Description
Jet 402121 .6 HP 1/4″ 3″ Extended Die Grinder
The Jet 402121 .6 HP 1/4″ 3″ Extended Die Grinder:
- Product no. 402121
- Model no. MG3HDE
- 3″ Extended Shaft with 2 large precision ball bearings for smooth, accurate performance and minimal run-out
- Extended shaft is made from solid bar stock with 3 precision ball bearings
- Inside housing is precision machined and polished
- Ideal for most heavy duty industrial applications, especially for getting into hard to reach areas
- Equipped with a powerful 0.6 HP motor
- Front exhaust
- Compact motor housing
- Ball bearings on front and back of motor shaft
- Motor end plates made of durable die cast aluminum metal for maximum life and superior performance
- Special “coupling nut” connects motor to extended shaft – absorbs vibration and makes dismantling for repair easy
- Third ball bearing on the coupler provides smoother operation and longer life
- Comfortable, safe, insulating vinyl cover
- Easy-to-use lever throttle with roller tip
- Screen on air inlet filters air line debris for longer motor life
- Delivers outstanding power, performance, durability and life
- 90 PSI working air pressure recommended for maximum performance
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| JET 1/4″ Die Grinder Comparison Chart | |||||
| Product no. | 402113 | 402114 | 402115 | 402118 | 402121 |
| Model no. | MG90HD | MG1HD | MG6HDE | DG115HD | MG3HDE |
| Motor HP | 0.6 | 0.6 | 0.6 | 0.3 | 0.6 |
| Collet Size | 1/4″ | 1/4″ |
1/4″ | 1/4″ | 1/4″ |
| Free Speed (RPM) | 14,500 | 20000 | 20,000 | 20,000 | 20,000 |
| Overall Length | 7-1/2″ | 5-3/4″ | 12″ | 7-5/8″ | 9-3/4″ |
| Avg. Air Consumption (CFM) | 5 | 4.5 | 4.5 | 4 | 5.1 |
| Min. Hose Size | 3/8″ | 3/8″ | 3/8″ | 3/8″ | 3/8″ |
| Air Inlet (NPT) | 1/4″ | 1/4″ | 1/4″ | 1/4″ | 1/4″ |
| Sound Pressure (dBA) | 95 | 95 | 93 | 79 | 88 |
| Vibration (m/s²) | 2.0 | 1.8 | 4.6 | 1.22 | 2.2 |
| Weight | 2 lb (0.9 kg) | 1.35 lb (0.61 kg) | 2.72 lb (1.22 kg) | 1.25 LB (0.56 KG) | 1.89 lb (0.85 kg) |
| JET 1/4″ Die Grinder Selection Chart | ||
| Standard Duty | Heavy Duty | Super Heavy Duty |
| Choose your JET Product no. / Model no. | ||
| 402108 / MDG144Z 0.3 HP Mini | 402113/ MG90HD 0.6 HP 90º Angle | 402116/ DG149HD 0.9 HP |
| 402109 / MDG1 0.3 HP Mini | 402114/ MG1HD 0.6 HP Mini | – |
| 402110/ MDG90 0.3 HP Mini 90º Angle | 402115/ MG6HDE 0.6 HP 6″ Extended | – |
| 402120/ MG90P 0.3 HP 90º Pistol Grip | 402118/ DG115HD 0.3 HP 115º Angle | – |
| – | 402121/ MG3HDE 0.6 HP 3″ Extended | – |
| – | 402123 / MG19HD 0.9 HP | – |
| – | 402124 / MG69HDE 0.9 HP 6″ Extended | – |
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