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ROLAIR

ROL AIR is a manufacturer of reciprocating air compressors and replacement compressor pumps. The brand's product line centers on splash-lubricated, belt-driven compressor pumps and complete compressor units, with a focus on serviceable, mechanically simple designs. ROL AIR pumps are available in single-stage and two-stage configurations, covering fractional horsepower up to 7.5 hp, with flow ratings from approximately 1.3 cfm at 145 psi to 23.5 cfm at 175 psi. The pumps use splash lubrication rather than pressurized oil systems, which simplifies maintenance and reduces the number of wear components. This architecture is common in workshop and light-industrial compressor service, where pumps are rebuilt or replaced rather than discarded. 3G Electric supplies ROL AIR compressor pumps and portable electric air compressors as part of its industrial equipment catalog. The current ROL AIR range includes replacement pumps such as the PMP11K3GR (0.75 hp, 1.3/1.85 cfm at 145 psi), PMP11K8GR (1.5 hp, 2.66/3.72 cfm at 145 psi), PMP12K17GR (3 hp, 10.1/8.5 cfm at 150 psi), PMP12MK113GR (4 hp, 15.1/9.9 cfm at 145 psi), PMP12K35GR (7.5 hp, 22.6 cfm at 100 psi), PMP22K30GR (7.5 hp, 19.1/24.0 cfm at 175 psi), and PMP22K30CH (7.5 hp, 23.5 cfm at 175 psi). These pumps are intended for direct replacement in compatible ROL AIR compressor systems, restoring original flow and pressure performance. The two-stage 7.5 hp models are rated for continuous-duty industrial applications, while the single-stage units cover lower-demand tasks such as powering pneumatic tools, inflation equipment, and spray guns. In addition to pumps, 3G Electric carries a wheeled portable electric air compressor (SKU 35DZ69, MPN 5230K30-0095) with a 9-gallon tank, 5 hp motor, and 240V AC, 28 A electrical input. This unit is a wheelbarrow-style, splash-lubricated compressor intended for mobile use in workshops, job sites, and maintenance operations. The 9-gallon receiver supports intermittent demand from pneumatic tools, tire inflation, and spray equipment without requiring a stationary installation. For technical buyers, the relevant selection criteria for ROL AIR pumps are horsepower, stage count, flow at a specified pressure, and physical compatibility with the existing compressor crankcase and pulley arrangement. The model numbers encode these attributes, and 3G Electric lists the corresponding manufacturer part numbers to support cross-referencing against existing equipment. Because ROL AIR pumps are splash-lubricated, they do not require an external oil pump or pressure lubrication circuit, which reduces installation complexity when replacing a failed pump. The pumps are belt-driven, so the motor and pump are separate components; this allows the pump to be replaced independently of the motor and tank. 3G Electric maintains 36 ROL AIR SKUs, covering the pump range and the portable compressor unit. The catalog includes datasheets and logistics support for international shipment. Buyers specifying ROL AIR equipment should confirm the required flow and pressure at the point of use, the available electrical supply, and the mechanical interface of the pump or compressor. For replacement pumps, matching the manufacturer part number to the existing unit is the most direct way to ensure compatibility. For new installations, the two-stage 7.5 hp pumps are specified where higher pressure (175 psi) and continuous duty are required, while single-stage pumps are used where lower pressure and intermittent duty are acceptable. The portable wheeled compressor is suited to applications where the air supply must move with the work, such as service trucks, remote job sites, and maintenance bays without a fixed compressed air system.

