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Help CenterNon-standard Spline Gears Machined From 42CrMo4 Annealed to HB220-250
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Introduction
Henan San Kuang Machinery Technology Co., Ltd. (established 2014) brings over a decade of precision machining experience to every Non-standard Spline Gear we produce. Machined from premium 42CrMo4 steel and annealed to a controlled hardness range of HB220-250, our gears deliver reliable performance in demanding applications. With a factory spanning 10,000–30,000 square meters and a skilled team of 51–100 employees, we ensure every gear meets the exact specifications required for non-standard transmissions, heavy machinery, and custom drive systems. Our commitment to quality is backed by multiple management system certifications including ISO9001, ISO14000, and OHSAS18001, ensuring consistent, traceable production.
These spline gears are designed for buyers who need customized tooth profiles, special dimensions, or non-standard tolerances that standard off-the-shelf products cannot fulfill. Whether you require a single prototype or a batch production run, we offer flexible manufacturing solutions with short lead times.
Product Features & Technical Specifications
- Material Excellence: 42CrMo4 alloy steel provides high strength, good toughness, and excellent wear resistance after proper heat treatment. The annealed condition (HB220-250) ensures optimal machinability while retaining core mechanical properties.
- Precision Machining: CNC hobbing, shaping, and grinding processes are used to achieve tooth profile accuracy up to DIN 5 or AGMA 8 grade. Runout and pitch deviations are tightly controlled.
- Non-standard Customization: We can produce any number of teeth, module, pressure angle, or tooth form (involute, rectangular, serration) according to your drawings or samples. Spline shafts and internal splines are also available.
- Consistent Hardness: Annealing to HB220-250 ensures uniform hardness throughout the gear blank, reducing distortion during subsequent machining and heat treatment if required.
- Surface Finish Options: Standard as-machined finish (Ra 1.6–3.2 μm). Optional phosphate coating, black oxide, or induction hardening for added wear resistance.
| Parameter | Value / Range |
|---|---|
| Material | 42CrMo4 (equivalent to 4140 / AISI 4140) |
| Hardness | HB 220–250 (Annealed) |
| Tooth Profile | Involute, Rectangular, or Custom |
| Module Range | 0.5 – 20 (or non-module pitch) |
| Number of Teeth | Any, according to drawing |
| Diameter Range | 20 mm – 800 mm |
| Surface Finish | Ra 0.8–3.2 μm (customizable) |
| Certifications | ISO9001, ISO14000, OHSAS18001, etc. |
Advantages for Your Business
- Reliable Supply Chain: Our factory is located in Luoyang, Henan, a major industrial base in China, with convenient access to ports (Shanghai, Qingdao, Tianjin, Lianyungang). We export to over 15 regions worldwide including North America, Europe, and Southeast Asia.
- Cost-Effective Customization: Since 2014, we have optimized our production processes for non-standard parts. No minimum order quantity for prototypes; batch pricing is competitive.
- Technical Support: Our engineering team can review your design and suggest improvements for manufacturability, ensuring the gear meets your performance goals without unnecessary cost.
- Quality Assurance: We follow ISO9001 and ISO14000 management systems, with in-house hardness testing, dimensional inspection (CMM), and surface roughness measurement. Traceability is maintained throughout production.
Why Choose Henan San Kuang Machinery?
With an annual export value between US$2.5 Million and US$5 Million, we serve clients in diverse industries including automotive, agricultural machinery, mining, and heavy equipment. Our factory size (10,000–30,000 sqm) and 51–100 skilled workers allow us to handle complex orders efficiently. We hold multiple certifications such as HACCP, TL900, QS9000, SA8000, ISO9001, ISO9004, ISO17799, ISO9000, ISO14000, ISO10441, ISO16949, TS16969, ISO19011:2000, OHSAS18001, and other management system certifications—demonstrating our commitment to quality, safety, and environmental responsibility. When you choose our Non-standard Spline Gears, you are partnering with a manufacturer dedicated to precision, flexibility, and long-term reliability. Contact us today for a quote or engineering consultation.
Frequently Asked Questions (FAQ)
-
What is the minimum order quantity (MOQ) for these non-standard gears?
We accept small orders including single prototypes. MOQ can be 1 piece for test purposes, and we will provide competitive pricing for larger volumes. -
Can you make spline gears with special tooth forms like rectangular or serration?
Yes, we can machine any tooth profile you specify, including rectangular, involute, serration, or other custom forms. Just provide a drawing or sample. -
Do you offer heat treatment after machining?
By default these gears are supplied in the annealed condition (HB220-250). If you require hardening, we can arrange induction hardening or case carburizing as an optional service. -
How do you ensure the dimensional accuracy of non-standard splines?
We use CNC hobbing, shaping, and gear grinding machines. Final inspection is performed with coordinate measuring machines (CMM) and dedicated gear testers to verify tooth profile, pitch, and runout. -
What are the available packaging options for export?
Gears are individually wrapped with anti-rust paper, then packed in wooden cases or pallets suitable for sea or air freight. Custom packaging according to your requirements is available. -
Can you supply internal spline gears (spline hubs) as well?
Yes, we produce both external splines (shafts) and internal splines (hubs) in non-standard configurations. Please provide your internal spline specifications. -
What is the typical lead time for a custom order?
Lead time depends on complexity and quantity. For a simple non-standard spline gear (e.g., 10–100 pieces), typical lead time is 20–30 working days after drawing approval. Rush orders can be negotiated. -
Do you accept payment by letter of credit (L/C) or T/T?
Yes, we accept T/T, L/C at sight, and other mutually agreed payment terms. We have experience with international trade and can assist with your preferred method.
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