Grinding Machines

179

Metal grinders for every need – CNC & conventional

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Current bid Current bid Closing time Closing time Number of bids Number of bids Location Location Relevance Relevance Name Name

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United Kingdom (Great Britain), LU3 3BL Luton

CHURCHILL RA Ring Grinder 12”

09/01/2025 14:18

Bids: 0

150 €

Liechtenstein, 9494 Schaan

AGATHON 175-DIA tool grinding machine

16/01/2025 11:02

Bids: 0

390 €

United Kingdom (Great Britain), LU3 3BL Luton

AJH Double Bench grinder

09/01/2025 16:21

Bids: 0

75 €

Liechtenstein, 9494 Schaan

AS Bench grinder

16/01/2025 10:22

Bids: 2

25 €

BLOHM PLANOMAT616 CNC surface grinding machine (overhauled)

Germany, 21035 Hamburg

BLOHM PLANOMAT616 CNC surface grinding machine (overhauled)

09/01/2025 10:09

Bids: 0

6,900 €

BLOHM PRECIMAT 306 Surface grinding machine

Germany, 58507 Lüdenscheid

BLOHM PRECIMAT 306 Surface grinding machine

17/01/2025 10:52

Bids: 5

1,800 €

KARSTENS K19 CNC internal and external cylindrical grinding machine

Germany, 73235 Weilheim Teck

KARSTENS K19 CNC internal and external cylindrical grinding machine

09/01/2025 12:03

Bids: 2

1,600 €

Czech Republic, 511 01 Turnov - Daliměřice

SAFAG 127 Tool Grinding Machine

1,000 €

JUNG D 7 Surface and Internal Grinding Machine

Germany, 96472 Rödental

JUNG D 7 Surface and Internal Grinding Machine

14/01/2025 10:56

Bids: 0

750 €

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NOMOCO VSR 5-230 CNC 6 Centerless cylindrical grinding machine

