Aryung Coolant Pump ACHK 2-30/2 (50 Hz)

The Aryung ACHK 2-30/2 is a 0.37 kW compact stainless steel multistage immersion pump for machine tool coolant systems, with 2 impeller stages in 3 chambers. The ACHK series is a medium-pressure multistage centrifugal pump with a compact build for machines where space in or above the tank is tight. Wetted parts are stainless steel and the mechanical seal uses FKM, so it holds up to heat and long run times. Typical uses: CNC lathes, machining centers, grinders, parts washers and filtration systems.

50 Hz build. This listing is for 50 Hz power. Most US plants run on 60 Hz, and the 60 Hz version of a given model can use a different motor and stage count. For 60 Hz, see the ACHK 2 60 Hz listings or ask us for the closest match.

Built to order: this model is made by Aryung in Korea and ships in about 30 days. Request a quote for price and lead time, or call 847-466-5459.

Specifications

Use

• Fluid must be clean and low viscosity, free of solid particles, abrasive sludge and fibers, and not explosive.
• If the fluid is heavier or thicker than water-soluble coolant, the motor may need to be upsized.
• Immersion depth can be extended with empty chambers. More empty chambers lowers the pressure.
• Fit a baffle between the discharge and suction sides of the tank so returning chips and air are not pulled straight back in.

Dimensions

Dimensions in mm.

Performance curve, 50 Hz

Read the curve for 2 stages. Curves are based on ISO VG 2 (2 cSt) fluid at 20°C.

Model number guide

ACHK = series, 2 = standard flow (2 m³/h), 30 = number of chambers x 10 (3 chambers), 2 = number of impeller stages. Codes follow for the seal material (SC, ST or TT) and voltage (2/2 = 200/220 V, 2/3 = 220/380 V, 4/4 = 415/440 V).

Downloads

• Aryung Coolant Pump Catalog 2026 (PDF), ACHK series
• All A-Ryung catalogs and 3D models

Specifications from Aryung's 2026 coolant pump catalog. Confirm voltage, outlet and dimensions with us before ordering.