Danfoss H881 Navigating Hydraulic Hose User Guide

: June 1, 2024
: Danfoss

Table of Contents

Introduction
Applications
Features
Benefits
Identify Hose Construction
Hydraulic hose FAQs
Temperature
Fluid compatibility
Hose size
Industry standards & certifications
Impulse life
Hydraulic hose specs
Government agencies
Industry agencies
Customer Support
Documents / Resources

Danfoss H881 Navigating Hydraulic Hose

Introduction

Weatherhead® by Danfoss H881 Dynamax® hose exceeds EN857 Type 2SC specifications

There are a million reasons to choose Weatherhead H881 Dynamax hose.

Well, actually one million +

Danfoss is proud to introduce the Weatherhead® Dynamax® H881 hose, the new high performing, two wire EN857 2SC braided hose, qualified to one million impulse cycles. The Dynamax H881 hose outperforms the typical EN857 2SC 200,000 impulse cycle requirement by 5X, in addition to providing a range of other benefits such as: lighter weight, higher abrasion resistance, and higher pressure & temperature ratings. Weatherhead by Danfoss Dynamax H881 hose provides many advantages in applications such as agriculture, oil & gas, and mining including reduced cost, decreased downtime, and better fuel efficiency. See below for more information regarding applications, features and benefits:

Applications

Waste/Refuse Trucks
Construction equipment
Forestry/Logging equipment
Aerial lifts
Agricultural equipment

Features

One million impulse cycle performance
Higher pressure ratings than standard two wire braided hose
Low compression set due to new Dura-Pulse™ inner tube
Dynamax H881 hose provides superior flexibility (1/3 SAE 100R2 bend radius at 100°C)
Dura-Tuff™ premium abrasion cover

Benefits

Extended product life expectancy over standard EN857 Type 2SC hoses
Allows for use in a broader range of hydraulic systems where four spiral hoses may have been required in the past
Better sealing and leak free performance
Improved flexibility for easier installation in tight spaces
Provides additional abrasion resistance which is a leading cause of hydraulic hose failures

Why replace spiral hose with Weatherhead H881 Dynamax two wire braided hose?

H881 two wire braided hose vs SAE100R12 spiral hose

Premium H881 two wire braid hose
Standard four wire 100R12 spiral hose

Pressure	H881 hose	SAE 100R12 Spiral hose
Hose sizes	-6	5,800
-8	5,220	4,000
-10	5,075	4,000
-12	4,785	4,000
-16	4,060	4,000
Bend Radius	H881 hose	Spiral hose
Hose sizes	-6	1.65
-8	2.36	7.09
-10	2.68	7.87
-12	3.15	9.45
-16	5.91	11.81
Weight	H881 hose	Spiral hose
Hose sizes	-6	.28
-8	.39	.59
-10	.50	.70
-12	.69	.90
-16	.99	1.20
Temperature	H881 hose	Spiral hose
All sizes	-50º F to 260º F (-46º C to 126º C)	-40º F to 248º F (-40º C to

120º C)
Impulse life| H881 hose| Spiral hose
All sizes| 1,000,000 impulse cycles| 500,000 impulse cycles
Fittings| H881 hose| Spiral hose
All sizes| Z series braided fittings| Spiral fittings
Feature| Benefit
---|---
Lighter weight| Lighter hose reduces overall machine weight for more fuel efficient machines
Better flexibility & 1/3 bend radius| Easier to route/replace and requires less hose overall
High pressure rating| Longer hose life, more application options & improved safety factors
Z series fittings| Lower cost than spiral fittings and minimizes inventory by eliminating the need to stock spiral fittings
One million impulse cycles| Longer hose life, more application options & improved safety factors
Dura-Tuff® premium abrasion cover| 8x higher abrasion resistance for longer hose life, more application options & improved safety factors
Higher operating temperature| Longer hose life, more application options & improved safety factors

H881 two wire braid hose vs 100R12 four wire spiral hose

reduced cost
reduced weight
better flexibility
higher pressure rating
higher operating temp
more impulse life
higher abrasion resistance
and over 50% more flexible
qualified cycles

Premium

H881 Core premium Dynamax ultra-performance two wire braided hose
Benefits

Exceeds: SAE 100R16 | SAE 100R19 | EN 857 2SC | ISO 18752
Benefits

Typical application:

Hydraulic systems with petroleum and water-based fluids, for general industrial service.

This Dynamax ultra-performance hose with the Danfoss Dura-Pulse inner tube combines the lightweight flexibility of a two-wire braided hose with the pressure and performance of spiral 100R12 hoses (-16 and smaller).

Agency specifications:| ABS | DNV | MSHA
---|---
Hose construction:| Inner tube:
Dura-Pulse patented tube| Reinforcement :
Two wire braid| Cover:
Dura-Tuff premium abrasion
Operating temperature:| -46°C to +126°C (-50°F to +260°F)
-46º C to +70º C (-50 to +158º F) for water based hyd. fluids
0º C to +70º C (+32ºF to 158º F) for water
Qualified fittings:| Z series
PART| SIZE DIMENSIONS| PRESSURE| BEND| WEIGHT
---|---|---|---|---
#| Hose I.D.| Hose O.D.
(nominal)| Working
Pressure| Min. Burst
pressure| Min. Bend
Radius| Weight
**| mm| in| mm| in| bar| psi| bar| psi| mm| in| kg/m| lbs/ft
H88104| 6,4| 0.25| 13,6| 0.54| 450| 6,525| 1800| 26,100| 33| 1.30| 0,32| 0.22
H88106| 9,5| 0.38| 17,3| 0.68| 400| 5,800| 1600| 23,200| 42| 1.65| 0,42| 0.28
H88108| 12,7| 0.50| 17,3| 0.68| 360| 5,220| 1440| 20,880| 60| 2.36| 0,58| 0.39
H88110| 15,9| 0.62| 24,0| 0.94| 350| 5,075| 1400| 20,300| 68| 2.68| 0,75| 0.50
H88112| 19,0| 0.75| 27,9| 1.10| 330| 4,785| 1320| 19,140| 80| 3.15| 1,03| 0.69
H88116| 25,4| 1.00| 34,6| 1.36| 280| 4,060| 1120| 16,240| 150| 5.91| 1,47| 0.99
H88120| 31,8| 1.25| 43,4| 1.71| 172| 2,500| 688| 9,980| 210| 8.27| 1,75| 1.18
H88124**| 38,1| 1.50| 51,8| 2.04| 138| 2,000| 552| 8,000| 250| 9.84| 1,91| 1.28