Germany, 74405 Gaildorf

NOMOCO VSR 5-230 CNC 6 Centerless cylindrical grinding machine

20/01/2025 11:36

Bids: 0

18,000 €

NOMOCO VSR 5-220 CNC 2 Centerless cylindrical grinding machine

Germany, 74405 Gaildorf

NOMOCO VSR 5-220 CNC 2 Centerless cylindrical grinding machine

20/01/2025 11:35

Bids: 0

18,000 €

Romania, 105600 Sat Bungetu, Comuna Vacaresti

MAGERLE F7 Surface Grinding Machine

23/01/2025 14:24

Bids: 0

4,200 €

HAUSER TRIPET TSCHUDIN TS 44 Roll Grinding Machine

Italy, region Vercelli

HAUSER TRIPET TSCHUDIN TS 44 Roll Grinding Machine

13/01/2025 10:04

Bids: 0

3,500 €

Germany, 85716 Unterschleißheim

JUNG HF50 Surface Grinder

22/01/2025 10:26

Bids: 0

3,300 €

Czech Republic, 511 01 Turnov - Daliměřice

TOS BN 102 C Tool Grinding Machine

3,000 €

NOMOCO VSR35-120-CNC4 CNC Centerless Cylindrical Grinding Machine

Germany, 78559 Gosheim

NOMOCO VSR35-120-CNC4 CNC Centerless Cylindrical Grinding Machine

09/01/2025 13:12

Bids: 0

2,900 €

Italy, region Torino

VIERO TX 5 Surface grinding machine

16/01/2025 10:48

Bids: 0

1,000 €

Germany, 97944 Boxberg

ABA FFU 1000/60 Surface Grinding Machine

09/01/2025 12:40

Bids: 3

2,200 €

Czech Republic, 517 21 Týniště nad Orlicí

TOS BB10 Centerless Cylindrical Grinder

23/01/2025 14:18

Bids: 0

1,800 €

Italy, region Vercelli

JONES & SHIPMAN 1400 X Surface Grinder

13/01/2025 10:05

Bids: 0

1,500 €

DONGGUAN CITY DERYI PLASTIC MECHANICAL CO. DYP-5SP-H24 Grinding machine

Hungary, 9200 Mosonmagyaróvár

DONGGUAN CITY DERYI PLASTIC MECHANICAL CO. DYP-5SP-H24 Grinding machine

2,000 €

VG MACHINES C-150-2K/2B Cylindrical Grinder

Bulgaria, 1346 Sofia, s. Voluyak

VG MACHINES C-150-2K/2B Cylindrical Grinder

3,000 €

Czech Republic, 517 21 Týniště nad Orlicí

TOS BU 16 Cylindrical Grinder

23/01/2025 14:21

Bids: 0

1,200 €

Germany, 73235 Weilheim Teck

MOORE G18 Coordinate grinding machine

09/01/2025 12:12

Bids: 1

1,200 €

ZIERSCH UND BALTRUSCH URS400 Ergonomy Internal and external cylindrical grinding machine

Play

Germany, 73235 Weilheim Teck

ZIERSCH UND BALTRUSCH URS400 Ergonomy Internal and external cylindrical grinding machine

