Cotovelo fêmea JIC de 90°: Série 26791-RW

\

Why This JIC Female 90° Elbow Passes the Compliance Gate

A JIC female 90° elbow terminates a braided hydraulic hose with a right-angle turn and connects it to a male JIC 37° flare stud through a female 74° cone seat. The 26791-RW series from HENGHUA is a one-piece crimp elbow built to SAE J514 (ISO 8434-2), covering 27 sizes from -03 to -32 with UNF threads from 7/16″-20 to 2-1/2″-12. Every unit is cold-forged from carbon steel, heat-treated, plated, and 100% pressure tested before shipment. For OEM buyers this elbow is a compliance gate; for maintenance teams it is the fitting that solves right-angle port access without forcing the hose into a damaging bend.

• SAE J514 (ISO 8434-2) JIC female end: UNF thread with an internal 74° cone seat (37° flare), sealing metal-to-metal against a male flare stud, with no O-ring and no thread sealant required.
• One-piece crimp elbow: machined stem and ferrule seat matched to braided hose constructions; the spiral-hose version carries the 26792 series number.
• Verificação do portão OEM: full dimensional and material conformance per SAE J514, with material test reports (MTR) available for every batch.

Principais vantagens

1. JIC end rated up to 34.5 MPa (5,000 psi): per SAE J514 / ISO 8434-2, with every elbow hydrostatically tested before shipment.
2. Intervalo de funcionamento de -40 °C a +120 °C: tested across cold-start mobile equipment and hot industrial circuits without seal degradation.
3. Right-angle port access: the 90° turn lets a hose reach a side-facing port in tight spaces, so the line is not bent sharply at the connection point.
4. Opções de ensaio de névoa salina de 96 a 1000 h: zinco trivalente (96 h), zinco-níquel (720 h) ou Dacromet (1000 h), de acordo com o seu ambiente.

Especificações Técnicas

What Is a JIC Female 90° Elbow?

A JIC female 90° elbow is a crimp-on hose fitting with two jobs: it terminates a braided hose on the stem end, and it turns the hose axis at a right angle so the line can reach a port that sits at 90° to the hose run. The port end is a JIC female UNF thread with an internal 74° cone seat. The 74° figure is the included angle of the cone, with each flank 37° from the axis, which is why JIC fittings are also called JIC 37 degree flare fittings. When a male JIC 37° flare stud is tightened into the seat, the two cone faces contact metal-to-metal and the joint seals without O-rings, washers, or sealant.

The 90° angle exists for one practical reason: port access. Cylinder ends, valve block faces, and pump outlets often face sideways, and a straight hose fitting would force the hose to bend immediately at the joint. That sharp bend is where hoses fail first, because the reinforcement works against itself at every pressure pulse. A 90° elbow redirects the hose cleanly at the port, keeps the bend radius above the minimum, and lets the line run straight into the available space. On excavators, agricultural machines, and industrial equipment, this is the standard solution for right-angle connections.

When to Choose 90° Instead of 45° or Straight

• Choose a straight fitting when the port aligns with the hose run and there is clearance to swing a wrench.
• Choose a 45° elbow when the hose needs a gentle change of direction and space is moderately tight.
• Choose a Cotovelo de 90° when the port faces sideways and the hose must turn at a right angle to reach it. If a 45° elbow would leave the hose rubbing against a component or bending too sharply downstream, the 90° version is the correct call.

Dados dimensionais e roscas

Full dimension drawings with A, C, H, and S2 callouts are supplied as PDF and CAD (STEP/DWG) files. Because this is a crimp fitting, the two process-critical parameters are the hose insert depth and the crimp outside diameter; both are hose-series specific and are listed in the crimp data sheet that accompanies every order.

Tabela completa de dimensões (matriz de referências) {#by-thread-size}

Read the table with your JIC thread (E) and your hose size (dash). The part number is the order code; copy it directly into your inquiry or purchase order. The pattern is 26791-[thread dash]-[hose dash]RW: for example, 26791-08-08RW has a 3/4″-16 thread and suits a -08 (12 mm) braided hose. In the largest sizes the part number carries a W in the suffix (26791-20-20WRW); keep this letter exactly as shown when ordering. If you need the same geometry for spiral hose, order the 26792 series.

