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Help Center20V Angle Grinder BAG21125: 8500RPM, 125mm, Soft Start - Power Meets Portability
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Detailed Explanations of Key Technical Terms:
1. Ergonomically designed
Explanation: "Ergonomic" refers to the science of designing equipment and devices that fit the human body’s natural posture and movements. An ergonomically designed handle reduces hand fatigue, improves control, and enhances user comfort during prolonged use.
Similar Usage Scenarios:
Office chairs with lumbar support are ergonomically designed to support the spine.
Computer mice shaped to fit the hand naturally are called ergonomic mice.
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Example Sentence:
The ergonomic design of this power tool reduces strain during extended use.
2. No-Load Speed
Explanation: This is the maximum rotational speed (measured in revolutions per minute, or rpm) a motor reaches when running without any load or resistance (e.g., no grinding disc attached or in use). It indicates the tool’s potential speed range under ideal conditions.
Note: Actual speed under load (during cutting or grinding) will be lower due to resistance.
Similar Usage Scenarios:
Drills, sanders, and routers all list no-load speed in their specs.
A high no-load speed often means faster material removal but may require more control.
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Example Sentence:
The drill has a no-load speed of 1,200 rpm, making it suitable for fast hole drilling in wood.
3. Grinding Wheel Diameter
Explanation: The diameter of the abrasive disc used on an angle grinder. A larger diameter (like 125mm) allows deeper cuts and broader surface coverage, increasing efficiency for heavy-duty tasks.
Common Sizes:
115mm: for precision or tight-space work.
125mm: general-purpose use, balances power and maneuverability.
230mm: for industrial cutting.
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Example Sentence:
A 125mm grinding wheel is ideal for both cutting metal and smoothing welds.
4. Spindle Thread: M14
Explanation: "M14" refers to a metric screw thread with a 14mm diameter. On angle grinders, this is the standard thread size on the spindle (output shaft) for securing grinding or cutting discs with a flange nut.
Why It Matters: Standardization (M14) ensures compatibility with a wide range of accessories.
Similar Threads:
M5, M6: used in small rotary tools.
5/8"-11 (imperial): common in North American grinders.
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Example Sentence:
Always ensure the disc’s center hole matches the spindle thread — M14 is standard for most European angle grinders.
5. Soft Start Function
Explanation: A feature where the motor gradually increases speed upon startup instead of reaching full speed instantly. This reduces the initial surge of current (inrush current), protecting the motor and electronics, and improves safety by preventing sudden jerking or kickback.
Benefits:
Extends motor lifespan.
Safer for users, especially in one-handed operation.
Reduces wear on battery and circuitry in cordless tools.
Similar Usage Scenarios:
Soft start is common in high-power appliances like compressors and blenders.
Found in modern LED drivers and motor controllers.
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Example Sentence:
Thanks to the soft start function, the angle grinder accelerates smoothly, giving the user better control from the moment it turns on.
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