ناقل الحركة النهائي Nachi PHV-390-53B-1-8940A 333/S0071 لـ حفارة صغيرة JCB 8026 CTS

1.Basic Info
Product: Original Nachi Final Drive Travel Motor with Gearbox
OEM Type: PHV-390-53B-1-8940A
Part Numbers: 333/S0071
Compatible Models: JCB 8026 CTS Mini Excavator
Application: Mini Excavator Travel System Parts
Condition: Original New
Note: Integrated assembly of hydraulic travel motor and planetary reduction gearbox
2.Core Advantages
Genuine Nachi integrated design, fully matches original travel performance and traction output
Compact all-in-one structure perfectly adapts to the limited chassis space of 2.6-ton mini excavators
Hardened gear train and wear-resistant piston assembly ensure long service life under frequent travel and steering cycles
Pre-assembled and factory-calibrated unit, direct bolt-on replacement without complex on-site debugging
3.Technical Data
Assembly Type: Integrated final drive unit (axial piston travel motor + multi-stage planetary gear reducer)
Function: Delivers driving torque for crawler travel and pivot steering of mini excavator
Internal Structure: Piston motor unit, multi-stage planetary gear set, built-in wet parking brake
Hydraulic Circuit Fluid: Anti-wear hydraulic oil ISO VG46
Gearbox Lubricant: Industrial gear oil ISO VG150
Rated Working Pressure: 25.0 MPa
Max Peak Pressure: 28.0 MPa
Brake Type: Spring-applied, hydraulic-released multi-disc parking brake
Mounting Interface: Original bolt hole layout and spigot dimension matching JCB 8026 CTS chassis
Output Sprocket Interface: Matches original track sprocket specification for reliable crawler engagement
Bench Test Items: Travel speed verification, brake holding torque test, pressure holding test, full-range leakage inspection
Weight: 38kg approx
4.FAQ
Q1: Is this a complete final drive with both motor and reduction gearbox?
A1: Yes, it is an integrated assembly including hydraulic travel motor and planetary gear reducer, ready for direct installation.
Q2: Can I replace only one side of the travel drive on the machine?
A2: Single-side replacement is supported, but synchronous inspection of both travel units is recommended to avoid walking deviation.
Q3: What usually causes weak travel or track deviation?
A3: Common triggers include internal wear of motor piston parts, insufficient system pressure, or worn reduction gear components.