Replacement Hydraulic Travel Drive Motor Assembly for KYB MAG Series

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Product details

Replacement Hydraulic Travel Drive Motor Assembly for KYB MAG Series

Product Overview

This replacement hydraulic travel drive motor assembly is a complete aftermarket substitute compatible with KYB MAG series travel units. It integrates axial piston motor, multi‑stage planetary reduction gear set, spring‑applied multi‑disc parking brake and full sealing components. This unit delivers travelling power for crawler‑type equipment and provides reliable slope anti‑slip parking brake function. The installation dimensions, spline specifications, port positions and performance parameters are consistent with original KYB MAG series, supporting direct drop‑in replacement without mechanical modification.

Main Technical Parameters

Item Specification

Product Name Replacement Hydraulic Travel Drive Motor Assembly for KYB MAG Series

Matching Series KYB MAG series travel motor

Structure Composition Axial piston motor + planetary gear reducer + spring‑applied parking brake assembly

Max continuous working pressure 240‑320 bar

Displacement Matches corresponding original MAG model displacement

Rated output torque Equivalent to OEM original torque

Rotating speed Conforms to original travel speed requirement

Brake mode Spring‑engaged, hydraulic‑released wet multi‑disc parking brake

Seal option NBR standard, FKM for high‑temperature working condition

Hydraulic oil Anti‑wear hydraulic oil ISO‑VG32 / VG46

Operating temperature ‑20℃ ~ +80℃

Working Principle

1. High‑pressure hydraulic oil enters the axial piston motor, converting hydraulic energy into mechanical rotary power.

2. Rotary power passes through multi‑stage planetary gear reducer, output low‑speed and high‑torque power to drive the crawler sprocket.

3. Parking brake function: When travel control pressure disappears, spring force pushes friction discs to lock output shaft and prevent machine sliding on slopes. During travelling, pilot hydraulic pressure overcomes spring force to release brake.

4. The internal flow path and control logic fully replicate original KYB MAG series, realizing plug‑and‑play replacement.

Core Advantages

1. Direct replacement: mounting hole, oil port layout, spline size same as original KYB MAG series, no modification during installation.

2. Complete pre‑assembled unit, including motor, gearbox, brake and full seal kit, simplifies aftermarket repair work.

3. Robust housing and internal components, excellent shock‑resistance, adapt to heavy‑load and harsh construction‑site environment.

4. Stable wet multi‑disc parking brake, reliable anti‑slip performance for gradient operation.

5. Cost‑effective aftermarket alternative, shorter production lead‑time compared with original OEM spare parts.

Typical Application

Mini‑medium crawler excavators, crawler drilling rigs, tracked compact construction machinery, other crawler‑driven equipment. Used for overhaul and replacement of KYB MAG series original travel drive assembly.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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4 year

Main Product: hydraulic motor, gear box, hydraulic pump, hydraulic valve , hydraulic winch, hydraulic system

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