Centerless Grinding – Bearing Roller

Name: Centerless Grinding - Bearing Roller
Brand: CUMI Abrasives
SKU: CGW-BRLR-001
Author: CUMI Abrasive Team

Good

Bearing roller is an application that 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.

Brand: CUMI

Information Material:

Product Catalogue

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
		35		A120 M RT1	65A100 M RT1
		50	-	5SA80 K5 V50 DA80 J5 V2020/50	For >1.5" roller
	Fine Finish	35	-	-	DA400 H7 RBCX
	Fine Finish	50	-	-	DA500 H7 RBCX
Outer Diameter - Cylindrical Rollers	Rough	35	AA60 K5 V8	53A60 J7 VC500	1CUMISA60 J6 VCAE
	Rough	50	AA60 K5 V50	53A60 J7 VC500/50	1CUMISA60 J6 VC500/50
	Finish	35	AA80 K5 V8	53A80 J7 VC500	1CUMISA80 J6 VCAE
	Finish	50	AA80 K5 V50	53A80 J7 VC500/50	1CUMISA80 J6 VC500/50
Needle Roller	Rough	35	-	-	GC120 M5 VG
	Rough	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
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

Product Uses

Industries

Bearing

Applications

Centreless

Product Description

Cylindrical Grinding Wheels for Precision Size Generation & Surface Finish

CUMI Cylindrical Grinding Wheels are designed to handle a wide range of external cylindrical grinding operations where size accuracy, surface finish, and productivity are critical. Manufactured using the optimal selection of abrasive grain types, these wheels deliver high stock removal rates while maintaining excellent form retention throughout the grinding cycle.

CUMI offers customized wheel sketches tailored to specific customer requirements, including wheels for multiple diameters and shoulder grinding with pre-formed wheel faces. A wide range of bond systems—vitrified, resin, and specialized formulations—allows precise matching of the wheel to individual grinding conditions and materials.

As a result, manufacturers achieve the following:

Accurate size generation with consistent dimensional control
Fine surface finish across complex cylindrical components
Faster grinding cycles and higher productivity
Reliable performance across valves, shafts, pins, and automotive components

CUMI cylindrical grinding wheels are widely used for grinding valves, plunger pins, eye bolts, transmission shafts, camshafts, and crankshafts, making them a dependable solution for precision and high-volume production environments.

FAQs

01.

What are cylindrical grinding wheels used for? Cylindrical grinding wheels are used for external grinding operations to achieve precise diameters, fine surface finish, and dimensional accuracy on shafts and round components.

02.

Which components are commonly ground using cylindrical grinding wheels? They are widely used for grinding valves, transmission shafts, camshafts, crankshafts, plunger pins, and eye bolts in automotive and industrial manufacturing.

03.

How does abrasive grain selection affect cylindrical grinding performance? The right abrasive grain enables higher stock removal, better form retention, and improved surface finish, directly impacting productivity and wheel life.

04.

Can cylindrical grinding wheels be customized for specific applications? Yes. CUMI provides custom wheel designs and sketches tailored to component geometry, grinding parameters, and surface finish requirements.

05.

What bond systems are available for cylindrical grinding wheels? CUMI offers a wide range of bond systems, including vitrified and resin bonds, to suit different materials, grinding speeds, and precision requirements.