Kalamazoo Industries
Kalamazoo Industries

3 X 90 Inch Industir Precision Grinder – KS390

  • KS390 3 X 90 INCH BELT GRINDER, production, output, power, strength, where to buy, KS390 3 x 90 Inch Grinder With Vacuum - FAQ Guide, 3 X 90 Inch Industrial Grinder - KS390, Precision Grinding, Accurate grinding, chamfering edges,precision grinder, custom stainless steel fabrication, advanced manufacturing, equipment manufacturing, jobs in metal fabrication
  • grinder, belt grinder, industrial, KS390/KS490 3 & 4 inch heavy duty industrial belt grinders, grinding, grinding, Kalamazoo KS390 3 X 90 Inch High Speed Grinder, KS390 3 X 90 INCH ABRASIVE BELT GRINDER, aggressive, strong, high speed, speed, high quality, quality, high performance grinder, aggressive grinding, machine shop equipment, fabrication tools, metalworking machinery, 3 X 90 Inch Industrial Grinder - KS390, Grinding and Polishing Machine, 3 X 90 Inch Industrial Grinder with Vacuum - KS390HV, 4 x 90 Inch Abrasive Grinder - KS490
  • KS390-ks490 adjustable work table with belt tracking, grinder, belt grinder, industrial, KS390/KS490 3 & 4 inch heavy duty industrial belt grinders, grinding, Industrial Grinder, Kalamazoo KS390 3 X 90 Inch High Speed Grinder, KS390 3 X 90 INCH ABRASIVE BELT GRINDER, aggressive, strong, high speed, speed, high quality, quality, high performance grinder, aggressive grinding, machine shop equipment, fabrication tools, metalworking machinery, 4 x 90 Inch Abrasive Grinder - KS490
  • KS390 3 X 90 INCH BELT GRINDER, production, output, power, strength, where to buy, KS390 3 x 90 Inch Grinder With Vacuum - FAQ Guide, 3 X 90 Inch Industrial Grinder - KS390, Precision Grinding, Accurate grinding, chamfering edges,precision grinder, custom stainless steel fabrication, advanced manufacturing, equipment manufacturing, jobs in metal fabrication
  • grinder, belt grinder, industrial, KS390/KS490 3 & 4 inch heavy duty industrial belt grinders, grinding, grinding, Kalamazoo KS390 3 X 90 Inch High Speed Grinder, KS390 3 X 90 INCH ABRASIVE BELT GRINDER, aggressive, strong, high speed, speed, high quality, quality, high performance grinder, aggressive grinding, machine shop equipment, fabrication tools, metalworking machinery, 3 X 90 Inch Industrial Grinder - KS390, Grinding and Polishing Machine, 3 X 90 Inch Industrial Grinder with Vacuum - KS390HV, 4 x 90 Inch Abrasive Grinder - KS490
  • KS390-ks490 adjustable work table with belt tracking, grinder, belt grinder, industrial, KS390/KS490 3 & 4 inch heavy duty industrial belt grinders, grinding, Industrial Grinder, Kalamazoo KS390 3 X 90 Inch High Speed Grinder, KS390 3 X 90 INCH ABRASIVE BELT GRINDER, aggressive, strong, high speed, speed, high quality, quality, high performance grinder, aggressive grinding, machine shop equipment, fabrication tools, metalworking machinery, 4 x 90 Inch Abrasive Grinder - KS490

3 X 90 Inch Industir Precision Grinder – KS390

$2,850.00

KS390 3 X 90 Inch Precision Grinder

The KS390 precision grinder is a powerful tool built for custom stainless steel fabrication, advanced manufacturing, and equipment manufacturing, helping create better jobs in metal fabrication—try it today to boost your shop’s performance.

