Cleco MP4201 Right Angle Pencil Grinder | MP Series | 0.6 HP | 70000 RPM | 1/8" Collet | Rear Exhaust

When detail grinding needs a compact head that can reach around edges, inside small features, or into tight fixture areas, the Cleco MP4201 Right Angle Pencil Grinder gives operators a high-speed, low-profile option for precision finishing work. Its right-angle configuration places the abrasive accessory at 90 degrees to the tool body, making it easier to approach confined surfaces that are awkward for an inline pencil grinder. The 70,000 RPM free speed supports small mounted points, carbide burrs, and diamond pins used for fine deburring, blending, and smoothing on machined parts, castings, molds, and repair components.

Part of the Cleco MP Series, the MP4201 is built for production and MRO work where control, access, and surface detail matter. The 1/8" collet fits common pencil-grinder accessories, while the rear exhaust directs air away from the work area to help keep chips and dust from blowing across the finish surface. Cleco’s current MP Series product information lists this grinder family at 0.06 HP / 0.044 kW; please review the Notes for Review section before publishing because some distributor listings show conflicting horsepower and air inlet data.

Type: Right Angle Pencil Grinder | Series: MP Series | Model: MP4201 | Power Output: 0.06 HP / 0.044 kW | Free Speed: 70,000 RPM | Collet Size: 1/8" and 3 mm collets included | Abrasive Capacity: 1/4" Carbide Burr, 1/4" Diamond Pin | Length: 5.9" / 150 mm | Weight: 0.43 lbs / 0.2 kg | Exhaust: Rear | Air Pressure: 90 PSI / 620 kPa | Standard Hose Setup: 5 ft air hose and 1 ft overhose

Features:

• Right angle pencil-grinder head improves access to confined edges, small pockets, and surfaces that are difficult to approach with a straight tool.
• 70,000 RPM free speed supports controlled detail work with compatible high-speed carbide burrs, mounted points, and diamond pins.
• Rear exhaust directs air away from the work surface to help reduce chip and dust disturbance during finishing.
• Slim, comfortable body shape gives the operator fingertip control for fine deburring and smoothing tasks.
• Standard with 5 ft air hose and 1 ft overhose for use at bench, toolroom, and production workstations.
• Includes both 1/8 in and 3 mm collets for common inch and metric accessory shank sizes.
• MP Series configuration is suited to precision deburring, blending, and smoothing in production and maintenance environments.

Made in USA:

Applications:

• Aerospace and precision manufacturing: Blending small edges, cleaning machined features, and finishing compact component details.
• Mold and die work: Reaching into small cavities, contours, and parting-line areas with compatible mounted points or carbide burrs.
• Machining and toolroom stations: Removing burrs from drilled holes, milled slots, fixture plates, and small fabricated parts.
• Industrial MRO: Detail cleanup on brackets, housings, castings, and repair parts where a larger die grinder is too bulky.
• Automotive and small-engine repair: Light port cleanup, gasket-surface detail work, and controlled finishing in tight spaces when accessory speed ratings are matched correctly.

FAQs:

• Q: What is the advantage of the right angle head on the MP4201?
  A: The right angle head lets the operator approach the work from the side instead of straight on. This helps when deburring tight pockets, inside corners, and features that an inline pencil grinder cannot comfortably reach.
• Q: What accessories fit this pencil grinder?
  A: The MP4201 uses 1/8 in and 3 mm collets, so accessories must have matching shank sizes. Common compatible accessories include small carbide burrs, mounted points, and diamond pins rated for the tool’s speed.
• Q: Why is accessory RPM rating important on a 70,000 RPM grinder?
  A: Any abrasive or rotary accessory must have a maximum operating speed equal to or higher than 70,000 RPM. Using an accessory below the tool speed rating can cause accessory failure and serious injury.
• Q: Is the MP4201 meant for heavy stock removal?
  A: No. This is a precision pencil grinder for light deburring, blending, and smoothing. For larger burrs, mounted wheels, or heavier removal work, choose a larger die grinder with the correct collet size and power output.
• Q: Does rear exhaust help when working on finished surfaces?
  A: Yes. Rear exhaust routes air away from the abrasive contact point, which can help keep chips and dust from blowing back over the work surface during detail finishing.

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Need help selecting the correct Cleco Pencil Grinders for your application? Please call (800) 608-5210 or email info@intlairtool.com