Swing Motor for Yanmar SV18 Excavator

Swing Motor for Yanmar SV18 Excavator

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 4 year year

Product details

Swing Motor for Yanmar SV18 Excavator

Product Overview

This swing motor is a vital replacement hydraulic piston motor for Yanmar SV18 mini excavator. It provides rotational driving force for the upper‑structure slewing movement, transmitting power to the whole hydraulic system to complete left‑right rotation of the Machine. Worn or damaged swing motor will bring about slewing weakness, slow rotation, swing drift, internal oil leakage and abnormal knocking noise. This aftermarket component follows original installation standards, perfectly suited for equipment maintenance and overhaul of small construction machinery.

Technical Specifications

- Applicable Machine: Yanmar SV18 Mini Excavator

- Product Name: Swing Motor (Slewing Motor)

- Product Type: Hydraulic piston motor

- Working Medium: Anti‑wear hydraulic oil

- Working Pressure: OEM matching standard

- Installation: Direct bolt‑on replacement, no extra modification

- Assembly: Includes motor body, piston parts, distribution valve, sealing groups

- Function: Drives excavator upper body rotation

Working Principle

Driven by pressure oil delivered from the hydraulic system, high‑pressure hydraulic oil enters the inner chamber of this swing motor. It pushes the piston assembly to generate torque and rotational speed, then drives the rotary reducer to realize the slewing motion of the excavator cab. The motor adjusts output torque according to actual operating load of the Machine, realizing stable start‑up, rotation and braking performance. Good sealing condition prevents pressure loss and maintains steady slewing action.

Core Advantages

1. Original‑equivalent mounting dimension, simple onsite disassembly and replacement.

2. High‑precision internal friction pairs, low vibration and low running noise.

3. Premium sealing components, effectively reduce internal and external hydraulic oil leakage.

4. Resolve common faults: weak swing power, slow rotation, swing creeping, poor braking effect.

5. Great compatibility with the original hydraulic system, stable performance under frequent start‑stop working cycles.

Application Scope

Specially matched for Yanmar SV18 compact excavator. Widely used in indoor demolition, garden landscaping, municipal pipeline engineering and narrow‑space construction scenarios. It is an essential executive spare part to recover normal rotary performance of the small‑size Machine.

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

 Audited supplier

4 year

Address: Ningbo, China

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

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