One-Piece 90 Degree Elbow SAE Flange 6000 PSI Code 62 Hydraulic Hose Fitting: 87691-RW Series

Why This 90 Degree One-Piece Elbow Passes the Compliance Gate

The 87691-RW Series is a HENGHUA one-piece SAE flange 6000 psi hydraulic hose fitting that turns the hose through a full 90 degrees to the flange face. Because the head, the elbow body and the stem are forged as one piece, these one-piece SAE flange fittings have no brazed or welded joint in the corner of the bend, which is where two-piece right angle elbows crack under impulse. The flange head follows SAE J518 / ISO 6162-2 Code 62 dimensions, the hose end is manufactured to ISO 12151-3 as printed on the HENGHUA specification sheet, and the series belongs to the SAE 6000 psi flange fittings family specified for tight engine compartments and boom pivot areas.

That combination matters for three kinds of buyers:

• OEMs that need a documented, repeatable SAE 6000 psi flange fittings program with batch traceability and MTR support.
• Distributors that stock one code 62 flange fittings range to cover every right angle routing job from 1/2 in. to 2 in.
• Maintenance crews that replace a cracked elbow and want a crimp-on answer with standard tools and a clean O-ring face.
• Service shops repairing imported machines that want one-piece SAE flange fittings with clean documentation and fast restock.

Core Advantages

1. 6000 psi working class in a compact quarter turn. Rated as code 62 flange fittings from 1/2 in. to 2 in. (flange dash 08 to 32), with the height dimension H printed for every row so the lift above the hose centerline is known before the hose is cut.
2. One-piece forged corner. These one-piece SAE flange fittings remove the braze seam inside the 90 degree bend and keep the bore concentric through the corner.
3. Braided and spiral coverage. The dimension matrix below is valid for braided hoses as series 87691-RW; for spiral hoses the same head geometry is ordered as 87692-XX-XXRW.
4. Factory-level control. 100% pressure testing, trivalent zinc / zinc-nickel / Dacromet surface options, and a batch number on every box from the HENGHUA factory in China.

Technical Specifications

What Is a One-Piece 90 Degree Code 62 Flange Elbow?

A Code 62 flange elbow is a 6000 psi SAE J518 / ISO 6162-2 flange connection built into a 90 degree hose fitting, so the hose reverses direction while the machine side keeps the standard four-bolt flange pattern. In the one-piece version the head, the elbow and the stem come from a single forging, which removes the weld or braze joint that limits fatigue life in cheaper two-piece elbows. Every code 62 flange fittings order from HENGHUA is delivered with a head profile and bolt pattern that match standard Code 62 flange clamps, so you pair the elbow with the same split flanges and cap screws you already use on the straight series.

Specifiers choose a 90 degree code 62 flange elbow when the hose must turn back on itself to reach a valve, a manifold or a cylinder port. Right angle elbows dominate the SAE 6000 psi flange fittings layouts found on excavator booms and press manifolds. When you buy these one-piece SAE flange fittings, confirm the flange dash, the hose dash and the height H: H tells you how high the flange face sits above the hose centerline and whether the elbow clears the frame above it.

Dimensional Data

The printed specification sheet defines the envelope with the letters below, covering the SAE J518 code 62 flange family from 1/2 in. to 2 in. All dimensions are in millimeters.

Full Dimension Table (Part Number Matrix)

Read the matrix this way. The part number is built as series – flange dash – hose dash: 87691-16-16RW means series 87691-RW, 1 in. Code 62 flange (dash 16) and a 1 in. (DN 25) hose bore. DN is the nominal hose bore in millimeters and the dash value is the same bore in 1/16 in. increments, so the two columns agree row by row.

Notes printed on the specification sheet: 1. The part numbers above are for braided hoses. 2. For use with spiral hoses, change the series number to 87692-XX-XXRW.

The matrix prints a complete 2 in. flange row at both dash 24 and dash 32 hose bores, so the largest elbow in the series is fully covered by one drawing. Quote the full part number from your drawing and our engineers will confirm the stamping before mass production.

