JIC Female 90° Elbow for R5 Hose: 26798D-R5 Series

Why This R5 Hose Elbow Passes the Compliance Gate

A JIC female 90° elbow for R5 hose turns a textile-reinforced hose line at a right angle and connects it to a male JIC 37° flare stud through an internal 74° cone seat. The 26798D-R5 series from HENGHUA is a one-piece crimp elbow built to SAE J514 (ISO 8434-2), with a stem geometry engineered for R5-family hose, covering 10 sizes from -04 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 right-angle termination that completes an all-R5 hose circuit.

• 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.
• R5-engineered stem: the stem and ferrule geometry is matched to the soft cover and textile reinforcement of R5-family hose, so the crimp grips without crushing the carcass.
• Hex on body and nut: S1 on the elbow body and S2 on the nut collar give two wrenching positions; in the largest sizes the (R5)W variant uses a reinforced nut collar.
• OEM gate check: full dimensional and material conformance per SAE J514, with material test reports (MTR) available for every batch.

Core Advantages

1. Right-angle routing on textile hose: the 90° bend turns the line at the port while the R5 stem keeps a correct grip on the textile carcass, in one fitting instead of two.
2. JIC end rated up to 34.5 MPa (5,000 psi): per SAE J514 / ISO 8434-2, with every elbow hydrostatically tested before shipment.
3. -40°C to +120°C operating range: matches the continuous rating of R5-family hose and the wider circuit.
4. 96 to 1000 h salt spray options: trivalent zinc (96 h), zinc-nickel (720 h), or Dacromet (1000 h), matched to your environment.

Technical Specifications

What Is a JIC Female 90° Elbow for R5 Hose?

A JIC female 90° elbow combines a right-angle bend with a female JIC port end: the hose axis turns 90° at the fitting, and the port end carries a 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. Use the elbow when the port axis sits at a right angle to the hose run, which is common on cylinder ends, valve blocks, and pump outlets.

The R5 part of the name matters at the hose end, not the port end. R5-family hose (commonly called out to SAE 100R5) uses textile reinforcement instead of steel wire, which makes it flexible, light, and easy to route on mobile equipment, air compressors, and machine tools, with a generous temperature range. Textile hose does not behave like wire hose under the ferrule: the cover is softer, the carcass compresses differently, and the reinforcement must not be cut by the ferrule teeth. The 26798D-R5 stem and ferrule profile is engineered for this construction, so the crimp holds the hose firmly without crushing the textile carcass. Together with the 16718-R5 male series and the 26718D-R5 female straight series, the 26798D-R5 elbow completes the R5 hose family on the JIC connection standard. Confirm your exact hose construction with our engineers when ordering, and the matching crimp data sheet is supplied with the order.

Series Variants: 26798D-R5 and 26798D-R5W

The series covers two nut configurations shown on the drawing. Sizes from -04 to -16 carry the (R5) designation with a standard nut collar. Sizes from -20 to -32 carry the (R5)W designation, where the nut collar is reinforced for the larger diameters and heavier hose. Keep the W in the part number when ordering the large sizes; it is part of the order code.

Dimensional Data and Threads

Full dimension drawings with A, C, H, S1, 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.

Full Dimension Table (Part Number Matrix) {#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 26798D-[thread dash]-hose dash for sizes up to -16, and 26798D-[thread dash]-hose dashW from -20 upward.

The series covers the R5-hose segment of the JIC elbow range. Confirm your hose construction and the matching crimp data sheet with our engineers before ordering, and the correct insert depth and crimp outside diameter will be supplied with the order.

Material and Heat Treatment

Cold forging preserves the grain flow of the steel, which raises fatigue resistance under pressure pulsation. Each heat-treatment batch is hardness-tested and recorded, so the hardness number on the MTR matches the parts you receive.

Working Pressure

The exact rating for your part number and hose combination is confirmed on the datasheet and by our engineers before shipment.

Pressure-Temperature Operating Envelope

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.

Selection and Ordering

The 26798D-R5 series covers the R5-hose segment of JIC hydraulic hose fittings, from -04 to -32, and 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 3/4″-16 thread with a -08 hose gives 26798D-08-08(R5). If your combination is not listed, send us both sizes; a custom JIC female elbow for your hose 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 hose family, then confirm the exact 26798D-R5 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.

