September 21, 2020 - If you choose that motor, I would recommend going with a 7 inch (Approx. 178mm) drive wheel to hit a little over 5200 SFPM. It’s a little large but it is certainly within reason. ... Choose one with 3hp, I have one with 2hp and I stop it when doing heavy grinding. You also need to take notice of the rpm, depending on the diameter of the driving wheel. My grinder has a 125mm wheel and the motor is 3450rpm.

December 10, 2017 - A standard 1.5 kW (2 HP), 4-pole motor or a 2.2 kW (3 HP) 2-pole motor will have a 90-frame. The rule-of-thumb for belt grinder motor power in industry is 1 HP per inch of belt width (750W per 25mm).

November 29, 2009 - My preference would be a DC motor rated to around 200-250 VDC. I could then build a PWM circuit to control the speed and run it from the numerous 240 VAC outlets I put in my shop. From what I've read and my own experience as a machinist, I will design this grinder to have belt speeds of between 15 and 30 m/s.

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For these reasons we chose to only offer USA made motors. The most common drive setup for a belt grinder is a pair of bearing blocks which supports the drive shaft with the drive wheel on one end and a single or step pulley on the other, like our Mod-3 grinder.

Sale price$770.57 USD Regular price$824.33 USD 2x72 BELT GRINDER 2HP BUNDLE - Maxmotion 2HP 3 Phase Motor and KBAC 27D

IMHO, a 1" belt grinder needs a minimum of 1HP. VFD control preferred. Max speed 120 Hz on a 4-pole sheaved to get at least 4000 FPM on the belt. 5000 FPM preferred. A 4" belt needs at least 2 HP with same speeds. 3 HP motor is better.

This listing is for a 1.5hp motor wired to a VFD (Variable Frequency Drive). The 1.5hp motor is a 56C frame. The VFD is TEFC (Totally Enclosed Fan Cooled). This is perfect for knife grinding. Motor shaft is 5/8" diameter. The motor and VFD are wired for 110V.

The drive wheel would also stand 1-inch taller, relative to the plate the motor's mounted to, so the 72-inch belt [essentially] gets tightened by employing the 184T frame motor. As I recall, most of the 2 x 72 belt grinders that I've seen employ a spring-loaded tracking mechanism to keep tension on the sanding belt during operation.

August 12, 2024 - Precise Speed Control: With a VFD, you can adjust the belt speed to match the specific requirements of each task, improving both accuracy and efficiency. Soft Start Feature: VFDs provide a smooth start-up, reducing the initial torque and minimizing wear on both the motor and the grinder.

June 18, 2022 - Having enough HP to pull a 24 grit belt at 7000 SFM across a 14" contact wheel is a real joy. Im running a 3HP, 3600 rpm motor with a vector drive and there are times that I wish for more. ... The grinder I am building is from the design Jer Schmidt came up with and posted on youtube.

This package includes a 6' 120V Single Phase Power cord (with plug). Motor is a 2HP 3600RPM, 3-Phase Electric Motor, but the motor is derated to 1.5HP because of the 120V power input to the drive.

January 20, 2018 - I run my belt grinder on 6000 SFPM .Most knife maker as I read here run on 4000 SFPM . Now I almost finished my new grinder which will run on max. 9000 SFPM .You can use this to calculate speed with motors you have with different size drive wheel .............

February 6, 2022 - This would be a very good motor to use BALDOR IDNM3584T 1.5HP MOTOR: https://www.ebay.com/itm/175086857097 Alternate: Baldor EM3558T 3 Phase AC Electric Motor 2HP 1755RPM 60HZ 208-230/460V https://www.ebay.com/itm/284397944262 Many people opt. for the KBAC sealed drive for the belt grinders, they work well for the most part although there have been a few cases where the motor/VFD combination was not a good match.

Here are some key features of the belt grinder: Motor: VEVOR belt grinders typically have a powerful motor that drives the abrasive belt.