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Centerless Grinding Bearing Roller
Centerless Grinding - Bearing Roller
Centerless Grinding - Bearing Roller
Centerless Grinding - Bearing Roller
Centerless Grinding - Bearing Roller

Centerless Grinding – Bearing Roller

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Centerless Grinding Wheels for Precision Bearing Roller Manufacturing — CUMI’s centerless grinding wheels for bearing rollers are designed to handle taper roller, cylindrical roller, and needle roller grinding operations where outer-diameter accuracy, surface finish, and high-volume throughput are critical. Manufactured using grain types and bond systems matched to each roller category, these wheels deliver consistent sizing and finish across rough, finish, and fine-finish operations. CUMI’s centerless grinding wheels for bearing rollers are used across taper roller, cylindrical roller, and needle roller production lines, making them a dependable solution for precision, high-volume bearing manufacturing.
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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
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
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.

Roller Types Explained:

  • Taper roller: Available in rough, finish, and fine-finish operations at 35 and 50 mps speeds.
  • Cylindrical roller: Standard centerless grinding for constant-diameter rollers.
  • Needle roller: Precision grinding for small-diameter, high-volume bearing components.

Pricing & Enquiry: For the current price of this product, please contact CUMI directly or reach out to your nearest authorised dealer, as pricing depends on order quantity, dealer location, and applicable taxes. To get a quote or enquire about bulk pricing, visit the Contact Us page on cumiabrasive.in or connect with a CUMI distributor in your region.

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.
06.
What is centerless grinding used for in bearing manufacturing? It brings taper, cylindrical, and needle rollers to precise outer-diameter and surface-finish specifications at high volume, without the need to mount each roller between centers.
07.
Can this wheel range grind taper rollers as well as cylindrical rollers? Yes — the product range covers rough, finish, and fine-finish operations for taper roller, cylindrical roller, and needle roller grinding, each with matched bond and grit selections.
08.
Does CUMI offer fine-finish grinding wheels for taper rollers? Yes, per the product range table, fine-finish taper roller options are available at 35 and 50 mps speeds.
09.
What bond systems are used for bearing roller centerless grinding? Vitrified, resin, and rubber bond systems, selected according to roller type, speed, and required finish.
10.
Are custom wheel specifications available for specific bearing production lines? Yes — CUMI provides customized solutions matched to each application's specific requirement.
11.
What is the difference between through-feed, in-feed, and end-feed centerless grinding for bearing rollers? Through-feed grinding passes cylindrical rollers continuously between the wheels for constant-diameter, high-volume output; in-feed grinding holds a roller in a fixed position while the wheel advances, suited to shouldered or stepped profiles; end-feed grinding is used for tapered roller ends fed in from one side.
12.
From where can I buy CUMI's centerless grinding wheels for bearing rollers? Contact CUMI directly or reach out to your nearest authorized dealer

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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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Address

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