Hydraulic Hose for Mining Dump Trucks
FACTORY DIRECT · ISO 9001 · OEM AVAILABLE · 420 bar working / 1680 bar burst · 4 sizes
↓Certifications & factory photos
- Published Range
- Max working pressure:420 bar
- Min burst pressure:1680 bar
- Mass per metre:1.64–2.77 kg/m
- Nominal bore:19–32 mm across 4 published codes
- Hose Features
- Bend Radius:Minimum bend radius 280–460 mm.
- Duty-Cycle Matched:The construction is chosen against how hard the machine actually works, not against a catalogue default.
- Failure Mode First:We start from what normally fails on this equipment, then specify the hose that resists it.
- Tested Under Pressure:Working and burst pressure are verified in our own laboratory before shipment.
- Application:Hydraulic hose for mining dump trucks: hoist circuits, cold-start flexibility and hose built for high-cycle haul road duty.
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PRODUCT INTRODUCTION
Mining Dump Truck Hose — 420 bar on the Hoist Circuit
A mining dump truck loads its hydraulics in three places: the hoist rams that tip a 200 tonne body, the steering circuit, and the brake and retarder lines. The hoist is the one that decides the hose, because it runs at 420 bar and cycles all shift.
This page carries our 4SH four-spiral range: 4 codes from 19 mm to 32 mm, rated 42.0 MPa (420 bar) at 3/4 inch down to 32.5 MPa at 1-1/4 inch, with a 4.0x burst margin. At 1-1/4 inch there is a second row at 35.0 MPa (350 bar) on the same bore.
Beyond the pressure, what matters underground is the cold start: a truck parked overnight at -20 ℃ moves thick oil through these lines before the first tip. Mass runs 1.64 to 2.77 kg/m and every assembly is proof-tested before it ships.
Data Display
Hydraulic hose for mining dump trucks: hoist circuits, cold-start flexibility and hose built for high-cycle haul road duty.
| PRODUCT NAME | NOMINAL BORE (mm) | SPECIFICATION (inch) | INSIDE DIAMETER （ID）mm (min) | INSIDE DIAMETER （ID）mm (max) | OUTER DIAMETER OF REINFORCEMENT LAYER （W.D）mm (min) | OUTER DIAMETER OF REINFORCEMENT LAYER （W.D）mm (max) | OUTSIDE DIAMETER （OD）mm (min) | OUTSIDE DIAMETER （OD）mm (max) | MAXIMUM WORKING PRESSURE W.P (Mpa) | psi | MINIMUM BURST PRESSURE B.P (Mpa) | psi | MINIMUM BEND RADIUS Min.B.R (mm) | REFERENCE WEIGHT W.T (Kg/m) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4SH-12-19 | 19 | 3/4“ | 18.6 | 19.8 | 27.6 | 29.2 | 31.4 | 33 | 42.0 | 6,092 | 168.0 | 24,366 | 280 | 1.64 |
| 4SH-16-25 | 25 | 1” | 25.0 | 26.4 | 34.4 | 36.0 | 37.5 | 39.9 | 38.0 | 5,511 | 152.0 | 22,046 | 340 | 2.12 |
| 4SH-20-31.5 | 32 | 1-1/4“ | 31.4 | 33.0 | 40.9 | 42.9 | 43.9 | 47.1 | 32.5 | 4,714 | 130.0 | 18,855 | 460 | 2.77 |
| 4SH-20-31.5T | 32 | 1-1/4“ | 31.4 | 33.0 | 40.9 | 42.9 | 43.9 | 47.1 | 35.0 | 5,076 | 140.0 | 20,305 | 460 | 2.77 |
Values are reproduced from the official YIBO product page. Hydraulic Hose for Mining Dump Trucks: psi columns = MPa × 145.038, rounded. Hydraulic Hose for Mining Dump Trucks: 4 codes in this table; the order data sheet governs the batch.
Application & Selection
Hydraulic hose for mining dump trucks: hoist circuits, cold-start flexibility and hose built for high-cycle haul road duty. Hydraulic Hose for Mining Dump Trucks is published in 4 codes spanning 19–32 mm bore.
