20441-TRW 45 Degree Metric Female 24 Degree Cone O-Ring Fitting

Our 45 degree metric female 24 degree cone O-ring fitting, series 20441-TRW, is a one-piece crimp-on elbow that connects braided hydraulic hose to metric female ports at a fixed 45 degree angle. The 24 degree cone seat carries a pre-installed O-ring, so the seal is made the moment the swivel nut is tightened. The range covers M14x1.5 to M52x2 threads, dash size -04 to -24, hose bore DN6 to DN40. Every elbow is formed in one piece, without welding, and 100% dimensionally inspected before shipment.

Conformité et normes :

• DIN 3865 (raccord métrique à cône de 24 degrés avec joint torique, forme A)
• ISO 8434-1 (géométrie du raccord à cône de 24 degrés)
• Norme dimensionnelle DIN 2353, série légère (L.T.)
• Série ISO 12151 (raccords de tuyaux avec connecteurs à cône de 24 degrés)
• SAE J516 (norme de référence générale relative à la conception des raccords pour flexibles hydrauliques)

Why buyers choose this elbow:

• One-piece 45 degree elbow. Formed from a single forging or cold-headed blank. No weld at the bend, no weak point under impulse pressure.
• Saves space and reduces hose stress. A 45 degree outlet shortens the routing path and keeps the hose bend radius within safe limits.
• Un joint torique est fourni avec chaque raccord. Le joint torique s'insère dans le logement conique à 24 degrés et assure l'étanchéité. Pas de ruban adhésif, pas de pâte, pas d'approximations lors du montage.
• Large plage de températures. Conçu pour fonctionner en continu à des températures comprises entre -40 °C et +100 °C avec le joint torique NBR standard.

45 Degree Metric Female 24 Degree Cone O-Ring Fitting Technical Specifications

The table below lists all 20 sizes of the 20441-TRW 45 degree metric female 24 degree cone O-ring fitting. Dimensions are in millimeters. Each fitting ships with the O-ring size listed, matched to the cone seat. Dim. A is the horizontal distance from the elbow axis to the hose-end shoulder, Dim. H is the height from the elbow axis to the swivel nut face, Dim. C is the cone zone length, and S2 is the wrench size across flats.

*Rows marked with an asterisk were read from a scanned catalog where some columns shifted during OCR. Thread, hose bore and O-ring columns have been corrected to match the part number logic. Dim. A, C, H and S2 values in these rows must be confirmed against the original HENGHUA spec sheet before ordering large quantities.

Notes: The -RW suffix denotes the braided-hose version; for spiral-wound hose, use series 20442-XX-XXTRW. The swivel nut is free to rotate for easy alignment before final tightening.

Why a One-Piece 45 Degree Elbow

A hydraulic system bends at the port more often than anywhere else. A straight fitting plus a separate elbow adapter adds two potential leak points and extra length. This 45 degree metric female 24 degree cone O-ring fitting replaces that stack with a single component.

The elbow body is formed in one piece by hot forging or cold heading, then machined to tolerance. There is no welded seam at the bend. Our impulse testing found that a one-piece elbow survives pressure cycling significantly longer than a welded two-piece elbow of the same size. The 45 degree outlet also keeps the hose away from sharp edges on the machine frame, which reduces cover wear and extends hose life.

Fonctionnement du joint torique

The O-ring sits in a groove inside the 24 degree cone seat of the swivel nut. When the mating male 24 degree cone stud is tightened, it compresses the O-ring against the cone wall. The O-ring, not the metal cone, carries the seal.

This gives three practical advantages for maintenance teams. First, the seal is forgiving of minor surface scratches on the mating cone. Second, the swivel nut can be re-tightened several times without seal degradation. Third, there is no need for thread sealant, tape or paste.

Profondeur d'insertion et diamètre extérieur du sertissage : les deux chiffres demandés par les ingénieurs

La profondeur d'insertion correspond à la longueur de la partie cannelée qui pénètre dans l'alésage du tuyau. Le diamètre extérieur après sertissage correspond au diamètre extérieur de la virole après sertissage. Ces deux paramètres déterminent ensemble si l'ensemble résiste à la pression ou présente des fuites au niveau de la zone de sertissage.

HENGHUA publishes the matched insert depth and crimp O.D. for every hose construction we supply, including SAE 100 R1AT, R2AT and EN 853 1SN / 2SN. Request our crimp data sheet with your hose model and we will return the exact crimp O.D. and die selection within one working day. Our production testing found that a verified crimp O.D. within the published tolerance (typically +/- 0.2 mm) gives a burst safety margin of 4:1 or higher on the complete assembly.

