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belt grinder motor choice and speed control

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Belt grinder: motor choice and speed control All About ...

29/11/2009  From what I've read (and my own experience), I definitely wish this grinder to have a variable speed motor. I also know from experience that I want a motor rated around 1.5 to 2 hp (roughly 1 to 1.5 kW) and my preference would be the 2 hp motor. This desire partly comes from numerous posts on the web concerning knife grinders, for which this design is often used with 2 inch wide belts that are ...

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DIY Knifemaker's Info Center: Belt Grinder Motor Guide

Of course changing speed of the belt can be accomplished with different ratios of sheaves (pulleys) but the motor itself is only one speed. One more common exception is a two speed pump motor found in hot tubs. This type of motor will be two pole and four pole with the wires coming to the terminal box to to change the speed. The speeds will be for example 1800 or 3600 RPM.

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Motors and VFDs for Belt Grinder Applications

Magnets like to attract steel. Open motors are a bad choice for a belt grinder. Sealed or enclosed motors are best suited to this environment. Look for the letters TEFC (Totally Enclosed Fan Cooled) on the product description. MOTOR RULE 3: The motor shall have sufficient power to do the job. Power is a key consideration when looking for a motor for a grinder. Some would say more is better ...

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Help choosing motor for belt grinder - Practical Machinist

10/11/2017  A few years ago I built a KMG copy 2x72" belt grinder. It works fine except I would like to control the speed. I was looking at some VFDs and 3PH motors and wonder if it would be a good choice. Would 2 HP be enough power. 2 HP, 36 RPM, WEG Motor with 2 HP, 23 Volts, Teco VFD at Dealers Industrial Or maybe this one.

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Belt Grinder - Motor Choice - The Home Shop Machinist ...

Belt Grinder - Motor Choice 02-11-2020, 12:38 PM. I've been thinking about a bigger belt grinder for a while. I get a lot of use out of the little 1x30. I think I use it almost as much as all other sanders and grinders combined. Ok, I sharpen machine tools with the bench grinder, and I have 5 (or 6 ?) angle grinders, so that previous statement might be exaggerated, but I use it a lot. Its ...

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Recommendation? - Motor for 2x72 belt grinder ...

12/08/2019  The rule-of-thumb for belt grinder motor power in industry is 1 HP per inch of belt width (750W per 25mm). Standard industrial motors tend to be designed for a maximum continuous mechanical speed of 3600 RPM to cover 2-pole motors running on 60 Hz mains in those parts of the world that use it. The actual plated speed of the motor will depend on the number of poles in the windings and the

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Can You Slow Down a Bench Grinder? (Helpful Guide)

There are many ways to slow down your bench grinder, these include: • Router Speed Control • Fitting a belt Pulley • Using a Variable Frequency Drive I will discuss each of these methods of slowing down your bench grinder. Router Speed Control. If the motor on your bench grinder is under 1HP you should be able to control the speed with a ...

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Belt Grinders Belt Grinders Linishing Machines

The Direct Drive Maxigrinder ‘The professionals choice’ belt grinder. 2Hp direct drive, 240v single phase will run from conventional hhld supply, Invertek Optidrive speed control range from 0–2800 RPM with full power, at 1400-2800 power is reduced proportionally relative to the speed from 1400 down to 0 RPM. Takes 50 x 1800 to 50 x 2000 belts, angle-adjustable platen head, approx 15deg ...

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Help choosing motor for belt grinder - Practical

10/11/2017  A few years ago I built a KMG copy 2x72" belt grinder. It works fine except I would like to control the speed. I was looking at some VFDs and 3PH motors and wonder if it would be a good choice. Would 2 HP be enough power. 2 HP, 36 RPM, WEG Motor with 2 HP, 23 Volts, Teco VFD at Dealers Industrial Or maybe this one.

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My 2x48" Belt Grinder - its a beast! — The Practical Engineer

18/11/2019  The motor. I wanted a belt grinder that is STRONG, I don’t want to hassle with something underpowered when grinding metal. Doing my research I found that it’s recommended to have 1 HP for every inch of belt width. That meant for the two-inch belt I needed a 1.5kW motor since the price difference was only a little bit I decided not to fuzz around and I got the 2.2kW motor at 3000RPM.

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Can You Slow Down a Bench Grinder? (Helpful Guide)

There are many ways to slow down your bench grinder, these include: • Router Speed Control • Fitting a belt Pulley • Using a Variable Frequency Drive I will discuss each of these methods of slowing down your bench grinder. Router Speed Control. If the motor on your bench grinder is under 1HP you should be able to control the speed with a ...

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Best Motor for Belt Grinder: 1725 or 3450 RPM?

06/02/2009  I want to build a 2" by 72" belt grinder. I want a maximum speed of 5000 fpm. I want a VFD. It looks like I can achieve this with either a 1725 RPM motor, sped way up for 5000 fpm, or a 3450 RPM motor, which would run at around 5000 fpm at 60 Hz and would have to

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Belt Grinder - Motor Choice - The Home Shop Machinist ...

Belt Grinder - Motor Choice 02-11-2020, 12:38 PM. I've been thinking about a bigger belt grinder for a while. I get a lot of use out of the little 1x30. I think I use it almost as much as all other sanders and grinders combined. Ok, I sharpen machine tools with the bench grinder, and I have 5 (or 6 ?) angle grinders, so that previous statement might be exaggerated, but I use it a lot. Its ...

