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  • Brush Research FLEX-HONE Cylinder Hone, GB Series, Silicon Carbide Abrasive
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by BRUBT

Brush Research FLEX-HONE Cylinder Hone, GB Series, Silicon Carbide Abrasive

Available in multiple versions

73 customer reviews

Price: $27.09 - $65.29
Sale: Lower price available on select options
Product Specifications
Brand Name BRUBT
Grit Material Type silicon_carbide
Manufacturer Grade Standard Duty
Manufacturer Series Number GB
Shank Type Round
UNSPSC Code 31191500

Flex-Hone GB-series abrasive bead style brushes for block cylinders have globe-shaped abrasive... Read full product description



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Currently showing 1-15 of 15
Fits Hole Size Size Grit Type Overall Length Shank Diameter Max Rotational Speed Part Number Part Number Price Quantity
   
3.25 inches 3-1/4" 120 13.5 inches 0.310 inches 700 rpm GB31412 B002XUL1EO
In Stock (9)
$31.79
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3.25 inches 3-1/4" 180 13.5 inches 0.310 inches 700 rpm GB31418 B002XUL1EY
In Stock (6)
$31.79
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3.25 inches 3-1/4" 240 13.5 inches 0.310 inches 700 rpm GB31424 B002XUL1F8
In Stock (18)
$37.65
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3.5 inches 3-1/2" 120 13.5 inches 0.310 inches 700 rpm GB31212 B002XUL1DK
In Stock (5)
$35.56
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3.5 inches 3-1/2" 180 13.5 inches 0.310 inches 700 rpm GB31218 B002XUL1E4
In Stock (17)
$36.00
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3.5 inches 3-1/2" 240 13.5 inches 0.310 inches 700 rpm GB31224 B002XUL1EE
In Stock (16)
$36.37
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3.75 inches 3-3/4" 120 13.5 inches 0.310 inches 700 rpm GB33412 B002XUL1FI
In Stock (2)
$36.48
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3.75 inches 3-3/4" 180 13.5 inches 0.310 inches 700 rpm GB33418 B002XUL1FS
In Stock (2)
$36.48
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3.75 inches 3-3/4" 240 13.5 inches 0.310 inches 700 rpm GB33424 B002XUL1G2
In Stock (26)
$30.99
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4.125 inches 4-1/8" 120 13.5 inches 0.310 inches 600 rpm GB41812 B002XUL1GC
In Stock (25)
$45.92
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4.125 inches 4-1/8" 180 13.5 inches 0.310 inches 600 rpm GB41818 B002XUL1GM
In Stock (26)
$38.81
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4.125 inches 4-1/8" 240 13.5 inches 0.310 inches 600 rpm GB41824 B002XUL1GW
In Stock (47)
$41.12
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4.625 inches 4-5/8" 120 13.5 inches 0.310 inches 600 rpm GB45812 B002XUL1H6
In Stock (3)
$43.25
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4.625 inches 4-5/8" 180 13.5 inches 0.310 inches 600 rpm GB45818 B002XUL1HG
In Stock (7)
$43.25
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4.625 inches 4-5/8" 240 13.5 inches 0.310 inches 600 rpm GB45824 B002XUL1HQ
In Stock (1)
$45.84
Prime Eligible
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Product Features

  • Self-centering, self-aligning, and self-compensating for tool wear, to reduce set-up time and costs and the need for special operator training
  • A soft cutting action to create a plateau finish through a low-temperature abrading process that exposes undisturbed base metal, to help produce a long-wearing surface
  • Grit size ranges from 120 to 320; higher grit numbers are finer, to help create a smooth surface finish
  • Order by actual bore size as the tool is produced oversized
  • Silicon carbide is more aggressive and cuts faster than aluminum oxide

Product Details

  • Shipping Information: View shipping rates and policies
  • Domestic Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B005ANHYF6
  • Average Customer Review: 4.7 out of 5 stars  See all reviews (73 customer reviews)
  • Product Warranty: For warranty information about this product, please click here

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Product Description

Flex-Hone GB-series abrasive bead style brushes for block cylinders have globe-shaped abrasive points on an independent suspension for self-centering, self-aligning to the bore, and self-compensating for wear. This reduces set-up time and costs and the need for special operator training, as well as ensuring precise control of finish parameters. The resilient, flexible honing tool has a soft cutting action to create a plateau finish, where surface irregularities are reduced, while retaining a cross-hatch suitable for oil retention; the plateau finish increases the bearing area of the surface. Order by actual bore size as the tool is produced oversized.

Using the Flex-Hone low-temperature abrading process exposes undisturbed base metal, to help produce a long-wearing surface by removing cut, torn, and folded metal. The final surface of the metal part is optically smooth and has significantly reduced fragmented, amorphous, or smeared metal from previous operations. Cylinder hones are suitable for use deglazing, surface finishing, and deburring on cylinders, as well as cross hole deburring, port radiusing, and edge blending on items such as firearm chambers, musical instruments, combustion chambers, air compressors, pumps, valve bodies, valve guides, and brake cylinders. Use by hand or in NC/CNC equipment. NC-style tools can be used on both the older Numerical Control (NC) machines, which are programmed using physical media such as magnetic tape, and the newer CNC (Computer Numerical Control) machines, which are programmed using computers.