Request Quote
SKU: KS390 Categories: , , Tags: , , , , , , , ,

Description

KS390 Industrial Precision Grinder

The KS390 is the precision grinder trusted by shop owners who need consistent power, smooth operation, and dependable performance shift after shift. Built for real production environments, this 3″ x 90″ workhorse helps you tackle everything from custom stainless steel fabrication to high-volume equipment manufacturing with clean, accurate results. Its rugged construction, stable platen, and high-speed grinding power make it a smart investment for any shop looking to grow, modernize, and stay competitive in today’s world of advanced manufacturing. If you want to boost output, improve part quality, and support more jobs in metal fabrication, the KS390 gives your team the edge they need.

What makes the KS390 a smart upgrade for your shop:

  • High-speed grinding performance that cuts production time and improves consistency

  • Stable frame and precision-machined parts designed for long-term industrial use

  • Ideal for custom stainless steel fabrication, deburring, and heavy metal removal

  • Supports fast turnaround and tighter tolerances demanded in advanced manufacturing

  • Reduces bottlenecks in equipment manufacturing with dependable daily operation

  • Easy for new team members to learn, helping you fill growing jobs in metal fabrication

  • Low-maintenance design that keeps your shop running without costly downtime

Bring more power, speed, and reliability to your workflow—add the KS390 to your shop today and take your production to the next level.

The KS390 is a heavy-duty precision grinder engineered for shop owners who need reliable speed, consistent accuracy, and long-lasting performance. Designed for real production floors, this 3″ x 90″ grinder helps you take on demanding custom stainless steel fabrication, fast-paced equipment manufacturing, and the high standards of today’s advanced manufacturing industry. With its rugged build, stable grinding platform, and easy operation, the KS390 gives your team the power to improve part quality, reduce rework, and support expanding jobs in metal fabrication.

Why the KS390 is the right upgrade for your shop:

  • Built for industrial grinding with a strong frame and precision-machined components

  • Delivers smooth, accurate results for tight-tolerance metal finishing

  • Ideal for custom stainless steel fabrication, deburring, beveling, and shaping

  • Meets the speed and consistency demands of modern advanced manufacturing

  • Dependable daily performance that supports growing equipment manufacturing workloads

  • Easy to operate and train, helping you onboard new hires and expand jobs in metal fabrication

  • Low-maintenance design keeps your shop running and reduces downtime

  • Made in USA

Give your team the equipment they need to stay competitive—upgrade to the KS390 today and elevate your shop’s production power.

KS390 Precision Grinder Specifications

Feature Details
Motor Specifications
  • Power Options: Choose between a 2 HP, 1-phase 230V motor or a 3 HP, 3-phase 230V or 460V motor (specify during ordering).
  • Amperage:
    1-phase: 230V at 11.5 amps.
    3-phase: 208V at 7.9 amps, 230V at 7.2 amps, 460V at 3.6 amps.
Steel Platen Specifications
  • Length: 24-1/2 inches.
  • Material: Reversible and replaceable steel platen.
Drive System
  • Direct Drive: Ensures consistent power delivery.
Replaceable Contact Wheel
  • Diameter: 8 inches.
  • Surface: Serrated, 70 duro.
  • Bearings: Sealed ball bearings.
Switch Type
  • On/off magnetic switch for safety and convenience.
Belt Size
  • Compatible with 3″ x 90″ belts of all types.
Tension System
  • Pre-set spring belt tension.
  • Quick-release belt tension lever.
Belt Tracking and Safety Features
  • Easy belt tracking adjustment.
  • Material work stop.
  • Removable steel platen guard.
Adjustability
  • Adjustable steel work table.
  • Multi-position horizontal through vertical belt grinder head.
Construction
  • Hinged door on grinder head for quick belt changes.
  • Sturdy steel base.
Belt Speed
  • 7200 SFPM (Surface Feet Per Minute).
Equipment Options
  • Aluminum oxide abrasive belts available in 50, 80, and 100 grits.
  • VFD: Variable Frequency Drive.
Shipping Dimensions and Weight
  • Dimensions: L 48″ x W 57″ x H 52″.
  • Weight: Approximately 500 lbs.
  • Weight and dimensions are subject to change.
Country of Origin
  • Made in USA

Power Up Your Shop with the KS390 Belt Grinder

Move metal faster, hold tighter tolerances, and get repeatable, pro-level results on every grind.

