Grinding Machines

184

Metal grinders for every need – CNC & conventional

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JONES AND SHIPMAN 1305 EIU Cylindrical Grinder

United Kingdom (Great Britain), LU3 3BL Luton

JONES AND SHIPMAN 1305 EIU Cylindrical Grinder

19/11/2024 12:48

Bids: 3

600 €

JONES AND SHIPMAN 1076 Cylindrical Grinder

United Kingdom (Great Britain), LU3 3BL Luton

JONES AND SHIPMAN 1076 Cylindrical Grinder

19/11/2024 15:05

Bids: 2

1,600 €

Serbia, 32000 Čačak

MAPE Grinding Machine

1,500 €

United Kingdom (Great Britain), LU3 3BL Luton

JONES AND SHIPMAN 1400 Surface Grinder

19/11/2024 11:53

Bids: 1

300 €

Portugal, 4465-587 Leça do Balio

NEBES S.K. Double Bench Grinder

100 €

United Kingdom (Great Britain), LU3 3BL Luton

AJH Double Stone Grinder

19/11/2024 12:01

Bids: 1

75 €

United Kingdom (Great Britain), LU3 3BL Luton

RJA M Double Stone Grinder

19/11/2024 11:44

Bids: 0

75 €

United Kingdom (Great Britain), LU3 3BL Luton

KEF Double Stone Grinder

19/11/2024 12:45

Bids: 0

50 €

United Kingdom (Great Britain), LU3 3BL Luton

MURAD Double Stone Grinder

19/11/2024 16:15

Bids: 0

50 €

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United Kingdom (Great Britain), LU3 3BL Luton

GRYPHON Double Stone Grinder

19/11/2024 12:00

Bids: 0

50 €

AB ARBOGA MASKINER EP 308 Double Stone Grinder

United Kingdom (Great Britain), LU3 3BL Luton

AB ARBOGA MASKINER EP 308 Double Stone Grinder

19/11/2024 11:43

Bids: 0

50 €

Belgium, 9870 Zulte

PEREL 4600-150 Bench Grinders (2x)

08/11/2024 16:05

Bids: 0

10 €

ZIERSCH & BALTRUSCH MR V800 S Precision rotary table surface grinding machine

Germany, 63450 Hanau

ZIERSCH & BALTRUSCH MR V800 S Precision rotary table surface grinding machine

14/11/2024 11:19

Bids: 0

5,900 €

METALLKRAFT FSM3060 Precision Surface Grinding Machine

Austria, 3242 Texing

METALLKRAFT FSM3060 Precision Surface Grinding Machine

Closes in: 1d 21h

Bids: 0

5,250 €

TOS HOSTIVAR BUC 63A/4000 Cylindrical grinding machine

Germany, 63450 Hanau

TOS HOSTIVAR BUC 63A/4000 Cylindrical grinding machine

14/11/2024 11:33

Bids: 14

8,100 €

STUDER S 40 - 2 universal cylindrical grinding machine

Germany, 96472 Rödental

STUDER S 40 - 2 universal cylindrical grinding machine

20/11/2024 10:51

Bids: 0

4,800 €

Play

Spain, 48610 Urduliz

GER S-80/40 Surface Grinder

07/11/2024 09:09

Bids: 0

4,100 €

Germany, 63450 Hanau

SCHNEIDER Carousel grinding machine

14/11/2024 11:44

Bids: 0

2,900 €

VEB MIKROSA SASL 125/1 E Centerless Grinding Machine

Netherlands, 1362 GH Almere

VEB MIKROSA SASL 125/1 E Centerless Grinding Machine

25/11/2024 14:04

Bids: 0

2,800 €

DYNETICS Dynaflow hl 30 pressure flow lapping machine

Switzerland, 2540 Grenchen

DYNETICS Dynaflow hl 30 pressure flow lapping machine

14/11/2024 11:34

Bids: 0

1,300 €

ARTHUR KLINK RISZ 10x1500 Internal Broaching Machine

Hungary, 8420 Zirc

ARTHUR KLINK RISZ 10x1500 Internal Broaching Machine

12/11/2024 11:12

Bids: 0

1,000 €

JUNG D 7 surface and internal grinding machine

Germany, 96472 Rödental

JUNG D 7 surface and internal grinding machine

20/11/2024 11:00

Bids: 0

750 €

Germany, 08280 Aue

ABA FFU 2000/60 Surface and Profile Grinding Machine

Direct Sales Buy directly from insolvencies, company liquidations, closures or modernisation

Disassembly & reassembly service
Worldwide logistics network
Individual consultation

