02-05-2009, 12:43 AM #3 The pully size on the motor drive of a belt sander determines the belt speed. Pulleys from a 4″ portable belt sander The reason that commercial belt machines use larger wheels is that bigger bearings can be fitted. “Most belt grinders, shop built & commercial, are not overpowered. Rule of thumb is to have a minimum of 1 hp per inch of belt width, with the motor running at full rpm. My 2” belt Burr King runs a 3 hp vector drive, and I can’t load it down at any speed, even 10 Hz with a 36 grit belt.
The motors we supply are 2 horse power 1725/1800 rpm three phase 56c face mount 4 pole electric motors, and use a variable frequency drives to convert from the 110v or 220v single phase power of a normal house or shop wiring to the 3 phase power the motor requires. Standard household current is 60 Hz, so by increasing the frequency to 120 Hz, you can double the speed of the motor, and decreasing the frequency will decrease the speed of the motor. All of the extra components add a significant amount of extra friction, reducing torque by an incredible 30-40%! That means the big awesome 2HP motor you bought will only effectively be a 1.2 HP motor when compared to a 2HP direct drive motor.
The two wheels on the flat platen are solid aluminum. Solid cnc-turned aluminum wheels as opposed to cheap hand turned wheels. Rugged steel jig-welded chassis, no bolts holding it together & NOT made with short pieces of flimsy square tubing or off-the shelf grooved extruded aluminum like some so-called knife grinders.
best motor for belt grinder Related Question:
What is a good RPM for belt grinder?
The optimal speed for belt grinders is largely dependent on a number of factors, including type of abrasive grain, grit grade, workpiece material, and more. Generally speaking, a safe speed in most cases is 3,000 surface feet per minute. You can calculate surface feet per minute using the formula SFPM = RPM X .
How much horsepower does a belt grinder have?
Sooo.a 1hp may be a very good choice for a 2 or 3 wheel set up that is contact wheel grinding only. A 1.5hp is probably better for a 3 or 4 wheel setup for all around. A 2hp is probably good for high volume flat grinding.
How do I choose a belt grinder?
Motor Size To effectively grind steel, you need high belt speed with the ability to exert high pressure on the belt. You won’t be able to accomplish grinding very well if you don’t have a large enough motor. As a general rule of thumb, you need 1 horsepower of motor power for every inch of belt width at 72” in length.
What RPM should a belt sander run at?
For a belt to run at the proper speed for grinding you need to have a motor and spindle speed that will exceed 3,500 rpm.
How do I determine my belt speed?
Calculate the belt velocity by multiplying the circumference of the pulley by the speed of the pulley. For example, the drive pulley has a circumference of (Pi)(D2). This equals 2(Pi). The speed of the pulley is 1,800 rpm.
How do you find the linear speed of a belt?
A conveyor speed, or in this case the linear belt speed, can be calculated using the formula pi/2*D*RPM/60. In this formula, D is diameter and RPM is the rotations per minute of the conveyor. The value is then divided by 60 to convert the speed into distance per second.
What belt grinders do they use on forged in fire?
The mechanical engineering degree paid off when he designed the TW-90 vertical/horizontal grinder, known to many as the “Cadillac of belt grinders.” It’s Travis’ brainchild, and it was an industry game-changer when it comes to finishing knives.
What are knife grinders?
The duties of a knife grinder are to sharpen, straighten, and smooth knives, blades, and other parts for cutting equipment, such as deli slicers or scissors. Some knife grinders work at production or manufacturing facilities and have many of the same responsibilities as buffers and polishers.
What belt sander do they use on forged in fire?
Jason has been using Red Label’s EdgeCore Ceramic belts for some time now. He grinds with the 2 x 72 belts, alternating between 36 and 60 grit to shape his blades. When asked why he prefers the EdgeCore Ceramic belts to other alternatives, he had a few things to say.
What’s better orbital or belt sander?
A belt sander is more effective for large materials, while the orbital sander is ideal for small spaces and pieces of furniture. A belt sander works effectively on flat surfaces, while an orbital sander can work with various angles.
What size belt sander is best?
A common size for home shop use is a 3″ x 21″ sander. This size offers a sizeable sanding area, without the fatigue generated by running a large machine. I think you’ll find it can handle most tasks in the shop.
Is a belt sander faster?
Belt Sanders are high-speed, which can save time. They’re also powerful, able to remove any material and the best sander for aggressive removal down to the wood. When working with the grain, they are the perfect sander for large surfaces.
What is the minimum speed of belt conveyor?
Many belt conveyors are low-speed types with belts running in the range of 2–4 m/s that transport materials a short distance, up to 1 km. In contrast, some critical services now rely on conveyors with belt speeds exceeding 5 m/s. Modern technologies enable achieving speeds as high as 10 m/s, 12 m/s or even more.
How do you calculate RPM for conveyor belt?
Measure the revolutions per minute of the rollers. Count how many full rotations are made by the roller in one minute. Multiply the RPM by the circumference of the roller. This calculation provides the linear distance traversed by a point on the conveyor belt in one minute.
How do you calculate motor RPM and pulley size?
There are complicated formulas for determining pulley ratios but in generic, layman terms, simply divide the driven component (pump) by RPM, the driver component (motor or engine) rated by RPM to get the required ratio. In the example below, the pump RPM is 1070, for full output, while the motor is 1750 RPM.