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Makita
Makita Corded 4-1/2-in. Angle Grinder, with AC/DC Switch (9557NB2)

Makita Corded 4-1/2-in. Angle Grinder, with AC/DC Switch (9557NB2)

Best price now

$29.00at WeBuyTools.comChecked 12 h ago

79% under what the other stores charge

Compared across 13 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $29.00 at WeBuyTools.com (checked Nov 13, 2026).
  • Checked at 13 stores.

Our take on the Makita Corded 4-1/2-in. Angle Grinder, with AC/DC Switch (9557NB2)

The Makita 9557NB2 is a corded 4-1/2 in. angle grinder with a 7.5 amp motor that spins at 11,000 RPM. Its 2-1/2 in. barrel grip and 4.5 lb weight make it one of the more compact grinders in its class, and the AC/DC slide switch lets it run off a generator or other DC source. Dust sealing is the selling point: a labyrinth seal and zig-zag varnish protect the motor and gear from grit. It suits metalworkers and fabricators who want a light, tough grinder for cutting and grinding; it lacks the tool-free guard and vibration control of premium models.

Best forMetal cutting and weld grindingFabricators and weldersWork where a generator or DC source is usedBuyers who want a light, compact grinder
Pros
  • 7.5 amp motor at 11,000 RPM for steady cutting and grinding
  • Light at 4.5 lbs with a slim 2-1/2 in. barrel grip
  • Labyrinth seal and zig-zag varnish resist dust and grit
  • AC/DC switch works with alternative power sources
  • All ball-bearing build and metal gear housing
Cons
  • No tool-free guard adjustment
  • No vibration-dampening handle
  • Slide switch can be awkward for some users
  • Corded only, so no cordless freedom

Makita Corded 4-1/2-in. Angle Grinder, with AC/DC Switch (9557NB2) prices at every store

  • WeBuyTools.comNew

    In stockReturn policy

    $29.00Checked 12 h ago
    Visit WeBuyTools.com
  • The Power Tool StoreNew

    In stockReturn policy

    $199.00Checked 12 h ago
    Visit The Power Tool Store
  • KPaul IndustrialNew

    In stockReturn policy

    $199.00Checked 12 h ago
    Visit KPaul Industrial
  • Tool NutNew

    In stock

    $199.00Free shippingChecked 12 h ago
    Visit Tool Nut
  • ArborNew

    Availability unknown

    $98.75Checked 12 h ago
    Visit Arbor
  • Northern ToolNew

    Availability unknown

    $99.00Checked 12 h ago
    Visit Northern Tool
  • T&A Industrial DistributorsNew

    Availability unknown

    $100.10Checked 12 h ago
    Visit T&A Industrial Distributors
  • eBayNew

    Availability unknownSold by toolup

    $106.60Checked 12 h ago
    Visit eBay
  • WalmartNew

    Availability unknownSold by Supply the Home

    $111.33Checked 12 h ago
    Visit Walmart
  • MSC Industrial SupplyNew

    Availability unknown

    $137.11Checked 12 h ago
    Visit MSC Industrial Supply
  • RSNew

    Availability unknownSold by America

    $143.19Checked 12 h ago
    Visit RS
  • ToolUp.comNew

    Availability unknown

    $199.00Checked 12 h ago
    Visit ToolUp.com
  • AirgasNew

    Availability unknown

    $219.00Checked 12 h ago
    Visit Airgas

Also available at

  • ToolupCheck price at Toolup
  • Tool NutCheck price at Tool Nut

Store links may earn us a commission.

Makita Corded 4-1/2-in. Angle Grinder, with AC/DC Switch (9557NB2) price history

Lowest price we've seen: $98.75 on Nov 13 at Arbor. Tracked across 10 stores since Nov 13.

What reviewers say

Owners of Makita's 4-1/2 in. grinders generally rate them as dependable, long-lived tools with good power for their size. Complaints tend to center on the guard and switch rather than the motor.

What people mention
  • PowerPraisedOwners say the 7.5 amp motor keeps speed up through cuts and grinding.
  • WeightPraisedThe 4.5 lb body and slim barrel are called easy to handle.
  • DurabilityPraisedUsers report the sealed motor and gear housing survive dusty job sites.
  • GuardCriticisedReviewers find the guard slower to adjust than tool-free guards on rivals.
  • SwitchMixedSome like the slide switch; others prefer a paddle for quick shutoff.
  • VibrationCriticisedLong grinding sessions leave some users wishing for a dampened handle.

About the Makita Corded 4-1/2-in. Angle Grinder, with AC/DC Switch (9557NB2)

The Makita 9557NB2 is a corded 4-1/2 in. angle grinder with a 7.5 AMP motor that maintains 11,000 RPM. It is UL-listed and has an AC/DC slide switch for use with an alternative power source.

Labyrinth construction seals and protects the motor, bearings and drive gear from dust and debris. A zigzag varnish forms an additional barrier that seals the armature from contaminants. The grinder also has thicker coil wires, an all ball-bearing design and a metal gear housing for durability.

The barrel-grip handle has a small 2-1/2 in. circumference, and the grinder weighs 4.5 lbs. A slide switch controls operation.

Type
Corded angle grinder
Wheel size
4-1/2 in.
Motor
7.5 AMP
Speed
11,000 RPM
Switch
Slide switch with AC/DC option
Handle
Barrel grip, 2-1/2 in. diameter
Weight
4.5 lbs.
Housing
Metal gear housing
Bearings
All ball-bearing design
Certification
UL-listed
In the box
Grinding wheel, wheel guard, side handle, inner flange, lock-nut, wrench

Questions and answers

Is the Makita 9557NB2 good for cutting metal?
Yes. The 7.5 amp motor holds 11,000 RPM, which is enough for cutting and grinding with 4-1/2 in. wheels. Use the correct wheel for the material.
Can it run off a generator?
Yes. The AC/DC slide switch lets it run from an alternative DC power source as well as a standard outlet.
What comes in the box?
A grinding wheel, wheel guard, side handle, inner flange, lock-nut and wrench.
How does it compare with a variable-speed grinder?
This is a single-speed model. Variable-speed grinders cost more but let you slow the wheel for polishing and delicate work.
Is it heavy to use overhead?
At 4.5 lbs it is on the light side for a corded 4-1/2 in. grinder, which helps in overhead work.
Where is the Makita Corded 4-1/2-in. Angle Grinder, with AC/DC Switch (9557NB2) cheapest?
At WeBuyTools.com, for $29.00, 79% under what the other stores charge, as of our latest check.
Where can I buy the Makita Corded 4-1/2-in. Angle Grinder, with AC/DC Switch (9557NB2)?
13 stores we checked sell it, including ToolUp.com, The Power Tool Store, KPaul Industrial, WeBuyTools.com, Arbor.

Stores we've priced the Makita Corded 4-1/2-in. Angle Grinder, with AC/DC Switch (9557NB2) at

  • Arbor deals and prices
  • MSC Industrial Supply deals and prices
  • Northern Tool deals and prices
  • Tool Nut deals and prices
  • Walmart deals and prices

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