09/01/2025 12:01

Bids: 1

1,200 €

Czech Republic, 511 01 Turnov - Daliměřice

MOTORPAL MAG BBZ 60 Grinding Machine

1,200 €

Germany, 73235 Weilheim Teck

VOUMARD 203L6 Internal grinding machine

09/01/2025 12:44

Bids: 0

1,000 €

Czech Republic, 517 21 Týniště nad Orlicí

STANKOIMPORT 3G71M Surface Grinder

23/01/2025 14:19

Bids: 0

1,000 €

FREUTEK LON0016 Universal Sharpener for Tools up to Ø 300 mm

Italy, 10156 Torino

FREUTEK LON0016 Universal Sharpener for Tools up to Ø 300 mm

14/01/2025 10:46

Bids: 0

993 €

Germany, 73235 Weilheim Teck

KARSTENS K19 Cylindrical Grinder

09/01/2025 13:00

Bids: 0

990 €

KOENIG & BAUER MULTIMAT Centreless cylindrical grinding machine

Play

Germany, 71522 Backnang

KOENIG & BAUER MULTIMAT Centreless cylindrical grinding machine

16/01/2025 12:38

Bids: 0

990 €

CINCINNATI MILACRON TwinGrip 3-300 Centreless grinding machine

Play

Germany, 71522 Backnang

CINCINNATI MILACRON TwinGrip 3-300 Centreless grinding machine

16/01/2025 12:32

Bids: 0

990 €

Play

Germany, 71522 Backnang

CINCINNATI MILACRON TwinGrip 3-300 Centreless grinding machine

16/01/2025 12:30

Bids: 0

990 €

Germany, 70191 Stuttgart

ELB AMB6/4HA Surface grinding machine

07/01/2025 11:39

Bids: 0

990 €

Germany, 73235 Weilheim Teck

MOORE 3 Coordinate grinding machine

09/01/2025 12:07

Bids: 0

990 €

Germany, 58507 Lüdenscheid

JUNG JF 520 DS Surface grinding machine

17/01/2025 11:00

Bids: 1

950 €

Czech Republic, 517 21 Týniště nad Orlicí

TOS BU 16 Cylindrical Grinder

23/01/2025 14:14

Bids: 0

950 €

Germany, 73235 Weilheim Teck

OKAMOTO ACC-64EXB Surface grinder

09/01/2025 11:39

Bids: 12

1,700 €

OKAMOTO PSG 63 UAN Surface grinding machine

Germany, 58507 Lüdenscheid

OKAMOTO PSG 63 UAN Surface grinding machine

17/01/2025 11:02

Bids: 0

750 €

Czech Republic, 74705 Opava - Kateřinky

TOS BUA16 Grinding Machine

21/01/2025 14:05

Bids: 0

750 €

Germany, 97944 Boxberg

BRAND FS 735 Surface grinding machine

14/01/2025 12:32

Bids: 0

750 €

Czech Republic, 517 21 Týniště nad Orlicí

TOS BDA 80 Tool Grinding Machine

23/01/2025 14:12

Bids: 0

700 €

ELB AMBASSADOR 6/4 VAI Surface grinding machine

Germany, 73577 Ruppertshofen

ELB AMBASSADOR 6/4 VAI Surface grinding machine

16/01/2025 11:59

Bids: 0

650 €

MSO FGH 200 Cylindrical grinding machine

Play

Germany, 15345 Garzau

MSO FGH 200 Cylindrical grinding machine

08/01/2025 10:37

Bids: 1

650 €

Germany, 79350 Sexau

TIMESAVERS WDC-7.5 dust collector

09/01/2025 14:02

Bids: 0

650 €

FREUTEK LON0020 Sharpener for Circular Blades Ø 60 - 300 mm

Italy, 10156 Torino

FREUTEK LON0020 Sharpener for Circular Blades Ø 60 - 300 mm

14/01/2025 10:13

Bids: 0

631 €

Germany, 58507 Lüdenscheid

JUNG HF 50 RD Surface grinding machine

17/01/2025 10:58

Bids: 0

600 €

Germany, 58507 Lüdenscheid

JUNG HF 50 RD Surface grinding machine

17/01/2025 10:56

Bids: 0

600 €

Germany, 73730 Esslingen

WALTER 30 NC Tool grinding machine

15/01/2025 12:52

Bids: 0

550 €

Germany, 71522 Backnang

KOENIG & BAUER MULTIMAT Centreless cylindrical grinding machine

16/01/2025 12:41

Bids: 0

550 €

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Overview

Definition: Grinding Machines
Levelling and adjusting with metal grinders
Grinding machine design
Types of grinder machines
What do I need to know when buying a used grinding machine?

Definition: Grinding Machines

Grinding machines have been known since ancient times. The original manual machines for shaping, sharpening or smoothing are used today as conventional or CNC grinding machines in various industries. Generally, grinding wheels and grinding belts reach higher accuracies than machining with geometrically undefined cutting edges. For this reason, tool grinding machines, circular grinders, surface grinders, bench grinders, etc., are essential for many stages of production for the industry and crafts. At Surplex you will find a great variety of grinding machines and its corresponding accessories such as used grinding wheels, wheel spindles and many more. High quality for the best price!

Levelling and adjusting with metal grinders

Grinding machines take over once the job of the cutting machine is complete. They remove tiny particles from the surface and can be used to achieve various objectives:

Surface planing
Achieving the right dimensions
Preparation for onward processing

Surface planing

In the metalworking industry, dimensions need to be precise down to a thousandth of a millimetre. Even a surface that feels smooth to the touch may be far too rough for the intended application. Milling machines and lathes, for instance, can produce outstanding dimensional accuracy, but the ‘final touch’ can only be applied using an appropriate grinding machine.

This particularly applies to surfaces subject to narrow tolerances: piston tracks in combustion engine cylinders, for example. They need to precisely and securely guide the piston rings within a wide temperature and speed range without jamming, which can only be ensured through use of a metal grinder.

Achieving the right dimensions

Grinding machines work without tools: all they need is the corresponding abrasive medium, such as types of paper and textiles with an abrasive surface. Grinding stones are also used and consist of a pressed and fired abrasive medium – mostly quartz sand. The finer the abrasive medium, the less surface that will be removed per grinding cycle.

And if solid abrasive media are insufficient to achieve the desired dimensions, fluid abrasive agents are another alternative. Wet polishing machines and lapping machines facilitate this type of abrasion.

Preparation for onward processing

Polishing and lapping processes are used for achieving the best dimensional accuracy and a consistently smooth surface, which is ideal for galvanising applications, for example. A product can only be galvanised or chrome-plated if it has been polished to a very high sheen.

A smooth surface is also essential when using painting systems or powder-coating machines and grinding machines may be used for this purpose as well.

