Water-Based Synthetic Coolant E-308

E-308 is a mineral-oil-free fully synthetic heavy-duty metalworking coolant designed for high-precision and high-load industrial machining scenarios. Formulated with premium extreme pressure anti-wear additives, multi-functional anti-corrosion inhibitors, wetting dispersants and proprietary synthetic lubrication composite, this coolant balances ultra-high cooling efficiency, heavy load EP lubricity and long-term metal anti-rust protection all in one formula.

It delivers stable processing performance for turning, deep hole drilling, tapping, grinding and other cutting processes, and is widely compatible with carbon steel, stainless steel, alloy steel, cast iron, aluminum alloy and copper alloy workpieces. Different from semi-synthetic micro-emulsion coolants, E-308 contains no mineral oil base liquid, with cleaner residues and easier post-workpiece cleaning, ideal for automated precision production lines.

Core Performance Advantages of ROLITOM E-308

1. Powerful extreme pressure lubrication system effectively reduces cutting resistance during heavy processing, lowers tool abrasion and avoids tool chipping and thermal burn on workpieces. It greatly extends the service life of carbide cutters, drills and taps, perfectly matching deep-hole gun drilling and high-load tapping production.

2. Multi-metal anti-rust and anti-tarnish protection technology provides lasting rust prevention for all ferrous materials, while preventing oxidation and discoloration of aluminum and copper non-ferrous metals. It maintains complete surface protection for semi-finished products during inter-process storage, effectively reducing product rejection rates caused by rust stains.

3. Built-in high-efficiency wetting dispersants quickly separate metal swarf and floating tramp oil inside the machine sump. The fluid leaves only thin residual film on workpiece surfaces without hard scale accumulation, simplifying post-process cleaning steps and cutting daily equipment maintenance costs for machining factories.

4. Outstanding hard water adaptability and low-foam formula eliminate overflow foam interference under high-flow pump circulation. It can keep stable performance in both soft and hard industrial water, extend the full fluid replacement cycle and reduce long-term factory operating costs.

Technical Paramete

Application Matching Range

Applicable Workpiece Materials

1. Ferrous metals: Carbon steel, stainless steel, alloy steel, cast iron

2. Non-ferrous metals: Aluminum alloys, copper alloys

Note: Frequent chip cleaning is required when processing magnesium alloys to avoid chemical oxidation.

Supported Machining Processes

Turning, milling, planing, deep-hole gun drilling, tapping, precision surface grinding and all general metal cutting operations.

Matching Production Equipment

CNC machining centers, automatic lathes, vertical milling machines, drill presses, continuous automated production lines and centralized cooling circulation systems.

Mixing & Complete System Maintenance Guidelines

Dilution Preparation Rules

For standard light and medium load cutting: Mix 1 part ROLITOM E-308 concentrate with 19 parts clean tap water to reach 5% working concentration.

For heavy-duty deep hole drilling, hard alloy cutting and tapping processes: Adjust dilution ratio to 1:8 ~ 1:10 for 10%-12.5% concentration.

Standard mixing operation: Fill the cooling tank with clean water first, start the circulation pump, then slowly add coolant concentrate to achieve even mixing without local concentration imbalance.

Daily & Periodic Maintenance Steps

Thoroughly clean the machine sump, internal pipelines and filter devices before filling new E-308 coolant to prevent cross-contamination with other old cutting fluids, which will damage fluid stability.Regularly test the pH value and concentration of working fluid; supplement neat concentrate or clean water timely to maintain the standard parameter range of pH 8.0–8.5.

Install matched filtration equipment to continuously remove fine metal particles, further extend the overall service life of the coolant.

Service life reference: 3–6 months under normal machining load. Replace the entire tank fluid immediately once the liquid turns turbid, produces persistent foam or loses anti-rust performance.

Packaging, Storage & Shelf Life

Standard packaging options: 18L plastic drums, 200L steel drums; customized 1000L IBC tote tanks are available for large factory bulk orders.

Standard storage specifications: Keep sealed barrels inside cool and dry covered warehouses, stay away from direct sunlight and high-temperature heat sources. Tighten barrel lids fully after partial use to avoid water and impurity infiltration.

Shelf life: 12 months for unopened original drums stored under recommended indoor conditions.

FAQ

Q1: What materials can ROLITOM E-308 fully synthetic coolant process?

A1: It covers carbon steel, stainless steel, alloy steel, cast iron, aluminum alloy and copper alloy. For magnesium alloy processing, chips need to be cleaned frequently to prevent oxidation.

Q2: What dilution ratio should I use for daily CNC machining?

A2: General light & medium load machining adopts 1:19 (5%) dilution ratio; deep hole drilling, tapping and heavy cutting use 1:8 ~ 1:10 (10%-12.5%) concentration.

Q3: Is E-308 compatible with hard industrial water? Will it produce lots of foam?

A3: This formula has strong hard water stability and low foam characteristics, no foam overflow under high-speed pump circulation, stable in soft and hard water.

Q4: Can I mix E-308 with my existing cutting fluid?

A4: It is strictly forbidden to mix with other types or brands of MetalWorking Fluids, which will destroy the fluid system and cause stratification, foaming and poor rust resistance.

Q5: How long is the service cycle of this full synthetic coolant in the machine sump?

A5: Under normal production load, the service life reaches 3–6 months. Replace the liquid once turbidity, persistent foam or rust failure appears.

Q6: What packaging sizes are available for bulk factory orders?

A6: We supply 18L small plastic barrels, 200L steel drums, and customizable 1000L IBC totes for large-scale production line procurement.

Q7: What equipment is E-308 suitable for?

A7: It matches CNC machining centers, lathes, milling machines, drill presses and automated continuous production lines, also supports factory centralized cooling circulation systems.