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Ball Lapping Wheels
Ball Lapping Wheels

Ball Lapping Wheels

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CUMI provides the best ball lapping wheels, customized to meet the exacting demands and ensure that premium quality balls are produced. Be it the high-density vitrified wheels for grinding or the micro-grit resinoid wheels for lapping, CUMI has got it all. The state-of-the-art manufacturing facility ensures that every wheel produced meets stringent quality norms. The demands expected of balls in the bearing industry have become highly stringent in terms of quality . The primary objective of a ball manufacturer is to constantly improve the quality of the balls, in terms of sphericity (roundness) and surface finish, while reducing the overall manufacturing cost.  
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Brand: CUMI

Information Material:

Product Catalogue
Operation Lapping Stage Grit Range Hardness Good Better Best
Lapping 1 G600 & G800 Y, Z & Z+ – WA-BL15
WA-BL393 		WA-BL15
WA-BL393
2 G800 & G1000 Y, Z & Z+
3 G1200 & G1500 Y & Z
CUMI Code Grit Range Diameter Thickness Hardness Structure
(mm) (inch) (mm) (inch)
CA 320 - 1500 400 - 1000 16 - 40 30 -140 1-1/4 to 5-1/2 Y, Z & Z+ 4
AA 320 - 1500 400 - 1000 16 - 40 30 -80 1-1/4 to 3-1/4 Y, Z & Z+

Product Information

Features
- Closely graded aluminium oxide grain
- Unique hot press technology
- Specially controlled process
Benefits
- Superior surface quality
- Ensuring consistency
- Modified resins to achieve high material removal rate
Advantage
- Faster cycle time
- Consistent quality layer to layer
- Longer wheel life
- Superior ball quality
- Overall low abrasive cost per ball

Product Uses

Industries
Bearing
Product Description

Ball lapping is the final precision-finishing stage in bearing ball manufacturing, where ultra-fine polishing and surface-quality enhancement are critical. CUMI Ball Lapping Wheels are engineered to deliver micro-level finishing, improving sphericity, minimizing surface roughness, and supporting mass production with reduced operating costs.

FAB – Feature → Advantage → Benefit

  • Micro-grit bakelite/resinoid wheels → precision polishing → smoother bearing surfaces & enhanced performance
  • State-of-the-art CNC manufacturing → uniform bond & structure → predictable output for millions of balls
  • Custom grit & hardness options → optimized per ball size → lower rejection rate & improved performance consistency
  • Designed for final finishing → reduces need for secondary polishing → faster delivery cycles & lower CPC (cost-per-component)

Industry: Bearing Industry – final surface finishing of bearing balls

FAQs
01.
What stage of bearing ball production uses lapping wheels? What stage of bearing ball production uses lapping wheels?
02.
Do lapping wheels differ from grinding wheels? Yes — grinding shapes the ball; lapping polishes it to micro-roughness levels.
03.
Can the grit be customized? Yes — grit size can be selected based on required finish level.
04.
Are these wheels suitable for ceramic balls? Yes — customized bond types can be supplied upon request.
05.
Do these wheels reduce post-finishing operations? Yes — ultra-fine finishing eliminates secondary polishing.

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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

Contact us

Phone Number

1800 3000 1131

Email Address

email@cumi.murugappa.com

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