Grinding machine design

In contrast to cutting machines, such as lathes or mills, grinding machines are designed in a very simple way. They comprise:

a work table
a guide for the grinding media carrier
a drive

The most widespread are round- and belt-shaped grinding media carriers, as well as roll-based grinding machines.

Round grinding media carriers are used in eccentric and plate grinders. They consist of a circular surface and the media are either moved radially or eccentrically. Radial grinding machines are designed very simply and are affordable.

Grinders with a belt-type abrasive medium carrier are called belt grinding machines. These types of grinder involve a grinding belt being tensioned between a drive roller and one or two tensioning rollers. They are used to remove outer layers from materials consistently and smoothly. Belt grinding machines remove a pre-defined quantity of material per work cycle, which makes it easy to maintain dimensional accuracy by spreading the abrasion process across different work cycles with varying grinding heights. Belt grinding machines are also designed to be simple and are thus easy to maintain.

Roll- or cylindrical grinding machines work using cylindrical abrasive media and are used to grind interior radii as well as surfaces.

A metal grinder always consists of cooling lubrication and powerful extraction. The particles removed from the workpiece need to be transported away as quickly as possible since fine metallic dust can quickly lead to heavy wear and tear. This particularly applies to iron-containing dusts, which increase in volume as they corrode and lead to further damage.

Types of grinder machines

There are many types of industrial grinders and CNC grinders available to metalworking operations of all sizes. See below for a selection of the most widely used types of metal grinding machines.

Bore grinding machines

Bore grinding machines are used to bore holes in metal, stone and wood. This type of machine is also offered by budget manufacturers and is designed for private use.

Professional bore grinding machines for industrial use are manufactured by FARMAN, FROEHLICH, KLINGEL, SCHANBACHER and SCHLUMBERGER.

Surface grinders

Surface grinders are used when an extremely flat surface is needed. They work using a grinding disc that is consistently guided across a workpiece. These machines are key to the tool-building and mould construction industries and can be relied on to achieve the required dimensional accuracy.

Surface grinders are manufactured by ABA, BLOHM , ELB-SCHLIFF, JUNG and KUGELMÜLLER.

Guideway grinding machines

Guideway grinding machines, as the name suggests, are used to grind guideways and are deployed wherever very large cutting machines are being manufactured. Mechanical guideways need to be very precise and the guideway grinders on offer today can achieve tolerances of 1/1000 of a millimetre across seven metres of length.

Guideway grinding machines primarily operate using grinding stones. The abrasion caused by the stone is factored into the pressing force to ensure the results achieved are consistent.

Well-known manufacturers of guideway grinding machines include MEUSER MOL, SHW, SCHMALTZ, WALDRICH-COBURG and KRAFT.

Double-disc grinding machines

Double-disc grinding machines are highly efficient pieces of kit. They enable workpiece processing to be performed simultaneously on the front and back side per work cycle.

Popular manufacturers of double-disc grinding machines include: DISKUS, GIUSTINA, KOYO, BESLY, C+B MACHINERY and JUNKER.

Internal grinding machines

Internal (cylindrical) grinding machines are used to create consistent and accurate internal radii. They work using roll-shaped grinding bodies. The internal grinding machines available today feature computerised numerical control (CNC) and can thus achieve the strictest of tolerances.

Manufacturers of internal grinding machines include: DANOBAT, HANKOOK, TRIPET, JUNG and VOUMARD.

Jig grinders

Jig grinders feature CN controls and a very small grinding body. They are used to grind away at specific points on a workpiece as required by the respective production process. As such, jig grinders feature a very similar design to CNC mills.

Jig grinders are some of the most expensive and complex grinding machines available and are produced by HAUSER, DECKEL, MOORE, MIKROMAT und KELLENBERGER.

Knife grinding machines

Knife grinding machines are used to sharpen blades, knives and scissors, as well as to grind chisels.

Knife grinding machines are made by BERNADO, KNECHT, GOWEIL, TORMEK and SCHEPPACH.

