Product description

What sets Crankshaft grinding apart from the other cylindrical grinding process is the extremely crucial function of the crankshaft in 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 are designed to give maximum life and excellent form holding while physical forms like slotted wheels, sandwich wheels, sandwich wheels, dual grade wheels etc. enable the wheels to grind without burns.

Features:

  1. Sharp & friable aluminium oxide grains
  2. Low temperature fried fusible vitrified bond system
  3. Uniform density and hardness across wheel diameter
  4. Perfectly balanced
  5. Sandwich option for higher feed rates & improved form holding

Advantages of CUMI Wheels

  1. Lower BV ( Barkhausen value )
  2. Lower dressing depth
  3. No surface cracks
  4. Lower cost per component
  5. Good form retention ( for better radius profile)
Abrasive UsedCUMI CodeGritDiameter (mm)Diameter (inch)Thickness (mm)Thickness (inch)SpeedHardnessStructure
Pink Aluminium Oxide11RA/51RA46 - 100600 - 120024 - 4819 -1253/4 - 5upto 60J -M5 - 8
Pure Aluminium Oxide12A
White Aluminium OxideAA
Aluminium Oxide BlendDA
Brown Aluminium OxideA
TypeOperationSpeedBest BetterGood
Forged SteelSoft3512A54/60 J7 V2020AA463 K5 V2020A463 L5 V10X
5012A54/60 I7 V2020/50AA463 K5 V2020/50A463 K5 V45X
6011RA54/60 J7 V2020/6012A467 I7 V2020/60AA463 K5 V2020/60
Hard – PV3512A601 K5 V2020SA601 K5 V2020A601 K5 V10X
5012A601 K5 V2020/50AA601 K5 V2020/50DA601 K5 V2020/50
6011RA54/60 J7 V2020/6012A601 K5 V2020/60SA601 K5 V2020/60
Hard - CV3512A467 J7 V2020AA463 K5 V2020A463 L5 V10X
5012A467 I7 V2020/45AA463 K5 V2020/50A463 K5 V45X
6011RA54/60 J7 V2020/6012A467 I7 V2020/60AA463 K5 V2020/60
For Soft shoulder & Hard Center Grinding602CUMISA542 J+6 V500/60 (slides) / AA602 J6 V500/60(Center)5SA543 K5 V500/60DA543 K5 V500/60 (slides)
5SA601 K5 V500/60DA601 K5 V500/60 (center)
Cast Ironupto 50AA46 K5 V2020/50SA46 K5 V2018/50DA46 K5 V50
Nodular Ironupto 501CUMISA461 K6 V2020/505SA46 L5 V2020/50AA46 L5 V2020/50
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