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Centerless Grinding Wheels

Centerless Grinding for Drills & Taps – Precision Solutions from Leading Grinding Drills Manufacturer

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A centerless grinding wheel that presents the most daunting challenges to any abrasive manufac­turer. The range of requirements and priorities of this application varies from product to product, which calls for an equally wide range of offerings to suit the same. Since in most of the centerless applications, more than one wheel is mounted on the spindle, extremely tight tolerances need to be maintained in the geometry and densities of the wheels to ensure uniform wear patterns even if each wheel in the set is different. CUMI has the expertise when it comes to centerless applications thanks to the advanced manufacturing process, premium abrasive grains, and specially designed vitrified, resin, and rubber bond systems to suit the application needs. Customized solu­tions are provided for every application and specific requirement. Be it through-feed, end-feed, or in-feed, CUMI wheels ensure that components are finished to stringent quality requirements.
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Brand: CUMI

Information Material:

Product Catalogue
Type Operation Speed Good Better Best
Drills & Taps Rough 35 A463 L5 V10C A463 L5 V446C 5SBA463 M5 V10C
50 A463 L5 V50C A463 L5 V446C/50 5SBA463 M5 V50C
Semi Finish 35 A60 L5 V10C A60 L5 V446C DA60 M5 V10C
50 A60 L5 V50C A60 L5 V446C/50 DA60 M5 V50C
Finish 35 A80 K5 V10C A80 K5 V446C DA80 K5 V10C
50 A80 K5 V50C A80 K5 V446C/50 DA80 K5 V50C
CUMI Code Grit Range Diameter Thickness Hardness Structure Speed
(mm) (Inch) (mm) (Inch) (mps)
CUMISA 46 - 120 350 - 610 14 - 24 100 - 250 4 - 10 I - N 6 & 8 35, 50 & 63
50A / 50MA 46 - 120 I - N 7 35 & 50
65A 80 - 220 L - 40
SA 46 - 120 I - N 5 - 7 35 & 50
9A 46 - 120 I - P 5 - 7 35 & 50
SBA 46 - 120 I - P 5 - 7 35 & 50
AA 46 - 120 I - P 5 - 7 35 & 50
DA 46 - 120 100 - 300 4 - 12 I - P 5 - 7 35 & 50
A 46 - 120 I - P 5 - 7 35 & 50
C 46 - 120 I - N 5 - 7 35 & 50
GC 46 - 120 I - N 5 - 7 35 & 50

Product Uses

Industries
Cutting Tool
Applications
Centreless
Product Description

Performance & Application Highlights

Consistent high-precision grinding for drills & taps – Suits high-speed, high-volume production environments – Abrasive grade options for roughing, semi-finish, and finishing— Customized for industry-leading results as per your needs.

Key Advantages:

✓ High throughput for drill/tap grinding

✓ Uniform wear, fewer changeovers

✓ Superior surface finish and dimensional control

FAQs
01.
What types of drills and taps benefit from centerless grinding? All sizes, from small to large batch production.
02.
Are these wheels compatible with my existing machines? Designed for popular centerless machines and custom setups—contact us with your requirements.
03.
Which grade fits my material/hardness? Use the Grade Selection table above or contact CUMI’s application experts for free advice.

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CUMI, a part of the 124-year-old Murugappa Group, began as an abrasives company in 1954.

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Important Links

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Phone Number

1800 3000 1131

Email Address

email@cumi.murugappa.com

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