Cup Wheel Grinding for Metal Applications

Name: Cup Wheel Grinding for Metal Applications
Brand: CUMI Abrasives
SKU: CWG-METAL-001
Author: CUMI Abrasive Team

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CUMI’s Cup Wheel Grinding Metal Applications are designed for grinding of stone and welded joints of metal by means of portable grinders. Available in both straight and tapered shapes, CUMI’s cup wheels are available in a wide range of grit sizes from Grit 16 to Grit 220 to meet all grinding/finishing needs.

Brand: CUMI

Information Material:

Product Catalogue

Variant	Type	Speed	For Better Life	For Better MRR
Portable	Carbon Steel & Low Alloy Steel	50	A163 R3 TDR1215	A163 R5 BM4
	High Alloy Steel & Stainless Steel		A163 R2 BM4	A163 Q5 BM4
	Hi-Chrome Steel		AZA163 TDR1175	AZA143 TDR1214
	Grey Cast Iron & SG Iron		C163 Q3 B1551	CA163 TDR1219

CUMI Code	Grit Range	Diameter		Thickness		Speed	Hardness	Structure
		(mm)	(inch)	(mm)	(inch)	(mps)
AZA	12 - 24	100 - 200	4 - 8	50 - 100	2 - 4	50	M - R	2 - 9
CA	14 - 24
C
A

Product Uses

Industries

Metal

Steel

Product Description

Cup Wheel Grinding Metal

The CUMI Cup Wheel for Metal is engineered for portable grinder-based operations, ideal for grinding weld seams, leveling metal surfaces, smoothing structural steel edges, and refurbishing fabricated parts. Available in straight and tapered formats across a grit range of 16 to 220, it supports every stage of work — from bulk weld removal to fine surface preparation before coating, painting, or fabrication assembly.

Features, Advantages & Benefits

Multiple grit range (16–220) → Supports heavy removal to fine finishing → One wheel for all stages
Straight & tapered shapes → Matching edge geometry → Better access for corners and weld joints
Portable grinder compatibility → No machine dependency → Use directly on-site for repairs
Sharp abrasive bond → Faster material removal → Reduces operator time & energy
Durable wheel life → Less wear during aggressive grinding → Lower replacement cost

FAQs

01.

Where is this cup wheel commonly used? (Industry explicit) Used widely in welding workshops, structural steel fabrication, automotive body shops & equipment repair yards.

02.

Can this cup wheel grind stone as well? Yes — although primarily for welded joints on steel, it also works for stone edge grinding.

03.

Is coolant required while grinding? Dry grinding is common, but coolant can increase wheel life and reduce heat marks.

04.

Which grit should I choose for weld removal? Use 16–24 grit for weld removal, 60–80 grit for smoothing, and 120+ grit for finishing.

05.

Does it work on stainless steel? It can be used, but for SS — zirconia or ceramic wheels offer longer life & cleaner finish