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SWC285BH Heavy-Duty Cardan Shaft – Integral Fork Head, 120 kN·m, 8-Bolt Flange
Model Number
Check below, custom
SWC285BH
- Phone : +86 13431039760
- Wechat : +86 13431039760
- Whatsapp : +86 13431039760
- Email : ella@apexcoupling.com
Product Description
SWC285BH Heavy-Duty Cardan Shaft – Integral Fork Head, 120 kN·m, 8-Bolt Flange for Heavy Industry
Factory Direct | 42CrMo / 40Cr Alloy Steel | Integral Forged Fork Head | 120 kN·m Nominal Torque | 15-25° Axis Angle | Telescopic Welding Type | 8-Bolt Flange Connection | Painting Finish | OEM Customizable
The Apexcoupling SWC285BH is a high-capacity standard telescopic welding type cardan shaft engineered for the most demanding heavy industrial power transmission applications. Featuring a robust integral forged fork head without bolt connections, this coupling delivers superior structural strength, reliability, and extended service life. With 15-25° angle compensation capability, high transmission efficiency (98-99.8%), and premium alloy steel construction (42CrMo / 40Cr), the SWC285BH is the definitive solution for steel rolling mills, heavy mining equipment, conveyors, paper machinery, and ship propulsion systems. SWC type cardan shafts are widely used in rolling mill main drives and auxiliary transmissions, punch presses, straighteners, crushers, ship drives, paper making equipment, common machinery, water pump equipment, test benches, and other mechanical applications.
✅ Integral forged fork head – eliminates bolt loosening and breakage. 15-25° axis angle compensation – significantly greater than SWP types (~10°). 120 kN·m torque capacity – handles heavy loads. 98-99.8% transmission efficiency – energy-saving operation. 8-bolt flange connection – secure and reliable mounting. JB/T5513-1991 / JB/T5513-2006 compliant. SWC type has larger angle compensation capability, with SWC type axis angle up to 15-25°.
Key Technical Specifications (JB/T5513-1991 / JB/T5513-2006)
| Parameter | Value |
|---|---|
| Model | SWC285BH |
| Type | BH – Standard Telescopic Welding Type |
| Rotating Diameter (D) | 285 mm |
| Nominal Torque (Tn) | 90-120 kN·m (approx. 90,000-120,000 N·m) |
| Fatigue Torque (Tf) | 45 kN·m |
| Maximum Axis Angle | ≤15° (15-25° customizable) |
| Telescopic Stroke (Ls) | 140 mm |
| Minimum Length (Lmin) | 1190 mm |
| Flange Outer Diameter (D1) | 245 mm (js11) |
| Spigot Diameter (D2) | 170 mm (H7) |
| Tube Outer Diameter (D3) | 194 mm |
| Spigot Depth (Lm) | 160 mm |
| Bolt Holes (n-d) | 8-21 mm (8 holes evenly distributed) |
| Flange Thickness (k) | 27 mm |
| Key Size (b × h) | 40 × 15 mm |
| Moment of Inertia (Lmin) | 2.011 kg·m² |
| Moment of Inertia (per 100mm) | 0.051 kg·m² |
| Weight (Lmin) | 263 kg |
| Weight Increase (per 100mm) | 6.3 kg |
| Maximum Speed | 0 – 4000 RPM (customizable; 1300 RPM with G6.3 balancing) |
| Body Material | 42CrMo / 40Cr alloy steel (quenching process) |
| Standard | JB/T5513-1991 / JB/T5513-2006 |
| Surface Treatment | Painting (yellow, orange, black, white available) |
| Customization | OEM – custom lengths, flange interfaces, and finishes |
| Place of Origin | Guangdong, China |
📐 Custom lengths and telescopic strokes available. Contact our engineering team for custom sizing.
Product Structure & Components
Integral Forged Fork Head – One-piece construction without bolt connections – eliminates the most common failure point in traditional universal joints. The SWC series uses an integral fork structure where bearings are fixed without bolts, avoiding loose bolt breakage and simplifying maintenance.