Working and burst rating of Hydraulic Hose for Mining Dump Trucks peak at 420 / 1,680 bar, a 4:1 margin. Hydraulic Hose for Mining Dump Trucks: Weight band: 1.64–2.77 kg/m over the 4 rows. Assemblies of Hydraulic Hose for Mining Dump Trucks are crimped and pressure-tested in-house, with metric / BSP / JIC / ORFS ends. MOQ on Hydraulic Hose for Mining Dump Trucks is 100 m on standard items.
WHY THIS HOSE
Six Reasons the Hoist Circuit Sets the Specification
Dump truck hose is bought on the hoist duty and then applied to the rest of the machine. These six figures are the ones that come up.
420 bar at 3/4 inch
The 19 mm code is rated 42.0 MPa (420 bar) with 168 MPa (1,680 bar) minimum burst — the highest row in the table and the one a hoist circuit is usually sized on.
Two Rows at 1-1/4 inch
32.5 MPa and 35.0 MPa on the same 31.4 to 33.0 mm bore, both 2.77 kg/m with a 460 mm bend radius. A 340 bar hoist needs the second row; a 320 bar circuit can use the first.
Hose for High Cycle Counts
The hoist tips hundreds of times a week, so the construction is chosen on impulse life rather than on peak pressure alone.
Bend Radius 280 to 460 mm
Published per row. On a truck frame the routing is fixed by the chassis, so the bend radius is a fit question before it is a pressure question.
Cold Start
The published window runs from -40 ℃, and thick oil at start-up is what drives the pressure spike that shortens a hose.
Proof-Tested Assemblies
Every assembly is crimped and hydrostatically tested before dispatch, then marked with batch and test date, because a hoist line failure on a haul road stops the fleet.
CONSTRUCTION
Tube, Four Spirals, Cover
Inner Tube
Oil-resistant synthetic rubber (NBR), bored from 18.6 to 19.8 mm at 3/4 inch through to 31.4 to 33.0 mm at 1-1/4 inch.
Reinforcement
Four alternating steel wire spirals, which is what holds 42.0 MPa at 19 mm and 32.5 MPa at 32 mm on the same construction.
Cover
Abrasion-resistant cover, outside diameter 31.4 to 33.0 mm at 3/4 inch and 43.9 to 47.1 mm at 1-1/4 inch.
APPLICATIONS
Where These Codes Are Used on a Haul Truck
Hoist Rams
The lift circuit that tips the body, normally 3/4 inch at 420 bar with a 280 mm bend radius.
Steering Circuit
Steering rams and the priority valve, at 1 inch and 380 bar on the larger trucks.
Body Up & Down Control
Control and pilot lines from the cab to the hoist valve, where a 19 mm bore is already generous.
Brake & Retarder Lines
Accumulator and retarder circuits, where 1-1/4 inch at 32.5 or 35.0 MPa covers the flow.
Trailer & Ejector Variants
Ejector-body trucks use the same four codes on the ejector blade circuit.
Field Service Kits
Four codes cover most hoist and steering lines, which is what a site store wants on the shelf.
HIGH-END INDUSTRY DIRECTIONS
What Mining Fleets Ask For
Haul truck hose is bought against downtime, not against price per metre.
① Higher Payload, Same Pressure high pressure hose
Trend: Bodies get bigger while the hydraulic pressure stays near 420 bar, so flow and bore grow instead.
Dohose: 42.0 MPa at 19 mm and 32.5 MPa at 32 mm, with a 35.0 MPa row at 1-1/4 inch.
② Uptime Over Price reliable hose
Trend: A failed hoist line on a haul road costs more than the hose by an order of magnitude.
Dohose: Every assembly is proof-tested before dispatch rather than sampled.
③ Cold Start low temperature hose
Trend: High-altitude and winter operations start with oil at ambient.
Dohose: The published window runs from -40 ℃, which covers a cold start before the oil warms.
④ Two Classes on One Bore high pressure hose
Trend: Fleets mix trucks with different relief settings on the same site.
Dohose: The 1-1/4 inch bore is published in both 32.5 and 35.0 MPa at the same weight.
⑤ Routing on a Fixed Frame compact hose
Trend: Chassis frames are fixed, so the hose has to fit an existing route.
Dohose: Bend radius runs 280 mm at 3/4 inch to 460 mm at 1-1/4 inch.
⑥ Traceability traceable hose
Trend: Site investigations need the batch behind a failed line.