Cylindrical grinders & centreless grinding machines

Cylindrical grinders serve to grind profiles, pipes and round steels in a cylindrical manner. Tensioning cylindrical grinding machines use centre tips similar to the tail stocks of lathes. Centreless grinding machines, by contrast, can be used to indefinitely process profiles without any clamping process being required.

Major manufacturers of cylindrical grinders include STUDER, OMICRON, KARSTENS, SCHAUDT and HERMINGHAUSEN.

Bench grinders (one- and two-sided)

Bench grinders are standard grinding tools that are found in every workshop. A bench grinder can be used to sharpen, grind, plane, or deburr a workpiece by hand. They consist of a motor to which one or two grinding discs are attached. They are produced in single- and double-sided variants.

The best quality bench grinders can be acquired from ELEKTRA BECKUM, MAKITA, GREIF and REMA.

Stylus grinding machines

Stylus grinding machines are used to grind marking tools, such as styli. Their primary application, however, is to sharpen milling heads, which makes them very similar to bore grinding machines.

Popular manufacturers of stylus grinding machines include BERNARDO, DECKEL, HASBERG, KUHLMANN, PARPAS and SCRIPTA.

Crock grinding machines

A crock grinding machine is a device used to grind pots, or ‘crocks’ in the US vernacular. Its name comes from the way the tool is guided: the grinding disc is mounted in a pot-shaped guide. The drive, guiding mechanism and grinding head are attached to a pivoting arm. Crock grinding machines are ideal for grinding and changing dimensions on small workpieces and are operated by hand.

Manufacturers of crock grinding machines include: DELTA, EDEL, KUGELMÜLLER, UNICUM and NYBERG.

Roll grinding machines

A Roll grinding machines serve to precisely grind press rollers to the desired dimensions. They can be used to grind new, used and freshly turned rollers to achieve the required tolerance. Precision rollers can only be created using a roll grinding machine.

These machines are produced by HARKOV, HERKULES, KELLENBERGER, SCHAUDT, WALDRICH and ZIMMERMANN.

Tool-grinding machines

Tool-grinding machines are the predecessors of the jig grinder. They are used to manufacture and repair crimping tools and casting tools.

The most well-known manufacturers of this machine are: AGATHON, CLARKSON, DECKEL, EWAG, HAHN & KOLB, TRUMPF and WALTER.

What do I need to know when buying a used grinding machine?

The wide variety of grinders for sale does not make it easy to choose the right device, but there are some general tips that any prospective buyer of a second-hand grinding machine should know. The first consideration is what applications the (used) device should perform – a simple bench grinder is incomparable to a complex jig grinder.

Cleanliness and condition

A good starting point is to look at the general condition and cleanliness of the machine. Even with comprehensive rinsing and extraction units, grinding machines require a great deal of cleaning – daily, thorough cleaning is essential for any frequently used grinder. If the first thing you notice about a second-hand grinding machine is that it is soiled, you should definitely take a very close look at the machine from all aspects.

Unless you buy a metal grinding machine from a trader in used machinery who has taken care of the maintenance and repair tasks, it will be necessary to completely dismantle and clean the equipment. If those intending to repair/maintain a used metal-grinding machine are lacking in qualifications to do so, a specialist service provider should be commissioned.

Weakpoint: bearings

The weakest points in all used grinding machines are the bearings: the high speed experienced by the grinding spindles, the continual one-sided impact, and grinding heads that frequently lose their shape have a major effect on the bearings. It is therefore important that the bearings are inspected and, if there is the slightest amount of rattling, replaced. Once equipped with new bearings, a used metal grinder can continue operating for thousands of hours to come.

Those looking to buy a used grinding machine will find everything they need at Surplex. We regularly have second-hand grinders for sale. You can purchase machines via our portal where you will regularly find online auctions featuring a wide range of grinding machine types for a variety of needs and at attractive prices. The metal grinders for sale are generally in a good to very good condition.