KOMATSU PC40MR-2 PC50MR-2 Main Hydraulic Pump 708-3S-00522 708-3S-00521 708-3S-00422 708-3S-00421 708-3S-00460 708-3S-00461 For Mini Excavator Parts

Genuine & Refurbished Axial Piston Pump for Mini Excavator Parts

Part Name: Variable displacement axial piston main hydraulic pump

Main PN:708-3S-00522,708-3S-00521,708-3S-00422,708-3S-00421,708-3S-00460,708-3S-00461

Applicable Models: Komatsu PC40MR-2, PC50MR-2 mini excavator

Product Grades: Genuine New, Refurbished Pump, Premium Aftermarket New

Warranty: 12 months for genuine and refurbished pumps; 6–12 months for aftermarket pumps

Net Weight: 44 kg

Stock Status: In stock, shipped within 3–7 working days after order confirmation

1. Manufactured strictly following OEM drawings to match the original hydraulic system parameters of PC40MR-2 and PC50MR-2
2. Load sensing control automatically adjusts flow output to lower power waste and fuel consumption
3. Precision internal friction pairs guarantee stable working pressure and low internal oil leakage
4. Consistent mounting dimensions, oil port positions and spline shaft structure for direct bolt-on replacement
5. Optimized sealing components effectively prevent oil seepage under long-time heavy construction loads
6. Each finished pump completes pressure, flow and leakage bench detection before delivery

Pump Type: Variable axial piston hydraulic pump

Max working pressure: 26 MPa

Control Mode: Load sensing pressure compensation control

Rated rotational speed: 2300 rpm

Input Shaft: OEM standard spline specifiion

Rotation Direction: Original factory designated rotation direction

Function: Supply hydraulic power for travel, swing, boom, arm and bucket operating circuits

Applicable Equipment: Komatsu PC40MR-2, PC50MR-2

Interchange PN Group:708-3S-00522,708-3S-00521,708-3S-00422,708-3S-00421,708-3S-00460,708-3S-00461

Specialized in Komatsu mini excavator hydraulic pump spare parts. Multiple quality grades meet different procurement budget demands. Complete QC testing system ensures long-term stable operation. Sufficient spot goods support global sea and air transportation. Provide professional installation guidance and after-sales technical service.

Q1: Can all these part numbers be used interchangeably?

A: These serial numbers are alternative supersession OEM numbers of the same pump assembly, fully interchangeable for maintenance replacement.

Q2: What are the merits of refurbished hydraulic pumps?

A: All worn internal components are replaced and calibrated to OEM standards, possessing obvious cost advantages over genuine new pumps.

Q3: Delivery time arrangement?

A: In-stock products will be delivered within 3–7 working days with global logistics channels available.