Hydraulic hose crimping permanently deforms a metal ferrule around the hose and fitting stem, creating a mechanical lock that withstands working pressures up to 6,000 PSI. Crimp quality directly determines assembly safety—under-crimping causes blow-off, over-crimping cracks the fitting stem.
Crimp Diameter Tolerances
Crimp diameter is the critical quality parameter measured with a micrometer or digital caliper at the center of each crimp zone. SAE J1273 specifies crimp diameter tolerances typically ±0.005 inches. Each hose/fitting combination has a specific crimp specification from the manufacturer.
Skive vs No-Skive
Skive fittings require removing the outer rubber cover to expose the wire braid, enabling metal-to-metal crimp contact for maximum grip on high-pressure spiral hose. No-skive (bite-to-wire) fittings use serrated ferrules that bite through the cover—faster assembly but limited to braided hose.
Equipment
The CBK Crimper provides precision crimping with digital control. Nylon Hose Sleeve protects final assemblies. The Hydraulic Oil Filter Press maintains fluid cleanliness. The Oil Filter Press provides backup filtration. Oil Testing verifies hydraulic fluid quality.
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