Excavators in Indonesia work in quarry, mining, road construction, plantation, river work and general contractor sites. The same excavator may need different hydraulic hose families depending on whether the line is a medium-pressure return line, a boom cylinder line with frequent impulse, or a severe-duty high-pressure circuit exposed to abrasion.
Quick Answer: When to Use R2, 4SP or 4SH
| Hose family | Typical standard | Best use on excavators | Selection note |
|---|---|---|---|
| Two-wire braided hose | SAE 100 R2 / EN 853 2SN | General high-pressure lines, pilot or auxiliary circuits where OEM pressure allows | Good flexibility and practical cost; do not use when pressure surge exceeds hose rating. |
| Four-spiral hose | EN 856 4SP | Boom, arm, bucket and attachment lines with higher impulse cycles | Better impulse resistance than common braided hose; check bend radius and fitting series. |
| Four-spiral heavy pressure hose | EN 856 4SH | Heavy excavators, rock breaking, mining attachments and severe pressure surge positions | Use when the circuit demands higher pressure class or severe-duty margin. |
Pressure Rating Comparison
| Dash size | R2 / 2SN general range | 4SP general range | 4SH general range | Practical comment |
|---|---|---|---|---|
| -06 to -08 | High pressure, flexible routing | Higher impulse margin | Often higher pressure for severe service | Small excavator lines may still use R2 if OEM marking confirms it. |
| -10 to -12 | Suitable for many mobile lines | Common for boom and arm high-pressure lines | Used on heavy equipment and pressure surge circuits | Confirm machine pressure and old hose marking before changing family. |
| -16 and above | Lower pressure than spiral families in many sizes | Heavy mobile hydraulics | Severe high-pressure heavy equipment | For large machines, spiral hose is often safer for main pressure lines. |
Equipment Operating Conditions Table
| Excavator position | Working condition | Recommended starting point | Failure risk to check |
|---|---|---|---|
| Boom cylinder line | Repeated lifting, high impulse, outdoor abrasion | 4SP or 4SH depending on OEM pressure | Cover rubbing, pressure spikes, tight bend radius. |
| Bucket / arm line | Frequent movement, rock impact, mud | 4SP / 4SH for heavy-duty; R2 for moderate circuits | Twisting during installation and external abrasion. |
| Hydraulic breaker line | Strong impulse and vibration | 4SH or severe-duty spiral hose after pressure check | Early crimp leakage, fitting loosening, temperature rise. |
| Pilot or auxiliary line | Lower flow and compact routing | R2 / 2SN or compact hose if specification allows | Wrong thread or over-bending in narrow routing. |
Common Mistake: Replacing by Size Only
A hose with the same inside diameter is not automatically equal. Buyers should confirm working pressure, impulse demand, old hose marking, fitting type, ferrule type, routing and total assembly length. Replacing a 4SP or 4SH line with a two-wire braided hose can create early burst risk if the circuit pressure is too high.
Quotation Checklist for Indo Hydraulics
- Excavator brand and model.
- Old hose marking such as SAE 100 R2, EN856 4SP or EN856 4SH.
- Inside diameter or dash size.
- Overall assembly length and fitting angle.
- Clear photos of both fitting ends and sealing faces.
- Application position: boom, arm, bucket, breaker, travel, pilot or attachment line.
Related Products
Braided hydraulic hose, spiral hydraulic hose and hose fittings and ferrules can be selected together for safer excavator hose assemblies.
Send excavator hose photos to WhatsApp: Sigit +62 821-1900-0383