90 Degree Elbow SAE Flange 3000 PSI Interlock Hydraulic Hose Fitting: 87393 Series

Why This 90 Degree Elbow SAE Flange Interlock Hydraulic Hose Fitting Passes the Compliance Gate

This 90 degree elbow SAE flange interlock hydraulic hose fitting, series 87393, reverses a spiral-hose circuit through a right angle and ends in a flat-faced 3000 psi Code 61 flange head. The flange geometry follows SAE J518 / ISO 6162-1 (Code 61), and the hose end with its interlock collar is built to ISO 12151-3 and SAE J516, as printed on the data sheet. The interlock collar locks into the spiral reinforcement during crimping, so the joint keeps its hold under pressure surges.

For an OEM, this interlock design removes a fabricated 90 degree bend from the routing and puts a repeatable, tested flange interface on the assembly line. For a distributor, one catalog line covers five flange sizes of SAE 3000 psi flange fittings across the common spiral-hose bores. For a maintenance team, a 90 degree elbow flange fitting is the direct replacement that restores the original routing without re-engineering the hose length.

• 90 degree elbow configuration with interlock collar for spiral-wound hose.
• 3/4″ to 2″ Code 61 flange sizes, covering DN 20 to DN 50 hose bores.
• Flange head with O-ring groove at the face, ready for standard Code 61 sealing.
• 100% pressure tested at the factory, with batch records available.
• The interlock tail profile must be matched to a spiral-hose spec, not braided hose.
• Part of the HENGHUA SAE 3000 psi flange fittings program, with matching FL series split clamps, O-rings, and bolts available in the same shipment.

Core Advantages

1. Right-angle routing in a tight envelope. The 90 degree drop tucks the hose close to the component, which clears motor ports, cylinder ends, and valve stacks where space is measured in millimeters.
2. Built for spiral-wound hose. The interlock collar engages the spiral wire layers during crimping, which makes this interlock hydraulic hose fitting the dependable choice for four- and six-spiral circuits where standard tails tend to slip.
3. Nominal 3000 psi Code 61 flange face. Like every code 61 flange fitting in the HENGHUA program, the head mates with standard SAE J518 / ISO 6162-1 split flange clamps from the FL series, and the size-dependent rating is defined by the standard.
4. Corrosion protection matched to the environment. Trivalent zinc (96 h salt spray), zinc-nickel (720 h), or Dacromet (1000 h) is applied according to duty.

Technical Specifications

What Is a 90 Degree Interlock Hydraulic Hose Fitting?

A flange type hydraulic hose fitting terminates in a flat-faced flange head instead of a threaded port. Two split flange halves clamp the head to a mating pad, which makes the joint compact, vibration-resistant, and easy to orient in the field. Flange heads come in two pressure families: Code 61 is the 3000 psi series and Code 62 is the 6000 psi series; code 61 vs code 62 hardware must never be mixed because the head, clamp, bolt, and pad dimensions all differ.

Interlock adds a second idea to that flange head. Where a conventional tail relies on radial compression alone, an interlock flange fitting carries a collar that locks into the spiral wire reinforcement as the crimp closes. The result is a positive mechanical hold that resists pull-off under pressure surges, which is why SAE flange fittings for spiral hose almost always use an interlock structure.

The 87393 series is the 90 degree member of the 3000 psi interlock family. Use a 90 degree elbow flange fitting when the line must turn back toward the component and the port face is perpendicular to the hose run. In the same family, the straight and 45 degree versions are the 87313 and 87343 series, and 6000 psi and 9000 psi interlock lines are available for heavier duty classes. Every code 61 flange fitting in this interlock family shares one head geometry, so the clamps, O-rings, and pads interchange across the straight and elbow configurations.

Dimensional Data

Dimension letters follow the drawing printed on the data sheet: A, C, D, H, and L. All values are in millimeters (mm).

Full Dimension Table (Part Number Matrix)

The matrix below is transcribed from the 87393 data sheet and lists every flange type interlock hydraulic hose fitting code in the series. In each part number, the first dash group is the flange size in 1/16″ increments and the second is the hose dash, for example 87393-32-24 means a 2″ flange (dash 32) with a dash-24 hose tail. Dimensions are in mm as printed.

No footnote is printed on the 87393 sheet. This 90 degree elbow interlock hydraulic hose fitting series is intended for spiral-wound hose; for wire-braid hose, choose the matching Code 61 braided series (87391-XX-XX) from the HENGHUA program. Always confirm the crimp outside diameter against the crimp data sheet that ships with every order.

Material and Heat Treatment

Working Pressure and Operating Envelope

For SAE 3000 psi flange fittings for spiral hose in the interlock style, the assembly rating is the lower of the flange, hose, and crimp values. The crimp data sheet shipped with each order is the verification reference.

