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SWC120 Forged Welded Yoke – Cross Shaft 45×101mm, 40Cr Quenched & Tempered HB250-300
Model Number
Check below, custom
SWC120
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
SWC120 Forged Welded Yoke – 40Cr Quenched & Tempered, Cross Shaft 45×101mm for SWC Cardan Shafts
Factory Direct | 40Cr Alloy Steel | Forged Construction | Quenched & Tempered HB250-300 | SWC120 Standard | Cross Shaft 45×101mm | L=120mm | Φ71mm | Ample Stock | OEM Customization
The Apexcoupling SWC120 Forged Welded Yoke is a high-strength replacement component designed for SWC series cardan shafts and universal joint drive systems. Manufactured from premium 40Cr alloy steel using a precision forging process, this welded yoke delivers superior strength, durability, and fatigue resistance. The quenched and tempered heat treatment achieves a hardness of HB250-300, providing an optimal balance of strength and toughness for heavy-duty industrial applications.
Precision-machined to SWC120 specifications with a cross shaft bearing hole of 45×101mm, a total length of 120mm, and a diameter of Φ71mm, this welded yoke is a direct fit for SWC120 series universal joints. With ample stock availability and full customization support, the SWC120 welded yoke is the ideal replacement part for mining equipment, metallurgical machinery, rolling mills, conveyors, and heavy industrial drive systems.
✅ Premium 40Cr alloy steel – quenched & tempered HB250-300 for optimal strength and toughness. SWC120 standard dimensions – cross shaft 45×101mm, L=120mm, Φ71mm. Precision forging process – superior grain structure and durability. Precision-machined bearing holes – ensures accurate bearing fit and long service life. Ample stock – ready for immediate shipment. OEM customization – custom sizes, materials, and finishes available.
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | SWC120 Forged Welded Yoke (Fork Head) |
| Model | SWC120 |
| Material | 40Cr alloy steel – high-strength, excellent toughness |
| Construction | Forged welded – precision forging with welding assembly |
| Heat Treatment | Quenched & tempered – HB250-300 hardness |
| Cross Shaft Bearing Hole | 45 × 101 mm |
| Total Length (L) | 120 mm |
| Outer Diameter | Φ71 mm |
| Material Hardness | HB250-300 (40Cr, quenched & tempered) |
| Surface Treatment | Black oxide / anti-rust coating (standard) |
| Standard | SWC series (JB/T 5513) |
| Customization | OEM – custom sizes, materials, and finishes |
| Stock Availability | Ample – ready for immediate shipment |
| Lead Time | 7-15 days for custom orders |
| Place of Origin | Guangdong, China |
SWC120 Welded Yoke – Detailed Dimensions
| Dimension | Value |
|---|---|
| Total Length (L) | 120 mm |
| Cross Shaft Diameter (φM) | 45 mm |
| Cross Shaft Length (H) | 101 mm |
| Outer Diameter | Φ71 mm |
| Material Hardness | HB250-300 (40Cr, quenched & tempered) |
| Rotating Diameter (D) | 120 mm |
📐 All dimensions are in millimeters (mm). Custom dimensions and specifications available upon request.
Product Structure
Forged Yoke Body – Precision-forged from 40Cr alloy steel for superior grain structure and durability.
Cross Shaft Bearing Bores – Precision-machined bearing holes (45×101mm) for accurate cross shaft fit and extended bearing life.
Welded Assembly – Precision welding ensures secure and reliable construction.
40Cr Alloy Steel – High-strength material with quenched & tempered heat treatment (HB250-300) for superior wear resistance and fatigue strength.
💡 How it works: The SWC120 welded yoke serves as the critical connection point between the cardan shaft cross shaft and the driven equipment. The forged construction provides the strength to withstand heavy shock loads, while the precision-machined bearing bores ensure smooth rotation and long service life. The SWC series uses an integral yoke architecture that eliminates bolt connections found in traditional split-housing designs, dramatically improving reliability. This design can accommodate axis angles up to 25°, making it highly effective for heavy industrial machinery with changing layout configurations.
Forged Welded vs Cast – Why Choose Forged?
| Feature | Forged Welded (SWC120) | Cast Design |
|---|---|---|
| Grain structure | Superior – aligned with stress | Random – weaker |
| Strength | Higher – no internal voids | Lower – potential porosity |
| Durability | Excellent – impact resistant | Moderate – can crack under shock |
| Fatigue resistance | Superior – consistent grain flow | Lower – stress concentrations |
| Service life | Longer | Standard |
| Best for | Heavy-duty, high-torque, high-reliability applications | Light-duty applications |
✅ Choose forged welded (SWC120) for applications requiring maximum strength, durability, and reliability – ideal for mining, metallurgy, steel mills, and heavy industrial drives.