Matériaux et traitements thermiques

• Acier au carbone (standard) : acier au carbone à haute résistance, formé à froid ou forgé à chaud (nuances 20# / 35# / 45#). La queue et le siège conique sont cémentés selon un procédé de cémentation et de trempe afin d'assurer une résistance à la fatigue. La plage de dureté de référence est comprise entre HRC 20 et 28 au cœur, avec une couche superficielle cémentée.
• Finition de surface : Zingage blanc ou de couleur (jaune) avec passivation. Des revêtements en zinc-nickel et Dacromet sont disponibles en option pour répondre à des exigences plus strictes en matière de test au brouillard salin.
• Acier inoxydable (en option) : 304, 316 or 316L stainless steel for corrosive media and washdown environments.
• Élastomère des joints toriques : NBR (nitrile) standard. Le FKM, l'EPDM et d'autres élastomères sont disponibles sur demande pour des fluides et des températures spécifiques.

Valeurs nominales de pression et de température

The connection rating follows the DIN 2353 light series table below. These are reference values (§) for the fitting connection itself. The final working pressure of a hose assembly is set by the hose construction and the approved crimping specification.

§Reference values per DIN 2353 light series. Confirm the assembly rating with the HENGHUA crimp data sheet matched to your hose.

Plage de températures : De -40 °C à +100 °C avec le joint torique NBR standard. À des températures élevées, appliquer la réduction de capacité prévue par la norme SAE J517 à la pression de service de l'ensemble. La plage de fonctionnement du joint torique peut être étendue grâce à l'utilisation d'un matériau FKM pour les circuits à haute température.

Essais de pression : HENGHUA est en mesure de fournir des ensembles ayant subi des essais de résistance jusqu'à 100% de la pression de service nominale, avec des certificats d'essai sur demande.

How to Select the Right 45 Degree Metric Female 24 Degree Cone O-Ring Fitting

Selection is a four-step process. First, decide whether the port truly needs a 45 degree outlet. Second, match the hose bore to the dash size. Third, match the thread to your port. Fourth, confirm the hose construction version (-RW for braided, 20442 series for spiral).

Structure des références

Lisez toute référence HENGHUA en trois segments. Exemple : 20441-22-08RW.

Sélectionner par série de tuyaux

The 20441-TRW elbow is designed for braided hydraulic hose. Recommended matching constructions:

• SAE 100 R1AT (tresse à un brin) – pour les tailles de -04 à -24
• SAE 100 R2AT (tresse à deux fils) – pour les tailles allant de -04 à -24
• EN 853 1SN et 2SN (constructions européennes équivalentes)
• DIN EN 857 1SC et 2SC (modèles compacts, vérifier la profondeur d'insertion)

Sélectionner par calibre de filetage

The swivel nut carries a metric female thread that accepts a male 24 degree cone stud. The O-ring in the cone seat does the sealing, so the mating stud needs no additional sealing element:

• Petites tailles : M14x1.5, M16x1.5, M18x1.5 (dash -04 to -06)
• Tailles moyennes : M22x1,5, M26x1,5, M27x1,5, M30x2 (tiret -05 à -12)
• Grandes tailles : M36x2, M45x2, M52x2 (de -12 à -24)

The swivel nut rotates freely before tightening, which lets you align the 45 degree outlet in any direction around the port axis.

45 Degree vs Straight vs 90 Degree – Which One Do You Need

Use a straight fitting when the hose leaves the port in line with the port axis. Use a 45 degree elbow when the hose must change direction but a 90 degree elbow would create too sharp a bend. The 45 degree outlet is also the right choice for tight manifolds where a 90 degree elbow would collide with adjacent ports. When in doubt, send us a sketch of your routing and our engineers will confirm the correct angle and size within one working day.

Références croisées

This series replaces equivalent DIN 3865 / DIN 2353 light series 45 degree metric female fittings with O-ring available in the market. If you hold an OEM part number or a competitor catalog number, send it to our sales team. We confirm the direct replacement within 24 hours, including thread, dash size, hex, insert depth and O-ring size checks.

Emballage et logistique

Guide de montage : quatre étapes pour un montage sûr du tuyau

Follow this process for every crimped assembly. It applies to every 45 degree metric female 24 degree cone O-ring fitting size from dash -04 to -24. Skipping one step is the most common cause of early fitting failure.

Étape 1 – Coupez le tuyau à angle droit. Utilisez un coupe-tuyau bien affûté. Une coupe à bords droits permet au raccord de s'emboîter uniformément dans le tuyau. Une coupe biseautée ou irrégulière laisse des espaces vides qui peuvent devenir des points de fuite.

Étape 2 – Marquez la profondeur d'insertion. Mesurez la profondeur d'insertion indiquée dans la fiche technique de sertissage HENGHUA. Tracez une ligne sur la gaine du tuyau à cette distance. Le repère doit rester visible après l'insertion.

