SWC-BH Standard Telescopic Universal Joint Coupling | 15-25° Angle, 98-99.8% Efficiency

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SWC-BH Standard Telescopic Universal Joint Coupling – Integral Fork Head, 15-25° Angle

Model Number
Check below, custom

SWC58
SWC65
SWC75
SWC90

SWC100

SWC120

SWC150

SWC180

SWC200

SWC225

SWC250

SWC285

SWC315

SWC350

SWC390
SWC440

SWC490
SWC550

Product Description

SWC-BH Standard Telescopic Universal Joint Coupling – Integral Fork Head, 15-25° Angle, 98-99.8% Efficiency

The Apexcoupling SWC-BH series is a high-performance standard telescopic universal joint coupling engineered for heavy-duty industrial applications where reliability, torque capacity, and angular misalignment compensation are critical. Featuring an integral fork head (整体式叉头) design that completely eliminates the weak link of bolt connections, this coupling avoids the common and costly failures caused by bolt loosening or breakage. With a 15-25° axis angle compensation capability – significantly higher than the ~10° of SWP types – the SWC-BH delivers exceptional flexibility in demanding drive systems. Manufactured from high-strength alloy steel with precision cross shafts and needle bearings, the SWC-BH series is the ideal solution for rolling mills, mining conveyors, crushers, ship drives, paper machinery, and other heavy industrial applications.

✅ Integral fork head design – eliminates bolt loosening and breakage. 15-25° axis angle compensation – superior to SWP types (~10°). 98-99.8% transmission efficiency – significant energy savings. Low noise operation (30-40 dB) – smooth and reliable. Standard telescopic welding design – accommodates axial displacement. JB/T5531-1991 standard – quality assured. 30-50% longer service life than traditional models.

Key Technical Specifications (JB/T5531-1991)

Model	Rotating Diameter D (mm)	Nominal Torque Tn (kN·m)	Fatigue Torque Tf (kN·m)	Max Axis Angle β (°)	Expansion Ls (mm)	Lmin (mm)	D1 (js11) (mm)	D2 (H7) (mm)	D3 (mm)	Lm (mm)	n-d	k (mm)	t (mm)	b (h9)	g (mm)	Weight G (kg)
SWC58BH	58	0.15	0.075	≤35	35	325	47	30	38	35	4-5	3.5	1.5	–	–	2.2
SWC65BH	65	0.25	0.125	≤35	40	360	52	35	42	40	4-6	4.5	1.7	–	–	3
SWC75BH	75	0.4	0.2	≤35	40	395	62	42	50	45	6-6	5.5	2	–	–	5
SWC90BH	90	0.75	0.375	≤35	45	435	74.5	47	54	50	4-8	6	2.5	–	–	6.6
SWC100BH	100	1.25	0.63	≤25	55	390	84	57	60	55	6-9	7	2.5	–	–	6.1
SWC120BH	120	2.5	1.25	≤25	80	485	102	75	70	65	8-11	8	2.5	–	–	10.8
SWC150BH	150	5	2.5	≤25	80	590	130	90	89	80	8-13	10	3	–	–	24.5
SWC180BH	180	12.5	6.3	≤15	100	810	155	105	114	110	8-17	17	5	24	7	70
SWC200BH	200	36	18	≤15	120	900	170	120	140	120	8-17	18	5	28	8	110
SWC225BH	225	40	20	≤15	140	920	196	135	152	120	8-17	20	5	32	9	122
SWC250BH	250	63	31.5	≤15	140	1035	218	150	168	140	8-19	25	6	40	12.5	172
SWC285BH	285	90	45	≤15	140	1190	245	170	194	160	10-23	27	7	40	15	263
SWC315BH	315	125	62.5	≤15	140	1315	280	185	219	180	10-23	32	8	40	15	382
SWC350BH	350	180	90	≤15	150	1410	310	210	267	194	10-25	35	8	70	18	582
SWC390BH	390	250	125	≤15	170	1590	345	235	267	215	16-28	40	8	80	20	738
SWC440BH	440	355	177.5	≤15	190	1875	390	255	325	260	16-31	42	10	90	22.5	1190
SWC490BH	490	500	250	≤15	190	1985	435	275	325	270	16-31	47	12	100	22.5	1452
SWC550BH	550	710	355	≤15	240	2300	492	320	426	305	16-31	50	12	100	22.5	2380

📐 Lmin dimensions are for reference. Additional sizes and custom lengths available upon request. Contact our engineering team for custom sizing.

Integral Fork Head Design – The SWC Advantage

The SWC-BH series features a integral fork head (整体式叉头) design that offers several critical advantages over traditional universal joints:

Feature	SWC-BH (Integral Fork)	Traditional (Bolt Connection)
Fork head design	One-piece integral – no bolts	Bolt-connected fork head
Failure mode	None – no bolt-related failures	Bolt loosening or breakage
Service life	30-50% longer	Standard
Maintenance	Minimal – no bolt inspection	Frequent bolt inspection required
Reliability	High – no weak links	Moderate – bolt failure is a common risk
Structural integrity	Superior – compact and robust	Vulnerable at bolt connections

✅ The integral fork head eliminates the weak link of the bolt compression bearing seat (cover), completely avoiding the common malignant damage caused by bolt loosening or breaking. This results in a 30-50% longer service life compared to other types.