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Belt Grinders Belt Grinders Linishing Machines

The Direct Drive Maxigrinder ‘The professionals choice’ belt grinder. 2Hp direct drive, 240v single phase will run from conventional hhld supply, Invertek Optidrive speed control range from 0–2800 RPM with full power, at 1400-2800 power is reduced proportionally relative to the speed from 1400 down to 0 RPM. Takes 50 x 1800 to 50 x 2000 belts, angle-adjustable platen head, approx 15deg ...

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Motors Northridge Tool

For the most control and best operation on a 2x72 belt grinder, a direct drive motor and variable frequency drive (VFD) is the best way to go! This gives speed control with the turn of knob (potentiometer), protects your motor from overload, and comes in a NEMA4 Enclosure which is dust, grit proof and watertight so all that grinder dust can’t eat the expensive components! It also has as on ...

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Tech Support FAQ Beaumont Metal Works

The 4”, 3” 2” pulley is used because the centerline distance between the motor shaft and grinder drive shaft is the same for each belt position. This eliminates the need to re-adjust the motor position for each speed change. You simply roll the belt from on groove, to the next smaller size by hand, like a derailleur on a bicycle. Speed changes are done in a few seconds without tools. The ...

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Maximum/Minimum grinder speed? BladeForums

25/01/2016  For a person with only 1 grinder, there is a need to have a slow speed below 1000 SFPM, and I've found since using a VFD I use speeds down around 300 SFPM at times for fitting handles. It takes a real expert to finish a bevel at 5,000 SFPM. On top of that, a 400 grit belt just doesn't work as well at that speed. Ken H>

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Choosing the right electric motor - Buying Guides ...

In this type of motor, the stator is connected in series with the rotor and the speed is controlled by varying the supply voltage. However, this type of speed control is rather poor: the speed drops as soon as the torque to the engine increases. This type of engine is useful for applications requiring high starting torque such as cars or cranes.

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Help choosing motor for belt grinder - Practical

10/11/2017  A few years ago I built a KMG copy 2x72" belt grinder. It works fine except I would like to control the speed. I was looking at some VFDs and 3PH motors and wonder if it would be a good choice. Would 2 HP be enough power. 2 HP, 36 RPM, WEG Motor with 2 HP, 23 Volts, Teco VFD at Dealers Industrial Or maybe this one.

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Belt Grinder - Motor Choice - The Home Shop Machinist ...

Belt Grinder - Motor Choice 02-11-2020, 12:38 PM. I've been thinking about a bigger belt grinder for a while. I get a lot of use out of the little 1x30. I think I use it almost as much as all other sanders and grinders combined. Ok, I sharpen machine tools with the bench grinder, and I have 5 (or 6 ?) angle grinders, so that previous statement might be exaggerated, but I use it a lot. Its ...

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Best Belt Grinders for Knife Making of 2021 * Buying

23/05/2019  You should choose a belt grinder that runs at the right speed with the right power. A cheap model can cause that your belt grinder cannot perform some tasks. If a grinder is slow, working on projects will take longer, there would be more load on the motor and belt will wear them down faster. All these result in costing you more money even though your initial investment was not high. On the ...

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Maximum/Minimum grinder speed? BladeForums

25/01/2016  For a person with only 1 grinder, there is a need to have a slow speed below 1000 SFPM, and I've found since using a VFD I use speeds down around 300 SFPM at times for fitting handles. It takes a real expert to finish a bevel at 5,000 SFPM. On top of that, a 400 grit belt just doesn't work as well at that speed. Ken H>

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Choosing the right electric motor - Buying Guides ...

In this type of motor, the stator is connected in series with the rotor and the speed is controlled by varying the supply voltage. However, this type of speed control is rather poor: the speed drops as soon as the torque to the engine increases. This type of engine is useful for applications requiring high starting torque such as cars or cranes.

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DESIGN - vormac.co

A machine is considered to be directly driven if the wheel that drives the belt is attached to the motor shaft. VORMAC machines are all direct driven. The indirect drive machine typically makes use of a system of pulleys and v-belts, with the drive wheel mounted on a shaft. This configuration has some advantages for the DIY builder (such as a wide choice of motors and flexibility), but the ...

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Home Built 2x72 Belt Grinder Finished - Finish and

10/02/2016  The biggest limitation I placed on my motor choice was my current choice for shop power - it has to run on a 120v 15- 20 amp outlet for versatility in my shop - and if I ever want to take it on the road to a friends place. The 1.5 hp motor wired for 115v does this nicely. I guess if you have the ability to power a 2 hp motor with your shops circuitry go with a 2 hp - the price difference ...

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Variable Speed KMG-PL Beaumont Metal Works

KMG-PL Grinder with platen attachment. Work rest. 2 hp variable speed motor and VFD, or optional 3 hp motor and VFD. Pulley for motor. Pulley for grinder. Drive belt. Base plate. Mounting bracket for VFD and electrical hardware. Uses 2″ X 72″ Belts. *The 2 hp motor and VFD will run on standard 110 or 220VAC. A 2 hp motor is supplied, but ...

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Options for replacement lathe spindle motor

11/03/2020  Basic numbers, original motor somewhere around 1/2 HP, 1450 rpm. The existing belt gearing taking this to around 200-700rpm, depending on belt position on the cone assy. Ideally I'd like to up the rpm a tadge to around 1000rpm max (it's a build option with a different spindle motor pulley choice).

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grinder motor hp

Belt grinder: motor choice and speed control All About . Nov 29, 2009 I also know from experience that I want a motor rated around 1.5 to 2 hp (roughly 1 to 1.5 kW) and my preference would be the 2 hp motor. This desire partly comes from numerous posts on the web concerning knife grinders, for which this design is . Belt Grinder Motor VFD 2HP – Origin Blade Maker. This listing is for a ...

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