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GRAYMILLS

Graymills is a manufacturer of industrial fluid handling and cleaning equipment, with a product history that includes parts washers, coolant pumps, and ultrasonic cleaners. The company's machine tool pump line, represented in 3G Electric's catalog by the IMV series and related immersion coolant pumps, is designed for circulating cutting fluids in machining operations such as milling, turning, and grinding. These pumps are immersion-type units, meaning the pump body is submerged directly in the coolant sump or tank, which simplifies installation and reduces the need for external piping. The IMV series covers a range of motor sizes from 1/8 hp to 1 hp, with flow rates from 10 gpm to 55 gpm and port sizes from 3/8" NPT to 1" NPT. All models in this family are rated for fluids up to 500 SUS viscosity, making them suitable for neat oils, water-soluble coolants, and other machining fluids within that viscosity range. Voltage options include 115/230V AC and 230/460V AC, accommodating common industrial power configurations. The pumps are constructed for continuous duty in machine tool environments, where exposure to chips, fines, and fluid contamination is routine. 3G Electric supplies Graymills immersion coolant pumps as part of its broader catalog of industrial burners, pumps, gas controls, and related equipment. For plant engineers and maintenance managers, 3G Electric provides access to the Graymills pump line with logistics support for global delivery. The catalog includes multiple SKUs covering the IMV25, IMV50, and higher-capacity models, allowing buyers to match pump specifications to specific machine tool requirements. 3G Electric's role is to interpret demand for these pumps, maintain inventory visibility, and coordinate shipment to industrial facilities worldwide. The Graymills pumps listed by 3G Electric are identified by manufacturer part numbers such as IMV25-F, IMV25-E, and IMV50-E, along with SKU references for ordering. Each pump is specified with its motor horsepower, maximum flow rate, viscosity limit, port size, and voltage, enabling procurement specialists to verify compatibility with existing machine tools. The immersion design means the pump can be dropped into an existing sump without extensive modification, which is relevant for retrofit and replacement scenarios. For machining centers, lathes, and grinding machines, the pump's role is to deliver coolant to the cutting zone and return it to the tank, maintaining flow and temperature control. Graymills has been associated with industrial cleaning and fluid handling equipment for decades, and the machine tool pump line reflects that focus on durable, serviceable components. 3G Electric does not manufacture these pumps; it distributes them as part of its industrial equipment offering. The information provided in 3G Electric's catalog entries is intended to help technical buyers select the correct model based on flow, viscosity, port size, and voltage. For applications requiring higher flow or different viscosity ranges, buyers should review the full Graymills pump lineup or contact 3G Electric for assistance with model selection. The pumps are typically used in metalworking facilities, job shops, and production machining operations where reliable coolant circulation is necessary to maintain tool life and surface finish. 3G Electric's global shipping capabilities mean these pumps can be sourced from anywhere and delivered to industrial sites regardless of location.

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About GRAYMILLS

Graymills is a manufacturer of industrial fluid handling and cleaning equipment, with a product history that includes parts washers, coolant pumps, and ultrasonic cleaners. The company's machine tool pump line, represented in 3G Electric's catalog by the IMV series and related immersion coolant pumps, is designed for circulating cutting fluids in machining operations such as milling, turning, and grinding. These pumps are immersion-type units, meaning the pump body is submerged directly in the coolant sump or tank, which simplifies installation and reduces the need for external piping. The IMV series covers a range of motor sizes from 1/8 hp to 1 hp, with flow rates from 10 gpm to 55 gpm and port sizes from 3/8" NPT to 1" NPT. All models in this family are rated for fluids up to 500 SUS viscosity, making them suitable for neat oils, water-soluble coolants, and other machining fluids within that viscosity range. Voltage options include 115/230V AC and 230/460V AC, accommodating common industrial power configurations. The pumps are constructed for continuous duty in machine tool environments, where exposure to chips, fines, and fluid contamination is routine. 3G Electric supplies Graymills immersion coolant pumps as part of its broader catalog of industrial burners, pumps, gas controls, and related equipment. For plant engineers and maintenance managers, 3G Electric provides access to the Graymills pump line with logistics support for global delivery. The catalog includes multiple SKUs covering the IMV25, IMV50, and higher-capacity models, allowing buyers to match pump specifications to specific machine tool requirements. 3G Electric's role is to interpret demand for these pumps, maintain inventory visibility, and coordinate shipment to industrial facilities worldwide. The Graymills pumps listed by 3G Electric are identified by manufacturer part numbers such as IMV25-F, IMV25-E, and IMV50-E, along with SKU references for ordering. Each pump is specified with its motor horsepower, maximum flow rate, viscosity limit, port size, and voltage, enabling procurement specialists to verify compatibility with existing machine tools. The immersion design means the pump can be dropped into an existing sump without extensive modification, which is relevant for retrofit and replacement scenarios. For machining centers, lathes, and grinding machines, the pump's role is to deliver coolant to the cutting zone and return it to the tank, maintaining flow and temperature control. Graymills has been associated with industrial cleaning and fluid handling equipment for decades, and the machine tool pump line reflects that focus on durable, serviceable components. 3G Electric does not manufacture these pumps; it distributes them as part of its industrial equipment offering. The information provided in 3G Electric's catalog entries is intended to help technical buyers select the correct model based on flow, viscosity, port size, and voltage. For applications requiring higher flow or different viscosity ranges, buyers should review the full Graymills pump lineup or contact 3G Electric for assistance with model selection. The pumps are typically used in metalworking facilities, job shops, and production machining operations where reliable coolant circulation is necessary to maintain tool life and surface finish. 3G Electric's global shipping capabilities mean these pumps can be sourced from anywhere and delivered to industrial sites regardless of location.