Material and Heat Treatment

These one-piece SAE flange fittings are machined in one setup after heat treatment, so the flange face stays square to the drawing plane and the height H is held within tolerance. Routing checks use the SAE 6000 psi flange fittings height values printed in the matrix, and raw material certificates plus heat treatment records are kept per batch and can be attached to the shipment on request.

Working Pressure and Operating Envelope

These code 62 flange fittings are engineered for the 6000 psi class, and the crimp parameters that unlock that rating are confirmed against the exact hose you select. Do not assume a rating from the flange head alone: the head is sized for 6000 psi service, but the complete assembly must be validated with the hose, the crimp diameter and the test records together. That is the difference between a number on paper and a field-proven 6000 psi hydraulic flange connection.

Selection and Ordering

How to Read the Part Number Matrix

Start from the machine: measure the flange dash (08, 12, 16, 20, 24 or 32), then the hose bore. Choose the series by hose construction: 87691-RW for braided hoses or 87692-XX-XXRW for spiral hoses. The A, C, D, H and L values in the row give the routing envelope, and H tells you the lift above the hose centerline. When hose and fitting are supplied together, HENGHUA builds the complete code 62 flange fittings assembly, pressure-tests it and stamps the batch number on the collar.

Choosing the Correct Hose Series

The matrix is dimensionally identical for braided and spiral hose families because the head geometry and the flange sizes do not change. Braided hose is the standard choice up to the 6000 psi class in most mobile circuits; spiral hose is preferred where impulse severity or bend fatigue demands a four- or six-spiral reinforcement. For braided hose, order the 87691-RW part numbers printed in the table. For spiral hose, order the same size combination as 87692-XX-XXRW so the stem, crimp pocket and skive length match the reinforcement layer you are using. Send us the hose brand and the hose dash, and we will confirm the correct series before you order. Whether braided or spiral, they are still code 62 flange fittings on the machine side of the joint.

Flange Size and Dash Size Chart

A 2 in. SAE J518 code 62 flange head is always dash 32, whatever hose bore sits behind it.

Cross Reference Service

Do you hold an old part number, a worn elbow or a stamped drawing without a clear series? Send the photo, the stamping or the drawing to our engineers and we will map it to the equivalent 87691-RW configuration. Many of these legacy numbers turn out to be SAE 6000 psi flange fittings under a different marking, and the dimension matrix above is the fastest way to confirm the dash. The service also covers 90 degree code 62 flange elbow numbers from machine lines that are no longer in production. When the equivalent is confirmed, we quote with the HENGHUA part number, the matching 87692-XX-XXRW spiral option, and the surface finish you specify.

Packaging and Logistics

Assembly and Use Guide

Four-Step Crimping Procedure

1. Cut the hose squarely and remove the outer cover to the skive length stated in the crimp data sheet.
2. Mark the insertion depth on the hose so the stem seats to the same position on every assembly.
3. Apply lubricant and push the hose onto the stem until the mark is reached.
4. Crimp with the correct die set, then verify the crimp outside diameter with a caliper against the value on the data sheet supplied with every order.

Mounting the Flange Connection

On a 90 degree elbow the flange face is parallel to the hose, so the elbow must be swung into position before the clamp halves are closed. Seat the O-ring or gasket in its groove, fit the split flanges over the head, and tighten the cap screws diagonally in two or three passes to the torque in the flange data sheet. The tightening rule for code 62 flange fittings is unchanged by the angle: align the halves, keep the threads clean and re-check the bolts after the first pressure cycle.

Installation Warnings

• Never mix hoses, fittings or ferrules from different sources in one crimped assembly; compatibility is verified as a set.
• Braided-hose fittings (87691-RW) and spiral-hose fittings (87692-XX-XXRW) are not interchangeable even when the dash sizes match.
• Flange bolts, clamp halves and O-rings are ordered separately from the fitting; confirm their specification before assembly.
• Crimping is a one-way operation. If the crimp diameter is wrong, cut the hose and start again; do not re-crimp a pulled ferrule.
• Do not reuse an O-ring that shows cuts or permanent set, and do not over-torque the flange bolts to stop a leak.

