Makita GA4530K 4-1/2 in. Angle Grinder
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Makita GA4530K 4-1/2 in. Angle Grinder
4-1/2 in. at 6 amps and 11,000 RPM. What is worth knowing about this grinder is not the numbers, which are ordinary, but what Makita did to keep grinding dust out of the motor, because that is what kills grinders rather than wear.
Labyrinth construction seals the motor and bearings, the armature is zig-zag varnished and the field is powder coated, so the abrasive dust that gets drawn through has less to bite on. Thumb slide switch with lock-on, and a case, wheel and side handle in the box.
- 6 amps at 11,000 RPM
- 4-1/2 in. wheel, 5/8 in. - 11 spindle
- Labyrinth construction seals the motor and bearings from dust
- Zig-zag varnished armature and powder coated field resist abrasion
- Thumb slide switch with lock-on
- Grinding wheel, wheel cover, side handle and case included
- Model GA4530K
Specifications
| Model | GA4530K |
| Wheel | 4-1/2 in. |
| Amps | 6 |
| No load speed | 11,000 RPM |
| Spindle | 5/8 in. - 11 |
| Switch | Thumb slide with lock-on |
| Overall length | 10-1/2 in. |
| Net weight | 4.0 lb. (1.8 kg) |
| Voltage | 120 V |
What's in the box
- GA4530K angle grinder
- 4-1/2 in. depressed centre wheel, 1 ea. (A-95956-25)
- Wheel cover (123098-1)
- Inner flange (224399-1)
- Lock nut 5/8 in. - 45 (224568-4)
- Lock nut wrench 28 (782424-9)
- Side handle (153504-2)
- Plastic carrying case (824736-5)
Questions
What does labyrinth construction do?
It puts a maze rather than a straight path between the outside and the bearings and windings, so grinding dust struggles to reach them. Dust in the motor is what finishes most grinders.
What wheels does it take?
4-1/2 in. wheels on a 5/8 in. - 11 spindle, which is the common North American thread. A depressed centre grinding wheel is in the box.
Does it have a lock-off?
It has a thumb slide switch with lock-on. There is no lock-off on this model, so treat it as live whenever it is plugged in.