Automotive
Construction
Agriculture
Livestock
Planting
Spray
90º DKO Female Swivel Fitting - Light Series
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
- Applications
- Size Chart (DKO)
- Standards compliance: DIN 2353 (L, S) / ISO 8434-1;
- Outside diameters: 6 mm – 42 mm (metric tubes);
- Maximum operating pressure: 420 bar (6,000 PSI);
- Working temperature: -40°C to +120°C (-40°F to +248°F);
- Body material: carbon steel;
- Surface finish: trivalent zinc plating;
- O-ring: NBR 90 Shore A;
- Certification: ISO 9001.
Combine harvesters and agricultural sprayers
In boom circuits and hydraulic controls exposed to constant vibration and uneven terrain, DKO hydraulic adapters maintain stable sealing, mitigate soil contamination from oil, and reduce corrective interventions. The dual sealing system withstands rapid cycles and pressure spikes typical of field maneuvers, preserving system efficiency.
Tractors and soil preparation implements
In cylinders of reversible plows, leveling harrows, and subsoilers, the 24° profile with O-ring provides a robust connection against impacts and cyclic loads, ensuring precise actuation response. Torque repeatability minimizes loosening and sustains productivity during extended working hours.
Dump trucks and on-road trucks
In tipping operations of beds and platforms, DKO connections support safe and continuous operation, maintaining full sealing throughout repetitive cycles. High torque resistance helps preserve assembly integrity after maintenance and periodic inspections in road fleets.
Mowers and side sweepers
Exposed to dust, debris, and thermal variations, articulated arm systems benefit from the resilient O-ring sealing and conical seat, reducing microleaks and maintaining stable pressure. This extends maintenance intervals and optimizes equipment uptime.
Presses and compactors
In machines operating under constant high pressure, the dual sealing system prevents progressive fluid losses that degrade force and speed. The result is a more consistent cycle, lower oil consumption, and higher hourly output, especially in continuous industrial operations.
 |
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 |
|
In agricultural hydraulic circuits, sealing failures can bring a combine harvester to a halt during peak harvest season, resulting in high maintenance costs. The dual O-ring sealing system helps eliminate leaks even under intense vibration and pressure spikes, reducing unplanned downtime and fluid losses by up to 95% when installed according to specifications.
The 24° self-centering cone accelerates assembly by up to 40% compared to conventional fittings, 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 24° self-centering cone and O-ring for consistent performance in agricultural machinery and road applications.
With a robust construction, they reduce leaks, simplify assembly, and maximize equipment uptime even under vibration, intensive duty cycles, and harsh environments.
All Helesul hydraulic adapters are manufactured in compliance with ISO, SAE, and DIN standards, ensuring interchangeability, safety, and predictable field performance.
