4PA39J0313XB Hydraulic Swing Motor Rotor Pump Gerotor Gear Set for B37 Excavator

Product Description

Restore the hydraulic efficiency of your machinery with this high-precision 4PA39J0313XB Hydraulic Swing Motor Rotor Pump Gerotor Gear Set. Engineered specifically for the B37 excavator swing system, this rotor pump set provides stable fluid pressure and smooth rotary power, ensuring your excavator operates at peak performance under heavy-duty conditions.

Key Specifications

• Part Number: 4PA39J0313XB
• Model Application: B37 Excavator Rotary System
• Item Name: Hydraulic Swing Motor Rotor Pump / Gerotor Gear Set
• Condition: 100% Brand New Aftermarket Replacement
• Material: Heavy-Duty Anti-Wear Component Steel
• Warranty: 6 Months Warranty (Buy with Confidence)

Wholesale Tiered Pricing

• 1 - 5 Pcs: $120.00 / Pc
  • 6 - 20 Pcs: $95.00 / Pc
  • 21 - 50 Pcs: $75.00 / Pc
  • 51+ Pcs: Welcome bulk buyers! Please click 'Inquiry' to get the best wholesale factory price.

Why Choose Our B37 Rotor Pump Set?

• CNC Precision Machined: Manufactured via advanced CNC technology to guarantee a 100% exact fit with the inner spline and bore sizes.
• Rigorous Factory Measurement: Each unit undergoes strict dimensional checks (including thickness, overall width, and bore size verification) to ensure zero-leakage performance.
• Extended Service Life: Made of high-grade alloy steel treated for superior wear resistance in high-pressure environments.
• Minimized Downtime: Ready to ship with robust export packing to protect precision gear teeth during international transit.

Important Notice Before Ordering

Please carefully check the dimension check markings in our product photos and verify your original part number (4PA39J0313XB) before purchasing. If you need any assistance, please send us your machine serial number, and our technical team will confirm compatibility for you immediately!