2170821 - Angle Grinder Kooper - Free user manual and instructions
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| Product type | Angle grinder |
| Brand | Kooper |
| Model | 2170821 |
| Power source | Corded electric, 220-240 V AC |
| Rated power | 750 W |
| No-load speed | 11,000 rpm |
| Disc diameter | 115 mm (4-1/2 in) |
| Spindle thread | M14 |
| Weight | 2.1 kg (4.6 lbs) |
| Dimensions (L x W x H) | 310 x 140 x 120 mm |
| Soft start | Yes |
| Speed adjustment | No (single speed) |
| Safety guard | Adjustable, tool-free |
| Handle type | Side handle (vibration-damped) |
| Spindle lock | Yes |
| Overload protection | Thermal overload protection |
| Carbon brush access | External, serviceable |
| Cooling system | Integrated air vents |
| Cleaning | Clean exterior with dry cloth after each use |
| Maintenance | Check carbon brushes and air vents regularly |
| Spare parts availability | Available from Kooper service centers |
| Included accessories | Guard, side handle, flange, lock nut, wrench |
| Certifications | CE, RoHS |
Frequently Asked Questions - 2170821 Kooper
What is the maximum disc size for the Kooper 2170821 angle grinder?
The Kooper 2170821 supports a maximum disc diameter of 115 mm (4-1/2 inches).
Does the Kooper 2170821 have a soft start function?
Yes, it is equipped with soft start to reduce startup torque and minimize kickback.
How do I change the disc on the Kooper 2170821?
Use the supplied wrench to loosen the lock nut while pressing the spindle lock. Replace the disc and tighten the nut securely.
Is the Kooper 2170821 suitable for cutting metal?
Yes, with a suitable cutting disc, it can cut metal, tile, or masonry depending on the disc type.
Can I use the angle grinder for polishing?
Yes, you can attach a polishing pad or flap disc for polishing or surface finishing, provided the accessories are rated for 115 mm.
What is the no-load speed of the Kooper 2170821?
The no-load speed is 11,000 rpm, which is typical for this size of angle grinder.
How often should I replace the carbon brushes?
Carbon brushes should be checked every 50-100 operating hours. Replace them if they are worn beyond 5 mm or if sparking increases.
What safety precautions should I take when using this grinder?
Always wear safety goggles, gloves, and ear protection. Ensure the guard is in place, and do not use without proper hand support.
Can I use this grinder with a diamond blade?
Yes, you can use a 115 mm diamond blade for cutting concrete or masonry, but ensure the blade speed rating exceeds the grinder's no-load speed.
Is the Kooper 2170821 dust protected?
It has integrated air vents that help reduce dust ingress, but it is not fully dustproof. Regular cleaning of the vents is recommended.
User questions about 2170821 Kooper
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USER MANUAL 2170821 Kooper
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Product information
Brand : Kooper
Model : 2170821
Category : Angle Grinder