ناقل الحركة النهائي KYB MAG-26VP travel motor 706-73-00600 لـ حفارة صغيرة Komatsu PC30-1 PC38UU-1 PC40-6 PC40-7 PC40R-7 PC40T-7

1.Basic Info
Product: KYB MAG‑26VP Complete Final Drive Travel Motor Assembly
OEM Numbers: 706‑73‑00600, 706‑73‑43002, 20T‑60‑42100, 20T‑60‑43100, 20T‑60‑78120
Compatible Models: Komatsu PC30‑1, PC38UU‑1, PC40‑6, PC40‑7, PC40R‑7, PC40T‑7 Mini Excavator
Application: Mini Excavator Crawler Travel System Parts
Condition: Original New
Note: Integrated unit of two‑speed travel motor and planetary reduction gearbox
2.Core Advantages
Genuine KYB MAG‑26VP OEM assembly, built‑in 2‑speed shift function for site travelling demands
Integrated counterbalance and crossover relief valves deliver smooth start‑stop movement with low shock
Reinforced floating seal structure resists mud and water ingress on muddy construction sites
Full dimensional interchangeability for original Komatsu installation without modifying track frame
3.Technical Data
Assembly Type: Integrated final drive, two‑speed axial piston motor + multi‑stage planetary reducer
Function: Provide crawler driving torque, pivot steering and slope holding for 3‑4 ton mini excavator
Internal Components: Piston motor group, 2‑speed shift mechanism, planetary gear set, spring‑applied wet multi‑disc brake, built‑in counterbalance valve
Hydraulic Medium: Anti‑wear hydraulic oil ISO VG46
Gearbox Lubricant: Industrial gear oil ISO VG150
Rated Working Pressure: 24.5 MPa
Max Instant Peak Pressure: 27.5 MPa
Max Output Torque: Matches OEM specification for PC30‑1 / PC40‑7 series
Shift Function: Hydraulic pilot controlled high/low speed switching
Brake Mode: Spring‑engaged, hydraulic‑released negative parking brake
Mounting Interface: Original bolt circle, spigot dimension and hydraulic port layout
Sprocket Interface: Matches OEM sprocket for track drive engagement
Bench Validation: Two‑speed switching test, brake holding torque, pressure retention, leakage and noise inspection
Weight: 48kg approx
4.FAQ
Q1: Does this final drive support high‑low speed switching?
A1: Yes, built‑in 2‑speed mechanism, compatible with machine original pilot control circuit.
Q2: What should be checked before fitting this travel assembly?
A2: Inspect track frame sealing surface, clean oil ports, verify sprocket tooth wear condition.
Q3: What causes final drive overheating?
A3: Excessive internal leakage, insufficient gear oil level, failed counterbalance valve or dragging parking brake.