24V DC Stepless Speed Bench Top Knife Sharpener & Grinder, 0–2000 RPM, Dry & Water-Cooled Options

Sharpen Any Blade, Grind Any Material — With Precision Speed Control

The 24V DC Stepless Speed Bench-Top Knife Sharpener & Grinder is a versatile grinding and sharpening machine for knives, blades, scissors, chisels, woodworking tools, jade, glass, agate, and other hard materials.

Powered by a 24V DC permanent-magnet copper motor, it delivers stepless speed adjustment from 0 to 2,000 RPM and a forward/reverse rotation function — giving you precise control over speed and grinding direction for every material and application.

Choose between a Dry-Grinding or Water-Cooled configuration, and select from multiple abrasive options including an 80-grit white corundum wheel and 320#, 800#, and 3000# diamond discs.

Key Features

• 0–2,000 RPM Stepless Speed Control — Dial in the exact grinding speed for your material and stage
• Forward & Reverse Rotation — Change grinding direction for better control and even abrasive wear
• 24V DC Low-Voltage Operation — Powered via included 110–240V AC to 24V DC adapter (universal voltage)
• Permanent-Magnet Copper Motor — Stable, durable, and low-noise operation
• Dry or Water-Cooled Options — Select the cooling method that suits your application
• Voltage Display — Monitor operating voltage at a glance
• Multiple Abrasive Options — White corundum wheel and diamond discs in 320#, 800#, 3000# grits
• Compact Bench-Top Design — 20 × 22 × 16 cm footprint for workshops, garages, studios, and home use

Technical Specifications

Note: Exact configuration, abrasive quantity, and package weight depend on the selected variant.

Available Configurations

Water-Cooled Version

Water-cooled models include a water flow switch, flexible coolant pipe, and magnetic water tray. The water-cooling system helps control grinding temperature and reduce airborne dust — particularly beneficial for extended grinding sessions.

Abrasive Specifications

80-Grit White Corundum Grinding Wheel

Diameter: 150 mm / 6 in · Thickness: 10 mm · Bore: 32 mm · Grit: 80
Suitable for: Coarse grinding, stock removal, shaping, and sharpening metal tools

Diamond Discs

Diameter: 150 mm / 6 in · Thickness: 1 mm · Bore: 12.7 mm

• 320# Grit — Initial sharpening and edge shaping
• 800# Grit — Intermediate grinding and scratch refinement
• 3000# Grit — Fine sharpening, polishing, and edge finishing

Dry Grinding vs. Water Cooling

Applications

Knife sharpening · Blade edge refinement · Scissor sharpening · Chisel sharpening · Woodworking tool sharpening · Metal tool grinding · Jade grinding & polishing · Glass grinding · Agate & gemstone processing · General workshop grinding & finishing

Package Includes

• 1 × 24V DC bench-top grinding machine
• 1 × 110–240V AC to 24V DC power adapter
• 1 × Spanner wrench
• Selected grinding wheel(s) or diamond disc(s) per chosen variant
• Water supply accessories & magnetic water tray (water-cooled variants only)

Safety Instructions

• Always wear appropriate eye protection when operating the machine
• Secure the workpiece properly before grinding
• Select an appropriate speed for the material and abrasive being used
• Do not touch the rotating grinding disc during operation
• Disconnect the power adapter before changing wheels or discs
• Keep electrical components away from water; direct coolant only toward the grinding area