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GRAYMILLS

Graymills is a manufacturer of industrial fluid-handling equipment, with a primary focus on coolant pumps for machine tools. The company, based in the United States, has a long history in the metalworking industry, supplying pumps designed to circulate cutting fluids, coolants, and lubricants in machining operations. Graymills product families include suction-style coolant pumps and immersion coolant pumps, both of which are engineered for continuous-duty applications in CNC lathes, milling machines, grinders, and other metal-cutting equipment. The pumps are built to handle fluids with viscosities up to 500 SUS, with flow rates ranging from 10 gpm to 55 gpm depending on the model. Motor options include single-phase (115/230V AC) and three-phase (230/460V AC) configurations, with horsepower ratings from 1/8 hp to 1 hp. Port sizes are available in 3/8" NPT, 3/4" NPT, and 1" NPT, allowing integration with standard piping systems. Graymills pumps are typically constructed with corrosion-resistant materials, such as cast iron or stainless steel components, to withstand exposure to water-based coolants and oils. The immersion-style pumps are designed for direct submersion in coolant tanks, while suction-style pumps are mounted externally with a suction line. Both types feature a compact, vertical design that minimizes floor space requirements. 3G Electric stocks a range of Graymills coolant pumps, including models from the IMS (suction) and IMV (immersion) series, with multiple voltage and horsepower variants. The inventory covers common configurations used in industrial maintenance and OEM replacement applications. 3G Electric provides datasheets and logistics support for these pumps, enabling procurement specialists and plant engineers to source the correct model for their equipment. The pumps are suitable for use in metalworking facilities, automotive manufacturing, aerospace machining, and general fabrication shops where reliable coolant circulation is required. Graymills pumps are recognized for their straightforward installation and serviceability, with replaceable motors and impellers available for field maintenance. The product line does not include specialized certifications beyond standard electrical ratings, and the pumps are intended for use in ambient industrial environments. 3G Electric ships Graymills pumps globally, with no geographic restrictions on availability.

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About GRAYMILLS

Graymills is a manufacturer of industrial fluid-handling equipment, with a primary focus on coolant pumps for machine tools. The company, based in the United States, has a long history in the metalworking industry, supplying pumps designed to circulate cutting fluids, coolants, and lubricants in machining operations. Graymills product families include suction-style coolant pumps and immersion coolant pumps, both of which are engineered for continuous-duty applications in CNC lathes, milling machines, grinders, and other metal-cutting equipment. The pumps are built to handle fluids with viscosities up to 500 SUS, with flow rates ranging from 10 gpm to 55 gpm depending on the model. Motor options include single-phase (115/230V AC) and three-phase (230/460V AC) configurations, with horsepower ratings from 1/8 hp to 1 hp. Port sizes are available in 3/8" NPT, 3/4" NPT, and 1" NPT, allowing integration with standard piping systems. Graymills pumps are typically constructed with corrosion-resistant materials, such as cast iron or stainless steel components, to withstand exposure to water-based coolants and oils. The immersion-style pumps are designed for direct submersion in coolant tanks, while suction-style pumps are mounted externally with a suction line. Both types feature a compact, vertical design that minimizes floor space requirements. 3G Electric stocks a range of Graymills coolant pumps, including models from the IMS (suction) and IMV (immersion) series, with multiple voltage and horsepower variants. The inventory covers common configurations used in industrial maintenance and OEM replacement applications. 3G Electric provides datasheets and logistics support for these pumps, enabling procurement specialists and plant engineers to source the correct model for their equipment. The pumps are suitable for use in metalworking facilities, automotive manufacturing, aerospace machining, and general fabrication shops where reliable coolant circulation is required. Graymills pumps are recognized for their straightforward installation and serviceability, with replaceable motors and impellers available for field maintenance. The product line does not include specialized certifications beyond standard electrical ratings, and the pumps are intended for use in ambient industrial environments. 3G Electric ships Graymills pumps globally, with no geographic restrictions on availability.

Common Applications

  • CNC machining centers — Graymills IMV immersion pumps for coolant recirculation in enclosed machine tools
  • Surface grinding operations — Graymills IMS suction pumps for flood coolant delivery on grinding machines
  • Automotive parts manufacturing — Graymills IMV50 series pumps for coolant systems in transfer lines
  • Aerospace component fabrication — Graymills IMS75 pumps for high-flow coolant in milling operations
  • General metal fabrication — Graymills IMS08 pumps for small machine tools and bench-top equipment

Frequently asked questions

Common questions about GRAYMILLS from 3G Electric.

What is the difference between Graymills suction-style and immersion coolant pumps?

Graymills suction-style pumps (IMS series) are mounted externally to the coolant tank and draw fluid through a suction line, making them suitable for applications where the pump cannot be submerged. Immersion-style pumps (IMV series) are designed to be directly submerged in the coolant tank, with the motor above the fluid level. Both types use a vertical shaft design and are available in similar flow and voltage configurations. The choice depends on tank design and installation constraints.

What is the maximum viscosity Graymills coolant pumps can handle?

Graymills coolant pumps are rated for fluids with a maximum viscosity of 500 SUS (Saybolt Universal Seconds). This covers most water-based coolants, light oils, and synthetic cutting fluids used in metalworking. For higher-viscosity fluids, such as heavy gear oils, these pumps are not recommended. Always verify the fluid viscosity against the pump specifications before installation.

What voltage options are available for Graymills pumps from 3G Electric?

3G Electric stocks Graymills pumps in single-phase 115/230V AC and three-phase 230/460V AC configurations. For example, the IMS50-E is a 1/2 hp suction pump with 115/230V single-phase, while the IMS50-F is the same pump in 230/460V three-phase. Voltage selection should match the machine tool's electrical supply. Datasheets are available to confirm wiring requirements.

What port sizes are available on Graymills coolant pumps?

Graymills coolant pumps from 3G Electric are available with NPT port sizes of 3/8", 3/4", and 1". The port size corresponds to the pump's discharge connection. For example, the IMS08-E has a 3/8" NPT port, while the IMV100-F has a 1" NPT port. Select the port size based on the existing piping or hose connections in your coolant system.

Can Graymills pumps be used for continuous-duty applications?

Yes, Graymills coolant pumps are designed for continuous-duty operation in machine tool applications. The motors are rated for continuous service, and the pump construction includes sealed bearings and thermal overload protection in some models. However, ensure the pump is not run dry, as this can damage the impeller and seals. Regular maintenance, such as checking for debris in the suction strainer, is recommended.

Does 3G Electric supply GRAYMILLS products?

Yes — 3G Electric (S) Pte. Ltd. supplies GRAYMILLS products. We stock the GRAYMILLS catalog and supply genuine factory-original products with full manufacturer warranty and technical support.