JAT-450, 4" Angle Grinder

JAT-450, 4" Angle Grinder

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JAT-450, 4" Angle Grinder

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High-quality tools designed for daily, 8 hour use in demanding applications and environments, the R8 Series are engineered with additional features for improved power, safety and comfort.


  • 4" wheel size
  • Precision spiral bevel gears transfer torque and speed to spindle for added durability
  • Easy to use spindle lock system holds the cutting wheel for quick disc changes
  • Tapered angle gear housing allows greater visibility of targeted work area
  • Ergonomically designed grip absorbs vibration and reduces hand fatigue
  • Tool-less wheel guard swivels 360° with 9 preset positions
  • Safety throttle lock prevents accidental engagement
  • Variable-speed throttle ramps up to maximum RPM
  • Two-position auxiliary handle for versatility
  • Rugged, ball-bearing design for durability
  • Lightweight composite handle
  • Grinding wheel not included
  • Performace @ 90 PSI. Air Inlet NPT 3/8". Min Hose Size 3/8"


  • Classification R 8
  • Wheel Size (In.) 4 x 5/8 x 1/4
  • Spindle Thread (In./TPI) 3/8"-24 UNF
  • Horse Power (HP) 0.9
  • Free Speed (RPM) 12,000
  • Air Inlet (NPT/In.) 1/4
  • Air Hose (ID/In.) 3/8
  • Air Pressure (PSI) 90
  • Air Consumption (CFM) 4
  • Sound Power (db) (A) 91
  • Sound Pressure (db) (A) 83
  • Vibration Value (m/s²) 2.4
  • Overall Length (In.) 9-3/8
  • Weight (Lbs.) 3.99

Warranty Information

Red Assurance Lifetime Warranty

Red Assurance Lifetime Warranty

We are confident of every Air Tool we manufacture. To prove it, we back every Air Tool that bears the JET name with a Lifetime Warranty. The JET Lifetime Warranty covers manufacturer's defects, but does not cover misuse, abuse, accidents, negligence, wear and tear, improper repair or alternations.

1 Year Wear and Tear

1 Year 'Wear & Tear' Coverage

JET covers all Air Tool repair costs including parts and labor for the first year of ownership. Proof of purchase is required. JET's 'Wear & Tear' Coverage does not cover misuse, abuse, accidents, negligence, improper maintenance, repair or alterations.


Full Series

Stock No.Model No.ClassificationCollet Size (In.)Wheel Size (In.)Spindle Thread (In./TPI)Body TypePurchase
Stock No.505404Model No.JAT-404ClassificationR 8Collet Size (In.)1/4Wheel Size (In.)-Spindle Thread (In./TPI)-Body TypeFull, StraightBuy Now >> 505405
Stock No.505405Model No.JAT-405ClassificationR8Collet Size (In.)1/4Wheel Size (In.)-Spindle Thread (In./TPI)-Body TypeMini, Right AngleBuy Now >> 505406
Stock No.505406Model No.JAT-406ClassificationR8Collet Size (In.)1/4Wheel Size (In.)-Spindle Thread (In./TPI)-Body TypeMini, 115° AngleBuy Now >> 505450
Stock No.505450Model No.JAT-450ClassificationR 8Collet Size (In.)-Wheel Size (In.)4 x 5/8 x 1/4Spindle Thread (In./TPI)3/8"-24 UNFBody Type-Buy Now >> 505451
Stock No.505451Model No.JAT-451ClassificationR 8Collet Size (In.)-Wheel Size (In.)5 x 7/8 x 1/4Spindle Thread (In./TPI)5/8"- 11 UNCBody Type-Buy Now >> 505452
Stock No.505452Model No.JAT-452ClassificationR 8Collet Size (In.)-Wheel Size (In.)7 x 7/8 x 1/4Spindle Thread (In./TPI)5/8"- 11 UNCBody Type-Buy Now >> 505452

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