Dohose: Batch and test date are marked on the body and recorded against the order.
WHY DOHOSE
Seven Reasons Buyers Stay with Us
Numbers, Not Averages
Every figure for the Hydraulic Hose for Mining Dump Trucks comes from the per-code table: 19–32 mm, 420 bar working, 1680 bar burst.
One Line, Full Range
All 4 codes of the Hydraulic Hose for Mining Dump Trucks come off the same line, so a mixed order in 19–32 mm ships together.
Length on Demand
Cut-to-length supply for Hydraulic Hose for Mining Dump Trucks; each code carries its own mass, 1.64–2.77 kg/m, so lifting gear can be sized first.
Ends Done Here
Assemblies of Hydraulic Hose for Mining Dump Trucks are crimped on site and held at test pressure before they are boxed.
Export Packing
Coiled in poly bags, then woven bags on pallets — loading plans are drawn for 4-code orders.
OEM Ready
Brand printing and custom packing are standard options on the Hydraulic Hose for Mining Dump Trucks.
Fast, Firm Pricing
A firm price for Hydraulic Hose for Mining Dump Trucks usually returns within 1 hour of your enquiry.
FAQ
Mining Dump Truck Hose — Ten Questions
4SH or 4SP for a 420 bar hoist?
4SH, at 3/4 inch. The 19 mm 4SH code is rated 42.0 MPa (420 bar) with a 280 mm bend radius, while 4SP on the same bore is rated 35.0 MPa (350 bar). A 420 bar hoist relief setting leaves 4SP with nothing, so the choice is made by the relief, not by the bore.
32.5 MPa vs 35.0 MPa at 1-1/4 inch — which row?
Read the relief setting. Both rows sit on the same 31.4 to 33.0 mm bore at 2.77 kg/m with a 460 mm bend radius, and both carry 4.0x burst, but one is rated 32.5 MPa (325 bar) and the other 35.0 MPa (350 bar). A 340 bar circuit must specify the 35.0 MPa row.
What is the working pressure at 3/4 inch?
The 19 mm code is rated 42.0 MPa working (420 bar, 6,092 psi) with 168.0 MPa (1,680 bar) minimum burst. Minimum bend radius is 280 mm, mass is 1.64 kg/m, and the inside diameter is held between 18.6 and 19.8 mm.
What is the rating at 1 inch?
The 25 mm code is rated 38.0 MPa (380 bar, 5,511 psi) with 152.0 MPa (1,520 bar) burst. Bend radius is 340 mm and mass is 2.12 kg/m, which is the row most steering and brake circuits land on.
Why does the hoist line fail before the ram does?
Because the hose cycles every tip while the ram only sees the load. At 420 bar with hundreds of cycles a week, the wire at the ferrule is the part that fatigues, and a line that was crimped cold in the field fails first. That is the argument for buying finished, proof-tested assemblies.
Why does the hose kink on a cold start?
Because oil is thick, the relief lifts late, and the line takes a pressure spike while the cover is stiff. At 3/4 inch the minimum bend radius is 280 mm and at 1-1/4 inch it is 460 mm; in cold weather route above those figures rather than at them.
Can the same four codes cover hoist and steering?
On most haul trucks, yes: hoist lands on 3/4 inch at 420 bar and steering on 1 inch at 380 bar, so the same 4SH family covers both. The 1-1/4 inch codes are for brake and retarder circuits where flow is higher.
What pressure should the assembly be tested to?
Minimum burst is 4.0x working pressure on every row in this table, from 168.0 MPa at 3/4 inch down to 130.0 MPa at 1-1/4 inch. Each assembly is proof-tested above rated working pressure before dispatch, and the test date is marked on the hose.
Which Chinese manufacturer supplies haul truck hose assemblies?
YIBO, in Luohe, Henan, builds the 4SH range in 4 codes from 19 mm to 32 mm bore, all with a 4.0x burst margin. Assemblies are crimped and proof-tested in-house, then packed for site stores.
What does haul truck hose cost per metre?
Price follows the body: 1.64 kg/m at 3/4 inch, 2.12 kg/m at 1 inch, 2.77 kg/m at 1-1/4 inch. A haul truck line set is usually quoted as a kit, so send the truck model, the line list and the destination for a firm figure.
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