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About ROLAIR

ROL AIR is a manufacturer of reciprocating air compressors and replacement compressor pumps. The brand's product line centers on splash-lubricated, belt-driven compressor pumps and complete compressor units, with a focus on serviceable, mechanically simple designs. ROL AIR pumps are available in single-stage and two-stage configurations, covering fractional horsepower up to 7.5 hp, with flow ratings from approximately 1.3 cfm at 145 psi to 23.5 cfm at 175 psi. The pumps use splash lubrication rather than pressurized oil systems, which simplifies maintenance and reduces the number of wear components. This architecture is common in workshop and light-industrial compressor service, where pumps are rebuilt or replaced rather than discarded. 3G Electric supplies ROL AIR compressor pumps and portable electric air compressors as part of its industrial equipment catalog. The current ROL AIR range includes replacement pumps such as the PMP11K3GR (0.75 hp, 1.3/1.85 cfm at 145 psi), PMP11K8GR (1.5 hp, 2.66/3.72 cfm at 145 psi), PMP12K17GR (3 hp, 10.1/8.5 cfm at 150 psi), PMP12MK113GR (4 hp, 15.1/9.9 cfm at 145 psi), PMP12K35GR (7.5 hp, 22.6 cfm at 100 psi), PMP22K30GR (7.5 hp, 19.1/24.0 cfm at 175 psi), and PMP22K30CH (7.5 hp, 23.5 cfm at 175 psi). These pumps are intended for direct replacement in compatible ROL AIR compressor systems, restoring original flow and pressure performance. The two-stage 7.5 hp models are rated for continuous-duty industrial applications, while the single-stage units cover lower-demand tasks such as powering pneumatic tools, inflation equipment, and spray guns. In addition to pumps, 3G Electric carries a wheeled portable electric air compressor (SKU 35DZ69, MPN 5230K30-0095) with a 9-gallon tank, 5 hp motor, and 240V AC, 28 A electrical input. This unit is a wheelbarrow-style, splash-lubricated compressor intended for mobile use in workshops, job sites, and maintenance operations. The 9-gallon receiver supports intermittent demand from pneumatic tools, tire inflation, and spray equipment without requiring a stationary installation. For technical buyers, the relevant selection criteria for ROL AIR pumps are horsepower, stage count, flow at a specified pressure, and physical compatibility with the existing compressor crankcase and pulley arrangement. The model numbers encode these attributes, and 3G Electric lists the corresponding manufacturer part numbers to support cross-referencing against existing equipment. Because ROL AIR pumps are splash-lubricated, they do not require an external oil pump or pressure lubrication circuit, which reduces installation complexity when replacing a failed pump. The pumps are belt-driven, so the motor and pump are separate components; this allows the pump to be replaced independently of the motor and tank. 3G Electric maintains 36 ROL AIR SKUs, covering the pump range and the portable compressor unit. The catalog includes datasheets and logistics support for international shipment. Buyers specifying ROL AIR equipment should confirm the required flow and pressure at the point of use, the available electrical supply, and the mechanical interface of the pump or compressor. For replacement pumps, matching the manufacturer part number to the existing unit is the most direct way to ensure compatibility. For new installations, the two-stage 7.5 hp pumps are specified where higher pressure (175 psi) and continuous duty are required, while single-stage pumps are used where lower pressure and intermittent duty are acceptable. The portable wheeled compressor is suited to applications where the air supply must move with the work, such as service trucks, remote job sites, and maintenance bays without a fixed compressed air system.

Common Applications

  • Automotive repair shops — ROL AIR PMP12K17GR 3 hp single-stage pump for pneumatic tools and tire inflation
  • Industrial maintenance — ROL AIR PMP22K30GR 7.5 hp two-stage pump for continuous-duty 175 psi compressed air
  • Construction and job sites — ROL AIR 5230K30-0095 wheeled portable compressor with 9-gallon tank for mobile air supply
  • Paint and coating operations — ROL AIR PMP12MK113GR 4 hp pump for spray gun and spray equipment air supply
  • Workshop compressor rebuilds — ROL AIR PMP11K8GR 1.5 hp replacement pump to restore flow in compatible units
  • High-pressure industrial processes — ROL AIR PMP22K30CH 7.5 hp two-stage pump delivering 23.5 cfm at 175 psi

Frequently asked questions

Common questions about ROLAIR from 3G Electric.

What is the difference between the single-stage and two-stage ROL AIR compressor pumps?