Packaging and Logistics

Assembly and Use Guide

Four-Step Crimping Procedure

Crimping an R5 hose elbow follows the same discipline as any JIC crimp fittings job: the crimp parameters decide everything, so never start without the data sheet.

1. Cut the hose square: use a hose cutter, never a hacksaw or an angle grinder. Textile hose frays easily, so a clean cut is even more important than on wire hose.
2. Mark the insert depth: read the insert depth for your hose series from the crimp data sheet and mark the line on the hose cover.
3. Lubricate and insert: 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. Crimp and verify: select the die per the crimp table, crimp in one continuous stroke, then measure the crimp outside diameter with a caliper and compare with the tolerance.

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, thread the male stud into the female end by hand until the cone faces touch, then tighten to the torque listed for the thread size, holding S1 or S2 with a second wrench as access requires. JIC 37 degree flare fittings seal by cone contact alone, which is why both cone faces must stay clean and dry. Do not apply sealant to the cone faces.

Installation Warnings

• ❌ Never mix fittings and ferrules from different suppliers, even when the thread and hose sizes look identical. Stem geometry, ferrule hardness, and crimp parameters differ, and a mixed joint will leak or blow off under pressure.
• ❌ Never use a wire-hose fitting on textile R5 hose, or an R5 fitting on wire hose. The stem profiles are different, and the wrong match damages the carcass or leaks.
• ❌ Never crimp without the matching crimp data sheet. Textile hose tolerates less over-crimping than wire hose before the carcass is damaged.
• ❌ Never recrimp a fitting after a failed attempt, and never reuse a fitting removed from a hose.
• ❌ Never apply sealant to the 74° cone faces. It hardens, blocks metal-to-metal contact, and contaminates the circuit.
• ❌ Do not use the 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.
• ✔ After assembly, pressure-test the circuit at 1.5x working pressure and inspect all joints for weepage.

OEM Customization and Quality Traceability

Customization Options

• Size and thread customization: non-standard thread and hose combinations, special bend angles, and special stem lengths machined to your drawing.
• Surface treatment customization: trivalent zinc (96 h), zinc-nickel (720 h), or Dacromet (1000 h) salt spray grades, selected by your environment and corrosion specification.
• Laser marking: your logo, part number, and batch code laser-marked on the hex for full field traceability.
• Material options: 304/316L stainless for chemical, marine, and food-contact circuits, with passivation certificates.

Quality and Traceability System

Every batch follows a documented flow: incoming steel with mill certificate → cold forging → CNC machining → heat treatment → plating → 100% thread gauge and dimension inspection → pressure test → laser marking → packing. The batch number on the carton links back to the raw material lot, the heat-treatment record, and the inspection report. Material test reports (MTR) are provided with every order on request, and third-party inspection reports (BV/SGS) can be arranged before shipment.

FAQ

Q: What is a JIC female 90° elbow for R5 hose? A: It is a crimp-on hose elbow with a female UNF thread and an internal 74° cone seat, built to SAE J514 / ISO 8434-2, with a stem geometry engineered for R5-family textile-reinforced hose instead of wire-reinforced hose.

Q: What does R5 mean in the part number? A: R5 designates the hose family the stem is engineered for: textile-reinforced hose of the type called out to SAE 100R5, commonly used where flexibility, light weight, and temperature range matter more than maximum pressure.

Q: What does the W in (R5)W mean? A: In this series the W marks the largest sizes, from -20 to -32, where the nut collar is reinforced to handle the larger diameters and heavier hose. Keep the W in the part number when ordering.

Q: What is the 74° cone seat? A: The 74° figure is the included angle of the internal cone, with each flank 37° from the axis, the same geometry as a male JIC 37° flare stud. The two cone faces seal metal-to-metal, so no O-ring or sealant is used.

Q: What hose sizes does the 26798D-R5 series cover? A: The series covers hose from -04 to -32 (DN 6 to 50). Confirm your exact hose construction with our engineers, and the matching crimp data sheet will be supplied with the order.

Q: Can you provide crimp data for my hose? 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.

Request a Quote

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 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.