195-30-51481 Tensioning piston cylinder left Komatsu D375 bulldozer spare parts

The Komatsu D375 left tension piston cylinder (195-30-51481) is the “power transmission core” of the left-side track tensioning system. It adjusts the track tension by hydraulically driving the piston to extend and retract, buffering impact loads under harsh working conditions and compensating for track wear. It is specifically designed for the left-side tensioning system of Komatsu D375A-2/A-5/A-6/A-8 models, and can avoid track failures caused by piston cylinder leakage and deformation, thereby improving construction efficiency.
This product strictly adheres to Komatsu’s original standards and references the D375 series (474kW power, 72-ton working weight) left-side tensioning system specifications. It utilizes 40Cr alloy steel and fluororubber sealing components, offering advantages such as stable pressure resistance, impact resistance, excellent sealing, and convenient installation. Through precision seamless forging and heat treatment, and with precision-ground pistons, it achieves extremely low leakage rates, allowing for direct installation. This effectively reduces downtime losses, extends system life, and lowers maintenance costs. Widely used in mining, earthmoving, and infrastructure fields, it is a core component for left-side track maintenance.

Core technical parameters:

– Product Model: Komatsu D375 Tensioner Piston Cylinder (Left), Part Number 195-30-51481
– Product Type: Tensioning Piston Cylinder (Left Side Dedicated), Power Transmission Component for Chassis Track Tensioning System
– Core materials: Piston cylinder made of 40Cr alloy steel; Seals made of fluororubber (FKM); Piston made of precision-ground 45# steel.
– Material characteristics: 40Cr tensile strength ≥1000MPa, yield strength ≥800MPa, HRC45-50; piston roughness Ra≤0.15μm; fluororubber resistant to -25℃~+120℃, compression set recovery rate ≥85%.
– Operating parameters: Rated pressure 35MPa, maximum 40MPa, piston stroke 60-80mm, operating temperature -40℃~120℃, IP67 seal, suitable for left-side tensioning requirements of 72-ton models.
– Processing technology: seamless forging (forging ratio ≥3.5:1) + quenching and tempering, piston grinding + nitriding, after flaw detection, dimensional and sealing tests, conforming to GB/T 13314-2008 standard.
– Core dimensions: outer diameter 130mm, inner diameter 95mm, total length 620mm, piston diameter 94.8mm, piston rod 38mm, precisely matching the left mounting position.
– Compatible models: Komatsu D375 series (D375A-2/A-5/A-6/A-8, etc.), can directly replace original parts, compatible with 474kW models.

The Komatsu D375 tensioning piston cylinder (left) 195-30-51481, with its original factory compatibility and excellent performance, has become the preferred consumable for maintaining the left track of the D375 series, suitable for various needs of individuals, enterprises, and maintenance personnel. It is easy to install, can be directly replaced, and effectively solves problems such as piston cylinder deformation and leakage, reducing downtime, lowering costs, and improving efficiency.

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195-30-51481 Tensioning piston cylinder left
195-30-51491 Tensioning piston cylinder right