Single-stage ROL AIR pumps compress air in one cylinder stage, which is typical for lower pressure ratios and intermittent duty. Two-stage pumps compress air in two stages with intercooling, which is more efficient at higher pressures. In the 3G Electric catalog, single-stage models include the PMP11K3GR (0.75 hp), PMP11K8GR (1.5 hp), PMP12K17GR (3 hp), PMP12MK113GR (4 hp), and PMP12K35GR (7.5 hp). Two-stage models include the PMP22K30GR and PMP22K30CH, both rated at 7.5 hp and 175 psi. Two-stage pumps are specified where higher pressure and continuous duty are required.

How do I select a replacement ROL AIR air compressor pump?

Match the manufacturer part number of the existing pump to the replacement. The ROL AIR pump model numbers in the 3G Electric catalog include PMP11K3GR, PMP11K8GR, PMP12K17GR, PMP12MK113GR, PMP12K35GR, PMP22K30GR, and PMP22K30CH. If the part number is not visible, confirm the horsepower, stage count, flow at rated pressure, and the mechanical mounting and pulley interface. The pump must match the motor horsepower and the tank pressure rating. For example, a 7.5 hp two-stage pump such as the PMP22K30GR delivers 19.1/24.0 cfm at 175 psi and is intended for continuous-duty industrial use.

What are the specifications of the ROL AIR wheeled portable electric air compressor?

The ROL AIR wheeled portable electric air compressor (SKU 35DZ69, MPN 5230K30-0095) has a 9-gallon tank, a 5 hp motor, and operates on 240V AC at 28 A. It is a wheelbarrow-style, splash-lubricated unit designed for mobility. It is suitable for powering pneumatic tools, inflating tires, and operating spray guns where a fixed air system is not available. The 9-gallon receiver supports intermittent demand. Because it is splash-lubricated, it does not require a pressurized oil circuit. Confirm the available electrical supply matches 240V AC, 28 A before installation.

Are ROL AIR compressor pumps splash-lubricated or oil-injected?

The ROL AIR compressor pumps listed by 3G Electric are splash-lubricated. This means lubrication is provided by the motion of the crankshaft and connecting rod dipping into an oil sump, rather than by a pressurized oil pump or oil injection into the compression chamber. Splash lubrication is common in reciprocating compressors of this size and simplifies maintenance because there is no oil pump, oil filter, or pressure lubrication circuit to service. The oil level must still be maintained within the specified range. Splash-lubricated pumps are not suitable for applications requiring oil-free air, such as breathing air or certain food and pharmaceutical processes.

What flow and pressure ratings are available in the ROL AIR pump range?

The ROL AIR pump range at 3G Electric covers approximately 1.3 cfm at 145 psi (PMP11K3GR, 0.75 hp) up to 23.5 cfm at 175 psi (PMP22K30CH, 7.5 hp, two-stage). Intermediate models include the PMP11K8GR at 2.66/3.72 cfm at 145 psi (1.5 hp), PMP12K17GR at 10.1/8.5 cfm at 150 psi (3 hp), PMP12MK113GR at 15.1/9.9 cfm at 145 psi (4 hp), PMP12K35GR at 22.6 cfm at 100 psi (7.5 hp, single-stage), and PMP22K30GR at 19.1/24.0 cfm at 175 psi (7.5 hp, two-stage). Flow ratings are typically given at two pressure points; confirm the rating at the pressure required by the application.

Can ROL AIR compressor pumps be used for continuous-duty industrial applications?

The two-stage 7.5 hp ROL AIR pumps, such as the PMP22K30GR and PMP22K30CH, are rated for continuous-duty industrial applications. They deliver 19.1/24.0 cfm and 23.5 cfm respectively at 175 psi. Continuous duty requires adequate cooling, correct oil level, and a motor and starter rated for the duty cycle. Single-stage pumps in the range are typically used for intermittent duty, such as powering pneumatic tools, inflation equipment, and spray guns. For any continuous-duty installation, confirm the pump's rated duty cycle and ensure the receiver, motor, and controls are matched to the pump's flow and pressure ratings.