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137-4581 ROTATING-GP | REPLACEMENT FOR CATERPILLAR

1374581 137-4581

  • Application: For Caterpillar 308
  • Customization: labels and logo
  • Delivery: 7-15 working days
  • Certifications: ISO 9001/ITS/CE
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ROTARY GROUP
ROTARY GROUP
ROTARY GROUP

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.

Cold Planers

PR-1000C PR-1000 PM-201 PM-565B

Pneumatic-Tired Rollers

CW-14 PS-200B PS-360B PS-360C PS-150C PS-150B PF-290B

Skid Steer Loaders

270XE 250 260 270

Mini Hydraulic Excavators

308 309

Compact Wheel Loaders

903 902

Mulcher Heads

HM810 HM112C HM112 HM115 HM912 HM215C HM210 HM115C HM215 HM208

Compact Track Loaders

285XE 275 285 253 255 265 275XE

Single-Drum Vibratory Rollers

CS56B CS68B CP68B CP56B CS66B CS78B CP12 CP14 CP16 CP17 CS20 CS76B CS12 CS13 CS14 CS16 CS17 CS19 CS74B CP74B

Vibratory Compactors

CP-64 CS-56 CS78B CS-56B CS-68B CP-56 CP-573E CP-533D CP-533C CB-64 CB-534C CP-74B CB-534D CS-663E CB-54 CS-66B CS-78B CS-583E CS-531D CS-583C CS-583D CP76B CS-531C CB-564D CS-79B CP-663E CS-531 CP12 CS-76B CS74B CB-634C CB-634D CS-573C CS-573D CS-573E CS-533C CS-533D CP74B CS-683E CS-76 CS-74 CS68B CS56B CS-74B CS12 CS14 CP-563E CP-76 CP-563D CS-563C CS-563D CP-563C CS-563E CP-74 CS-64 CS79B CP-56B CP-68B CP68B CP56B

Truck

MT4400D AC

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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