DKO Distributor

At the heart of every high-performance agricultural machine or road implement, the integrity of the hydraulic system is non-negotiable. Any connection failure can lead to costly downtimes, productivity losses, and safety risks.

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This is where Helesul DKO (Double Cone O-ring) hydraulic adapters stand out as the strategic choice for manufacturers and operators who refuse to compromise on reliability, delivering a robust solution built on versatility, superior sealing, and global compatibility.

Technical Details
Aplicaciones
Dimensions Table (DKO)

Technical Details

Standards met: DIN 2353 (L, S) / ISO 8434-1;
Outer diameters: 6 mm – 42 mm (metric tubes);
Maximum operating pressure: 420 bar (6,000 PSI);
Operating temperature: -40°C to +120°C;
Body material: carbon steel;
Surface finish: trivalent zinc plating;
O-ring: NBR 90 Shore A;
Certification: ISO 9001.

Aplicaciones

Cosechadoras y pulverizadoras agrícolas

En circuitos de barras articuladas y comandos hidráulicos expuestos a vibración constante y terreno irregular, los adaptadores hidráulicos DKO mantienen un sellado estable, mitigan la contaminación del suelo por aceite y reducen intervenciones correctivas. El sellado doble tolera ciclos rápidos y picos de presión típicos de maniobras en campo, preservando la eficiencia del sistema.

Tractores e implementos de preparación del suelo

En cilindros de arados reversibles, rastrillos niveladores y subsoladores, el perfil de 24° con O-ring ofrece conexiones robustas contra impactos y cargas cíclicas, asegurando respuestas precisas de actuación. La repetibilidad del torque disminuye aflojamientos y sostiene la productividad durante jornadas prolongadas de trabajo.

Volcadores y camiones viales

En el volteo de tolvas y plataformas, las conexiones DKO contribuyen a una operación segura y continua, manteniendo sellado total a lo largo de ciclos repetitivos. La resistencia a torque elevado ayuda a preservar la integridad del conjunto tras mantenimientos e inspecciones periódicas en flotas viales.

Cortacéspedes y barredoras laterales

Expuestos a polvo, detritos y variaciones térmicas, los sistemas de brazos articulados se benefician del sellado resiliente del O-ring y del asiento cónico, reduciendo microfugas y manteniendo presión estable. Esto prolonga intervalos de mantenimiento y optimiza la disponibilidad del equipo.

Prensas y compactadoras

En máquinas con alta presión constante, el sellado doble evita pérdidas progresivas de fluido que degradan fuerza y velocidad. El resultado es un ciclo más consistente, menor consumo de aceite y mejor rendimiento por hora, especialmente en operaciones industriales continuas.

Dimensions Table (DKO)

Nominal Sizer	Tube [mm]		External Thread (d) [mm]	Internal Thread (D) [mm]
Nominal Sizer	Tube [mm]		External Thread (d) [mm]	Internal Thread (D) [mm]
	Light Series	Heavy Series
M12x1,5	6	-	12	10,4
M14x1,5	8	6	14	12,4
M16x1,5	10	8	16	14,4
M18x1,5	12	10	18	16,4
M20x1,5	-	12	20	18,4
M22x1,5	15	14	22	20,4
M24x1,5	-	16	24	22,4
M26x1,5	18	-	26	24,4
M30x2	22	20	30	27,8
M36x2	28	25	36	33,8
M42x2	-	30	42	39,8
M45x2	35	-	45	42,8
M52x2	45	38	52	49,8

FREQUENTLY ASKED QUESTIONS

Is DKO compatible with my current equipment?

In general, yes, thanks to the metric and UNF options and the use of adapters when necessary. Check the thread/port pair and the machine pattern.

What is the practical gain in the field?

Fewer microleaks, faster assembly and less rework, which translates into more available machines and lower fluid consumption throughout the life cycle.

What is the difference between DKO adapters and conventional JIC adapters?

DKO (Double Cone O-ring) adapters use a double O-ring sealing system, while traditional JICs have only one sealing cone. The DKO system reduces leaks by up to 98% and offers a useful life 3 times longer, with tolerance to multiple assembly and disassembly without loss of efficiency.

Are ORFS adapters compatible with other standards?

It is possible to interconnect ORFS to JIC, BSP or metrics using specific adapters. We recommend checking the pressure, thread and sealing profile of each transition to maintain tightness and safety.

Do I need to retighten the connections after some time of use?

Under normal conditions, no. The O-ring compensates for microsettlements. Use a torque wrench when assembling and follow the torque table by gauge. Frequent retightening may damage the O-ring.

PTFE tape or liquid sealant?

Use PTFE tape if the connection will be retightened periodically. Prefer anaerobic sealant for permanent sealing and greater vibration resistance.

In agricultural hydraulic circuits, sealing failures can bring a harvester to a halt during peak harvest and drive up maintenance costs. The dual sealing system with O-ring helps eliminate leaks even under intense vibration and pressure spikes, reducing unplanned downtime and fluid loss by up to 95% when installed according to specification.

The self-centering 24° cone speeds up assembly by up to 40% compared to conventional connections, reduces rework, and improves torque repeatability.

Helesul DKO (Double Cone O-ring) hydraulic adapters are engineered for high-reliability sealing in high-pressure hydraulic systems, combining a self-centering 24° cone with an O-ring for consistent performance in agricultural machinery and road applications.

With a robust construction, they minimize leaks, simplify assembly, and increase equipment uptime even under vibration, heavy-duty cycles, and harsh environments.

All Helesul hydraulic adapters are manufactured in accordance with ISO, SAE, and DIN standards, ensuring interchangeability, safety, and predictable performance in the field.

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