Abrasives are used for a variety of applications from shaping a part to fine finishing, depending on the grit size. Low grit numbers like 40 are coarse and are used for removing excess material and shaping a part. High grit numbers like 400 are fine and help to create a smooth surface finish. Silicon carbide is a sharp, aggressive grain that offers high penetration, fast cutting, and high material removal even under light pressure. It is commonly used with softer materials like brass, plastics, and rubber, and abrasive materials like glass and enamel, but can wear out faster than aluminum oxide when used on wood.

Brush Research Manufacturing Co., headquartered in Los Angeles, manufactures tools in the United States, and has been in operation since 1958. The company specializes in ball hone abrasives and industrial brushes for honing, a type of precision surface finishing. Brush Research meets ISO 9000 certification for quality.


Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

6 of 6 people found the following review helpful By manddallen on August 23, 2011
Shank Diameter: 0.310Part Number: GB31224Max Rotational Speed: 700Size: 3-1/2"Fits Hole Size: 3.5Grit Type: 240Overall Length: 13.5 Verified Purchase
The hone was well packaged and arrived in good order. We put it to use right away. We are working on an 1976 Fiat 124 Spyder thats been parked since 1996. Rings rusted onto cynilder walls. This hone alowed us to clean up the rusted areas in just a few minutes. We now need to assess wheather to re- ring and reassemble or to bore.
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6 of 6 people found the following review helpful By N. Chin on July 11, 2010
Shank Diameter: 0.310Part Number: GB31224Max Rotational Speed: 700Size: 3-1/2"Fits Hole Size: 3.5Grit Type: 240Overall Length: 13.5 Verified Purchase
This is a great ball hone for my Evo engine rebuild. All that was needed was some hone oil and this thing. Made terrific cross hatch pattern. Highly recommended!
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4 of 4 people found the following review helpful By S. Ziemba on February 22, 2013
Shank Diameter: 0.310Part Number: GB31424Max Rotational Speed: 700Size: 3-1/4"Fits Hole Size: 3.25Grit Type: 240Overall Length: 13.5 Verified Purchase
I bought this for my 1997 SeaDoo Speedster engine repair. I originally honed it with this but then found out I needed to get the cylinder bored over for other reasons. I took it into the machine shop and the machinist was in awe how amazing the cylinder looked he was wondering why I was even there. The cross hatch this tool leaves is second to none. This is a must have for anyone who regularly works on engines, but keep in mind these are fitted for specific size bores. If you just need one for a different size bore every time on new engines you work on, it might not be cost effective for you. For me, I would rather accumulate a whole set...so its all good for me.
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4 of 4 people found the following review helpful By spyderrider on July 28, 2013
Shank Diameter: 0.310Part Number: GB31218Max Rotational Speed: 700Size: 3-1/2"Fits Hole Size: 3.5Grit Type: 180Overall Length: 13.5 Verified Purchase
don't have a lot of experience with honing, so nothing really to compare it to. there is a technique to get the right cross hatch pattern. just used it to clean up the cylinder wall when installing new rings. have to move it quickly depending on the drill speed, but it left a really nice pattern and cleaned it up really nice. its quite aggresive so it only takes a few seconds. be careful
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4 of 4 people found the following review helpful By KevinK on September 3, 2012
Shank Diameter: 0.310Part Number: GB31224Max Rotational Speed: 700Size: 3-1/2"Fits Hole Size: 3.5Grit Type: 240Overall Length: 13.5 Verified Purchase
I was in a hurry to rebuild my Honda K24 bottom end so i ordered the Flex-Hone to get the cylinder bores ready. It arrived extremely fast and the end product looked better than what i have received from most machine shops. It's also a lot easier to use than the 3 stone honing tools and delivers a better finish on the bore.
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4 of 4 people found the following review helpful By Gregory Miller on May 12, 2010
Shank Diameter: 0.310Part Number: GB31224Max Rotational Speed: 700Size: 3-1/2"Fits Hole Size: 3.5Grit Type: 240Overall Length: 13.5 Verified Purchase
Brush Research Flex-Hone: if you have not used one of these before you may be surprised at how well they work, just as advertised! They last a long time, and leave the proper finish to break in new rings in about a minute. What more do you want?
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3 of 3 people found the following review helpful By Mike on September 3, 2011
Shank Diameter: 0.310Part Number: GB31224Max Rotational Speed: 700Size: 3-1/2"Fits Hole Size: 3.5Grit Type: 240Overall Length: 13.5 Verified Purchase
Worked exactly as described, quick and clean. Only con: must buy one for each size cylinder you are doing (this was a 3 1/2").
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2 of 2 people found the following review helpful By Ralph Andersen on December 11, 2011
Shank Diameter: 0.310Part Number: GB33424Max Rotational Speed: 700Size: 3-3/4"Fits Hole Size: 3.75Grit Type: 240Overall Length: 13.5 Verified Purchase
I've been using flex-hones on my engine builds for several decades and they always give me the finish I want. They are inexpensive so it's not a big deal that I need 4-5 to ocver all the different sizes I need. A great product!
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