Cross Shaft Assembly (Spider) – Precision cross shaft with multi-row needle roller bearings for high wear resistance and strength. Equipped with grease fittings for easy lubrication.
Telescopic Welded Shaft – Standard telescopic design with 140mm stroke compensates for axial displacement.
8-Bolt Flange Connection – 245mm outer diameter flange with 8 holes evenly distributed at 21mm diameter for secure mounting.
Alloy Steel Construction – 42CrMo or 40Cr with quenching process – high strength and durability. Raw blanks are refined via quenching and tempering, while spline shafts undergo intensive induction hardening.
💡 How it works: The SWC285BH cardan shaft uses an integral fork head design that eliminates the weak link of bolt compression bearing seats, completely avoiding common malignant damage caused by bolt loosening or breaking. Torque is transmitted through the cross shaft, while the telescopic shaft accommodates axial displacement. The 8-bolt flange connection provides secure mounting to driven equipment. The integral fork design provides 30-50% longer service life than bolt-connected designs. The SWC type offers greater angle compensation capability (15-25°) compared to SWP type (~10°).
SWC285BH vs Other SWC Types – Quick Comparison
| Type | Description | Best For |
|---|---|---|
| BH | Standard Telescopic Welding | General industrial, most common type |
| BF | Standard Telescopic Flange | Quick assembly/disassembly, regular maintenance |
| DH | Short Telescopic Welding | Space-constrained installations |
| CH | Long Telescopic Welding | Large axial displacement requirements |
| WH | Non-Telescopic Welding | Fixed-length applications |
| WF | Non-Telescopic Flange | Fixed-length with flange connection |
💡 BH (Standard Telescopic Welding) is the most commonly used type in the SWC series, offering the best balance of performance, reliability, and versatility for general industrial applications.
Key Features & Advantages
| Advantage | Benefit |
|---|---|
| Integral Fork Head Design | No bolt connections – eliminates bolt loosening and breakage. Enhanced reliability and service life |
| 15-25° Angle Compensation | Greater than SWP types (~10°) – accommodates significant misalignment |
| High Transmission Efficiency | 98-99.8% – energy-saving operation for high-power transmission |
| High Load Capacity | 120 kN·m torque – transmits greater torque than other couplings with same rotating diameter |
| Telescopic Welded Design | 140mm standard stroke – accommodates axial displacement |
| Enhanced Materials | 42CrMo / 40Cr alloy steel – high strength and wear resistance |
| Needle Roller Bearings | Multi-row needle bearings – high dynamic load capacity, wear resistance |
| Grease Fittings | Equipped with注油孔 – easy lubrication and maintenance |
| 8-Bolt Flange | Secure mounting – 8×M21 bolts on 245mm PCD |
| Heat Treatment | Quenching and tempering of blanks, induction hardening of spline shafts |
| Dynamic Balancing | Optional balancing up to G6.3 grade – minimizes vibration at high speeds |
| Corrosion Protection | Industrial-grade anti-rust spray paint – seals against moisture and harsh environments |
| Customizable | Lengths, telescopic strokes, flange interfaces – fully customizable |
| JB/T5513 Standard | Manufactured to established Chinese national standard |
Applications
The SWC285BH cardan shaft is widely used across heavy industrial sectors:
Steel Rolling Mills – Main drive and auxiliary transmissions, hot rolling and cold rolling applications
Mining Equipment – Heavy-duty conveyors, crushers, feeders
Metallurgical Equipment – Continuous casting lines, straighteners
Paper Machinery – Heavy-duty paper production lines
Ship Drives – Marine propulsion auxiliary systems
Cranes & Hoists – Heavy-duty lifting and material handling
Construction Machinery – Large-scale heavy equipment drives
Petroleum Equipment – Oil and gas machinery
Punch Presses & Straighteners – Heavy metal forming equipment
Test Benches – Power transmission testing
Water Pump Equipment – Large-scale industrial pumps
💡 SWC type cross shaft universal couplings are widely used in rolling mill main drive and auxiliary transmission, as well as in metallurgy, lifting, engineering transportation, mining, petroleum, shipbuilding, coal, rubber, papermaking machinery, and other heavy machinery industries.
