2661-12 Aeroquip Hydraulic Hose for Crane: Global Buyer's Guide 2026
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The 2661-12 Aeroquip hydraulic hose is a -12 dash size (3/4 in nominal bore) hose used to carry pressurised hydraulic fluid on crane boom, outrigger, winch and slew circuits. It is terminated with Aeroquip crimp fittings — typically JIC female swivel ends with 1-1/16"-12 threads — and must be matched to the crane's rated working pressure before installation.
What is a 2661-12 Aeroquip hydraulic hose?
A 2661-12 Aeroquip hydraulic hose is a -12 dash size (3/4 in / 19 mm nominal bore) flexible hose from the Aeroquip 2661 family, engineered for high-pressure fluid power service on mobile and industrial cranes. The "-12" suffix denotes the dash size, which fixes both the hose bore and the matching crimp fitting series.
Aeroquip (now part of Danfoss Power Solutions) is one of the most widely specified hydraulic hose and fitting brands in crane OEM build lists, so 2661-12 assemblies are commonly found on telescopic boom lifts, truck cranes, crawler cranes and marine deck cranes. Because the hose is crimped rather than reusable, the fitting selection is as important as the hose itself.
How does a 2661-12 hose assembly work on a crane?
The hose carries hydraulic fluid between the pump, control valve bank and actuators — boom cylinders, outrigger cylinders, winch motors and slew motors. Each end is terminated with a crimped Aeroquip fitting that adapts the hose to a threaded port or JIC male nipple on the crane's manifold.
On a -12 hose, the standard JIC thread is 1-1/16"-12 UNF. A 90° elbow fitting is often used where the hose must route around a boom section or frame member without exceeding the minimum bend radius. Straight fittings are used where the hose runs parallel to the port axis.
Because crane circuits are subject to pressure spikes, shock loads and continuous flexing, the hose and crimp must be rated for the system's peak pressure — not just the nominal working pressure shown on the crane's data plate.
2661-12 hose and fitting specification table
| Attribute | Value | Notes |
|---|---|---|
| Hose dash size | -12 | Matches 3/4 in / 19 mm nominal bore |
| Standard JIC thread for -12 | 1-1/16"-12 UNF | Per Aeroquip -12 JIC fitting range |
| Typical fitting style | 90° elbow, crimp genderless | Used to route around obstructions |
| Fitting material | Steel | Zinc-plated carbon steel |
| Connection type | JIC female swivel x crimp | Permanent crimp attachment |
| Primary application | Crane hydraulic circuits | Boom, outrigger, winch, slew |
| Currency for quoting | USD | Export quotes available |
Note: working pressure, temperature range and bend radius are hose-family specific and should be confirmed against the Aeroquip 2661 series datasheet for your exact build. 3G Electric will confirm these values on request before shipping.
Which Aeroquip crimp fitting suits your 2661-12 hose?
Fitting choice is driven by three things: dash size, thread type and routing geometry. For a -12 hose you need a -12 crimp fitting; using a -10 or -16 fitting will not seal correctly and will fail under pressure.
Thread type must match the port. JIC (SAE J514) is the most common on North American and globally exported crane equipment. BSPP and inverted flare variants exist in the Aeroquip range for other markets — always confirm the port thread before ordering.
Routing geometry decides elbow vs straight. A 90° elbow is used where the hose approaches the port at right angles; a straight fitting is used where the hose runs in line with the port.
Types and applications in Worldwide crane service
Crane fleets operating internationally typically run a mix of dash sizes. A -12 hose is common on mid-size boom and outrigger circuits, while -8 and -16 hoses appear on smaller pilot lines and larger main pressure lines respectively.
Applications include:
- Telescopic boom extension and retraction cylinders
- Outrigger beam and jack cylinders
- Winch and hoist motor supply and return lines
- Slew and swing motor circuits
- Load-sensing and pilot pressure lines
Because cranes are often exported between regions, buyers in Worldwide markets frequently need fittings that match a machine originally built to SAE, DIN or JIS conventions. 3G Electric supplies across these conventions and can cross-reference the port thread from a photo or drawing.
How to select a 2661-12 hose and fitting set
- Confirm dash size. Verify the hose is -12 (3/4 in / 19 mm bore) — check the layline printed on the existing hose.
- Identify the port thread. Measure or reference the port: 1-1/16"-12 UNF for JIC -12. Do not assume.
- Choose the fitting geometry. 90° elbow for tight routing, straight for in-line runs.
- Check working pressure. Compare the hose and crimp rating against the crane's relief valve setting, including spike margin.
- Confirm temperature and fluid compatibility. Mineral hydraulic oil is standard; confirm for bio-oils or fire-resistant fluids.
- Verify bend radius and routing. Exceeding minimum bend radius shortens hose life dramatically.
- Plan the crimp. Crimped assemblies require the correct die and crimp specification — 3G Electric can supply matched hose and fitting sets.
Product selection ladder: Aeroquip crimp fittings for crane hose
The table below compares Aeroquip crimp fittings across dash sizes, from smaller pilot-line sizes up to larger main-line sizes. Use it to identify the fitting that matches your 2661-12 hose and adjacent circuits.
| Fitting | Dash size | Thread | Geometry | Typical crane use |
|---|---|---|---|---|
| AEROQUIP 90° Elbow JIC Female Crimp Fitting, -8 | -8 | 3/4"-16 | 90° elbow | Pilot and control lines |
| AEROQUIP Straight JIC Female Swivel Crimp Fitting, -10 | -10 | 7/8"-14 | Straight | Return and medium-pressure lines |
| AEROQUIP 90° Elbow JIC Female Crimp Fitting, -12 | -12 | 1-1/16"-12 | 90° elbow | 2661-12 hose — boom and outrigger circuits |
| AEROQUIP 90° Elbow JIC Female Swivel Crimp Fitting, -16 | -16 | 1-5/16"-12 | 90° elbow | Main pressure lines on larger cranes |
Step up from -8 to -12 when flow demand rises or when the circuit is a main pressure line rather than a pilot line. Step up to -16 only when the crane's main pressure circuit is sized for it — oversizing a fitting on a -12 hose is not possible, since the crimp must match the hose dash size exactly.
Why source 2661-12 hose and fittings from 3G Electric
3G Electric stocks 266 products across hydraulic, pneumatic, electrical and fluid-power categories, backed by 35+ years of industrial supply experience. We interpret the requirement — dash size, thread, geometry, pressure class — and supply the correct Aeroquip hose and crimp fitting combination rather than a near-match.
For Worldwide buyers we provide export documentation, incoterms-neutral supply, and cross-market support for SAE, DIN and JIS port conventions. Quotes are issued in USD. Whether you need a single -12 elbow fitting or a full crane hose kit, our technical team will confirm the specification before dispatch.
Key takeaways
- The 2661-12 Aeroquip hose is a -12 dash (3/4 in / 19 mm bore) hose for crane hydraulic circuits.
- Match it with -12 Aeroquip crimp fittings using 1-1/16"-12 UNF JIC threads.
- Confirm working pressure against the crane's relief setting, including spike margin.
- 3G Electric supplies matched hose and fitting sets with Worldwide export documentation.
Contact 3G Electric for a quote on 2661-12 Aeroquip hose, compatible crimp fittings, or sizing assistance for your crane fleet. Send us the layline text, port thread or a photo, and we will confirm the correct assembly.
