Forged Flange Hubs
Forged steel flange hubs with a raised pilot boss, produced closed-die and finish-machined to suit the mating shaft.
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Forging Parts
Forged Sprockets & Gear Rings
Forged steel sprockets and toothed rings, cut and heat-treated for chain drives and indexing systems.
| Forging weight | 0.5 – 25 kg per part, per die set |
|---|---|
| Tolerance | ±1.5 mm as-forged; finished to ±0.05 mm after machining |
| Heat treatment | Quench and temper, normalising or annealing — to specification |
About this part
What it is and why it is made that way
Sprocket teeth and gear teeth are the highest-stress features on a driven machine. Forging puts the metal where the load is, and the teeth are then cut and heat treated after forging so the case can be hardened without the core losing toughness. Tooth form, pitch and profile shift are all cut to the standard or to your drawing.
- Forged blank with the tooth region in the high-density zone
- Tooth profile cut and heat treated after forging
- Hardened or through-hardened to specification
- Bore and pilot finished to the shaft fit
Materials
- C45 / 40Cr carbon steel
- 42CrMo alloy steel
- 20CrMnTi / 20CrMnMo gear steel
- Stainless 304 / 17-4PH
- Alloy steel 40CrNiMoA
Production processes
- Open-die forging
- Closed-die forging
- Hot and cold forging
- Heat treatment
- CNC finish machining
Typical applications
- Chain drives
- Conveyor drives
- Indexing and positioning
- Heavy-duty gear systems
Specification
Technical detail
The ranges below are what this shop typically holds. Anything tighter than the baseline is possible — send the drawing and we will confirm it against your specific tolerances rather than quote from a table.
| Forging weight | 0.5 – 25 kg per part, per die set |
|---|---|
| Tolerance | ±1.5 mm as-forged; finished to ±0.05 mm after machining |
| Heat treatment | Quench and temper, normalising or annealing — to specification |
| Material certification | Mill test certificate available on request |
| Forging ratio | Up to 4:1, per die set |
| Pitch diameter | Ø60 – Ø800 mm |
| Tooth profile | ISO 606 / ANSI B29.1 or customer-specified |
| Hardness | Surface hardened or through-hardened, to specification |
Material and finish are yours to choose. The lists above are the families this part is normally made in. We will not substitute a grade or change a tolerance without telling you first — and asking.
In the same process line
Other Forging parts
If this is not quite your part, these are made on the same equipment with the same inspection.
Forged Ring Flanges
Forged ring flanges with a full-length sealing face, machined flat and parallel for a reliable gasket line.
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Forged Bolt-Circle Flanges
Forged flanges with a dense bolt-hole circle, machined and faced for high-pressure bolted connections.
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Get a quote for this part
Send the drawing and we will quote it against your material, your tolerance and your quantity. One business day, in writing, with a lead time you can plan around.