The dimensions shown are for braided hose. For spiral hose use the 26792 series, whose stem is longer to engage the extra reinforcement layers.

Material e tratamento térmico

O forjamento a frio preserva o sentido dos grãos do aço, o que aumenta a resistência à fadiga sob pulsações de pressão. Cada lote submetido a tratamento térmico é submetido a um teste de dureza e os resultados são registados, pelo que o valor de dureza indicado no MTR corresponde às peças que recebe.

Pressão de funcionamento

A classificação exata para o seu número de peça e combinação de mangueiras é confirmada na ficha técnica e pelos nossos engenheiros antes do envio.

Envelope de funcionamento de pressão-temperatura

The steel elbow body holds full rated pressure across the whole temperature window. In a crimped assembly the working pressure is governed by the weakest component, normally the hose; use the hose derating curve for the system, and the elbow will not be the limiting part.

Seleção e Encomenda

The 26791-RW series covers the full common range of JIC hydraulic hose fittings for braided hose, from -03 to -32, so most orders can be placed directly from the tables below.

How to Read the Part Number Matrix

Find your JIC thread in the E column, then the hose dash size you use. The intersecting row gives the order code, for example a 7/8″-14 thread with a -10 hose gives 26791-10-10RW. If your combination is not listed, send us both sizes; a custom JIC female elbow is machined on request.

JIC Thread Size Chart

Use this chart to identify any JIC fitting by its thread and to confirm the matching hose dash sizes. It is the same mapping used in the matrix above.

Cross Reference Service

Most maintenance teams buy against a legacy part number printed on the old drawing. Send us the OEM or distributor part number you currently use, with a photo of the fitting if possible. Our engineers identify the thread, cone angle, hose size, bend angle, and body dimensions, then confirm the exact 26791-RW equivalent before you place the order. The service covers JIC 37 degree flare fittings, JIC hydraulic hose fittings, and JIC crimp fittings in your inventory, and interchange confirmation is free. The cross reference sheet is returned in PDF for your records.

Embalagem e Logística

Guia de Montagem e Utilização

Procedimento de crimpagem em quatro etapas

Crimping a JIC female 90° elbow follows the same discipline as any JIC crimp fittings job: the crimp parameters decide everything, so never start without the data sheet.

1. Corte a mangueira em ângulo reto: utilize um cortador de mangueiras, nunca uma serra de metais nem uma rebarbadora. Uma extremidade reta e limpa é condição essencial para uma fixação uniforme da virola.
2. Marque a profundidade de inserção: consulte a profundidade de inserção correspondente à sua série de mangueiras na ficha técnica de crimpagem e marque a linha no revestimento da mangueira.
3. Lubrifique e insira: apply a thin film of assembly lubricant to the stem and the hose bore, then push the elbow into the hose until the mark meets the ferrule.
4. Fazer a crimpagem e verificar: selecione a matriz de acordo com a tabela de crimpagem, efetue a crimpagem num único movimento contínuo e, em seguida, meça o diâmetro exterior da crimpagem com um paquímetro e compare com a tolerância.

Connecting the JIC Female End

Clean the internal 74° cone seat and the mating male 37° flare stud with a lint-free cloth. Orient the elbow so the hose exits in the direction the routing requires, then thread the male stud in by hand and tighten to the torque listed for the thread size, holding the elbow by the S2 hex. The metal-to-metal cone does the sealing, so no tape and no sealant is applied to the cone faces. JIC 37 degree flare fittings seal by cone contact alone, which is why both faces must stay clean and dry. Because the female end is a straight UNF thread, you can rotate the elbow during tightening to aim the hose exactly where the routing requires.

Avisos relativos à instalação

• ❌ Nunca misture acessórios e anilhas de diferentes fornecedores, mesmo que as roscas e os diâmetros das mangueiras pareçam idênticos. A geometria da haste, a dureza da anilha e os parâmetros de crimpagem diferem, e uma junta mista irá apresentar fugas ou soltar-se sob pressão.
• ❌ Nunca efetue a crimpagem sem a ficha técnica correspondente. Uma junta com crimpagem insuficiente provoca fugas, enquanto uma junta com crimpagem excessiva danifica o reforço da mangueira.
• ❌ Nunca volte a apertar um encaixe após uma tentativa falhada e nunca reutilize um encaixe retirado de uma mangueira.
• ❌ Never apply sealant to the 74° cone seat or the male flare cone. It hardens, blocks metal-to-metal contact, and contaminates the circuit.
• ❌ Do not use a 90° elbow to force a hose into a bend tighter than its minimum bend radius; the elbow solves port access, but the hose still needs its rated bend radius downstream.
• ✔ Após a montagem, submeta o circuito a um ensaio de pressão a 1,5 vezes a pressão de serviço e verifique se há fugas em todas as juntas.

