гидравлический шланг Crimp таблица: Как Read размер матрицы таблицаs Without Errors

A hydraulic hose crimp chart tells you exactly which die to use and what final crimp diameter to hit for each hose and fitting combination. Misread one cell, and you get a leak — or worse, a blow-off at 4,000 PSI. This guide walks through how to read die size tables without errors, with worked examples from real crimp specifications.

According to crimping theory, a proper crimp deforms the metal past its yield point to create a cold-weld bond. The ferrule compresses the hose reinforcement wire and inner tube into a gas-tight connection — no oxygen or moisture reaches the metal, preventing corrosion. But this only works when the final diameter matches the chart specification.

Что такое a гидравлический шланг Crimp таблица?

A crimp таблица Ли a reference таблица supplied by фитинг or станок производительs. It maps each размер шланга and фитинг type to the correct комплект матриц number and target диаметр опрессовки. Think of it as the recipe card for a safe шланговый узел.

каждый таблица включает three core columns:

A crimp chart, you’re guessing. And in hydraulic systems, guesses cause crimp failures that can injure operators.

Как Read a Crimp таблица (Step-by-Step)

шаг 1: Identify ваш Hose тип

проверить hose layline — text printed along outer cover. он tells вы construction тип (1SN, 2SN, 4SH, R12, etc.) и nominal размер. этот matters потому что -12 2-проволока braid (DIN EN 853 2SN) и -12 4-проволока spiral (DIN EN 856 4SH) имеет различный стена thicknesses и нужен различный dies.

Step 2: Identify Your фитинг серия

проверить fitting body для stamp или marking. Common series включать один-piece, interlock, и reusable. fitting series determines который row на chart applies. Mixing до один-piece и interlock rows single большинство common chart reading ошибка.

шаг 3: Cross-Reference Die номер

Find your hose size in the left column, then scan across to the column matching your fitting series. The cell gives you the die set number — for example, P16/19 or P32/34. Load that die into the hydraulic hose crimper.

Step 4: Note the Target диаметр опрессовки

The chart gives a specific diameter in millimeters with a tolerance (e.g., 31.62 ± 0.15 mm). After crimping, measure the ferrule with a vernier caliper. If you’re outside the tolerance range, the assembly fails QC.

шаг 5: проверить с Die номер System

Most crimper dies are stamped with their number. Confirm the die in the machine matches what the chart says. A die stamped P32/34 is not the same as P32/39 — off-by-one errors are surprisingly common on busy shop floors.

опрессовать Chart Example: 3 Common Hose Types

Here’s a simplified excerpt showing как тот же станок handles различный hose constructions. These representative values — always использовать производитель’s таблица для ваш specific фитинг.

Notice how the same -12 hose needs a different die and diameter depending on whether the fitting is one-piece or interlock. That’s why identifying the fitting series before crimping matters. For more on fitting types, see our guide to hydraulic hose crimp fittings.

Die Number vs диаметр опрессовки: Почему Both Matter

несколько operators skip die номер и just опрессовать until they hit target diameter. That works — until it doesn’t. Here’s почему you нужен до проверить both:

Die number controls the crimp profile. Different dies produce different hexagon shapes. Even if the final diameter is correct, the wrong die can leave gaps between the die segments, creating uneven compression. The SAE J517 standard specifies that crimp profiles must produce uniform radial compression.

Target diameter confirms the result. The die gets you close. The caliper measurement confirms you nailed it. If the die is correct but the diameter is off, you know something else is wrong — hose wall thickness variation, wrong ferrule, or die wear.

A quality electric hydraulic hose crimper with CNC control can store these chart values and auto-stop at the target diameter. For manual machines, you’re relying on the operator reading the chart and caliper correctly.

Common таблица Reading MЛиtakes

после watching operators на hundreds of мастерская floors, here errors that show up большинство often:

One Reddit user reported using dies that were one size off because the die markings were worn: “The dies are probably for thicker connectors and lugs, but those are hard to find online.” Worn stamps on dies cause real problems. If you can’t read the die number, replace it. A portable crimper with well-maintained dies always outperforms a heavy duty machine with worn ones.

Quick Reference: допуск опрессовки by Hose Type

Tighter tolerances are required for higher-pressure hoses. Industry standard from crimp specification references is ±0.05 mm for standard applications and ±0.03 mm for safety-critical assemblies (brake lines, steering). Here’s a general guideline by hose construction:

High-end станок с ЧПУs like the TRC P32D achieve ±0.02 mm прецизионный — well within all допуск bands. ручной crimpers typically operate at ±0.10 to ±0.15 mm, sufficient for low-давление применения but marginal for спиральный шланг.

These tolerances come from the ISO 8434 and DIN EN standards. Your fitting manufacturer’s chart may specify tighter ranges. When in doubt, follow the tighter spec. For workshops running high-volume production, a heavy duty hydraulic crimper provides the tonnage consistency needed to stay within tolerance on larger bore hoses.

инструменты You Need Besides the таблица

A crimp specification sheet from your fitting supplier is the final authority. The chart in this article is a representative example — always defer to the manufacturer’s data for your specific parts.

• Digital caliper (±0.01 mm) — For measuring crimp diameter. A hydraulic crimper operator without a caliper is flying blind.
• Die reference sheet — A laminated card showing all die numbers with their hose range. Hang it next to the machine.
• 67# anti-wear hydraulic oil — The chart assumes proper machine lubrication. Dirty or wrong oil changes the effective crimp force.
• Ferrule and fitting samples — Keep one known-good assembly on the bench for visual comparison.

For shops running a manual hydraulic hose crimper, consider upgrading to a CNC model like the TRC P32D that stores chart data electronically. It eliminates the risk of reading the wrong row. See our crimping machine upgrade guide for more on when CNC pays for itself.

FAQ

что does a гидравлический шланг опрессовать таблица show?

It maps each combination of размер шланга, hose строительство, and фитинг type to the correct комплект матриц number and target диаметр опрессовки. You use it to select the right die and verify the finЛиhed crimp with a caliper.

можно I использовать тот же таблица для различный crimper brands?

Generally no. Die numbering systems differ между manufacturers. A P32/34 die из TRC may не match a P32/34 из another бренд. Always использовать таблица specific до ваш crimper и фитинг поставщик.

что happens если my диаметр опрессовки 0.3 mm свыше таблица spec?

An overcrimp of 0.3 mm можно restrict hose inner diameter, уменьшить flow, и create a stress point. It можно также crack обжимная гильза. Reject assembly и re-проверить ваш die selection.

где do I find опрессовать таблица для my фитинги?

ваш фитинг поставщик should предоставлять a таблица с каждый заказ. если they don’t, спросить для it — it’s a безопасность document. несколько manufacturers publish charts online или предоставлять PDF downloads.

Do I нужен a различный таблица для skived vs unskived hoses?

Yes. снятие изоляции removes outer cover, который changes обжимная гильза-до-hose fit. target диаметр опрессовки typically smaller для skived assemblies. проверить таблица’s skived/unskived columns.

как often should опрессовать charts be updated?

Whenever your fitting supplier revises their product design. Keep the chart revision date visible and request updates at least annually. A bench-mounted crimper should have the current chart posted within arm’s reach.

можно I calculate диаметр опрессовки без a таблица?

не reliably. диаметр опрессовки depends на обжимная гильза wall thickness, hose строительство, фитинг profile, и die geometry. таблица product of factory испытание — there’s no safe shortcut.

что’s разница между диаметр опрессовки и die открытие?

Die открытие gap между die faces перед опрессовка. диаметр опрессовки final measured diameter of обжимная гильза после опрессовка. They’re related но не тот же value.

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