90 Degree Elbow JIS Flange Hydraulic Hose Fitting: 88191 Series

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

The 88191 Series is a 90 degree elbow JIS flange hydraulic hose fitting with a Japanese-standard (JIS B8363) flange head and a crimp-style barbed hose end. It is engineered for hydraulic lines on Japanese-built excavators, loaders, and construction machinery where a flange-port connection must turn the hose at a right angle. For OEMs, the flange head geometry is interchangeable with original Japanese flange hardware, so machine drawings stay unchanged. For distributors, the series covers the common 5/8 inch flange with three hose bores in one part number family. For maintenance teams, the 90 degree turn saves space at the port and simplifies hose routing in crowded compartments.

Why this 90 degree JIS flange fitting passes the compliance gate:

• 90 degree elbow body for right-angle routing at the flange port
• 5/8 inch flange head: C 34.2 mm outer diameter, L 6.7 mm lip thickness
• Hose bores DN 12, DN 16, and DN 20 (dash 08, 10, 12) on one flange size
• Overall height H from 48 mm up to 62 mm across the listed sizes
• Carbon steel cold-formed body, case hardened, with corrosion-resistant finish options
• Braided-hose series; spiral-hose counterparts order as 88192-XX-XX

Core Advantages

1. Right-angle routing in tight spaces. The 90 degree elbow turns the hose at the port, saving length and clearance compared with a bent hose.
2. Interchangeable Japanese flange geometry. The flange head follows the JIS B8363 flange interface and mates with existing ports, O-rings, and clamp hardware.
3. Three hose bores on one flange size. Stock DN 12, DN 16, and DN 20 while carrying a single 5/8 inch flange pattern.
4. Braided and spiral coverage. The listed numbers serve braided hoses; spiral-hose orders simply move to the 88192 series.

Especificaciones técnicas

What Is a 90 Degree Elbow JIS Flange Hydraulic Hose Fitting?

A 90 degree elbow JIS flange hydraulic hose fitting turns the hose path by 90 degrees at the flange port while keeping the sealing performance of the flange joint. The flange head is bolted to the port with an O-ring seal, and the barbed end is crimped onto the hose.

The 88191 Series suits pump, valve, and cylinder ports where the hose must run parallel to the mounting face. Because the bend is formed in the fitting body rather than in the hose, the hose keeps its natural bend radius and the assembly stays compact.

Dimensional Data

Full Dimension Table (Part Number Matrix)

Read each part number from left to right: 88191-10-08 breaks down as 88191 (braided 90 degree elbow JIS flange series), 10 (flange size 5/8 inch in 1/16 inch dash), and 08 (hose dash). All listed sizes share one 5/8 inch flange pattern.

Dimensions are in millimeters.

Note: the part numbers above are for use with braided hoses. If the assembly uses spiral hoses, the hose fitting series number becomes 88192-XX-XX.

Material and Heat Treatment

Working Pressure and Operating Envelope

• Flange port hardware (O-ring, bolts, clamp halves) is sized to the Japanese flange standard used on the machine.
• Assembly working pressure is governed by the selected hose and the crimped assembly, not by the fitting alone.
• Every fitting passes a 100 percent factory pressure test before packaging.
• Typical service temperature range is -40 °C to +120 °C, with system derating set by the hose and seal compounds.
• A crimp data sheet with verified crimp diameters is provided with every order; always follow the values on that sheet.

Selection and Ordering

How to Read the Part Number Matrix

The matrix lists three braided-hose part numbers for the 88191 JIS flange hydraulic hose fitting. Match the hose dash first, then confirm the flange size. If the project runs spiral hose, keep the same dash pattern and move to series 88192.

Flange Size and Dash Size Chart

Cross Reference Service

Do you hold a legacy or OEM part number and need the matching HENGHUA series? Send the old number, a photo, or a sample. Our engineers confirm the flange size, hose dash, and bend angle within 24 hours and reply with the equivalent 88191 series number. Across the JIS flange fittings family, the same cross-reference service covers the 88111 straight and 88141 45 degree elbows.

Packaging and Logistics

Assembly and Use Guide

Four-Step Crimping Procedure

1. Cut the hose square and clean the end; remove loose rubber particles.
2. Mark the insertion depth on the hose as indicated in the crimp data sheet.
3. Lubricate the barb and push the hose to the depth mark without twisting.
4. Crimp with the specified die set, then verify the crimp OD with a caliper against the data sheet value.

Mounting the Flange Connection

Align the flange head squarely with the port face and confirm the O-ring sits cleanly in its groove. Insert the bolts or clamp halves supplied with the mating hardware, then tighten evenly in a diagonal sequence to the torque stated in the data sheet. Orient the elbow before final torque so the hose points in the planned direction.

Installation Warnings

• Do not mix hoses, fittings, or ferrules from different suppliers in one crimped assembly.
• Do not use a braided-hose fitting on a spiral hose; the part number must move to the 88192 series.
• Bolts and clamp halves are not included; order them separately to the flange standard.
• A crimped assembly cannot be re-crimped; a wrong crimp means a new fitting.
• Check the elbow orientation before tightening; rotating the body after torque can break the seal.

OEM Customization and Quality Traceability

Customization Options

• Body length and angle adjustments for machine-specific layouts
• Surface finish selection: trivalent zinc, zinc-nickel, or Dacromet
• Laser marking of customer logo, part number, and batch code
• 304 / 316L stainless steel material options for corrosive environments

Quality and Traceability System

Each 88191 series fitting follows the HENGHUA flow: incoming material, cold forming, machining, heat treatment, surface treatment, 100 percent inspection, pressure test, marking, and packaging. The batch code traces back to the raw material heat number, heat treatment records, and inspection report. BV or SGS third-party inspection can be arranged on request.

FAQ

Q: What is a 90 degree elbow JIS flange hydraulic hose fitting? A: It is a hose end with a Japanese-standard flange head and a barbed crimp end set at a 90 degree angle. It connects braided hydraulic hose to flange-port equipment while turning the line at a right angle.

Q: Which standard does the 88191 flange head follow? A: The flange head is machined to the Japanese flange interface (JIS B8363). Confirm the port pattern and O-ring size with your machine drawing before ordering.

Q: What hose sizes does the 88191 series cover? A: Three bores are listed on the 5/8 inch flange: DN 12 (dash 08), DN 16 (dash 10), and DN 20 (dash 12).

Q: Can I use the 88191 series with spiral hose? A: No. The listed numbers are for braided hoses. For spiral hoses, order series 88192-XX-XX with the same dash pattern.

Q: Why choose a 90 degree elbow instead of a 45 degree elbow? A: Use the 90 degree version when the hose must run back parallel to the mounting face. The right angle saves clearance at the port and shortens the hose path.

Q: How is the flange joint sealed? A: The port and flange head are sealed with an O-ring. Install the O-ring in its groove, align the faces, and tighten the bolts evenly to the specified torque.

Q: Do I need to buy bolts and clamp halves separately? A: Yes. Bolts, clamp halves, and O-rings belong to the mating flange hardware and are ordered separately to the flange standard.

Q: How fast is a quotation? A: Quotations are answered within 24 hours. Samples ship worldwide with a full dimensional report.

Solicitar un presupuesto

Ready to specify the 88191 90 degree elbow JIS flange hydraulic hose fitting? Send your hose series, dash size, flange size, quantity, and target finish. For OEM and replacement inquiries, attach the legacy part number or a sample photo. HENGHUA replies within 24 hours and supports sample orders worldwide.

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