Product Description

Production description
Almost 15 years,Xihu (West Lake) Dis. has focused on the research and development, design and manufacture of cardan shafts on the rubber machinery. Our producted cardan shafts are widely used by rubber and plastic machinery manufacturer, famous for example, HangZhou Hua Han Plastic Machinery Co. Ltd.; HangZhou Rubber & Plastics Machinery Group, HangZhou DoubleStar Rubber Machinery Co. Ltd., ZheJiang dedicated machinery Co. Ltd. and other large domestic rubber machinery production enterprises.
Now it is out of the country, the products are exported to Europe, North America and Southeast Asia and other regions. Designation of the universal shafts used in rolling machine, mixer, open rubber mixing machine. Our cardan shafts with the features such as, anti vibration, anti impact in the bad environment, anti dust corrosion, long service life,no need more maintenance, lengthened the cardan shaft repair cycle. According to customer requirements ,we can also customize the special connection mode of universal shafts with high coaxial, flexible joints, easy installation, perfect after-sales service.
The following table for SWC Medium-sized Universal Shaft Parameters. 

Designs

Data and Sizes of SWCZ Series Universal Joint Couplings

Type	Design Data Item	SWC160	SWC180	SWC200	SWC225	SWC250	SWC265	SWC285	SWC315	SWC350	SWC390	SWC440	SWC490	SWC550	SWC620
A	L	740	800	900	1000	1060	1120	1270	1390	1520	1530	1690	1850	2060	2280
	LV	100	100	120	140	140	140	140	140	150	170	190	190	240	250
	M(kg)	65	83	115	152	219	260	311	432	610	804	1122	1468	2154	2830
B	L	480	530	590	640	730	790	840	930	100	1571	1130	1340	1400	1520
	M(kg)	44	60	85	110	160	180	226	320	440	590	820	1090	1560	2100
C	L	380	420	480	500	560	600	640	720	782	860	1040	1080	1220	1360
	M(kg)	35	48	66	90	130	160	189	270	355	510	780	970	1330	1865
D	L	520	580	620	690	760	810	860	970	1030	1120	1230	1360	1550	1720
	M(kg)	48	65	90	120	173	220	250	355	485	665	920	1240	1765	2390
E	L	800	850	940	1050	1120	1180	1320	1440	1550	1710	1880	2050	2310	2540
	LV	100	100	120	140	140	140	140	140	150	170	190	190	240	250
	M(kg)	70	92	126	165	238	280	340	472	660	886	1230	1625	2368	3135
	Tn(kN·m)	16	22.4	31.5	40	63	80	90	125	180	250	355	500	710	1000
	TF(kN·m)	8	11.2	16	20	31.5	40	45	63	90	125	180	250	355	500
	Β(°)	15	15	15	15	15	15	15	15	15	15	15	15	15	15
	D	160	180	200	225	250	265	285	315	350	390	440	490	550	620
	Df	160	180	200	225	250	265	285	315	350	3690	440	490	550	620
	D1	137	155	170	196	218	233	245	280	310	345	390	435	492	555
	D2(H9)	100	105	120	135	150	160	170	185	210	235	255	275	320	380
	D3	108	114	140	159	168	180	194	219	245	273	299	325	402	426
	Lm	95	105	110	125	140	150	160	180	195	215	260	270	305	340
	K	16	17	18	20	25	25	27	32	35	40	42	47	50	55
	T	4	5	5	5	6	6	7	8	8	8	10	12	12	12
	N	8	8	8	8	8	8	8	10	10	10	16	16	16	16
	D	15	17	17	17	19	19	21	23	23	25	28	31	31	38
	B	20	24	32	32	40	40	40	40	50	70	80	90	100	100
	G	6.0	7.0	9.0	9.0	12.5	12.5	12.5	15.0	16.0	18.0	20.0	22.5	22.5	25
	MI(Kg)	2.57	3	3.85	3.85	5.17	6	6.75	8.25	10.6	13	18.50	23.75	29.12	38.08
	Size	M14	M16	M16	M16	M18	M18	M20	M22	M22	M24	M27	M30	M30	M36
	Tightening torque(Nm)	180	270	270	270	372	372	526	710	710	906	1340	1820	1820	3170

1. Notations: 
L=Standard length, or compressed length for designs with length compensation; 
LV=Length compensation; 
M=Weight; 
Tn=Nominal torque(Yield torque 50% over Tn); 
TF=Fatigue torque, I. E. Permissible torque as determined according to the fatigue strength
Under reversing loads; 
β=Maximum deflection angle; 
MI=weight per 100mm tube
2. Millimeters are used as measurement units except where noted; 
3. Please consult us for customizations regarding length, length compensation and
Flange connections. 
(DIN or SAT etc. )
  

Types of Splines

There are 4 types of splines: Involute, Parallel key, helical, and ball. Learn about their characteristics. And, if you’re not sure what they are, you can always request a quotation. These splines are commonly used for building special machinery, repair jobs, and other applications. The CZPT Manufacturing Company manufactures these shafts. It is a specialty manufacturer and we welcome your business.

Involute splines

The involute spline provides a more rigid and durable structure, and is available in a variety of diameters and spline counts. Generally, steel, carbon steel, or titanium are used as raw materials. Other materials, such as carbon fiber, may be suitable. However, titanium can be difficult to produce, so some manufacturers make splines using other constituents.
When splines are used in shafts, they prevent parts from separating during operation. These features make them an ideal choice for securing mechanical assemblies. Splines with inward-curving grooves do not have sharp corners and are therefore less likely to break or separate while they are in operation. These properties help them to withstand high-speed operations, such as braking, accelerating, and reversing.
A male spline is fitted with an externally-oriented face, and a female spline is inserted through the center. The teeth of the male spline typically have chamfered tips to provide clearance with the transition area. The radii and width of the teeth of a male spline are typically larger than those of a female spline. These specifications are specified in ANSI or DIN design manuals.
The effective tooth thickness of a spline depends on the involute profile error and the lead error. Also, the spacing of the spline teeth and keyways can affect the effective tooth thickness. Involute splines in a splined shaft are designed so that at least 25 percent of the spline teeth engage during coupling, which results in a uniform distribution of load and wear on the spline.