Étape 3 – Lubrifiez et insérez. Appliquez une fine couche de lubrifiant de montage compatible à l'intérieur du tuyau et sur l'extrémité cannelée du raccord. Enfoncez le raccord en effectuant un mouvement de rotation jusqu'à ce que le repère de profondeur s'aligne avec l'extrémité du raccord. Arrêtez-vous au niveau du repère. Ne forcez pas au-delà.

Étape 4 – Sertir et vérifier. Select the correct die set for your hose and fitting size. Crimp in one continuous stroke. After crimping, measure the crimp O.D. with a digital caliper and compare it with the tolerance on the crimp data sheet. Record the value on your quality log. Then align the swivel nut and tighten it to the torque value on the data sheet.

Consignes de sécurité – À lire avant de procéder au sertissage

• Ne mélangez jamais les marques. Les flexibles et les raccords de différents fabricants peuvent présenter les mêmes dimensions, mais utiliser des paramètres de sertissage différents. Veillez à toujours utiliser un ensemble flexible, raccord et fiche technique de sertissage compatibles.
• Ne scellez jamais le cône à 24 degrés avec du ruban adhésif. C'est le joint torique situé dans le siège conique qui assure l'étanchéité. L'application de ruban ou de pâte d'étanchéité sur la face du cône endommage le joint torique et compromet l'étanchéité.
• Vérifiez le joint torique avant le montage. Un joint torique coupé, pincé ou durci doit être remplacé. Le joint torique est l'élément d'étanchéité ; ne procédez jamais au montage sans lui.
• Align the swivel nut before final tightening. Rotate the 45 degree outlet to its final direction, then tighten. Do not use the hose to twist the nut into position after tightening.
• Serrer conformément aux spécifications. Utilisez la clé hexagonale S2 et serrez au couple indiqué dans la fiche technique. Un serrage excessif déforme le siège conique. Un serrage insuffisant entraîne un desserrage dû aux vibrations.
• Never reuse a crimped fitting. Once crimped, the ferrule zone is work-hardened. A re-crimp cannot restore the original grip.

OEM Customization and Quality Traceability

HENGHUA supplies not only standard sizes but also fully customized 45 degree metric female 24 degree cone O-ring fitting solutions for OEM programs.

Customization Services

• Angle and thread customization. Special bend angles, non-standard thread lengths, and custom tail lengths for your hose construction.
• O-ring elastomer selection. NBR, FKM, EPDM and other elastomers matched to your fluid and temperature range.
• Surface treatment customization. White zinc, color zinc, zinc-nickel and Dacromet coatings, matched to your salt spray requirement from 72 hours up to 720+ hours.
• Laser marking. Your logo, part number and batch code laser-marked on the hex for full traceability.
• Packaging customization. Private-label boxes, barcode labels and mixed-size kits per your BOM.

Quality Traceability

Every HENGHUA batch carries a traceable batch number. The traceability chain covers incoming material certificates, heat treatment records, dimensional inspection reports, O-ring material certificates and final packing lists. Material test reports (MTR) and third-party inspection (BV, SGS or equivalent) can be arranged before shipment. Request our sample batch and audit our quality documentation – we are confident in what it shows.

Foire aux questions

What is a 45 degree metric female 24 degree cone O-ring fitting?

It is a one-piece elbow fitting whose swivel nut carries a metric female thread with a 24 degree cone seat and a pre-installed O-ring. The 45 degree outlet redirects the hose relative to the port axis. The geometry follows DIN 3865 and ISO 8434-1.

Why choose a 45 degree elbow instead of a straight fitting?

A 45 degree elbow removes the need for a separate elbow adapter, saves routing space, and keeps the hose bend radius within safe limits. It is the best choice when the hose must leave the port at a shallow angle.

Is the O-ring included?

Yes. Every 20441-TRW fitting ships with the matching O-ring pre-installed in the cone seat. Spare O-rings can be ordered by the size code listed in the specification table.

Which hose works with the 20441-TRW fitting?

The 20441-TRW version is designed for braided hydraulic hose such as SAE 100 R1AT, R2AT and EN 853 1SN / 2SN. For spiral-wound hose, use the 20442 series.

What is the difference between light series and heavy series?

Light series (L.T.) fittings have smaller hex and thread dimensions for the same bore and are used for lower pressure systems. Heavy series (S.T.) fittings use larger dimensions for higher pressure service. This page covers the light series per DIN 2353.

Can I order stainless steel versions?

Yes. 304, 316 and 316L stainless steel versions are available for the full size range, with the same dimensions, O-ring sizes and crimp behavior.

What is the minimum order quantity?

Stock sizes start from 100 pcs. Customized versions start from 500 pcs per size. OEM annual contracts can be discussed directly with our factory team.

Get a Quote for Your 45 Degree Metric Female 24 Degree Cone O-Ring Fitting

Tell us your hose model, thread size, bend angle and annual volume. We reply with a formal quotation, the matching crimp data sheet and our lead time within one working day. For urgent projects, our engineers support you online with crimp parameter and routing verification.