389-1201 ROTATING-GP | REPLACEMENT FOR CATERPILLAR

3891201 389-1201

  • Application: For Caterpillar 440
  • Customization: labels and logo
  • Delivery: 7-15 working days
  • Certifications: ISO 9001 / ITS

Material:

Carbon Steel

The Barrel in a piston pump is a cylindrical chamber where the reciprocating piston moves back and forth. It provides a sealed space for fluid or gas displacement. It creates a suction to draw in fluid or gas, compresses it, and then pushes it out through an outlet. The piston's movement creates a cycle of suction, compression, discharge, and return strokes to continuously pump the fluid or gas.

Attributes:
• Made up of Carbon Steel and Alloy Steel.
• Withstands pressure and forces.
• Manufactured with precise dimensions for optimal performance.
• Provides a tight seal to minimize leakage.

Application:
The Barrel in a piston pump creates a sealed chamber for fluid displacement and guides the piston's reciprocating motion.

Mini Hydraulic Excavators

309 310

Wheel Dozers

824 824K

Backhoe Loaders

440 450

Wheel Skidders

535D 555D 545D 525D

Wheel Tractor-Scrapers

621K OEM

Pipelayers

PL83 PL87 PL72

Landfill Compactors

826K 826

Motor Graders

12M 160 12M 3 12M 2 120 14 140M 120M 160M 2 160M 3 160M 140M 3 AWD 14L 150 12M 3 AWD 160M 3 AWD 140M 3 140M 2 140 120M 2

Rotary Blasthole Drills

MD6380 MD6310

Wheel Tractor-Scrapers

627K 623K LRC 623K 627 623 621 627K LRC 632 621K

Soil Compactors

825 825K

Track-Type Tractors

D9T

Wheel Loaders

972M XE 980K HLG 966M XE 972M 972L 980L 980K 972XE 980M 972 XE 966 XE 986 966XE 988GC 966L 986H 966M 986K 982M

Off-Highway Trucks

789G 789

Product Introduction

PRECISION-ENGINEERED ROTATING GROUP

Designed for reliable hydraulic performance in demanding Caterpillar applications.

  • Precision-Machined Components — Tight dimensional control supports accurate fitment and smooth operation.

  • Wear-Resistant Materials — Selected materials and surface treatments help withstand continuous high-load operation.

  • Balanced Rotating Assembly — Optimized component matching helps minimize vibration and maintain stable pump performance.

  • Reliable Replacement Solution — Engineered as an aftermarket replacement for selected Caterpillar hydraulic piston pumps.

  • 100% Quality Inspected — Critical dimensions, surface condition, assembly, and performance are inspected before shipment.

PRECISION MANUFACTURING & QUALITY CONTROL

Every HYDSTAR rotating group is manufactured using CNC machining processes and controlled to strict dimensional requirements throughout production.

MULTI-STAGE QUALITY CONTROL

01 — Dimensional Inspection
Critical dimensions and tolerances are verified to ensure accurate component fitment.

02 — Surface & Hardness Inspection
Surface condition and hardness are checked to ensure consistent wear resistance.

03 — Assembly Inspection
Component matching, clearance, and assembly condition are inspected before final approval.

04 — Performance Testing
Completed assemblies undergo functional testing to verify stable and reliable operation.

ROTARY GROUP

 

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