Sand Blasting Air Compressors for Sale

Sand blasting air compressors deliver the high-volume, sustained compressed air that abrasive blasting nozzles require for surface preparation, rust removal, paint stripping, and coating work. CompressorPros carries sandblasting compressors from 70 CFM gas-powered portables to 800 CFM diesel tow behind systems, plus stationary electric rotary screw options. Standard shipping is free.

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What Are Sand Blasting Air Compressors?

A sand blasting air compressor supplies the high-volume, continuous airflow that propels abrasive media (sand, garnet, aluminum oxide, glass bead, or soda) through a blasting nozzle at high velocity. Sandblasting is one of the most CFM-intensive compressed air applications. A single 1/4" blasting nozzle draws approximately 80-100 CFM, and larger nozzles draw proportionally more. The compressor must deliver 100% duty cycle output because the nozzle runs continuously during the blasting operation, and any drop in pressure or volume slows the work and wastes media. Rotary screw compressors are the standard for sandblasting because they deliver continuous airflow without the cycling limitations of piston technology. Note: A large piston air compressor can handle smaller blast cabinets, but be mindful that they are not designed to continually produce compressed air and have a 60-75% duty cycle (two stage).

Portable Engine-Driven vs. Stationary Electric

Portable Engine-Driven Sandblasting Compressors

Portable engine-driven rotary screw compressors are ideal for field sandblasting: structural steel preparation, bridge and tank surface work, shipyard blasting, and outdoor restoration projects. They run on gasoline or diesel engines, require no electrical power, and are available in skid mount and tow behind configurations. The ConX SC70 Compact 70 CFM Engine Driven Rotary Screw Air Compressor is a compact gas-powered option for light blasting with small nozzles. The ConX SC110D 110 CFM Diesel Skid Mount Rotary Screw steps up to 110 CFM on a truck-mountable diesel platform. For standard single-nozzle sandblasting, the Elgi D185T4F 185 CFM Portable Rotary Screw Air Compressor - Tow Behind and the ConX SC185D deliver the CFM that a 1/4" or 3/8" nozzle demands. For multi-nozzle operations, Elgi and Atlas Copco tow behind models extend to 400-800 CFM.

Stationary Electric Sandblasting Compressors

Stationary electric rotary screw compressors serve blast rooms, blast cabinets, and fixed sandblasting operations inside shops and manufacturing facilities. They deliver 100% duty cycle, lower noise than engine-driven units, and connect to the facility's three phase electrical service. The Quincy QGS 25 TMD-3 25 HP Rotary Screw Air Compressor with Dryer serves shop-based blasting with an integrated dryer that removes moisture from the air supply, preventing media clumping and inconsistent blast patterns.

Types of Sandblasting Compressors by Nozzle Size

Light Blasting (70-110 CFM)

Compressors at 70-110 CFM serve small nozzles (No. 3 and No. 4) used for detail work, light rust removal, spot cleaning, and touch-up surface preparation. These units are compact enough to mount on a truck bed and serve small-scale blasting operations and maintenance crews.

Standard Single-Nozzle Blasting (185 CFM)

185 CFM is the most common compressor size for mobile sandblasting. It supports a No. 5 (5/16") or No. 6 (3/8") nozzle with adequate headroom for consistent blast pressure. A 185 CFM compressor handles structural steel prep, rust removal, paint stripping, and general surface preparation for coating and painting.

Multi-Nozzle and Large-Scale Blasting (250-800 CFM)

Operations running two or more nozzles simultaneously, using large-bore nozzles (No. 7 and above), or blasting large surface areas require 250-800 CFM. These compressors serve shipyards, bridge maintenance, pipeline coating preparation, and heavy construction projects.

Key Specifications

CFM (Cubic Feet per Minute): The critical spec for sandblasting. A No. 4 nozzle (1/4") draws 80-100 CFM. A No. 5 nozzle (5/16") draws 100-140 CFM. A No. 6 nozzle (3/8") draws 140-190 CFM. A No. 7 nozzle (7/16") draws 190-250 CFM. Match the compressor's CFM output to the nozzle size and add 20% for pressure drop in hoses and fittings.
HP (Horsepower): Gas portables: 22-30 HP at 70 CFM. Diesel portables: 24-45 HP at 90-185 CFM. Diesel tow behind: 45-200+ HP at 185-800 CFM. Stationary electric: 15-75+ HP.
Nozzle Size Compatibility: Select the compressor CFM based on the largest nozzle you plan to use. Undersizing the compressor for the nozzle reduces blast velocity, wastes abrasive media, and slows the work.
Max PSI (Pounds per Square Inch): Most sandblasting operates at 80-100 PSI at the nozzle. Most compressors deliver 100-150 PSI, which accounts for pressure drop across the blast pot, hose, and fittings.
Engine/Motor Type: Gasoline (Honda) for compact portables up to 70 CFM. Diesel (Kubota, Kohler) for 90-800 CFM. Three phase electric for stationary installations.
Mounting Configuration: Skid mount for truck bed transport. Tow behind for independent trailer towing. Stationary for blast rooms and shop installations.

