensation: Precision-engineered floating side plates adjust automatically to maintain optimal clearance between the gears and plates, ensuring high volumetric efficiency ($>95\%$).

• Advanced Gear Profile: Gears are shaved and ground to minimize noise and ripple, providing smoother operation even at maximum flow rates.

• Heavy-Duty Bushing Design: Equipped with high-lead bronze or DU bushes that excel in high-load, low-speed conditions, offering superior fatigue resistance over standard needle bearings.

Application Areas

• Backhoe Loaders: Main hydraulic supply for John Deere 580 and 590SR series.

• Dump Truck Hoists: Primary pump for large-capacity tipping and lifting mechanisms.

• Heavy Ag Equipment: Auxiliary hydraulic functions for high-horsepower tractors.

Expert Maintenance Tips

• Inlet Sealing Integrity: Ensure the suction line is perfectly sealed. As a high-displacement pump, the KP30 is prone to cavitation if air is introduced, which can lead to rapid erosion of the internal gears and housing.

• Drive Shaft Alignment: When installing the KP30.82S0, ensure perfect alignment between the pump shaft and the PTO or engine drive. Misalignment is the primary cause of shaft seal failure and front bearing wear.

• Filtration Standard: To protect the precision-machined cast iron surfaces, maintain a filtration level of at least ISO 4406 19/17/14. Regularly check for metallic debris which could indicate premature gear wear.

Related Models：