Selection and Ordering

How to Read the Part Number Matrix

Read the series number first: 87393 means a 90 degree elbow SAE flange interlock hydraulic hose fitting for spiral-wound hose. If the circuit uses wire-braid hose instead, select the 87391 series, which keeps the Code 61 flange envelope with a braided-hose tail. Then read the two dash groups as flange size and hose dash in 1/16″ increments; both values are printed on your hose spec and on the flange pad drawing.

Flange Size and Dash Size Chart

Cross Reference Service

Send us your legacy part number, a drawing, or a physical sample, and we map it to the closest HENGHUA 87393 code. If you currently run SAE 3000 psi interlock flange fittings under legacy numbers, include the old part number and a photo so the match can be confirmed before you order. The service is free for volume buyers, and the confirmation includes flange size, hose dash, and dimensions so your team can verify before ordering.

Packaging and Logistics

Assembly and Use Guide

Four-Step Crimping Procedure

1. Cut the spiral hose square and remove any loose debris from the bore.
2. Mark the insertion depth from the crimp data sheet on the hose cover.
3. Lubricate the tail lightly and push the hose fully to the depth mark.
4. Crimp with the specified die set, then verify the crimp outside diameter with a caliper against the data sheet.

Mounting the Flange Connection

Center the flange head over the mating pad and seat the O-ring in the head groove. Place the two split flange halves over the head, fit the bolts, and tighten them in a diagonal sequence in two or three passes. Use the bolt size and torque given on the split flange clamp data sheet; never reuse a crushed O-ring. This procedure applies across the Code 61 flange fittings in this series, from the 3/4″ head up to the 2″ head.

Installation Warnings

• Do not mix braided-hose and spiral-hose fittings; the interlock tail and crimp profile are made for spiral hose only.
• Do not mix Code 61 and Code 62 hardware; the heads, clamps, and bolts are not interchangeable.
• Do not use hoses, fittings, or ferrules from different brands in one crimp assembly.
• Do not re-crimp a fitting that was opened or that failed a gauge check; a crimp is a one-time deformation.
• Order the flange bolts, clamps, and O-rings to the correct spec; they are separate line items from the fitting itself.
• Orient the 90 degree bend before tightening so the hose exits on the correct side of the pad and keeps its minimum bend radius.

OEM Customization and Quality Traceability

Customization Options

Bend angle, stems, and lengths are customized for OEM programs; surface finish can be set to zinc, zinc-nickel, or Dacromet; 304/316L material is available for corrosive duty; laser marking adds your logo and batch number to the body.

Quality and Traceability System

Incoming material, cold forming, machining, heat treatment, surface finishing, 100% inspection, pressure testing, marking, and packaging are each recorded. A batch number traces back to the steel heat and the heat-treatment and inspection records. MTRs ship with the order, and BV/SGS third-party inspection can be arranged before shipment.

FAQ

Q: When should I choose a 90 degree elbow flange fitting instead of a straight one? A: Choose the 90 degree elbow when the port face is perpendicular to the hose run and the line must turn back within a tight envelope. It protects the hose from a sharp bend at the fitting and keeps the routing compact.

Q: What makes an interlock hydraulic hose fitting different from a regular flange fitting? A: The interlock collar locks into the spiral wire reinforcement as the crimp closes, giving a positive mechanical hold. Standard tails rely on radial compression and are not recommended for spiral-wound hose.

Q: Can the 87393 series be used with braided hose? A: No. The 87393 interlock hydraulic hose fitting belongs to the HENGHUA range of flange fittings for spiral hose. For wire-braid hose, order the matching Code 61 braided series (87391-XX-XX).

Q: Is the 87393 Code 61 or Code 62? A: Code 61. As a code 61 flange fitting it follows the SAE J518 / ISO 6162-1 geometry with a nominal 3000 psi rating and must not be paired with Code 62 clamps or pads.

Q: How do I read a part number like 87393-32-24? A: 87393 is the series, 32 is the flange size in 1/16″ increments (2″), and 24 is the hose dash (1.1/2″ bore, DN 40).

Q: Does the fitting come with an O-ring and bolts? A: The flange head carries the standard Code 61 O-ring groove. O-rings can be supplied with the order; the split flanges and bolts are separate line items selected to the flange size.

Q: What temperature range does it cover? A: Typically -40°C to +120°C. High-temperature or low-temperature systems should be checked against the hose and seal ratings first.

Q: Can HENGHUA make a custom version of this interlock fitting? A: Yes. Custom bend angle, stems, surface finish, stainless material, and laser-marked part numbers are standard OEM options with a 24 h quotation response.

Request a Quote

Tell us the flange size, hose dash, hose spec (spiral-wound, with the brand and construction), and quantity, and we will confirm the 87393 code, price, and lead time within 24 hours. OEM buyers can add legacy part numbers or drawings for cross reference. Samples ship worldwide so your team can gauge this 90 degree elbow SAE flange interlock hydraulic hose fitting before you commit.

Browse the full Flange Fittings range for the complete family, or contact us to request a quote, mill test reports, and samples.