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Centerless Grinding - Bearing Roller

Centerless Grinding – Bearing Roller

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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.
Type Operation Speed Good Better Best
Outer Diameter - Taper Roller Rough 35 A80 L RT1 A80 L RT3 65A801 L RT1
50 - A80 L RT45 65A801 L RT45
35 - A80 MRT3 -
50 - 5SBA60 K5 V50 For >1.5” roller
Finish 35 A100 M RT1;
A120 L RT1 		A120 M RT1 65A100 M RT1
50 - 5SA80 K5 V50
DA80 J5 V2020/50 		For >1.5" roller
Fine Finish 35 - - DA400 H7 RBCX
50 - - DA500 H7 RBCX
Outer Diameter - Cylindrical Rollers Rough 35 AA60 K5 V8 53A60 J7 VC500 1CUMISA60 J6 VCAE
50 AA60 K5 V50 53A60 J7 VC500/50 1CUMISA60 J6 VC500/50
Finish 35 AA80 K5 V8 53A80 J7 VC500 1CUMISA80 J6 VCAE
50 AA80 K5 V50 53A80 J7 VC500/50 1CUMISA80 J6 VC500/50
Needle Roller Rough 35 - - GC120 M5 VG
50 - - GC120 M5 VG/50
Finish 35 A120 L RT1 A120 M RT1 GC1201 N5 VS2110M/50
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
Bearing
Applications
Centreless

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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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Phone Number

1800 3000 1131

Email Address

email@cumi.murugappa.com

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