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 ControlThe 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 Specification Details Machine Type Bench-Top Knife Sharpener & Grinder Operating Voltage 24V DC Power Input 110–240V AC via adapter Speed Range 0–2,000 RPM Speed Control Stepless Rotation Forward / Reverse Machine Size 20 × 22 × 16 cm Grinding Disc Diameter 150 mm / 6 in Diamond Disc Bore 12.7 mm White Corundum Wheel Bore 32 mm Cooling Options Dry Grinding / Water Cooled Motor Type Permanent-Magnet Copper Motor Note: Exact configuration, abrasive quantity, and package weight depend on the selected variant.Available Configurations Variant Cooling Included Abrasives Approx. Weight Dry + 80# Wheel Dry Grinding 1 × 80-Grit White Corundum Wheel 3.3 kg Dry + 3 Diamond Discs Dry Grinding 320#, 800#, 3000# Diamond Discs 3.4 kg Dry + Wheel + 3 Discs Dry Grinding 80-Grit Wheel + 3 Diamond Discs 3.8 kg Water-Cooled + 80# Wheel Water Cooled 1 × 80-Grit White Corundum Wheel 3.8 kg Water-Cooled + 3 Diamond Discs Water Cooled 320#, 800#, 3000# Diamond Discs 3.9 kg Water-Cooled + Wheel + 3 Discs Water Cooled 80-Grit Wheel + 3 Diamond Discs 4.3 kg Water-Cooled VersionWater-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 Specifications80-Grit White Corundum Grinding WheelDiameter: 150 mm / 6 in · Thickness: 10 mm · Bore: 32 mm · Grit: 80 Suitable for: Coarse grinding, stock removal, shaping, and sharpening metal toolsDiamond DiscsDiameter: 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 Feature Dry Grinding Water Cooled General Sharpening ✓ ✓ Coarse Grinding ✓ ✓ Heat Control Good Excellent Dust Reduction Limited Better Extended Grinding Suitable Recommended Water System No Yes ApplicationsKnife 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 & finishingPackage 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