Common Applications

  • Machining centers — Graymills IMV25-F or IMV25-E immersion pump for circulating coolant at 23 gpm in milling and turning operations.
  • Grinding machines — Graymills 1/2 hp immersion pump (35 gpm, 3/4" NPT) for delivering coolant to grinding zones and flushing fines.
  • Lathes — Graymills 1/8 hp immersion pump (10 gpm, 3/8" NPT) for low-flow coolant circulation in small turning applications.
  • High-volume milling — Graymills 1 hp immersion pump (55 gpm, 1" NPT) for large machining centers requiring high coolant flow.
  • Retrofit and replacement — Graymills IMV50-E (1/2 hp, 35 gpm, 115/230V) as a drop-in replacement for existing sump-mounted pumps.
  • Job shops with mixed voltage — Graymills dual-voltage pumps (115/230V or 230/460V) to match available power across different machines.

Frequently asked questions

Common questions about GRAYMILLS from 3G Electric.

What is the maximum viscosity that Graymills IMV series immersion coolant pumps can handle?

The Graymills IMV series immersion coolant pumps listed by 3G Electric are rated for fluids up to 500 SUS (Saybolt Universal Seconds) viscosity. This covers many common water-soluble coolants and light neat oils used in machining operations. For fluids above 500 SUS, a different pump model or a positive displacement pump may be required. Buyers should verify the actual viscosity of their cutting fluid at operating temperature, as viscosity can vary with temperature and contamination. The 500 SUS limit applies across the IMV25, IMV50, and related models shown in the catalog.

What motor sizes and flow rates are available in the Graymills machine tool pump line?

The Graymills machine tool pumps in 3G Electric's catalog span motor sizes from 1/8 hp to 1 hp. Flow rates range from 10 gpm for the 1/8 hp models to 55 gpm for the 1 hp model. Port sizes range from 3/8" NPT to 1" NPT. Voltage options include 115/230V AC and 230/460V AC. Specific models include the IMV25-F (1/4 hp, 23 gpm, 230/460V), IMV25-E (1/4 hp, 23 gpm, 115/230V), and IMV50-E (1/2 hp, 35 gpm, 115/230V). Higher-capacity models such as the 1 hp unit deliver 55 gpm with 1" NPT ports.

Can Graymills immersion coolant pumps be used with water-based coolants?

Yes, Graymills immersion coolant pumps are designed for circulating cutting fluids, which include water-soluble coolants and neat oils. The immersion design allows the pump to operate directly in the coolant sump. However, water-based coolants can promote corrosion and bacterial growth if not maintained. The pumps themselves are constructed with materials suitable for typical machining fluid exposure, but users should follow the manufacturer's recommendations for fluid compatibility and maintenance. Regular cleaning of the sump and pump intake helps prevent clogging from chips and fines. For specific fluid compatibility questions, consult Graymills documentation or contact 3G Electric.

What is the difference between the Graymills IMV25-F and IMV25-E models?

The Graymills IMV25-F and IMV25-E are both 1/4 hp immersion coolant pumps with a maximum flow of 23 gpm and a 500 SUS viscosity limit. The primary difference is the voltage: the IMV25-F operates on 230/460V AC, while the IMV25-E operates on 115/230V AC. Both have 1/2" NPT ports. The choice between them depends on the available power supply at the installation site. The IMV25-E is suitable for facilities with 115V or 230V single-phase or three-phase power, while the IMV25-F is intended for higher-voltage industrial power systems. 3G Electric lists both models with their respective SKUs.

How do I select the right Graymills pump for my machining center?

Selecting a Graymills pump for a machining center involves matching the pump's flow rate, port size, viscosity rating, and voltage to the machine's requirements. Start by determining the required coolant flow at the cutting zone, which depends on the machining operation and tooling. Then verify the viscosity of the cutting fluid at operating temperature does not exceed 500 SUS. Check the available power supply to choose between 115/230V and 230/460V models. Port size should match existing piping or hose connections. For replacement, the original pump's model number is the best reference. 3G Electric's catalog entries include these specifications to aid selection.

Are Graymills immersion pumps suitable for continuous duty in grinding applications?

Graymills immersion coolant pumps are used in grinding machines as well as milling and turning operations. The pumps are designed for continuous circulation of cutting fluids, which is typical in grinding where coolant is essential for cooling the workpiece and flushing chips. The 500 SUS viscosity limit accommodates many grinding fluids. However, grinding generates fine swarf that can clog pump intakes, so proper filtration or settling is recommended upstream of the pump. The pump's immersion design allows it to be placed in the sump, but the intake should be protected from direct swarf accumulation. Regular maintenance is required to ensure reliable operation.