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Product Overview
- This compact multi-functional micro grinding machine integrates an all-in-one CNC machined grinding disc and spindle, delivering ultra-precise low-vibration rotation for jewelry carving, gold engraving, watch tool sharpening and micro polishing tasks. Equipped with a powerful 70W constant-torque motor, it supports stepless speed adjustment from 400–4000 RPM with forward/reverse rotation. Ultra-quiet operation, multi-scene placement design (vertical, horizontal, handheld), and compatible with diamond grinding discs, sandpaper and polishing pads to cover all miniature metal finishing work for watchmakers, jewelers and DIY craftsmen.
✨ Core Premium Advantages
1. Integrated CNC Machined Disc & Spindle, Ultra-High Precision
- One-piece lathe construction of turntable and spindle reduces assembly tolerance, total runout controlled within 0.01mm. No wobble during high-speed grinding, guarantees symmetrical, uniform sharpening and polishing results for tiny precision tools and jewelry parts. Aluminum turntable diameter reaches 58mm, compatible with 55mm / 60mm 4-hole diamond grinding wheels.
2. 70W Constant High Torque Motor, Consistent Power At All Speeds
- Professional 70W heavy-duty core motor maintains strong torque output whether at low or maximum RPM. Even at minimum speed, the rotation holds firm against manual pressing force, ideal for slow fine grinding and high-speed mirror polishing without power drop. Long service life, stable continuous operation for daily workshop use.
3. 400–4000 RPM Stepless Variable Speed + Forward & Reverse Switch
- Rotary knob infinite speed control covers full range of micro machining demands: low RPM for rough shaping, mid speed for sharpening watch screwdrivers, max speed for high-gloss jewelry polishing. Independent forward/reverse toggle switch adapts to different cutting grain directions to avoid scratching delicate metal surfaces.
4. Ultra-Quiet Smooth Operation
- Optimized internal shock absorption and bearing structure greatly suppress operating noise. Even running at full 4000 RPM top speed, the machine keeps low volume, suitable for indoor home hobby stations and small repair workshops without noise disturbance.
5. Multi-Angle Portable Placement Design
- Compact mini aluminum alloy body supports three usage modes: stand upright on the bench, lay flat horizontally, or grip handheld for flexible off-table grinding. Small footprint saves precious workbench space, easy to carry for mobile watch repair or jewelry crafting jobs.
6. Wide Compatibility for Multi-Purpose Finishing
- The flat aluminum turntable can install electroplated diamond grinding discs, self-adhesive sandpaper, buffing compounds and polishing pads to fulfill all workflows:
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✅ Sharpen watch screwdrivers, tiny carving chisels & micro hand tools
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✅ Gold, silver & metal jewelry carving, trimming and engraving
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✅ Precision grinding broken watch components & metal fittings
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✅ Mirror polishing of small metal parts
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✅ Deburring and fine finishing of miniature hardware
🎯 Why This Mini Grinder Is A Must-Have For Craftsmen & Watchmakers
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Zero-Wobble Precision Spindle: Runout under 0.01mm eliminates uneven grinding that ruins high-precision micro tools.
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Constant Torque Full Speed Range: No power loss at low RPM for controlled fine sharpening.
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All-In-One Polishing & Grinding Solution: One machine replaces separate sharpeners and polishers, cuts equipment costs.
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Quiet Compact Portable Build: Fits any small bench, works at home, repair shop or craft studio.
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Forward & Reverse Function: Prevents grain scratch marks on polished gold, silver and watch metal surfaces.
Detailed Specifications
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Rated Power: 70W (Constant-torque DC motor)
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Speed Range: 400 – 4000 RPM (Stepless speed control)
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Rotation Mode: Forward/Reverse toggle switch
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Turntable Material: CNC-machined solid aluminum alloy
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Turntable Diameter: 58mm
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Compatible Disc Sizes: 55mm / 60mm (4-hole mounting)
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Spindle Runout Tolerance: ≤ 0.01mm (1 micron)
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Operation Modes: Vertical stand / Horizontal placement / Handheld
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Standard Discs: 3 x Electroplated diamond discs (55mm, 4-hole): 320 grit / 800 grit / 2000 grit
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Additional Discs: Replacement diamond discs available for separate purchase
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Housing: Aluminum alloy casing with heat dissipation slots
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Package Contents: 1 × Main unit, 1 × Power adapter, 3 × Diamond discs
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Target Users: Watch repair technicians, jewelry engravers, goldsmiths, miniature tool makers, metal crafting DIY enthusiasts
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Primary Applications: Sharpening miniature watchmaking tools, jewelry engraving, metal deburring, precision polishing, grinding of miniature parts
AFTER SALE SERVICE
- We offer a 100% satisfaction guarantee, a 30-day money-back guarantee.
- We have 24/7/365 Facebook Messenger and email support.
- We strive to make our customers 100% satisfied with the product you have purchased. Please don't hesitate to email us with any questions or problems and we will help you right away.
- Tip: Buying 2 products or more at the same time will save you quite a lot on shipping fees.
THIS PRODUCT IS A LIMITED PRODUCTION AND IS NOT AVAILABLE IN STORES. WILL SELL OUT FAST!
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