Personalização OEM e rastreabilidade da qualidade

Opções de personalização

• Personalização do tamanho e da rosca: non-standard thread and hose combinations, special bend angles, and custom stem lengths machined to your drawing.
• Personalização do tratamento de superfícies: zinco trivalente (96 h), zinco-níquel (720 h) ou Dacromet (1000 h) — classes de resistência ao teste de névoa salina, selecionadas de acordo com o seu ambiente e as especificações de corrosão.
• Marcação a laser: o seu logótipo, o número de peça e o código de lote marcados a laser na porca hexagonal, para garantir a rastreabilidade total no terreno.
• Opções de materiais: Aço inoxidável 304/316L para circuitos químicos, marítimos e em contacto com alimentos, com certificados de passivação.

Sistema de Qualidade e Rastreabilidade

Cada lote segue um fluxo documentado: recebimento do aço com certificado da siderurgia → forjamento a frio → maquinagem CNC → tratamento térmico → revestimento → inspeção das roscas e dimensões segundo a norma 100% → ensaio de pressão → marcação a laser → embalagem. O número de lote indicado na caixa remete para o lote da matéria-prima, o registo do tratamento térmico e o relatório de inspeção. São fornecidos relatórios de ensaio de materiais (MTR) com cada encomenda, mediante pedido, e podem ser organizados relatórios de inspeção por entidades independentes (BV/SGS) antes do envio.

Perguntas Frequentes

Q: What is a JIC female 90° elbow? A: It is a crimp-on hose elbow with a female JIC UNF thread and an internal 74° cone seat on the port end, built to SAE J514 / ISO 8434-2. The 74° figure is the included cone angle; each flank is 37° from the axis, the same geometry as a male JIC 37° flare stud.

Q: When should I use a 90° elbow? A: Use a 90° elbow when the port faces sideways and the hose must turn at a right angle to reach it, such as cylinder ends, valve block faces, and pump outlets. It keeps the hose from bending sharply at the joint and keeps the bend radius above the minimum.

Q: What is the difference between the 45° and 90° versions? A: The bend angle. The 45° elbow (26741 series) redirects the hose gently for moderately tight spaces, while the 90° elbow (26791 series) makes a right-angle turn for side-facing ports. Both use the same JIC female 74° cone seat and the same crimp stem practice.

Q: What hose does the 26791-RW series fit? A: The series is designed for braided hose, typically EN 853 1SN/2SN or SAE 100R1AT/R2AT constructions from -03 to -32. For spiral hose use the 26792 series, which has a longer stem for the extra reinforcement layers.

Q: Does the female end need sealant or an O-ring? A: No. The 74° cone seat seals metal-to-metal against a male JIC 37° flare stud. Keep both cone faces clean and dry, and tighten to the listed torque. An O-ring is used only on ORFS fittings, which have a flat-face seal geometry.

P: Podem fornecer-me os dados de crimpagem para a minha mangueira? A: Yes. Every order includes the crimp data sheet for your hose construction, with insert depth, crimp outside diameter, and die selection. Correct crimp parameters are what separate reliable JIC crimp fittings from early failures, so we confirm them before shipment. Send us your hose series and brand, and our engineers will confirm the crimp parameters before shipment.

Solicitar um orçamento

Tell us the JIC thread, the hose dash size, the hose construction, and the annual quantity. Whether you need stock JIC hydraulic hose fittings for distribution or a custom JIC female 90° elbow for an OEM program, the quoting process is the same. For replacement orders, send the legacy part number and a photo, and our engineers will confirm the interchange before quoting. Every elbow leaves the HENGHUA factory pressure-tested, batch-coded, and backed by a written warranty. Request your quote, crimp data sheet, or drawing pack today, and we will respond within 24 hours.