Overview
Shafts for the heaviest duty
Vikrant Forge Pvt. Ltd. (est. 1985) makes forged and machined shafts at its integrated plant near Kolkata, India, for mining, aggregates, rail and material-handling OEMs. Each one is forged from steel melted at our sister mill, heat-treated in-house and finish-machined to Grade-6 tolerances with 10–20 µm geometrical accuracy.
Specifications
What we can make
| Parameter | Metric | Imperial |
|---|---|---|
| Diameter | 125 – 450 mm | 5″ – 18″ |
| Length | 700 – 6,000 mm | 2.4 – 19.5 ft |
| Finished weight | 50 – 5,500 kg | 100 – 12,000 lb |
| Tolerance | Grade-6 | |
| Surface finish | 0.8 µm | |
| Geometrical accuracy | 10 – 20 µm | |
| Machining | Turning, boring, drilling, milling | |
| Steel grades | 42CrMo4 / AISI 4140 · EN24 (817M40) · C45 / SAE 1045 · 45C8 · 55C8 · EN9, or the grade on your drawing | |
| Heat treatment | In-house, since 1997 | |
| Inspection | In-house CMM · NABL-accredited testing & calibration lab | |
| Certifications | ISO 9001:2015 · ISO 14001:2015 · ISO 45001:2018 | |
Ranges are our finish-machining capacity for long products. Send your drawing for a size outside them.
Shaft types
Shafts we supply
Eccentric shaftJaw crusher, aggregates
Main shaft (threaded)Cone crusher, mining
Taper shaftCone crusher, mining
Threaded shaftGyratory crusher, mining
SpindleArticulated truck, mining
Arbre shaftTraction motor
Arbre shaftRailways
Idler shaftConveyors
How we make them
From melt to dispatch
- 01
Electric arc furnaceSister mill
Eccentric bottom tapping gives cleaner steel with less slag from the first melt.
- 02
Ladle refining
Chemistry and temperature are controlled before casting.
- 03
Vacuum degassing
The melt is held under 1 Torr vacuum to remove dissolved gases.
- 04
Bottom-poured ingots
An ingot casting car pours with little turbulence for clean steel.
- 05
Forging
Manipulator-handled billets are shaped into open-die forgings.
- 06
Heat treatment
Controlled furnace cycles set the grain structure and mechanical properties.
- 07
Finish machining
CNC machining to the drawing's final dimensions.
- 08
Quality assurance
Inspection at every stage, with CMM and our NABL-accredited lab.
- 09
Dispatch
Packed and shipped to customers in India and abroad.
Quality & testing
Checked in-house
- ISO 9001:2015
- ISO 14001:2015
- ISO 45001:2018
- NABL-accredited lab
- Two Star Export House
- EEPC India
Measurement
- In-house coordinate measuring machine (CMM)
- NABL-accredited testing & calibration laboratory
Test equipment from
- Thermo Fisher Scientific · LECO
- GE Inspection Technologies · Olympus · Krautkramer
- Oxford Instruments · Raytek (Fluke) · Nucleonix
Industries
Where our parts work
- Mining
- Aggregates & crushing
- Railways
- Conveyors & material handling
- Steel plants
FAQ
Buyers ask
What size shafts can Vikrant Forge make?
Shafts from Ø125 mm to Ø450 mm and 700 mm to 6,000 mm long, weighing 50 to 5,500 kg finished, machined to Grade-6 with a 0.8 µm surface finish and 10–20 µm geometrical accuracy.
Which steel grades do you use for shafts?
Most often 42CrMo4 / AISI 4140, EN24 (817M40), C45 / SAE 1045, 45C8, 55C8 and EN9. We also work to the grade given on your drawing.
Do you make crusher shafts?
Yes: eccentric shafts for jaw crushers, threaded main shafts and taper shafts for cone crushers, and threaded shafts for gyratory crushers.
Do you supply shafts for railways?
Yes. We make arbre shafts for railways and for traction motors.
What should I send for a quote?
Your drawing (PDF, DWG, DXF, STEP, JPG or PNG, up to 8 MB), the quantity and the steel grade. The quote form goes straight to our sales team at [email protected].
Need forged shafts?
Send your drawing and quantity. The form opens with "Request a quote" selected and goes straight to our sales team.
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