Overview
Rings and gears, forged to finish
Vikrant Forge Pvt. Ltd. (est. 1985) makes forged and machined rings and gear parts at its integrated plant near Kolkata, India: rings and planet gears for off-highway haulers, internal ring gears, gear discs, pinions, couplings, locking nuts for cone crushers and bushings for pulleys. Each part is forged, heat-treated and finish-machined under one group.
Specifications
What we can make
| Parameter | Metric | Imperial |
|---|---|---|
| Diameter | 250 – 1,400 mm | 9″ – 55″ |
| Thickness | 85 – 450 mm | 3.5″ – 18″ |
| Finished weight | 50 – 2,500 kg | 100 – 6,000 lb |
| Tolerance | Grade-7 | |
| Surface finish | 1.6 µm | |
| Geometrical accuracy | 20 – 40 µm | |
| Machining | Turning, boring, drilling | |
| Steel grades | SA-105 · 18CrNiMo · EN24 (817M40) · 42CrMo4 / AISI 4140 · S355J2 · AISI 1035 / 1040 | |
| 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 circular products. Send your drawing for a size outside them.
Part types
Rings and gears we supply
RingOff-highway hauler
Planet gearOff-highway hauler
Internal ring gearPower transmission
Ring gear with bolt holesPower transmission
Locking nutCone crusher
BushingPulleys
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
- Off-highway haulers
- Mining
- Cone crushers
- Mechanical power transmission
- Material handling
FAQ
Buyers ask
What size rings can Vikrant Forge make?
Rings and circular parts from Ø250 mm to Ø1,400 mm, 85 to 450 mm thick, weighing 50 to 2,500 kg finished, machined to Grade-7 with a 1.6 µm surface finish.
Which steel grades do you use for rings and gears?
Most often SA-105, 18CrNiMo, EN24 (817M40), 42CrMo4 / AISI 4140, S355J2 and AISI 1035 / 1040.
Which gear parts do you supply?
Ring gears, planet gears, pinions, gear discs and couplings, forged and machined, plus rings and planet gears for off-highway haulers.
Do you export?
Yes. Exports are half of our revenue, to OEMs in more than 15 countries. Vikrant Forge is a government-recognised Two Star Export House.
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 rings or gears?
Send your drawing and quantity. The form opens with "Request a quote" selected and goes straight to our sales team.
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