2UUL DA84 CVT Grinder Pro
2UUL DA84 CVT Grinder Pro is a high-precision, rechargeable micro-grinding and polishing pen specifically engineered for mobile phone motherboard repair, IC chip drilling, and detailed PCB work. It is widely used by micro-soldering technicians to grind down IC chips, clear underfill glue, repair broken PCB traces, and perform frame corrections.
Key Technical Specifications
· Rotational Speed: High-speed precision performance maxing out at 18,000 RPM.
· Speed Control: Continuously Variable Transmission (CVT) dial allowing seamless stepless speed adjustment from 0 to peak RPM.
· Battery Capacity: Large 3400mAh internal rechargeable lithium battery for cordless, extended workspace maneuverability.
· Direction Control: Built-in dynamic click mechanism to seamlessly reverse rotation direction on the fly.
· Dimensions & Weight: 168mm x 22mm x 25mm layout weighing 276 grams.
· Input Power: 5V charging via a standard integrated Type-C port.
Core Applications in Phone Repair
· IC Chip Surface Grinding: Smoothly drills and grinds down encapsulated ICs (such as CPU, Baseband, or NAND) for chip swapping or layer separation.
· Glue & Underfill Removal: Safely strips tough black resin, epoxy underfill, and display OCA adhesive from delicate circuit structures.
· Trace & Jump Wire Preparation: Exposes buried PCB copper traces cleanly to let technicians install microscopic jumper wires safely.
· Housing & Frame Straightening: Restores deformed phone mid-frames or screen seating edges to facilitate flawless screen re-assemblies.
Package Contents
The kit ships in a protective hard carrying case and typically contains:
· 1 x 2UUL DA84 CVT Grinder Pen
· 5 x Interchangeable Grinding/Drilling Heads
· 1 x Sliding screw lock system for rapid, low-vibration bit changes