Why Choose Apex Coupling for SWC285BH Cardan Shafts?
| Advantage | Description |
|---|---|
| Factory Direct | Competitive B2B pricing – no middlemen |
| Premium Materials | 42CrMo / 40Cr alloy steel – high strength and durability |
| Integral Fork Head | No bolt connections – superior reliability and longer service life |
| Large Angle Compensation | 15-25° – accommodates significant misalignment |
| High Efficiency | 98-99.8% – energy-saving operation |
| Customization | Lengths, telescopic strokes, flange interfaces – fully customizable |
| JB/T5513 Standard | Manufactured to established Chinese national standard |
| Ample Stock | Semi-finished stock available – fast delivery |
| Enhanced Bearings | Multi-row needle roller bearings with grease fittings – wear resistance |
| 8-Bolt Flange | Secure mounting for heavy-duty applications |
| Heat Treatment | Quenching, tempering, and induction hardening – maximum durability |
| Dynamic Balancing | Optional G6.3 grade balancing – minimizes vibration at high speeds |
Customization Options
| Customization | Options |
|---|---|
| Total Length | Custom lengths available – specify your required Lmin/Lmax |
| Telescopic Stroke | Standard 140mm – custom strokes available |
| Flange Interface | Flange outer diameter, spigot diameter, bolt hole pattern – customizable |
| Material | 42CrMo, 40Cr, or customer-specified alloys |
| Surface Treatment | Painting – yellow, orange, black, white, or custom |
| Balancing | Dynamic balancing available for high-speed applications |
| Flange Type | Round, square, end-tooth, jaw-type – customize to your requirements |
FAQ
Q: What is an SWC285BH cardan shaft?
A: The SWC285BH is a standard telescopic welding type universal joint drive shaft with an integral fork head design. It transmits torque between shafts that are not collinear, with angle compensation up to 25°. SWC type has larger angle compensation capability, with axis angle up to 15-25°.
Q: What is the advantage of the integral fork head design?
A: The integral fork head eliminates bolt connections, which are a common failure point in traditional universal joints. This significantly improves structural strength, reliability, and service life. SWC type is an integral fork head structure without bolt connections.
Q: What is the maximum operating angle?
A: The SWC285BH offers 15-25° axis angle compensation – significantly larger than the SWP type (~10°).
Q: What is the transmission efficiency?
A: The transmission efficiency reaches 98-99.8% – providing significant energy savings for high-power transmission applications.
Q: What materials are used?
A: The coupling is manufactured from 42CrMo or 40Cr alloy steel with a quenching process for high strength and durability.
Q: What is the torque and speed range?
A: Nominal torque is 90-120 kN·m (approx. 90,000-120,000 N·m). Maximum speed is up to 4000 RPM. Speeds above 1000 RPM require dynamic balancing up to G6.3 grade.
Q: What is the telescopic stroke?
A: The standard telescopic stroke is 140mm.
Q: What are the flange specifications?
A: Flange outer diameter: 245mm (js11), spigot diameter: 170mm (H7), 8×M21 bolt holes.
Q: What industries is this coupling suitable for?
A: Steel rolling mills, mining, conveyors, paper machinery, ship drives, crushers, construction machinery, agricultural equipment, petroleum machinery, and general industrial applications.
Q: Does the coupling require balancing?
A: For high-speed applications (above normal operating speeds), dynamic balancing up to G6.3 grade is recommended. Please specify when ordering.
Q: Can I get a custom coupling?
A: Yes. We offer OEM customization – custom lengths, telescopic strokes, flange interfaces, materials, and finishes.
Q: What is the warranty?
A: 1 Year – quality assured.
Request a Quote
Send us your required specifications (length, flange interface, telescopic stroke), quantity, and any customization requirements. Our engineers will provide a quotation within 24 hours.
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SWC285BH cardan shaft