Call (269) 382-2050 or Request a Quote today.

Made in the USA | Built for Fabrication | Proven in Metalworking Shops

The precision grinder you choose can make or break your workflow, and the KS390 is built to help shop owners boost speed, quality, and profit. This 3″ x 90″ belt grinder delivers the power and control you need for custom stainless steel fabrication, advanced manufacturing, and everyday equipment manufacturing. If you want to stay competitive and create more jobs in metal fabrication, the KS390 is the tool that helps you get there.

Why shop owners choose the KS390:

  • Delivers smooth, accurate grinding for tight-tolerance work

  • Built tough for long life in busy production shops

  • Perfect for custom stainless steel fabrication and heavy metal jobs

  • Helps streamline advanced manufacturing workflows

  • Supports growing shops and boosts jobs in metal fabrication

  • Simple to maintain, easy to train new team members

Upgrade your shop’s performance—get your KS390 today and stay ahead of the competition.

Manual (pdf, 1862KB)
Download
  • Availability: Standard Parts in stock ship within 1 to 2 business days.
  • Purchase: Click here to buy your replacement parts
How to Choose the Right Belt for the KS390 (pdf, 398KB)
Download
KS390 Sales Flyer (pdf, 211KB)
Download
Understanding Operation, Uses & Benefits for Metalworking (pdf, 2359KB)
Download
Q: What are the key features of the Kalamazoo KS390 Grinder?
Belt Size: 3 x 90 inches, Motor: Powerful motor for efficient grinding, Construction: Durable and robust build for long-lasting performance, Adjustability: Adjustable platen and contact wheels for versatile grinding applications
Can the KS390 grinder be used for heavy-duty applications?
Yes, the KS390 is specifically built for heavy-duty applications, featuring a robust frame, industrial-grade motor, and durable components to handle continuous operation.
Q: How do I adjust the belt tension on the KS390?
The KS390 features a pre-set spring belt tension system with a quick-release belt tension lever for easy adjustments.
What materials can the KS390 grinder handle?
The KS390 is designed for heavy-duty metalworking, including beveling, deburring, squaring up ends, rounding corners, flatwork, contouring, heavy metal removal, aggressive grinding, and sharpening.
Q: Is the platen on the KS390 replaceable?
Yes, the KS390 has a reversible and replaceable steel platen.
Q: What safety features does the KS390 include?
The grinder includes an on/off magnetic switch, easy belt tracking adjustment, a material work stop, and a removable steel platen guard.
Q: How do I maintain the KS390 grinder?
Regular maintenance includes cleaning after each use, checking and replacing belts as needed, and ensuring the vacuum base and filter are free of blockages.
Q: Where can I purchase replacement parts for the KS390?
Replacement parts can be purchased directly from Kalamazoo Industries' website or by contacting their customer service
Q: What is the warranty on the KS390 grinder?
The KS390 comes with a one-year limited warranty covering defects in materials and workmanship.
Maintenance Checklist (pdf, 39KB)
Download

Warranty Policy

  • Parts warranty is guaranteed for one year from the original date of purchase by the original purchaser, covering defects in material or workmanship under normal use. This warranty covers the replacement of defective parts. Some exclusions may apply.
  • Return Authorization: Obtain written authorization before returning any merchandise by contacting Customer Service at (269) 382-2050.

If you need further assistance, feel free to contact us!

Phone: (269) 382-2050
Contact Form: Click here to reach out via our contact form.

We’re here to answer your Kalamazoo questions.

 

Related products

Warranty Information
Privacy Policy
Return Policy

Office Hours: Monday – Friday: 8am – 4:30pm EST

 

© 2025 Kalamazoo Industries, Inc | All Rights Reserved | Website Powered by Geek Genius

Select the fields to be shown. Others will be hidden. Drag and drop to rearrange the order.
  • Image
  • SKU
  • Price
  • Description
Click outside to hide the compare bar
Compare
Go to Top