Centerless Grinding - Valve Stem

Centerless Grinding – Valve Stem

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An application which 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.

Information Material:

Product Catalogue

Type	Operation	Speed	Best	Better	Good
Mono Valve (Inlet Valve)	Rough	35	9A463 M3 V887	A463 P5 V2020	A463 M3 V2018
	Rough	50	9A463 M3 V887/50	A463 P5 V2020/50	A463 M3 V2018/50
	Semi Finish	35	9A60 L5 V887	DA60 V2016	A60 L5 V2016
	Semi Finish	50	9A60 L5 V887/50	DA60 V2016/50	A60 L5 V2016/50
	Finish	35	9A100 S5 V887	DA100 J5 V2016	A100 J5 V10C
	Finish	50	9A100 S5 V887/50	DA100 J5 V2016/50	A100 J5 V10C/50
Bi – Metal (Exhaust Valve)	Rough	35	9A463 M3 V887	-	-
	Rough	50	9A463 M3 V887/50	-	-
	Semi Finish	35	9A60 L5 V887	-	-
	Semi Finish	50	9A60 L5 V887/50	-	-
	Finish	35	9A100 J5 V887	-	-
	Finish	50	9A100 J5 V887/50	-	-

CUMI Code	Grit Range	Diameter		Thickness		Hardness	Structure	Speed
CUMI Code	Grit Range	(mm)	(Inch)	(mm)	(Inch)	Hardness	Structure	(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

Additional Details

Product Information

Features

- Unique set of combination wheels

- Unique grain combination

- Cork bond

- Wide range of bond system

Benefits

- Good surface roughness and higher productivity

- Superior surface roughness & luster

- customize individual grinding needs

Advantages

- High stock removal

- Lower dressing frequency

- Burn free component

- Better productivity

- Excellent surface finish

Product Uses

Industries

Auto/Auto Ancillary

Applications

Centreless