Name: Ball Lapping Wheels
Brand: CUMI Abrasives
Author: CUMI Abrasive Team

Ball Lapping Wheels

Good

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.

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
CUMI Code	Grit Range	(mm)	(inch)	(mm)	(inch)	Hardness	Structure
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+	4

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