SWC Long Flex Type Universal Joint Coupling Cardan Drive Shaft

Product Description

Product Description

 The cross shaft universal coupling (referred to as universal shaft) is one of its core products, covering four major series: light, medium, heavy and hollow. It features strong load-bearing capacity, high stability and wide adaptability, and is widely used in multiple industries such as metallurgy, rubber and plastic, papermaking, lifting, power and mining.

 

Core product series and structural forms:

Universal joints are classified into four core series based on their load-bearing capacity and structural characteristics. Each series features different structural forms to meet the installation, expansion, and space requirements of various working conditions. Unless otherwise specified, they all adopt a cross shaft core structure, and torque transmission and shaft Angle compensation are achieved through the cross shaft assembly.

1.SWC-I type light cross shaft universal coupling
(1)Adapted scenarios: Light load, medium and low speed working conditions, such as woodworking machine tools, centrifugal pumps, ventilators and other light impact equipment;
(2)Structural type: It is divided into three categories - Type A (extendable welded type), Type B (non-extendable welded type), and Type C (short non-extendable unit structure type).
(3)Models covered: 58/65/75/90/100/120/150/180/200/225, a total of 10 specifications rotary 58 to 225 mm diameter, the nominal torque of 90 ~ 11000 n. m.
2. SWC type medium-sized cross shaft universal coupling
(1)Adapted scenarios: Medium load, conventional industrial working conditions, such as continuous working roller tables, medium-sized section steel rolling mills, compressors and other medium impact equipment;
(2)Structural type: It is classified into 5 types - Type A (extendable welded type), Type B (non-extendable welded type), Type C (short type without extendable unit structure), Type D (long type without extendable unit structure), and Type E (extendable unit structure type).
(3)Models covered: 160/180/200/225/250/265/285/315/350/390/440/490/550/620, a total of 14 specifications rotary 160 ~ 620 mm diameter, nominal torque range than light series.
3. SWCZ type heavy-duty cross shaft universal coupling
(1)Adaptation scenarios: Heavy-duty and high-torque heavy industrial conditions, such as coiling machines, primary rolling mills, thick plate shearing machines and other extremely heavy impact equipment;
(2)Structural type: It is divided into three categories - C type (short type without expansion unit structure), D type (long type without expansion unit structure), and E type (expandable unit structure type).
(3)Models covered: 620/680 1100/1200/780/840/920/1000 / specifications, such as turning 620 ~ 1200 mm diameter, the nominal torque of 1600 ~ 8000 kn m., super-heavy torque for special.

Key technical parameters and core definitions:

The technical parameters of universal joints are the core basis for selection and application. All parameters in Chunling product samples are verified values under actual working conditions. When the unit is not specified, the length/hole diameter type is in millimeters (mm), the torque type is in newton-meters (N · m)/kN · m (kN · m), the Angle is in degrees (°), and the mass is in kilograms (kg). The definitions of core parameters and general indicators are as follows:
1. Length-related parameters (core indicators of scalable type The working length of the universal joint is determined by the installation distance of the equipment and the expansion and contraction amount during operation. The core indicators are the shortest compression length, expansion and contraction amount, and the maximum working length. The three satisfy the formula: LZ+La=LBmax
(1) LZ (Minimum Compression Length) : The minimum length of a telescopic universal joint in its shortened state, which cannot be further compressed.
(2) La Expansion range: The maximum length that the universal joint can extend. It is strictly prohibited to extend beyond the range, otherwise the spline pair will be damaged.
(3) LBmax (Maximum Working Length) : The longest length that can be achieved during operation, with the optimal working length being LZ+1/3La (applicable to the vast majority of working conditions);
(4) The non-expansion type universal joint has no expansion allowance, and its length is a fixed structural dimension. It can be customized according to the user's requirements.
2. Torque-related parameters (core indicators of load-bearing capacity
(1) Tn (Nominal Torque) : The theoretical calculated carrying torque under given conditions (rotational speed n=10r/min, shaft Angle = 3°, bearing life L=5000 hours, and stable load) serves as the basis for selection.
(2) Tf (Fatigue Torque) : The allowable torque determined based on fatigue strength under alternating loads, suitable for frequent start-stop and load fluctuation conditions.
(3) Tc (Calculated Torque) : The actual required torque calculated based on the actual equipment operating conditions must meet the requirement that Tc≤Tn/Tf; otherwise, overload damage may occur.
3. Angle-related parameters (axis deflection Angle compensation)
(1) Maximum axis deflection Angle β : The maximum single-direction bending Angle allowed when the universal joint is in operation The limit values vary among different series - SWC-I type (58~120 type 35°, 150~225 type 25°), SWC type 15°, SWCZ type (620 type 5°, the rest 10°), KSWC type (conventional 8°/ limit 15°);
(2) Composite axis Angle: When the universal joint has angles simultaneously in the horizontal and vertical planes, the composite Angle is calculated according to the formula The calculation of tgβ= tgβ 1 +tgβ 2 (β 1 is the horizontal folded Angle, β 2 is the vertical folded Angle), and the combined folded Angle must not exceed the maximum limit value in one direction.
4. Aperture and fit accuracy
(1) Core mating hole diameter: D2 (H9/H7 precision) is the core mating hole between the universal joint and the equipment. For light/medium type, it is H9 precision; for KSWC hollow type, it is H7 high precision; for heavy type, it is the special mating precision for heavy loads. D3 represents the pipe diameter. Some models are marked as D3×δ (pipe diameter × wall thickness).
(2) Flange bolt holes: The number of bolt holes (n) varies among different series of flanges. For instance, for the SWC-I type, n=6; for the SWC type, n=8/10/16; for the SWCZ type, n=20/24; and for the KSWC type, n=8/10/16, which are suitable for the connection requirements of various devices.
5. Other key parameters
(1) Rotational diameter D: The maximum rotational diameter of the universal joint during operation, which should be matched with the installation space of the equipment to avoid interference.
(2) Moment of inertia: The KSWC hollow type is separately marked with the moment of inertia (1.165-88.74kg · m²), which serves as an important basis for the selection of high-speed equipment.
(3) mL (mass increased by 100mm) : This parameter is marked on all models and is used for mass calculation of non-standard length universal joints and equipment load calculation.

 

item	value
Applicable Industries	Manufacturing Plant
Material	Stainless Steel
Standard or Nonstandard	Standard
Place of Origin	China
Structure	Structure

 

 

Product Parameters