Choosing between braided or spiral hose?

What pressure (psi) is needed?

Choosing between a braided or spiral hydraulic hose depends on several factors.

Braided hose:

Flexible | Tighter bend radius | Compact applications with frequent movement | Medium/High pressure Braided hoses are ideal for applications requiring flexibility and a tighter bend radius, making them suitable for installations with limited space or where frequent movement occurs. They provide excellent resistance to abrasion and are often preferred for medium-pressure hydraulic systems.

Braided –

Medium pressure hose

Spiral hose:

Rigid | Strong | Heavy-duty machines or industrial settings | High pressure

Spiral hoses are better suited for high-pressure applications due to their reinforcement structure, which offers greater strength and support under intense pressure conditions. They are commonly used in heavy-duty industrial settings or machinery requiring robust hydraulic performance.

Ultimately, the decision between braided and spiral hoses should consider the specific requirements of the hydraulic system, including pressure levels, flexibility needs, and environmental factors, to ensure optimal performance and longevity

Spiral –

High pressure hose

Identify Hose Construction

braided or spiral

Check your layline.

Identify Hose Construction

Hydraulic hose FAQs

Critical considerations when selecting a hydraulic hose

Temperature

Temperature significantly impacts hydraulic hose performance, durability, and safety.
Hoses are designed for specific temperature ranges, exceeding which can cause degradation, leakage, or system failure.
High temperatures can soften or weaken hoses, increasing the risk of bursts, while low temperatures can cause stiffness or cracking, impeding fluid flow.
Selecting hoses based on temperature conditions is crucial for optimal performance, reliability, and longevity.
Considering temperature factors during hose selection mitigates risks, enhances system efficiency, and prolongs hydraulic component lifespan.

Fluid compatibility

Fluid compatibility is crucial when choosing a hydraulic hose.
Using the wrong fluid can damage both the hose and the entire system.
Different fluids have varying properties; using an incompatible one can degrade hose materials over time, leading to leakage or system failure.
Incompatible fluids may compromise seals and other components.
Ensuring the hose is compatible with the fluid used is essential for maintaining performance, reliability, and safety.

Hose size

Choosing the right hydraulic hose size is vital for optimal performance and safety.
A hose that is too small can restrict fluid flow, leading to inefficiencies and potential overheating.
Conversely, an oversized hose may cause fluid leakage and reduced system responsiveness.
Consider factors such as flow rate, pressure requirements, hose length, and fitting compatibility to determine the correct size.
Consulting system specifications and seeking guidance from manufacturers can help identify the best hose size for your application.

Industry standards & certifications

Industry standards and certifications ensure hydraulic hose quality, reliability, and safety.
Organizations like ISO and SAE set rigorous standards covering factors such as size, construction, and performance.
Compliance assures users of hoses meeting criteria for durability, pressure ratings, temperature ranges, and resistance to abrasion.

Impulse life

The hydraulic hose impulse life cycle measures a hose’s durability and performance under pressure surges or impulses.
Hydraulic systems often experience pressure fluctuations due to rapid changes in fluid flow, exerting stress on the hose.
If not designed to withstand such conditions, the hose may weaken or fail.
Manufacturers subject hoses to standardized impulse tests simulating real-world conditions, quantifying their ability to withstand pressure surges without degradation.
Selecting hoses with appropriate impulse life ratings ensures reliable performance, minimizing the risk of unexpected downtime.

Hydraulic hose specs

Which specs call out braided and spiral hose construction?

SAE specs

Government agencies

MSHA

US Mine Safety and
Health Administration

USCG

US Coast Guard

DNV

DNV/GL (USA) WC

Industry agencies

Committee for European Normalization

Customer Support

Danfoss Power Solutions, Nordborgvej 81, 6430 Nordborg, Denmark, Tel. +45 74 88 22 22, Fax +45 74 65 25 80
www.danfoss.com, E-mail: info@danfoss.com

Any information, including, but not limited to information on selection of product, its application or use, product design, weight, dimensions, capacity or any other technical data in product manuals, catalogues descriptions, advertisements, etc. and whether made available in writing, orally, electronically, online or via download, shall be considered informative, and is only binding if and to the extent, explicit reference is made in a quotation or order confirmation. Danfoss cannot accept any responsibility for possibly errors in catalogues, brochures, videos and other material. Danfoss reserves the right to alter its products without notice. This also applies to products ordered but not delivered provided that such alterations can be made without changes to form, fit or function of the product. All trademarks in this material are property of Danfoss A/S or Danfoss group companies. Danfoss and the Danfoss logo are trademarks of Danfoss A/S. All rights reserved.

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Documents / Resources

| Danfoss H881 Navigating Hydraulic Hose [pdf] User Guide
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