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Help CenterCarbon Steel Round Rod for Gear Shaft Manufacturing AISI 1045 Turned Tolerance IT7
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Hemaokang Steel (Shandong) Co., Ltd. is proud to supply high-quality AISI 1045 carbon steel round rods that are precision-turned to IT7 tolerance for gear shaft manufacturing. These rods combine reliable tensile strength with excellent machinability, making them a preferred choice for components that demand dimensional accuracy and surface integrity. As an ISO9001-certified manufacturer, we ensure every rod is thoroughly inspected before shipment, so you can integrate them directly into your production line with confidence.
Product Overview
The AISI 1045 round rod is a medium-carbon steel bar with a nominal carbon content of 0.42%–0.50%. It is supplied in a turned condition, which means the outer surface is machined to a smooth finish with tight diameter control. The IT7 tolerance guarantees a dimensional precision that suits high-volume manufacturing of gear shafts, pinions, and other transmission parts. Whether you need standard diameters or custom dimensions, our flexible production process can accommodate your specifications.
Key Features
- High strength and hardness: AISI 1045 offers a good balance of strength, toughness, and wear resistance, suitable for parts that bear heavy loads.
- Precision IT7 tolerance: Achieves close dimensional control, reducing the need for additional machining and lowering overall material waste.
- Turned surface finish: Provides a clean, scale-free outer surface that improves the fatigue life of finished gear shafts.
- Excellent machinability: Optimized for turning, milling, and drilling operations, especially when produced in the turned condition.
- Consistent mechanical properties: Through controlled heat treatment and processing, each batch maintains uniform hardness and tensile strength.
- Customizable sizes: Diameters and lengths can be tailored to your production requirements with minimal lead time.
Technical Specifications
| Material | AISI 1045 carbon steel |
| Diameter range | 20 mm - 200 mm (custom sizes available) |
| Length | 3 m / 6 m standard, or custom cut-to-length |
| Tolerance | IT7 (typically h7 for turned bars) |
| Surface condition | Turned, free of cracks and decarburization |
| Supply form | Straight round bars |
| Applications | Gear shafts, axles, studs, couplings, and general machine parts |
| Packing | Bundled with protective coating or in crates for export |
Typical Chemical Composition (reference only)
| Carbon (C) | 0.42% - 0.50% |
| Manganese (Mn) | 0.60% - 0.90% |
| Phosphorus (P) | ≤ 0.040% |
| Sulfur (S) | ≤ 0.050% |
Benefits for Your Manufacturing Process
Using our AISI 1045 round rods for gear shaft production brings several direct benefits to your operation. First, the IT7 tolerance reduces the stock allowance required for finish grinding or honing, which shortens cycle times and extends tool life. Second, the turned surface eliminates scale and foreign material, allowing immediate inspection and processing. Third, the stable carbon content and uniform microstructure result in predictable heat-treat responses, enabling you to achieve the desired hardness and case depth with greater repeatability. This translates into fewer rejects, lower rework costs, and higher overall throughput for your gear shaft lines.
Quality Assurance and Export Experience
Hemaokang Steel is located in Liaocheng, Shandong, a key steel production hub in China. Since our establishment in 2025, we have focused on building a customer-oriented supply chain that supports both large volume orders and just-in-time deliveries. With an annual export value ranging from US$50 million to US$100 million, our export team has the capacity to handle international documentation, shipping arrangements, and customs clearance with ease. We serve markets across North America, South America, Eastern Europe, Southeast Asia, Africa, Oceania, the Middle East, and Western Europe, ensuring that every container meets local standards and buyer expectations.
Frequently Asked Questions
Q1: What is the minimum order quantity (MOQ) for this round rod?
Our standard MOQ is 1 metric ton for common sizes. For custom diameters or special heat treatments, the MOQ may be adjusted based on production planning. Feel free to contact us for exact parameters.
Q2: Can I order specific lengths or cut pieces?
Yes, we offer custom cut-to-length services. You can request lengths from 500 mm to 6,000 mm, and we will provide precise cutting with minimal burr. Longer bars are also available for certain applications.
Q3: How do you guarantee the IT7 tolerance?
Each batch is processed on precision CNC turning machines and then checked with digital micrometers and laser-based measuring instruments. We maintain in-house inspection records for every heat number and can provide mill test certificates upon request.
Q4: Is the material suitable for induction hardening?
AISI 1045 responds well to induction surface hardening. Its carbon content allows satisfactory hardenability for gear shafts that require a hard outer layer and a tough core. We can supply material with virgin or normalized structure to improve heat treatment consistency.
Q5: What packing options are available for export?
The rods are typically packed in steel bundles with protective caps or wrapped in waterproof paper. For fragile dimensions, wooden crates or pallets can be arranged. All packing is designed to withstand ocean freight and prevent damage during handling.
Q6: What is the typical lead time?
For standard sizes in stock, shipment can occur within 7-10 days. For custom dimensions or treatment requirements, lead time is usually 15-25 days depending on the volume. We prioritize on-time delivery for all international orders.
Q7: Can you supply additional steel grades?
Yes, in addition to AISI 1045, we offer other carbon steel grades such as AISI 1020, 1040, 1050, and alloy steels like 40Cr or 42CrMo. If you have a special requirement, our technical team can recommend the most suitable material.
Q8: Are samples available before placing a bulk order?
Yes, we can provide small samples with a nominal charge that is refundable against a confirmed purchase order. The sample will be prepared with the same processing and inspection standards as our production batch.
Partner with Hemaokang Steel for dependable raw materials that keep your gear shaft manufacturing competitive. Our ISO9001-certified processes, experienced team, and customer-oriented service are ready to support your production goals. Contact our sales office for a quotation or to discuss your technical specifications in detail. We look forward to building a long-term relationship with you.
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