OEM Customization and Quality Traceability

Customization Options

Threads, stem length, height H and the hose-dash combinations in the table can be adjusted for production programs. Surface finish can be switched between trivalent zinc, zinc-nickel and Dacromet depending on the environment, and the head can be laser-marked with your logo, the batch number or a private label part number. OEM programs that standardize on SAE 6000 psi flange fittings can lock the zinc-nickel option and the marking into the drawing. Stainless steel 304 or 316L versions are available when the circuit is exposed to washdown or corrosive media.

Quality and Traceability System

Material receiving, cold forging, machining, heat treatment, surface treatment, 100% inspection, pressure testing, marking and packing are each recorded against the batch number. Every batch can be traced back to the raw material heat number and the heat treatment records, so a field question is answered from the file, not from memory. Third-party inspection such as BV or SGS can be arranged on request before shipment.

FAQ

What does the RW suffix mean on these one-piece SAE flange fittings? RW identifies the one-piece construction of the series. The flange head, the elbow body and the hose stem are formed from a single forging, so there is no welded or brazed joint inside the corner. That is why these one-piece SAE flange fittings carry a cleaner inspection history than two-piece welded elbows.

Is the 87691-RW a code 62 flange fitting? Yes. It is a 6000 psi nominal SAE Code 62 flange series with the head profile dimensioned to SAE J518 / ISO 6162-2, and the hose end is manufactured to ISO 12151-3 as printed on the specification sheet. In short, the head, the bolt pattern and the clamp dimensions follow the SAE J518 code 62 flange standard.

Can I use this elbow with spiral hose? Not with the 87691-RW part number. The table is printed for braided hoses; for spiral hose, order the same flange and hose dash as 87692-XX-XXRW so the stem and crimp pocket match the spiral reinforcement. The head and the clamp stay standard code 62 flange fittings hardware.

How do I know the flange size and the height of my SAE 6000 psi flange fittings elbow? Measure the flange head across the bolt holes or read the dash from the machine drawing, then read H in the matrix for the lift above the hose centerline. Every size in that chart is stocked as one-piece SAE flange fittings, so the head you measure is the head we ship.

Which seal do I need between the elbow and the mating surface? A Code 62 flange joint normally uses an O-ring seated in the groove of the mating flange head. On one-piece SAE flange fittings the face side is machined flat in the same setup as the head, so the seal seats evenly as long as the O-ring is replaced whenever the joint is opened.

Are the flange bolts supplied with the elbow? Flange bolts, clamp halves and seals are ordered separately. We can supply the matching Code 62 clamp halves and bolt sets for the same flange dash when you request them in the order. All SAE flange hose fittings in this family share the split-clamp hardware of the matching flange dash.

What documents come with a production order? Each batch carries a batch label, and the MTR, pressure test records and packing list are available on request. Third-party inspection such as BV or SGS can be arranged before shipment.

How fast can I get a quote for a custom 6000 psi hydraulic flange assembly with a 90 degree elbow? Send the drawing or the legacy part number with the hose bore and flange size, and our engineers will reply with a quotation within 24 hours. As with every SAE 6000 psi flange fittings inquiry, the quote names the series, the finish and the crimp data sheet. Samples are available for global delivery.

Request a Quote

Tell us the flange size, the hose bore, the hose construction and the height available above the hose centerline, and we will confirm the 87691-RW or 87692-XX-XXRW part number, the crimp data sheet and the surface finish in one reply. OEM and legacy replacement inquiries are handled by the same engineers who make the parts, so the answer comes with production knowledge, not a sales script. Expect an answer built on SAE flange hose fittings know-how: flange dash, hose dash, height and surface finish, confirmed by the engineers who make the parts. HENGHUA answers within 24 hours and supports your program with samples, MTR and batch traceability from the factory in China. Request a quote for these one-piece SAE flange fittings today and put a documented 6000 psi hydraulic flange connection behind every hose assembly.

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