Air Random Orbital Sander

GPS-304 Series

  • Oil Free.
  • Built-in Speed Regulator.
  • Bearing-Oil Leakage prevention performs longer life.
  • Housing Shroud totally protects housing from dust adhesion.
  • No Spanners Needed when Replacing Pad.
  • Unique Cylinder-Air-Inlet ensures less maintenance damage.
  • 360 degree rotate + 33 degree swivel Exhaust Tube offers wide operating phase. (Vacuum Type)
  • 360 degree Adjust Exhaust Tube (Non-Vacuum Type)
Specifications of GPS-304 Air Random Orbital Sander
Model GPS-304N
(No Vacuum)
GPS-304C
(Central Vacuum)
GPS-304S
(Self-Generated Vacuum)
Pad Size 3", 3-1/2", 5", 6" 5", 6" 5", 6"
Max Speed 12,000 RPM
Net Weight (No Pad) 0.69 kg 0.75 kg 0.74 kg
Length (No Pad) 160 mm 251 mm 241 mm
Height (No Pad) 86 mm
Air Cons. 0.27 m3/min
8.3 cfm
Air Inlet 1/4"
Hose Size (I.D.) 6.5 mm
Air Pressure 90 psi
Sound Pressure 81 dBA 84 dBA 84 dBA
Vibration < 2.5 m/sec2
Diameter Orbit 2.5mm (3/32") for Ultra-Fine Sanding
5.0mm (3/16") for General Sanding
7.0mm (9/32") for Aggressive Sanding


Model Number Code of GPS-304 Air Random Orbital Sander
Pad Size Diameter Orbit Non Vacuum Central Vacuum Self-Generated Vacuum
6" 2.5 mm GPS-304N6A GPS-304C6A GPS-304S6A
5.0 mm GPS-304N6B GPS-304C6B GPS-304S6B
7.0 mm GPS-304N6C GPS-304C6C GPS-304S6C
5" 2.5 mm GPS-304N5A GPS-304C5A GPS-304S5A
5.0 mm GPS-304N5B GPS-304C5B GPS-304S5B
7.0 mm GPS-304N6C GPS-304C6C GPS-304S6C
3-1/2" 2.5 mm GPS-304N4A    
5.0 mm GPS-304N4B    
7.0 mm GPS-304N4C
3" 2.5 mm GPS-304N3A    
5.0 mm GPS-304N3B    
7.0 mm GPS-304N3C


Features Air Random Orbital Sander
GPS-301
Air Random Orbital Sander
GPS-302
Air Random Orbital Sander
GPS-303
Air Random Orbital Sander
GPS-304
Bearing-Oil Leakage prevention performs longer life. O O O O
Housing Shroud totally protects housing from dust adhesion. X GPS-302 Air Random Orbital Sander GPS-303 Air Random Orbital Sander
No Spanners Needed when Replacing Pad. X X O O
Optional Safety Lever X X O X
Unique Cylinder-Air-Inlet ensures less maintenance damage. O O O O
360 degree rotate + 33 degree swivel Exhaust Tube offers wide operating phase. (Vacuum Type) O O O O
360 degree Adjust Exhaust Tube (Non-Vacuum Type) O O O O

Bearing-Oil Leakage prevention performs longer life. Housing Shroud totally protects housing from dust adhesion. No Spanners Needed when Replacing Pad.

Catalogs of GPS-301/302/303/304 Series Air Random Orbital Sander

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GISON Air Random Orbital Sander OEM/ODM Service

GISON MACHINERY CO., LTD. is Taiwan Air Random Orbital Sander supplier and manufacturer with more than 39 years experence. Since 1973, in the hareware, air Tools, pneumatic Tools and accessory industries market, GISON has been offering our customers high quality Air Random Orbital Sander production service. With both advanced technology and 39 years experience, GISON always make sure to meet each customer's demand.

Contact Us

GISON MACHINERY CO., LTD.
Tel: + 886-4-23353202
Fax: + 886-4-23352252, + 886-4-23357742
Email: gison@seed.net.tw, sales@gison.com

No.6, Alley 105, Lane 68, Sec. 2, Sinan Road, Wurih, Taichung 41466, Taiwan

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