Parallel key splines

A parallel splined shaft has a helix of equal-sized grooves around its circumference. These grooves are generally parallel or involute. Splines minimize stress concentrations in stationary joints and allow linear and rotary motion. Splines may be cut or cold-rolled. Cold-rolled splines have more strength than cut spines and are often used in applications that require high strength, accuracy, and a smooth surface.
A parallel key splined shaft features grooves and keys that are parallel to the axis of the shaft. This design is best suited for applications where load bearing is a primary concern and a smooth motion is needed. A parallel key splined shaft can be made from alloy steels, which are iron-based alloys that may also contain chromium, nickel, molybdenum, copper, or other alloying materials.
A splined shaft can be used to transmit torque and provide anti-rotation when operating as a linear guide. These shafts have square profiles that match up with grooves in a mating piece and transmit torque and rotation. They can also be easily changed in length, and are commonly used in aerospace. Its reliability and fatigue life make it an excellent choice for many applications.
The main difference between a parallel key splined shaft and a keyed shaft is that the former offers more flexibility. They lack slots, which reduce torque-transmitting capacity. Splines offer equal load distribution along the gear teeth, which translates into a longer fatigue life for the shaft. In agricultural applications, shaft life is essential. Agricultural equipment, for example, requires the ability to function at high speeds for extended periods of time.

Involute helical splines

Involute splines are a common design for splined shafts. They are the most commonly used type of splined shaft and feature equal spacing among their teeth. The teeth of this design are also shorter than those of the parallel spline shaft, reducing stress concentration. These splines can be used to transmit power to floating or permanently fixed gears, and reduce stress concentrations in the stationary joint. Involute splines are the most common type of splined shaft, and are widely used for a variety of applications in automotive, machine tools, and more.
Involute helical spline shafts are ideal for applications involving axial motion and rotation. They allow for face coupling engagement and disengagement. This design also allows for a larger diameter than a parallel spline shaft. The result is a highly efficient gearbox. Besides being durable, splines can also be used for other applications involving torque and energy transfer.
A new statistical model can be used to determine the number of teeth that engage for a given load. These splines are characterized by a tight fit at the major diameters, thereby transferring concentricity from the shaft to the female spline. A male spline has chamfered tips for clearance with the transition area. ANSI and DIN design manuals specify the different classes of fit.
The design of involute helical splines is similar to that of gears, and their ridges or teeth are matched with the corresponding grooves in a mating piece. It enables torque and rotation to be transferred to a mate piece while maintaining alignment of the 2 components. Different types of splines are used in different applications. Different splines can have different levels of tooth height.

Involute ball splines

When splines are used, they allow the shaft and hub to engage evenly over the shaft’s entire circumference. Because the teeth are evenly spaced, the load that they can transfer is uniform and their position is always the same regardless of shaft length. Whether the shaft is used to transmit torque or to transmit power, splines are a great choice. They provide maximum strength and allow for linear or rotary motion.
There are 3 basic types of splines: helical, crown, and ball. Crown splines feature equally spaced grooves. Crown splines feature involute sides and parallel sides. Helical splines use involute teeth and are often used in small diameter shafts. Ball splines contain a ball bearing inside the splined shaft to facilitate rotary motion and minimize stress concentration in stationary joints.
The 2 types of splines are classified under the ANSI classes of fit. Fillet root splines have teeth that mesh along the longitudinal axis of rotation. Flat root splines have similar teeth, but are intended to optimize strength for short-term use. Both types of splines are important for ensuring the shaft aligns properly and is not misaligned.
The friction coefficient of the hub is a complex process. When the hub is off-center, the center moves in predictable but irregular motion. Moreover, when the shaft is centered, the center may oscillate between being centered and being off-center. To compensate for this, the torque must be adequate to keep the shaft in its axis during all rotation angles. While straight-sided splines provide similar centering, they have lower misalignment load factors.

Keyed shafts

Essentially, splined shafts have teeth or ridges that fit together to transfer torque. Because splines are not as tall as involute gears, they offer uniform torque transfer. Additionally, they provide the opportunity for torque and rotational changes and improve wear resistance. In addition to their durability, splined shafts are popular in the aerospace industry and provide increased reliability and fatigue life.
Keyed shafts are available in different materials, lengths, and diameters. When used in high-power drive applications, they offer higher torque and rotational speeds. The higher torque they produce helps them deliver power to the gearbox. However, they are not as durable as splined shafts, which is why the latter is usually preferred in these applications. And while they’re more expensive, they’re equally effective when it comes to torque delivery.
Parallel keyed shafts have separate profiles and ridges and are used in applications requiring accuracy and precision. Keyed shafts with rolled splines are 35% stronger than cut splines and are used where precision is essential. These splines also have a smooth finish, which can make them a good choice for precision applications. They also work well with gears and other mechanical systems that require accurate torque transfer.
Carbon steel is another material used for splined shafts. Carbon steel is known for its malleability, and its shallow carbon content helps create reliable motion. However, if you’re looking for something more durable, consider ferrous steel. This type contains metals such as nickel, chromium, and molybdenum. And it’s important to remember that carbon steel is not the only material to consider.