Brands Carried

ConX: Gas and diesel portable rotary screw compressors from 70 to 185 CFM in skid mount and tow behind configurations, known for compact packaging.
Elgi: D-series diesel portable rotary screw compressors from 90 to 800 CFM in tow behind and skid mount, covering the widest CFM range for sandblasting on the site.
Quincy: QGS series stationary electric rotary screw compressors with integrated dryers from 15 to 30 HP for blast rooms and shop-based blasting operations.
Atlas Copco: Stationary rotary screw air compressors and portable diesel powered air compressors.

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FAQ

What size compressor do I need for sandblasting? It depends on nozzle size. A No. 4 (1/4") nozzle needs 80-100 CFM. A No. 6 (3/8") nozzle needs 140-190 CFM. For most single-nozzle jobs, a 185 CFM compressor is the standard. For two nozzles, double the CFM requirement.

What is the most common mistake when buying a sandblasting compressor? Undersizing the compressor for the nozzle. If the compressor cannot keep up with the nozzle's CFM demand, blast pressure drops, media velocity slows, and the operator spends more time and more abrasive to complete the job. Always match the compressor to the nozzle, not the other way around.

Can I sandblast with a piston compressor? Piston compressors are not recommended for sandblasting. They are rated for 50-70% duty cycle and cannot sustain the continuous airflow that a blasting nozzle demands. A rotary screw compressor at 100% duty cycle is the correct technology for sandblasting. Some blast cabinets can be run with a 7.5HP or larger piston unit.

Do I need dry air for sandblasting? Moisture in compressed air causes abrasive media to clump, clogs the blast pot and nozzle, and creates inconsistent blast patterns. For portable field blasting, an inline moisture separator helps. For blast rooms and shop installations, a compressor with an integrated refrigerated dryer (like the Quincy QGS TMD series) provides consistent dry air.

What is the difference between a skid mount and a tow behind for sandblasting? A skid mount rides on a truck bed or equipment trailer and is loaded with a forklift or crane. A tow behind travels on its own trailer behind the truck.

Does CompressorPros offer free shipping on sandblasting compressors? Yes. Standard shipping is free, direct from the manufacturer, on every unit in this category.

Shop Sand Blasting Air Compressors at CompressorPros

CompressorPros carries sand blasting air compressors from 70 CFM gas-powered portables to 800 CFM diesel tow behind systems, plus stationary electric rotary screw compressors with dryers for blast rooms. For dry ice blasting applications, browse the dedicated category. For the full range of portable rotary screw options, see the portable rotary screw page. For towable and skid mount configurations, browse by mounting type. Standard shipping is free, direct from the manufacturer.

If you need help matching a compressor to your nozzle size and blasting operation, call (803) 339-0445 or email info@compressorpros.com.

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Sand Blasting Air Compressors

Emax ERVK100003 10 HP Three Phase Variable Speed Rotary Screw Air Compressor with Dryer

Emax ERVK100003 230 Volt 10 HP Variable Speed Rotary Speed Air Compressor with Dryer

EMAX Silent Air ESP07D120V1 15 HP (2 x 7.5) 230 Volt Single Phase Silent Air Duplex Air Compressor

Industrial Gold CI1021E80V-P 10 HP Platinum Series 208-230 Volt Single Phase Two Stage Air Compressor

Industrial Gold CI1023E120H-P 10 HP Platinum Series 460 Volt Three Phase Two Stage Air Compressor

Industrial Gold CI7523E80V-CI10-P 7.5 HP Platinum Series 208-230 Volt Three Phase Two Stage Air Compressor

Industrial Gold DCI1023E120H-P 2 x 10 HP Three Phase Duplex Air Compressor

Industrial Gold DCI7523E120H-480 2 x 7.5 HP 460 V Duplex

Industrial Gold R73ENC3-CDR 7.5 HP 208/230 Volt Three Phase Rotary Screw Air Compressor with Dryer

Jenny U75B-120H 7.5 HP Single Phase 120 Gallon Air Compressor

Jenny U75B-80H 7.5 HP SIngle Phase 80 Gallon Air Compressor

Quincy 4103D12VCB46M 10 HP MAX, 460 Volt Three Phase, Two Stage, 120 Gallon Vertical Air Compressor