Play

Hungary, 9200 Mosonmagyaróvár

OKAMOTO ACC-63XD Surface grinder

12/11/2024 10:33

Bids: 0

35,000 €

NOMOCO VSR 5-230 CNC 6 Centerless cylindrical grinding machine

Germany, 74405 Gaildorf

NOMOCO VSR 5-230 CNC 6 Centerless cylindrical grinding machine

12/11/2024 11:20

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

12/11/2024 11:19

Bids: 0

18,000 €

VOLLMER CL 200 CNC circular saw blade grinding machine

Play

Germany, 55483 Dickenschied

VOLLMER CL 200 CNC circular saw blade grinding machine

18/11/2024 10:00

Bids: 2

12,500 €

Play

Hungary, 9200 Mosonmagyaróvár

OKAMOTO ACC-106CA1 Surface Grinder

12/11/2024 10:35

Bids: 3

8,000 €

GEIBEL UND HOTZ RS 600 CNC CNC cylindrical grinding machine

Germany, 86757 Wallerstein

GEIBEL UND HOTZ RS 600 CNC CNC cylindrical grinding machine

7,000 €

MICROABRASIVES MA 900 PL Lapping Machine

Play

Hungary, 9200 Mosonmagyaróvár

MICROABRASIVES MA 900 PL Lapping Machine

12/11/2024 12:59

Bids: 0

5,000 €

MICROABRASIVES MA 600-3GR 3-Disc Lapping Machine

Hungary, 9200 Mosonmagyaróvár

MICROABRASIVES MA 600-3GR 3-Disc Lapping Machine

12/11/2024 12:57

Bids: 0

5,000 €

MICROABRASIVES MA600-3GR Lapping Machine

Hungary, 9200 Mosonmagyaróvár

MICROABRASIVES MA600-3GR Lapping Machine

12/11/2024 12:58

Bids: 0

5,000 €

GEIBEL & HOTZ FS 850 GT CC CNC Surface Grinder

Play

Hungary, 9200 Mosonmagyaróvár

GEIBEL & HOTZ FS 850 GT CC CNC Surface Grinder

12/11/2024 13:00

Bids: 2

5,250 €

MICROABRASIVES MA900/3PL Lapping Machine

Play

Hungary, 9200 Mosonmagyaróvár

MICROABRASIVES MA900/3PL Lapping Machine

12/11/2024 12:56

Bids: 0

5,000 €

KOENIG & BAUER Multimat 400 Centerless cylindrical grinding machine

Germany, 74405 Gaildorf

KOENIG & BAUER Multimat 400 Centerless cylindrical grinding machine

12/11/2024 11:17

Bids: 0

4,000 €

VOLLMER CX 100 automatic saw blade grinding machine

Germany, 55483 Dickenschied

VOLLMER CX 100 automatic saw blade grinding machine

18/11/2024 10:06

Bids: 2

3,700 €

G+ H FS 420VSC E Grinding machine FS 420 SC Economy

Play

Hungary, 9200 Mosonmagyaróvár

G+ H FS 420VSC E Grinding machine FS 420 SC Economy

12/11/2024 10:34

Bids: 0

3,000 €

DISKUS WERKE DWH 900/1000 Cylindrical Grinder

Spain, 48610 Urduliz

DISKUS WERKE DWH 900/1000 Cylindrical Grinder

07/11/2024 09:34

Bids: 0

2,600 €

Germany, 55483 Dickenschied

GÖCKEL knife sharpening machine

18/11/2024 10:26

Bids: 0

2,500 €

JONES & SHIPMAN 1076 Cylindrical grinding machine

Germany, 55483 Dickenschied

JONES & SHIPMAN 1076 Cylindrical grinding machine

18/11/2024 11:45

Bids: 0

2,000 €

TOS HOSTIVAR BHU 40-A/1000 Shaft Grinding Machine

Poland, 63-600 Kępno

TOS HOSTIVAR BHU 40-A/1000 Shaft Grinding Machine

19/11/2024 09:11

Bids: 1

1,950 €

VOLLMER CHP 20 H circular saw blade grinding machine

Play

Germany, 55483 Dickenschied

VOLLMER CHP 20 H circular saw blade grinding machine

18/11/2024 10:12

Bids: 2

1,900 €

Germany, 55483 Dickenschied

REFORM 4 knife sharpening machine

18/11/2024 10:24

Bids: 0

1,800 €

Germany, 46149 Oberhausen

KARSTENS K58 Cylindrical Grinder

12/11/2024 10:11

Bids: 0

1,500 €

Germany, 86732 Oettingen

ELB SW 5 VH Surface grinding machine

1,500 €

PROTH PSGS - 2045M Surface Grinding Machine

Germany, 91717 Wassertrüdingen

PROTH PSGS - 2045M Surface Grinding Machine

27/11/2024 14:11

Bids: 0

500 €

ELB SAPHIR 5VA II Surface grinding machine

Play

Germany, 58636 Iserlohn

ELB SAPHIR 5VA II Surface grinding machine

26/11/2024 11:29

Bids: 2

1,040 €

CHEVALIER FSG-3A1020 Surface grinding machine

Germany, 99734 Nordhausen OT Sundhausen

CHEVALIER FSG-3A1020 Surface grinding machine

21/11/2024 12:24

Bids: 0

990 €

Germany, 73235 Weilheim Teck

JUNG JF-520E-1 Surface grinding machine

19/11/2024 14:02

Bids: 4

1,240 €

GEIBEL & HOTZ FS 40 AC Surface Grinding Machine

Germany, 97944 Boxberg

GEIBEL & HOTZ FS 40 AC Surface Grinding Machine

19/11/2024 15:41

Bids: 0

990 €

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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.