Hydraulic hoses for construction machinery, low-bend, long-life hoses for excavators

Data Display

Size	ISO18752			I.D （mm)	O.D （mm)	MAX.W.P （MPa)	MIN.B.P （MPa)	MIN.B.R（mm)	Weight （kg/m)	Connector series
Size	5991 Standard	5991 AR	5991 SAR	I.D （mm)	O.D （mm)	MAX.W.P （MPa)	MIN.B.P （MPa)	MIN.B.R（mm)	Weight （kg/m)	Connector series
SA5991-1/2"-4	BC	CC	CC	13.0	22.2	28	112	110	0.706	31series
SA5991-5/8"-4	BC	CC	CC	16.0	25.4	28	112	130	0.825	31series
SA5991-3/4"-4	CC	CC	CC	19.0	28.4	28	112	160	0.945	41series
SA5991-1"-4	CC	CC	CC	25.4	35.7	28	112	225	1.453	41series
SA5991-1 1/4"-4	CC	CC	CC	32.0	44.0	28	112	285	2.101	41series
SA5991-1 1/2"-4	CC	CC	CC	38.0	51.5	28	112	480	2.706	41series
SA5991 -2"-4	CC	CC	CC	51.0	65.5	28	112	650	4.302	41series

Note: 31 refers to the 31 series hose fittings; 41 refers to the 41 series hose fittings; 61 refers to the 61 series hose fittings. Select the corresponding model from the fitting series.

Product Introduction

Note Style

Product Features

Low bending
The average minimum bending radius of the entire series of hoses is 34% lower than the ISO 18752 Class C standard (Note: Class C standard refers to the compact category in the ISO 18752 standard), which facilitates installation and saves equipment space;

High pressure
The pressures all meet or exceed ISO 18752 AC/BC/CC/DC standards;

Life
With powerful pulse performance, all series of hoses have more than 1 million pulse cycles, which greatly extends the service life of the hoses.

Comparison of Super Hercules Low Bending Series Hose with ISO18752 Standard Parameters
Grade	ISO18752 Standard temperature	ISO18752 Standard pulse pressure	ISO18752 Standard minimum pulse	Super Hercules Minimum Pulse
AC	100℃（212℉）	133%	200,000 times	1,000,000 times
BC	100℃（212℉）	133%	500,000 times	1,000,000 times
CC	120℃（250℉）	133%	500,000 times	1,000,000 times
DC	120℃（250℉）	133%	1,000,000 times	1,000,000 times

Model Selection

The convenience of the Super Hercules low-bend series is mainly reflected in three aspects.

1.It has a clearly defined pressure rating, making it easy to find the model.。

Super Hercules Low Bending Series Hose Pressure Selection Table
I.D/Model	1/4”	5/16”	3/8”	1/2”	5/8”	3/4”	1”	1 1/4”	1 1/2”	2”
LTSA6991	—	—	—	18	15	14	14	14	9	8
LTSA6992	25	25	25	—	25	25	21	21	17.5	17.5
LTSA5991	—	—	—	28	28	28	28	28	28	28
LTSA5992	40	35	35	35	35	35	35	35	35	35
LTSA5993	45	45	45	45	42	42	42	42	42	42

2.Simply select the appropriate model from the three connector series.

Super Hercules Low Bending Series Connector Selection Table
I.D/Model	1/4”	5/16”	3/8”	1/2”	5/8”	3/4”	1”	1 1/4”	1 1/2”	2”
LTSA6991	—	—	—	31	31	31	31	31	31	31
LTSA6992	31	31	31	—	31	31	31	31	31	31
LTSA5991	—	—	—	31	31	41	41	41	41	41
LTSA5992	31	31	31	41	41	41	41	41	61	61
LTSA5993	41	41	41	41	41	41	41	61	61	61

Note: 31 refers to the 31 series hose fittings; 41 refers to the 41 series hose fittings; 61 refers to the 61 series hose fittings. Select the corresponding model from the fitting series.

3.Adopts integrated, peel-free connectors (31 and 41 series) and split connectors (61 series).

Note: The integrated peel-off adhesive and split-type connectors are used with Letone's self-developed hydrogenated nitrile butadiene seals, which are infinitely close to the goal of zero leakage.

Integrated, peel-free connector (31 and 41 series)

Eliminates hose crimping problems caused by excessive or insufficient adhesive stripping.
Saves manpower and is easy to operate.
One type of connector is suitable for various hoses.
Neat and beautiful after pressing.

Split-type connector (Series 61)

Greater flexibility, with a wider selection of connectors and sleeves.
Connectors and sleeves can be purchased separately based on existing inventory.

Customized Hose Outer Layer

Based on EN853:2015, and according to the methods specified in GB/T 12721-2007/ISO6945:1991, the outer layer of the Super Hercules low-bend hose series was subjected to a reciprocating abrasion test at a frequency of 1.25 Hz under a gravity of 25 N. Comparing the mass loss of the outer layer material after 2000 cycles, the outer layer of the Super Hercules low-bend hose was classified into the following three types:

Standard outer layer

Eliminates hose crimping problems caused by excessive or insufficient adhesive stripping.

Abrasion Resistance (AR) Outer Layer

The wear-resistant mass loss is 1/7 that of the standard outer layer, meaning its wear resistance coefficient is 7 times that of the standard outer layer. The wear-resistant AR outer layer hose is suitable for relatively harsh operating environments.

Super Abrasion Resistance SAR Outer Layer

Employing a UHMWPE outer layer, the outer layer material exhibits zero mass loss after 2000 cycles. This ultra-abrasion-resistant SAR outer layer hose is suitable for extremely harsh operating environments.