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Item No:MP1910767

 

 

 

"Voltage: 21V

Motor: Brushless 4815

No-load speed: 13000/20000/24000r/min

Power display, positive and negative rotation, safety lock "

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1. Core parameters and functional positioning

Parameters/Functions                                                                                 Technical significance and application value

21V voltage                                                                                               It is a medium and high voltage platform that provides strong power, is suitable for                                                                                                                           medium-intensity operations such as drilling, polishing, and cutting, and has battery                                                                                                              life and power balance (more efficient than the 12V model and lighter than the 36V model).

 

Brushless 4815 motor                                                                               4815 refers to a motor with a diameter of 48mm and a length of 15 mm. Compared                                                                                                                         with a brushed motor, a brushless motor has higher efficiency (energy conversion                                                                                                                              rate is increased by about 30%), longer life (no carbon brush wear), and low                                                                                                                                         maintenance costs. It is suitable for long-term heavy-duty operations.

 

Third gear speed adjustment                                                                    13000/20000/24000r/min covers low, medium and high speed scenarios: low                                                                                                                                    speed (13000) is suitable for operations with high torque requirements (such as                                                                                                                              drilling and screwing), and high speed (24000) is suitable for efficiency-priority                                                                                                                                                  scenarios such as polishing and cutting.

 

power display                                                                                                  Monitor the remaining battery power in real time to avoid sudden power outages                                                                                                                               during work and improve battery life management efficiency (especially suitable                                                                                                                                                   for outdoor or no-power scenarios).

 

Forward and reverse rotation function                                                              Support clockwise/counterclockwise rotation to adapt to two-way operation                                                                                                                                  requirements such as drilling (forward rotation), screw withdrawal (reverse                                                                                                                                rotation), polishing and polishing (two-way adjustment), and enhance tool versatility.

 

safety lock                                                                                                              Prevent accidental touch and start. After pressing the lock switch for a long                                                                                                                                       time, it requires a second confirmation before running, which improves                                                                                                                       operation safety (especially suitable for tool storage or multiple people sharing scenarios).

 

 

2. Typical application scenarios and uses

 

(1) Metal processing field

Drilling and tapping

The 21V brushless motor has sufficient torque, and holes of φ3-φ10mm can be drilled in steel plates (thickness ≤5mm) and aluminum alloy profiles. The low speed gear (13000r/min) is matched with a metal drill bit to avoid high-speed slipping or overheating; M4-M8 thread processing can be completed with tapping collet.

 

Polishing and cutting

The high-speed gear (24000r/min) is adapted to louver blades and grinding wheels. It is used for rust removal on metal surfaces, welding polishing (such as steel structural parts), or cutting metal pipes (such as iron pipes and aluminum pipes with a diameter of ≤20mm). The efficiency is better than that of low-voltage models.

 

Polishing and deburring

Install wool wheels and polishing paste to mirror polish stainless steel products (such as kitchen utensils and decorative strips); use rotating files to remove burrs on metal parts (such as gears and edges of sheet metal parts).

 

(2) Wood and plastic processing

Woodworking Drilling and Opening

Medium speed gear (20000r/min) is matched with twist drills or hole cutters to quickly drill holes in solid wood (thickness ≤50mm) and plates (such as MDF, multilayer boards) for furniture assembly and tenon and tenon connection; Low speed gear is suitable for deep hole drilling (to avoid wood cracking).

 

Milling and shaping

Install woodworking milling cutters to round and slot the edges of the wooden boards (such as wardrobe edge sealing, drawer track grooves). High-speed gears can be combined with the base of the edger to achieve fine milling, suitable for DIY woodworking or small furniture factories.

 

plastics processing

Drilling or cutting on PVC plates and acrylic plates (a special plastic drill/saw blade is required). The positive and negative rotation function can prevent the plastic from melting and sticking to the knife. The safety lock prevents the plate from being damaged due to improper operation.

 

(3) Architectural and decoration scenes

Wall/floor work

Install a concrete drill bit and drill holes of φ6-φ12mm in brick walls and lightweight concrete (for expansion screw fixation). 21V power can cope with medium hardness substrates; use sandpaper discs to polish the wall putty layer, and improve leveling efficiency at high speed.

 

Tile and stone treatment

Use the special drill bit for ceramic tiles to drill holes on the surface of the ceramic tiles (low pressure is required to avoid cracking); install diamond cutting pieces to cut the corners of small ceramic tiles (such as local cutting during kitchen and bathroom decoration).

 

(4) Automobile and machinery maintenance

Disassembly, assembly and fastening

The positive and negative rotation function is combined with the sleeve head to quickly disassemble and disassemble car screws (such as tires and engine guard plates). Low speed and high torque are suitable for tightening high-strength bolts; the safety lock prevents the tool from accidentally starting during maintenance.

 

Parts polishing and polishing

Install the emery cloth wheel to polish the rust or putty layer of the car's sheet metal parts (such as scratch repair). The high-speed gear and the polishing wheel can partially polish the car paint to restore luster.

 

 

3. Functional advantages and extension of usage scenarios

Core advantages of brushless motors

Efficient and energy-saving: The brushless motor reduces energy loss, and the life of the 21V battery pack is about 50% longer than that of brushed tools with the same voltage. It is suitable for long-term outdoor operations (such as construction sites and field maintenance).

Low maintenance costs: No need to replace carbon brushes, and the motor life can reach more than 1000 hours. It is suitable for frequent use by professional users (such as decoration companies and machinery repair shops).

 

Flexible adjustment of third-gear speed

Low speed (13000r/min): Torque first, suitable for drilling, screwing, tapping and other scenarios that require stable strength.

Medium speed (20000r/min): Balancing efficiency and accuracy, suitable for wood milling, plastic cutting, and metal deburring.

High speed (24000r/min): Efficiency comes first, suitable for metal polishing, polishing, and small cutting operations.

 

Security and Human-friendly Design

The power display avoids "power outage embarrassment" and is especially suitable for high-altitude work (such as installation of chandeliers and scaffold construction); the safety lock prevents children from accidentally touching it or accidentally starting when tools fall, and complies with industrial safety standards.

 

 

4. Supporting accessories and extended use

Common accessory collocation

Drilling categories: metal bits, woodworking bits, tile bits, hole openers.

Polishing categories: sandpaper discs, louvers, rotating files, wool wheels.

Cutting categories: grinding wheel cutting blades, woodworking saw blades, plastic saw blades.

Fastening type: sleeve head, batch head (assembling and disassembling adapter screws).

 

extended scenes

Gardening: Cutting branches (with woodworking blades), drilling holes in flower pots (installing drain holes).

Home DIY: furniture assembly, wall shelf installation, handicraft processing.

 

 

5. Matters needing attention

Load matching: Although the 21V brushless motor has strong power, it is not recommended for over-specification operations (such as metal drilling with a diameter of>10mm and wood cutting with a thickness of>30mm) to avoid overloading the motor and heating.

 

Battery management: Use a dedicated 21V lithium battery to avoid overcharging (power off in time after the battery display 100%) and extend battery life.

 

Safe operation: Wear goggles and gloves when working at high speeds to ensure that the workpiece is fixed firmly and prevent danger caused by splashing or shaking.

 

 

 

 

 

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