GCA 30-9 Professional - Uncategorized BOSCH - Free user manual and instructions

Product Type	Angle Grinder
Brand	Bosch
Model	GCA 30-9 Professional
Rated Power Input	900 W
No-Load Speed	11,000 rpm
Disc Diameter	125 mm
Spindle Thread	M14
Weight	2.4 kg
Dimensions (L x W x H)	345 x 125 x 110 mm
Power Supply	Corded, 230 V / 50 Hz
Protection Class	II (Double insulated)
Main Functions	Grinding, cutting, brushing, sanding
Soft Start	Yes
Restart Protection	Yes
Overload Protection	Yes
Spindle Lock	Yes
Vibration Control	Side handle with vibration damping
Maintenance	Regular cleaning of air vents and carbon brush replacement
Safety Features	Guard, safety switch, anti-rotation protection
Spare Parts Availability	Bosch service centers and online
Repairability	Modular design, user-replaceable carbon brushes
Included Accessories	Side handle, wrench, guard

Frequently Asked Questions - GCA 30-9 Professional BOSCH

What is the maximum disc diameter for the Bosch GCA 30-9 Professional?

The maximum disc diameter is 125 mm. Always use discs rated for speeds up to 11,000 rpm.

How do I change the grinding disc?

Press the spindle lock to hold the spindle, then use the supplied wrench to loosen the flange nut. Replace the disc and tighten the nut securely.

Can I use the grinder for cutting metal?

Yes, with an appropriate cutting disc. Ensure the disc is rated for the tool's speed and that you use the correct guard for cutting.

What safety precautions should I take?

Always wear safety goggles, gloves, and hearing protection. Ensure the guard is in place, and never operate with damaged discs. Disconnect power before changing accessories.

How often should I replace the carbon brushes?

Check carbon brushes every 50 operating hours. Replace them when they are shorter than 5 mm to avoid motor damage.

Why does my grinder vibrate excessively?

Excessive vibration may indicate a worn disc or an unbalanced accessory. Check the disc for damage and replace if necessary. Also ensure the side handle is tight.

What is the restart protection feature?

If the power is interrupted and restored, the tool will not restart automatically. This prevents accidental startup. Press the on/off switch again to resume.

Can I use a wire brush on this grinder?

Yes, use a twisted wire cup brush with a M14 thread. Ensure the brush rating matches the tool speed. Always wear protective gear.

How do I clean the air vents?

Use a soft brush or compressed air to remove dust from the air vents regularly. Blocked vents can cause overheating.

Where can I find spare parts?

Spare parts are available at Bosch service centers and authorized dealers. You can also order online using the model number GCA 30-9 Professional.

USER MANUAL GCA 30-9 Professional BOSCH

OBJ BUCII-2608-002.book Page 1 Wednesday, May 18, 2016 4:23 PM

3D rendering of a mechanical housing component with curved top and side slots (no text or symbols)

Robert Bosch Power Tools GmbH

70538 Stuttgart

GERMANY

www.bosch-pt.com

1609 92A 330 (2015.08) PS/4

GCA 30-9 Professional

BOSCH

2

3D diagram of a device with a labeled arrow pointing to a screen (no text or symbols present)

1 609 92A 330 | (18.5.16) Bosch Power Tools

OBJ_BUCH-2608-002.book Page 3 Wednesday, May 18, 2016 4:21 PM

3

Diagram showing a mechanical assembly with two connected components, one with a valve and the other with a plug (no text or symbols present)

Bosch Power Tools 1 609 92A 330 | (18.5.16)