- Quality inspected
- Pan-India delivery
- Custom sizes
Induction Hardened Shaft – Manufacturer & Supplier in Pune, India
Kamal Hydrotech manufactures precision induction hardened shafts from EN8/CK45 steel with surface hardness of 58–62 HRC and surface finish Ra 0.2μm. The induction hardening process selectively hardens only the outer surface to a depth of 1.5–3mm while keeping the core tough and ductile — delivering superior wear resistance without compromising machinability.
Our induction hardened shafts are precision-ground and polished to tight tolerances (f7/f8), making them a direct-fit replacement for standard hard chrome plated rods in applications demanding higher impact resistance. Available in diameters 20mm–200mm and lengths up to 6000mm. Custom sizes to drawing are accepted.
Key Features
- Surface hardness: 58–62 HRC (induction hardened)
- Base material: EN8 / CK45 / EN31 / EN19 steel
- Surface finish: Ra 0.2 μm (max) — precision ground & polished
- Case depth: 1.5 mm to 3 mm
- Diameter range: 20 mm to 200 mm (custom above 200mm)
- Length: up to 6000 mm | cut-to-length available
- OD tolerance: f7 / f8 / g6 as per requirement
- Straightness: 0.1 mm per metre max
Technical Specification of Induction Hardened Shaft
Sizes, grades and lengths can be customised to your drawing. Share your requirement for pricing and lead time.
| Material Grade | EN8 / CK45 / EN19 / EN31 (as per requirement) |
|---|---|
| Surface Hardness | 58 – 62 HRC |
| Case Depth (Hardened Layer) | 1.5 mm to 3 mm |
| Core Hardness | 28 – 35 HRC |
| Surface Roughness (Ra) | 0.2 μm (Max) – precision ground & polished |
| Diameter Range | 20 mm to 200 mm (custom above 200 mm on request) |
| OD Tolerance | f7 / f8 / g6 (as per customer requirement) |
| Straightness | 0.1 mm per metre (max) |
| Single Piece Length | 3 metre / 6 metre / Custom cut-to-length up to 6000 mm |
| Shape | Round (solid bar) |
| Packaging Type | 3-layer protective packaging |
| Minimum Order Quantity | 1 Metre |
| Brand | Kamal Hydrotech |
| Usage / Application | Hydraulic Cylinders, Pneumatic Cylinders, Linear Motion Systems, Machine Tool Guides, Agricultural & Construction Machinery |
Applications of Induction Hardened Shaft
- Hydraulic Cylinders – piston rods requiring high wear resistance under pressure
- Pneumatic Cylinders – lightweight, hardened shafts for smooth pneumatic actuation
- Linear Motion Guide Shafts – precision shafts for LM bearings and slide units
- Plastic Injection Moulding Machines – tie rods and ejector pins
- Machine Tool Guideways – spindle and feed axis shafts
- Agricultural Equipment – heavy-duty cylinder rods for tractors and combines
- Construction Machinery – crane, excavator and loader cylinder rods
Cities We Deliver To
19 locations across India
- Bangalore
- Chennai
- Bengaluru
- Mumbai
- Navi Mumbai
- Hyderabad
- Satara
- Kolhapur
- Ahmednagar
- Aurangabad
- Nagpur
- Goa
- Hosur
- Pune Major Industrial Areas
- Bhosari MIDC
- Chakan
- Pimpri Chinchwad (PCMC)
- Ranjangaon
- Nasik
Frequently Asked Questions
Common questions about our induction hardened shafts.
What is an induction hardened shaft?
An induction hardened shaft is a steel shaft whose surface layer is hardened using induction heating, achieving 58–62 HRC surface hardness. The core remains tough while the surface becomes highly wear-resistant, making it ideal for hydraulic cylinders, linear motion guides, and heavy industrial machinery.
What material is used for induction hardened shafts?
Kamal Hydrotech uses EN8 / CK45 steel (most common for hydraulic rods), EN31 for high-load applications, and EN19 for demanding environments. All grades conform to IS and DIN standards and are sourced from certified steel mills.
What is the hardness of an induction hardened shaft?
Surface hardness is 58–62 HRC with a case depth of 1.5–3 mm. Core hardness remains at 28–35 HRC — giving the ideal balance of wear-resistant surface and tough, impact-absorbing core.
What are the main applications of induction hardened shafts?
Induction hardened shafts are used in hydraulic cylinders, pneumatic cylinders, linear motion bearing systems, machine tool guides, agricultural equipment, construction machinery, plastic injection moulding machines, and industrial tie rods — wherever a combination of hard surface and tough core is essential.
What is the difference between an induction hardened shaft and a chrome plated rod?
An induction hardened shaft achieves 58–62 HRC through heat treatment of the base steel with 1.5–3 mm deep hardness and better impact resistance. A hard chrome plated rod has a thin 15–25 micron chrome layer over softer steel giving a smoother Ra 0.2μm finish but less impact resistance. Choose induction hardened for impact-heavy applications; chrome plated for smooth, corrosion-resistant surface.