Hydraulics & Pneumatics

100+ products

Expected delivery: Tue, Nov 17

Compressed air and hydraulic supplies for shops, fleets, plants and service trucks: air fittings and couplers, hydraulic hose and fittings, air hose and reels, air tools and compressors, and regulators, gauges and cylinders. Mechanics and maintenance crews use these parts to build air drops, repair leaking lines and keep air tools and hydraulic equipment working.

How to choose air and hydraulic parts

  • Match the coupler profile. Quick couplers come in several profiles that do not interchange, such as industrial (M style), automotive (T style) and A style. Match the style already used in your shop, or change every plug and coupler at once.
  • Rate everything for system pressure. Hose, fittings, gauges and valves must be rated at or above the maximum pressure of the system. Hydraulic systems run at far higher pressures than shop air.
  • Know the thread type. Air fittings are usually NPT. Hydraulic connections also use JIC 37 degree flare, O-ring face seal (ORFS) and SAE O-ring boss ports, which do not seal with each other. When in doubt, match the fitting you are replacing or send us the part number for a quote.
  • Size for air flow. A tool's air use is listed in CFM at a given pressure, often 90 psi. Undersized hose, fittings or couplers can starve a tool of air.
  • Keep air clean and dry. A filter, regulator and lubricator (FRL) at each drop protects tools and cylinders from water, dirt and wrong pressure.

Never check for hydraulic leaks with your hands, since fluid under pressure can pierce skin. Follow the equipment manufacturer's instructions, OSHA requirements and your site's safety program.

Shops that go through couplers, plugs and hose ends every month can have bins stocked and reordered through vendor managed inventory. For hydraulic parts you need matched to an old part number, send a quote request.

Common questions

Are all air hose quick couplers the same?

No. Most common couplers share a 1/4 in. body size but use different plug profiles, so an industrial plug will not lock into an automotive coupler. Check the plug shape or the style printed on the coupler before ordering.

What PSI should I use for air tools?

Many air tools are rated to run at 90 psi at the tool, but always use the pressure listed by the tool manufacturer. Set it with a regulator rather than running full tank pressure.

Can I use compressed air to clean off clothes or skin?

No. Compressed air should never be pointed at a person. OSHA limits air used for cleaning to under 30 psi with chip guarding and PPE, so use nozzles made for that purpose.

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