The unit is light, powerful, compact and a versatile grinder. Suitable for rapidly carrying out the main process of taping and grinding of ferrules and typical manufactured items for boilers, such as:

• back goughing for welding root removal
• polishing of dish ends, vessels, cones, poles, etc.
• tack-weld edge prep by grinding
• weld seam over-thickness removal

GBC G400 shown mounted on trolley, during typical back gouging operation, circumferential on OD of pressure vessel. Trolley allows easy handling and moving of the grinding head.

GBC G400 mounted on column welding boom arm. Unit equipped with needle bearing kit for 360° rotation. This layout allows back gouging circumferential, longitudianl, outside and inside on big diameter pressure vessels.

FEATURES Use of the GBC G400 Grinder provides a solid evolution in all grinding operations on boilers and pressure vessels with the following advantages compared to manual execution by a single operator with an angle grinder:

• Time savings up to 80% for back gouging operations
• High material rate removal
• No thermal alteration (heat affected zone) of welding area
• Same job accuracy all over work piece
• Vibration free
• Improvement of safety & working conditions
• Drop of on-duty injuries (grinding sparks, tendinitis, sprains, stress fractures) due to extended angle grinder handling time

G400 Grinder head feeding system is pneumatic which retracts the feeding piston when meeting ovality on the piece which prevents an overage of removed material. Operator then restores the correct feeding rate for the grinding disc on the vessel.

Grinding head can turn 90° for dedicated set up when performing longitudianl back gouging (mounted on column welding boom arm only).


Standard equipment:

• Electric motor 3 phase-380V - 50 Hz (different voltage available on request)
• Remote control
• Electric drifting compensation system
• Adjustable pneumatic feeding control system (floating head)
• Side protection
• Adapter for flap wheel mounting
• Service wrenches kit
• Drawings and spare parts list
• User Manual
• Guarantee & test certificate

Grinding head can turn 90° for dedicated set up when performing longitudinal back gouging (mounted on column welding boom arm only).



Standard equipment:

• Electric motor 3 phase-380V - 50 Hz (different voltage available on request)
• Remote control
• Electric drifting compensation system
• Adjustable pneumatic feeding control system (floating head)
• Side protection
• Adapter for flap wheel mounting
• Service wrenches kit
• Drawings and spare parts list
• User Manual
• Guarantee & test certificate

OD Circular gouging mininum diameter	mm	500
Longitudinal outside gouging minimum diameter	mm	500
Longitudinal inside gouging minimum diameter	mm	1500
Max grinding disc diameter	mm	400
Grinding disc thickness	mm	8-16
Motor power	mm	9
Maximum grinding wheel cutting speed	mm	65
Maximum diameter flap wheel	mm	300
Flap wheel width	mm	40-75
Feeding stroke	mm	135
Drifting stroke	mm	95
Max grinding depth	mm	80**
*Minimum tube elevation from ground 1 meter **If using brand new grinding wheel
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