191-7581 SHAFT | REPLACEMENT FOR CATERPILLAR

1917581 191-7581

Application: HYDRAULIC PUMP & MOTOR
MOQ: 1 PCS
Customization: Labels and logo
Delivery: 7-15 working days
Warranty: 6-12 months
Certifications: ISO 9001 / CE

Material:

Carbon Steel

HYDSTAR® hydraulic pumps and core components—including pump shafts, gears, bearings, oil seals, swash plates, cylinder blocks, retainer plates, ball guides, friction plates, thrust plates, bushings, and gaskets—are engineered to deliver superior power support for heavy-duty equipment and high-load applications. By maintaining efficient, stable fluid circulation and pressure output, they effectively minimize system wear and prevent mechanical damage caused by poor lubrication or pressure fluctuations.

Precision Manufacturing and Superior Materials: Components are precision-machined from high-strength premium carbon steel and wear-resistant stainless steel. This fundamentally enhances the rigidity and fatigue strength of core parts, ensuring reliable operation even under extreme working conditions.

Reliable Sealing and Extended Service Life: Featuring optimized, high-quality oil seal and gasket combinations alongside hardened bearing retaining rings, these components effectively prevent internal leakage and reduce operational friction, significantly extending the service life of the entire assembly.

Rigorous Testing and Reliable Quality: Every HYDSTAR® component is manufactured to exacting standards and undergoes rigorous performance and quality testing. This ensures a perfect fit for your equipment, guaranteeing efficient system operation and outstanding overall performance.

Whether for routine maintenance, major system overhauls, or component replacements, HYDSTAR® provides durable, trustworthy solutions for heavy-duty hydraulic and lubrication systems.

Wheel Dozer

834 834K

Transmission

TR16-C7.1

Wheel Skidder

535D 545D 555D 525D

Wheel Tractor

651E 657E 657G

Asphalt Paver

AP500F AP1055 AP500 AP-1055F AP655 AP655F PE636 AP400 AP555 AP455 AP655F L AP600 AP600F AP555F AP1000

Truck

797

Landfill Compactor

836 836K

Motor Grader

12H 120H 160H 135H 163H 140H 16H 143H 14H

Integrated Toolcarrier

IT38H

Generator Set

3512

Material Handler

MH3260 MH3037

Wheeled Excavator

M330D

Wheeled Feller Buncher

2570C 2570D 573C 573D 563C 563D 2670C 553C 2670D 2470C

Excavator

340 349 349D L 330D MH 336 GC 336D 349D2 L 352 336D2 L 330D LN 340D2 L 345D L VG 336D LN 336D2 GC 340D L 336 330D FM 345D 336 MHPU 345D L 349D2 336D L 336D2 330D 349D 330D L 345 GC 352 UHD

Track-Type Tractors

D6 D6XE D10 D11 D6 XE

Wheel Loaders

962 988 XE 988 962L 950M 950L 962M 988K XE 988K 938H

OEM Mobile Hydraulic Power Units

336MHPU

Mobile Hydraulic Power Units

330D L 345D 349D L 340D2 L 336D L 330D 349D2 336D

Product Introduction

Precision Manufacturing

Our Piston Pump Spare Parts are manufactured with strict dimensional control and precision machining processes to ensure accurate fitment and reliable operation. Critical components are carefully processed to maintain proper tolerances, surface finish, and matching accuracy. Precise manufacturing helps reduce abnormal wear, internal leakage, and operating instability, supporting consistent hydraulic performance after repair or replacement.

Excellent Wear Resistance

Selected materials and optimized surface treatments help provide excellent resistance to friction, pressure, and continuous mechanical contact. Components such as pistons, cylinder blocks, valve plates, and swash plates are designed to withstand demanding hydraulic operating conditions. Improved wear resistance helps maintain stable clearances and contact surfaces, contributing to longer component life and more reliable pump operation.

shaft

Accurate Component Matching

Proper matching between internal components is essential to piston pump efficiency and reliability. Our spare parts are designed to provide accurate contact and dimensional compatibility between pistons, slippers, cylinder blocks, valve plates, retainers, shafts, and other critical components. Correct component matching helps maintain stable pressure, smooth rotation, and efficient hydraulic power transmission.

Reliable Hydraulic Performance

High-quality replacement parts help restore the operating performance of worn or damaged piston pumps. Accurate sealing surfaces and controlled internal clearances help reduce unnecessary leakage and pressure loss while supporting stable oil flow and efficient operation. Proper replacement of critical components can improve pump response, reduce vibration, and help restore normal system performance.

 

Related Products

Reliable accessory solutions suitable for a variety of engineering machinery and operating scenarios, ensuring stable equipment operation and effectively reducing maintenance and operating costs.
swashplate

swashplate

155-9131

swashplate

swashplate

195-9634

Guide

Guide

295-9540

retainer plate

retainer plate

266-7837

Request A Free Quote

Don't hesitate to contact us. HYDSTAR HYDRAULIC experts are very happy to help you, provide a variety of flexible and reliable solutions to help you solve various problems.