Machine Tool Ecosystem

DiscFlow Chip Disc Filtration (CDF)

ChipFlow filtration is appropriate for high-demand coolant cleaning. Looking for medium filtration solution with an easy retrofit to an existing tank? The PureFlow filtration system might be a better fit.

Learn More
DiscFlow Chip Disc Filtration (CDF)

Coolant Filtration Simplified

The Chip-Disc Filtration (CDF) unit combined with chip conveyors work together to form a single functioning unit, although they work completely independently of each other. The filter system takes care of separating the chips removed by the conveyor from the finest impurities. After the coolant has been cleaned, it is returned to the production process to continue use.

The patent protected Chip-Disc Filtration (CDF) technology achieves high levels of filtration (down to 25 microns nominal, with additional filtration down to 5-10 microns) without requiring two separate belts. Our patented disc design provides a direct CNC coolant flow path into the coolant reservoir. We offer through-spindle, high-pressure pump configurations utilizing cartridge, bag, or cyclonic filters.

This affordable, versatile approach to chip removal works with any type of material, both in water- and oil-based coolant, and with a scraper belt or hinge belt conveyor. Mounted externally for easy access, the CDF is the simplest approach to coolant filtration on the market today.

Cast Iron Filtration Made Easy

For the notoriously difficult cast iron applications, the addition of a solid rotating magnetic drum can be incorporated for efficient removal of floating chips, fines and sludge.

Features
Main Flow Coolant Pumps
High-Pressure Pump: 300-1000 PSI (21-69 bar)
Backwash CDF Pump
Disc Access Cover Panels
Coolant Tank
Control Box: shown with HMI controls
Low Inlet Height
Additional Filtration Options
Options
Belt Type Can be used with scraper belt or hinge belt
Filter Disc Diameter 10" (254 mm), 12" (305 mm), 16" (406 mm)
Single or Multiple Discs Depending on coolant flow rate
Solid Rotating Magnetic Drum For collecting cast iron sludge/swarf
Cartridge or Cyclonic Filters For filtration down to 10 microns
Air Knife For removing sticky chips from belt
Bludge Pot For easy sludge/swarf disposal
DiscFlow Chip Disc Filtration (CDF)

Key Advantages

ONE BELT SYSTEM FOR ALL CHIP TYPES

Unlike many nylon mesh drum systems, CDF technology does not need two belt systems to handle stringy chips, and can be used with hinge or scraper belts.

PATENTED DISC FILTRATION DESIGN

Hennig's innovative design provides a direct coolant flow path into the coolant tank reservoir, and filters a wide variety of materials both in water- and oil-based coolants.

CONTINUOUS SELF-CLEANING OPERATION

Continuous spraying of filtered coolant against the stainless steel media removes fines and chips. no outside source such as air or steam is used.

STAINLESS STEEL MEDIA

Handles momentary or continuous heavy chip loads from 25-120 microns nominal, which can be a problem with nylon mesh, drum filters.

DiscFlow Chip Disc Filtration (CDF)

How It Works

  1. Coarse Chip Removal

    The hinge- or scraper-belt collects larger chips and particles for discharge into the chip hopper. Removing coarse chips before they reach the disc filter keeps them from bundling and jamming the system, which fosters extremely efficient fine particle filtration.

  2. Fine Particle Filtration

    Filtering Coolant: Small particles that escape the belt naturally migrate with the coolant flow to the rotating disc filter. There, particles down to 25 microns are collected and the cleaned coolant flows back into your tank. Removing Particles: The collected particles rotate with the disc filter and are lifted out of the coolant, towards the backwash spray. There, the particles are blasted onto the belt with a backwash spray and removed along with the coarse chips.

  3. Cast Iron Micro-Filtration

    Collecting and Discarding Iron Fines If you're looking to filter cast iron fines, the addition of a solid rotating magnetic drum allows for cast iron fines to be collected and removed from the coolant. When enough particles have collected on the magnetic drum to form a heavy sludge, the sludge drops onto the dry conveyor incline and is discarded along with the coarse chips and particles that have been collected on the disc filter into the chip hopper.

Machine Uptime Calculator

How Much Are Chip Stops Costing You?

Every time an operator stops a machine to clear chips, you lose production revenue. Quantify the problem — then see how a conveyor pays for itself.

Your Setup
$
The Chip Problem
min
Annual Impact of Manual Chip Clearing
750 hrs
Production Hours Lost / Year
$131K
Annual Lost Revenue
$112K
Recoverable with Conveyor
See Full ROI Breakdown

Based on 250 working days/yr and 85% recovery — conveyors eliminate most manual chip clearing stops.

Still Looking for Answers?

Frequently Asked Questions

Coolant is contaminated by processing residues such as chips, dust, etc. and shortens the life of pumps and valves within coolant systems. Coolant filtration is used to remove these impurities/contamination, and improve your tool life and the quality of the parts being produced. Additional advantages include: increased machining speed, reduced downtime, and decreased production costs. 

Various methods are available for cleaning coolants, including cartridge filtration, bag filters, cyclonic filters, paper filtration belts, and magnetic filtration. Learn more about coolant filtration here.

Coolants can be water-based, synthetic, or oil-based. Coolant is used in industrial production with CNC machine tools. They cool and lubricate the workpiece to be machined and thus enable economical operation.

In the CDF (Chip-Disc Filtration) process, the contaminated coolant passes through a stainless-steel medium that removes the particles and allows only the clean coolant to pass through. This can filter down to 25-30 microns of nominal filtration. The use of the above-mentioned products can filter down through spindle-type work.

From the Resource Hub

Related Content

The Rundown on Hennig’s Integrated Through-Spindle Coolant System
Blogs Chip & Coolant Management Product Selection

The Rundown on Hennig’s Integrated Through-Spindle Coolant System

Through-spindle coolant systems hit the bullseye when it comes to reducing the friction between the tool and the workpiece during machining. But contaminants in the coolant can work against you, wearing down tools and ruining the surface finish of the part. That’s why Hennig developed an integrated high-pressure coolant systems for through-spindle coolant applications.

Chip Disc Filtration: The Unsung Hero of Lights Out Manufacturing Success
Blogs Chip & Coolant Management Product Selection

Chip Disc Filtration: The Unsung Hero of Lights Out Manufacturing Success

If lights out manufacturing is your goal, Hennig's chip filtration expertise will help you achieve it with our patented Chip Disc Filtration (CDF) system.

Why You Should Select a VFD Control for Your Hennig Conveyor
Blogs Chip & Coolant Management Product Selection

Why You Should Select a VFD Control for Your Hennig Conveyor

Due to the ever-increasing demand for improved chip conveyor functionality and efficiency, Hennig has offered VFD's (Variable Frequency Drives) as a standard for most new conveyor products for several years. Learn some of the many advantages to this approach in conveyor design.