PT-5721 Mini Grinder Set User’s Manual, includes the technical characteristics of the electric grinder and general safety instructions
The PT-5721 is a battery‑powered mini grinder set with LED lighting and a range of accessories such as drill bits, grinding stones and sanding bands. The manual begins with technical specifications and important safety warnings to protect users and prevent damage.
It then explains how to install and replace accessories, operate the tool, and perform routine maintenance. Battery handling, charger safety, and proper storage procedures are also covered to ensure reliable performance and longevity.
| Voltage | 7.2 VDC |
|---|---|
| Maximum Bit Diameter | 1/8 inch |
| No‑Load Speed | 5000–18000 rpm |
| Battery Pack | 7.2 V 1000 mAh Lithium |
| Charging Time | 3–5 hours |
| Adapter Input | 230 V ~ 50 Hz or 120 V ~ 60 Hz |
| Adapter Output | DC 9 V 300 mA |
The battery charges in 3 to 5 hours.
Wear safety glasses, a dust mask, and ear protection when noise exceeds 70 dB(A).
No, the battery and charger must not be exposed to moisture.
Unplug the tool and switch it off before replacing the collet.