HELM PUMP

Model

Series

Hydraulic Steering INBOARD

Product Description

If Steering wheel is rotated in clock wise, oil is pump out from the port ( right port from the front view) into the port of cylinder ( starboard side ).

This cause the cylinder rod move to forward, which move the boat rudder to right side ( starboard) Oil displaced from the opposite end of the cylinder flows back to the helm pump. For steering in the opposite direction, simply turn the helm pump the other way.

When no course corrections are required, the inbuilt lock valve holds the rudder stationary.

HELM PUMP

- SS 304 SHAFT

- Adjustable Displacement from 48cc to 85cc for HP4590T

- Fixed Displacement for NSH helm pump

- Lock Valve Inbuilt

- Mounting Hardware and steering wheel mounting hardware supplied as standard

- Interconnecting ports for dual stations of steering

APPLICATION GUIDE

Complete Model	System Basic Recommend Components		Wheel turns	Recommend		Suitable Steering Wheel Size
	System Basic Recommend Components		Wheel turns	torque	engine power
	Cylinder	Helm Pump	Lock to lock	kgf.m	HP
MI 34N	IOC-4020	NSH 022	5.5	34	75	Dia 350mm
MI 48N	IOC-4021	NSH 025	6.7	48	75
MI 61N	IOC-4022	NSH 030	7.1	61	110
MI 75N	IOC-5024	NSH 037	7.1	75	110	Dia 395mm
MI 96N	IOC-5025	NSH 044	7.7	96	140
MI 117N	IOC-5026	NSH 044	9.3	117	180

Complete Model	System Basic Recommend Components		Wheel turns	Recommend		Suitable Steering Wheel Size
	System Basic Recommend Components		Wheel turns	torque	engine power
	Cylinder	Helm Pump	Lock to lock	kgf.m	HP
MI 118H	IOC-5024	HP 4590T	3.1~5.5	118	180	Dia 600mm
MI 151H	IOC-5025	HP 4590T	4.0~7.0	151	250
MI 185H	IOC-5026	HP 4590T	4.8~8.6	185	250
MI 270H	IOC-6325	HP 4590T	7.1~12.5	270	250
MI 329H	IOC-6326	HP 4590T	8.6~15.3	329	350