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Crankshaft Grinding Wheels
Crankshaft Grinding Wheels - Auto Components
Crankshaft Grinding Wheels - Auto Components

Crankshaft Grinding Wheels – Auto Components

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What sets crankshaft grinding apart from the other cylindrical grinding processes is the extremely crucial function of the crankshaft itself. Crankshaft design requires meticulous attention from material selection to the various hardening processes. Each part of the crankshaft is designed to have different hardness, meeting specific demands of the application. Grinding of the shoulder region is a surface grinding operation, while the grinding of the pin is a cylindrical grinding operation. This poses a great challenge in designing a wheel that performs both these processes efficiently. With the incorporation of the latest advances in abrasive grains and vitrified bond technology, CUMI provides crankshaft grinding wheels that can face each of these challenges. The basic composition of the wheels is designed to give maximum life and excellent form holding, while physical forms like slotted wheels, sandwich wheels, dual-grade wheels, etc., enable the wheels to grind without burns.
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Brand: CUMI

Information Material:

Product Catalogue
Type Operation Speed Good Better Best
Forged Steel Soft 35 A463 L5 V10X AA463 K5 V2020 12A54/60 J7 V2020
50 A463 K5 V50X AA463 K5 V2020/50 12A54/60 I7 V2020/50
60 A463 K5 V2020/60 12A467 I7 V2020/60 11RA54/60 J7 V2020/60
Hard - PV 35 A601 K5 V10X SA601 K5 V2020 12A601 K5 V2020
50 DA601 K5 V2020/50 AA601 K5 V2020/50 12A601 K5 V2020/50
60 SA601 K5 V2020/60 12A601 K5 V2020/60 11RA54/60 J7 V2020/60
Hard - CV 35 A463 L5 V10X AA463 K5 V2020 12A467 J7 V2020
50 A463 K5 V50X AA463 K5 V2020/50 12A467 I7 V2020/50
60 AA463 K5 V2020/60 12A467 I7 V2020/60 11RA54/60 J7 V2020/60
For Soft shoulder & Hard Center Grinding 60 DA543 K5 V500/60 (sides) 5SA543 K5 V500/60 2CUMISA542 J+6 V500/60 (sides) /
AA602 J6 V500/60(Center)
5SA601 K5 V500/60
Cast Iron upto 50 DA46 K5 V50 SA46 K5 V2018/50 AA46 K5 V2020/50
Nodular Iron upto 50 AA46 L5 V2020/50 5SA46 L5 V2020/50 1CUMISA461 K6 V2020/50
CUMI Code Grit Diameter Thickness Speed Hardness Structure
(mm) (inch) (mm) (inch) (mps)
11RA/51RA 46 - 100 600 - 1200 24 - 48 19 - 125 3/4 - 5 upto 60 J - M 5 - 8
12A
AA
DA
A

Product Information

Features
- Sharp & friable Aluminium oxide grains
- Low temperature fired fusible vitrified bond system
- Uniform density and hardness across wheel diameter
- Sandwich option
Benefits
- Perfectly balanced
- higher feed rates & improved form holding
- Lower BV ( Barkhausenvalue )
Advantages
- Lower dressing depth
- No surface cracks
- Lower cost per component
- Good form retention ( for better radius profile )

Product Uses

Industries
Auto/Auto Ancillary
Applications
Cylindrical
Product Description

Crankshaft grinding wheel for auto components

Crankshaft grinding is one of the most critical engine component machining stages—requiring flawless form accuracy, burn-free surfaces, and durability that withstands engine load cycles. CUMI Crankshaft Grinding Wheels are engineered to handle dual-process grinding—surface grinding for shoulders and cylindrical grinding for pins—ensuring uniform results across varied hardness zones of the crankshaft.

FAB – Features → Advantage → Benefit

  • Advanced abrasive grains → aggressive cutting action → reduces heat buildup & prevents burns on hardened shoulders
  • Vitrified bond technology → strong bond retention → maintains wheel form for long production batches
  • Dual-grade/slotted/sandwich wheel formats → adaptable configuration → ideal for both surface and cylindrical grinding in one setup
  • High form stability composition → minimal wheel wear → ensures taper-free pin grinding and maintains engine performance tolerances
  • Custom hardness & structure options → OEM-grade precision → improved cost per component & lower rejection in engine lines

Industry: Auto / Auto-Ancillary – Engine component machining (crankshafts)

FAQs
01.
Which industry uses crankshaft grinding wheels? Primarily the Auto / Auto-Ancillary sector — engine crankshaft & powertrain machining plants.
02.
Why are slotted wheels used in crankshaft grinding? Slots allow better coolant penetration and reduce heat, preventing burn marks.
03.
Can a single wheel handle both pin & shoulder grinding? Yes CUMI dual-grade wheels support both processes.
04.
Does vitrified bond improve form retention? Yes — it maintains geometry even under continuous pressure.
05.
Can CUMI customize wheels for hardness variation across crankshafts? Yes — bond and grit can be matched to heat-treated zones.

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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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