Castair I7112HC2-S

Castair I7112HC2-S — Industrial Air Compressor, 120-Gallon Horizontal Tank

The Castair I7112HC2-S is a large-capacity industrial air compressor built for shops that run high air demand continuously throughout the day. Based on the SKU designation, this unit pairs a 7 HP class motor with a 120-gallon horizontal tank and a cast iron pump in configuration 2 — typically tuned for higher operating RPM. The factory-mounted magnetic starter (indicated by the -S suffix) means this unit ships ready for hardwired installation without sourcing a separate starter panel.

Manufacturer specifications for CFM, PSI, tank dimensions, and motor amperage are pending confirmation. Contact us before purchasing if you need to match specific air demand calculations for your shop.

What the I7112HC2-S Is Built For

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• High-volume shops: A 120-gallon receiver gives you substantial air storage, which smooths out demand spikes when multiple tools are running simultaneously.
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• Continuous-duty applications: Cast iron pump construction is designed for longer run cycles compared to aluminum alternatives — appropriate for frame shops, production lines, or fleet service bays.
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• Horizontal tank layout: Lower center of gravity compared to vertical tanks of the same capacity. Better choice for shops with overhead clearance constraints or when you want the unit tucked along a wall.
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• Factory magnetic starter: The -S designation means a magnetic starter is factory-mounted and pre-wired. Your electrician connects power — no additional motor starter sourcing required.
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• Configuration 2 pump: The C2 designation within Cast Air's lineup typically reflects a higher RPM pump configuration. Contact us to confirm how this affects CFM output versus the C1 variant for your specific application.
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Horizontal Tank vs. Vertical Tank: Which Do You Need?

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• Horizontal: Easier to drain condensate, more stable on the floor without wall anchoring, and generally preferred for mobile or semi-mobile installations.
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• Vertical (see I7112VC2-S): Smaller floor footprint — important if floor space is the constraint, not ceiling height.
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120-Gallon vs. Smaller Tank Sizes

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• If your shop runs intermittent air demand — tire changes, occasional impact gun use — an 80-gallon unit (I718 series) is likely sufficient and will cost less.
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• If you are running paint booths, continuous blast equipment, or multiple bays simultaneously, the 120-gallon receiver keeps pressure more consistent under sustained demand.
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• Bigger tanks also mean longer intervals between compressor cycles, which reduces motor wear over time.
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Installation Notes

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• Requires dedicated hardwired electrical — verify amperage requirements with your electrician before ordering.
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• Horizontal orientation requires adequate floor space — confirm footprint dimensions with us prior to purchase.
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• Cast iron pump requires break-in per manufacturer procedure and regular oil changes. Follow the manual.
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What's in the Box

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• Castair I7112HC2-S compressor unit (motor, pump, tank assembled)
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• Factory-mounted magnetic starter
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• Owner's manual and warranty documentation
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• Contact us to confirm full included accessories before ordering
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Manufacturer Specifications

Manufacturer specifications including CFM at 90 PSI, maximum PSI, motor amperage, tank dimensions, and shipping weight are pending confirmation. Contact us for full technical specifications before purchase.

Why Buy From OEM Diagnostic Tools?

We have been a specialist supplier of professional shop equipment since 2016. Every Cast Air compressor we sell comes with free shipping, full manufacturer warranty, and free technical support. Call us at 866-217-0063 — we know this equipment and can help you choose the right configuration for your shop.

Call 866-217-0063 for quick answers and help\!