Material – 40Cr Alloy Steel
The SWC120 welded yoke is manufactured from 40Cr alloy steel with quenched & tempered heat treatment:
| Property | Specification |
|---|---|
| Material | 40Cr (GB/T 3077) – chromium alloy steel |
| Heat Treatment | Quenching + Tempering (调质) |
| Hardness | HB250-300 |
| Tensile Strength | ≥980 MPa |
| Yield Strength | ≥785 MPa |
| Elongation | ≥9% |
| Impact Toughness | Excellent low-temperature impact toughness |
| Wear Resistance | High – suitable for heavy-duty applications |
💡 40Cr offers superior strength and toughness compared to standard 45# steel, with excellent hardenability and fatigue resistance. The quenched & tempered treatment provides an optimal balance of hardness (HB250-300) and toughness for demanding industrial applications.
SWC Series – Overview
The SWC series features integral fork head (whole yoke) construction – a single-piece forged yoke that eliminates the bolt-clamped bearing cap design found in split-housing alternatives. Key advantages include:
| Feature | Benefit |
|---|---|
| Integral yoke design | No bolt connections – eliminates bolt loosening and breakage |
| Large angular compensation | 15-25° axis angle – superior to SWP types (~10°) |
| High transmission efficiency | 98-99.8% – energy-saving operation |
| High load capacity | Greater torque than other couplings with same rotating diameter |
| Low noise operation | 30-40 dB – smooth, quiet operation |
| Long service life | 30-50% longer than bolt-connected designs |
💡 SWC120 is a light to medium-duty specification within the SWC series, ideal for packaging, textile, automation equipment, and other medium-load applications.
Applications
Mining Equipment – Conveyor drives, crushers, feeders
Metallurgical Machinery – Rolling mills, continuous casting lines
Steel Mills – Main drive and auxiliary transmissions
Heavy Industrial Drives – High-torque power transmission
Cranes & Hoists – Lifting and material handling equipment
Paper Machinery – Paper production equipment
Construction Equipment – Heavy machinery drives
Petroleum Equipment – Oil and gas machinery
Packaging Machinery – Conveyor and drive systems
Textile Machinery – Spinning and weaving equipment
Automation Equipment – Precision drive systems
Why Choose Apex Coupling for SWC120 Welded Yokes?
| Advantage | Description |
|---|---|
| Factory Direct | Competitive B2B pricing – no middlemen |
| Premium 40Cr Steel | High-strength alloy – quenched & tempered HB250-300 |
| Forged Construction | Superior grain structure – eliminates weaknesses |
| Precision Machining | Accurate bearing bores – ensures proper fit |
| SWC120 Standard | Direct replacement – cross shaft 45×101mm, L=120mm |
| Ample Stock | Ready for immediate shipment |
| OEM Customization | Custom sizes, materials, and finishes available |
| ISO9001 Certified | Quality assured manufacturing |
FAQ
Q: What is a welded yoke (fork head)?
A: A welded yoke (also called a fork head) is a critical component of a cardan shaft that connects the cross shaft to the driven equipment. It transmits torque from the universal joint through the welded assembly.
Q: What material is used for the SWC120 welded yoke?
A: The SWC120 welded yoke is manufactured from 40Cr alloy steel with quenched & tempered heat treatment to HB250-300 hardness.
Q: What are the dimensions of the SWC120 welded yoke?
A: Cross shaft bearing: 45×101mm, total length: 120mm, diameter: Φ71mm.
Q: Is this a direct replacement for SWC120 cardan shafts?
A: Yes. The SWC120 welded yoke is manufactured to SWC series standards (JB/T 5513) and is a direct replacement for SWC120 cardan shaft welded yokes.
Q: What is the advantage of forged construction?
A: Forged construction provides superior grain structure with no internal voids, resulting in higher strength, better fatigue resistance, and longer service life compared to cast alternatives.
Q: What is the maximum operating angle?
A: The SWC series can accommodate axis angles up to 25°, making it highly effective for heavy industrial machinery with changing layout configurations.
Q: Can I get a custom welded yoke?
A: Yes. We offer OEM customization – custom sizes, materials (42CrMo, 35CrMo, etc.), and surface finishes.
Q: What is the lead time?
A: Stock items ship immediately. Custom orders typically require 7-15 days.
Q: What are the common applications?
A: Mining equipment, metallurgical machinery, rolling mills, steel mills, conveyors, cranes, paper machinery, packaging equipment, textile machinery, and heavy industrial drives.
Q: What is the warranty?
A: 1 Year – quality assured.
Request a Quote
Send us your required specifications (SWC120 standard or custom), quantity, and any customization requirements. Our engineers will provide a quotation within 24 hours.
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