Product Structure

Integral Fork Head (Flange Fork) – One-piece forged design without bolt connections – eliminates the weak link of bolt compression bearing seats.
Cross Shaft (Spider) – Precision-ground cross axis with needle bearings for smooth torque transmission.
Telescopic Spline Shaft & Spline Sleeve – Standard telescopic welding design provides length compensation with a double-layer spline connection to avoid key tooth wear.
High-Strength Alloy Steel – 35CrMo alloy steel, quenched and tempered for durability; spline shaft high-frequency hardened for wear resistance.

💡 How it works: The SWC-BH universal joint coupling transmits torque through a precision cross shaft connecting two integral fork heads. The integral fork head design eliminates bolt connections, removing the most common failure point in traditional universal joints. The telescopic spline shaft provides length compensation for axial displacement, while the cross shaft and needle bearings handle angular misalignment up to 25°. The double-layer spline connection ensures reliable torque transmission without key tooth wear.

Product Features & Advantages

Advantage	Benefit
Integral Fork Head Design	Eliminates bolt loosening and breakage – 30-50% longer service life
15-25° Axis Angle Compensation	Greater angular compensation than SWP types (~10°) – accommodates significant misalignment
98-99.8% Transmission Efficiency	High efficiency – significant energy savings for high-power transmission
Low Noise Operation	General noise 30-40 dB(A) – smooth, quiet operation
High Load Capacity	Transmits greater torque than other couplings with the same rotating diameter
Standard Telescopic Welding Design	Accommodates axial displacement – flexible installation
High-Strength Alloy Steel	35CrMo alloy steel – quenched and tempered for durability
Double-Layer Spline Connection	Avoids key tooth wear – reliable torque transmission
Easy Assembly & Disassembly	Simple installation and maintenance – reduces downtime
Wide Application Range	Rolling mills, mining, conveyors, crushers, ship drives, paper machinery
JB/T5531-1991 Standard	Manufactured to established Chinese national standard – quality assured
OEM Customization	Custom lengths and special materials available

Applications

Rolling Mills – Main drive and auxiliary transmissions in steel rolling
Mining Equipment – Conveyors, crushers, feeders
Metallurgical Industry – Continuous casting machines, straighteners
Ship Drives – Marine propulsion and auxiliary systems
Paper Machinery – Paper production equipment
Construction Machinery – Heavy equipment drives
Cranes & Hoists – Lifting and transport machinery
Petroleum Equipment – Oil and gas machinery
Pump Equipment – Water pumps and industrial pumps
Test Benches – Power transmission testing

Why Choose Apex Coupling for SWC-BH Universal Joints?

Advantage	Description
Factory Direct	Competitive B2B pricing – no middlemen
JB/T5531-1991 Standard	Manufactured to established Chinese national standard – quality assured
Integral Fork Head Design	No bolt failure – 30-50% longer service life
15-25° Angle Compensation	Superior angular compensation – more flexible than SWP types
High Efficiency	98-99.8% – energy-saving operation
High Load Capacity	Greater torque than other couplings with same rotating diameter
Low Noise	30-40 dB – quiet, smooth operation
Wide Model Range	SWC58BH to SWC550BH – covers most heavy industrial needs
OEM Customization	Custom lengths and special materials available

FAQ

Q: What is an SWC-BH universal joint coupling?
A: The SWC-BH is a standard telescopic welding type cross shaft universal joint coupling with an integral fork head design. It is manufactured to JB/T5531-1991 standard and is designed for heavy-duty industrial applications requiring high torque capacity and angular misalignment compensation.

Q: What is the advantage of the integral fork head design?
A: The integral fork head eliminates the weak link of bolt compression bearing seats, completely avoiding bolt loosening or breakage – common failure modes in traditional universal joints. This results in a 30-50% longer service life.

Q: What is the maximum operating angle?
A: The SWC-BH series offers 15-25° axis angle compensation – significantly higher than SWP types which reach approximately 10°.

Q: What is the transmission efficiency?
A: The SWC-BH delivers 98-99.8% transmission efficiency – providing significant energy savings in high-power transmission applications.

Q: What is the noise level?
A: The SWC-BH operates at 30-40 dB(A) – smooth, quiet, and reliable.

Q: What materials are used?
A: The coupling is manufactured from high-strength alloy steel (35CrMo, quenched and tempered). The spline shaft is high-frequency hardened for wear resistance.

Q: What are the common applications?
A: Rolling mills, mining conveyors, crushers, ship drives, paper machinery, construction equipment, cranes, and petroleum machinery.

Q: What models are available?
A: Standard models from SWC58BH to SWC550BH – covering rotating diameters from 58 mm to 550 mm. Additional sizes available on request.

Q: Can I get a custom coupling?
A: Yes. We offer OEM customization – custom lengths and special materials available.

Request a Quote

Send us your model (e.g., SWC250BH), rotating diameter, torque, speed, and application details. Our engineers will recommend the optimal model and provide a quotation within 24 hours.