Rokee® Customized RLA Shim Pack Coupling for Customers, Rokee® is a well-known high-quality supplier of couplings and technical services in China.
RLA shim pack coupling is a standard single group shim pack coupling, which belongs to the classic design of metal flexible couplings and is specially developed for medium and low-speed application scenarios. This type of coupling uses a single high-strength metal diaphragm as the core elastic element, which compensates for the relative displacement of the two shafts connected through the elastic deformation of the diaphragm. It has the characteristics of simple structure, good economy, and easy maintenance.
The RLA series shim pack coupling is independently developed by Rongji Industrial Technology (Jiangsu) Co., Ltd. based on high-quality product technology from Europe and Japan. Compared with traditional couplings, it has smaller volume, larger torque of the same type, and more reasonable proportioning size. The connection between the bolt and the diaphragm adopts a special elastic sleeve structure, which can significantly reduce the stress concentration at the hole edge, effectively prevent the diaphragm from tearing, and extend its service life.
The RLA shim pack coupling adopts a modular design, with simple assembly and quick maintenance and replacement. Its structural features include:
Single section design, compact structure
The volume is reduced by about 15% compared to similar products
The moment of inertia is reduced by about 20%
Using high-strength stainless steel membrane as the elastic element
The bolted connection adopts an elastic pad structure
Compared with traditional gear couplings, RLA shim pack couplings have several significant advantages:
Maintenance free design: No lubrication required, no worn parts
High precision transmission: zero backlash, able to accurately transmit speed
Strong environmental resistance: resistant to oil and corrosion, suitable for harsh working conditions
Vibration reduction and noise reduction: Stainless steel diaphragm can effectively absorb vibrations
Easy to install: compact structure, light weight, easy to assemble and disassemble
Main application scenarios
Pump equipment: various industrial process pumps, chemical pumps, boiler feed pumps, etc
Fan system: blower, ventilation equipment, compressor drive, etc
Power transmission: transmission system driven by electric motor and internal combustion engine
Heavy machinery: mining machines, coal mills, metallurgical equipment, etc
Turbomachinery: a medium low speed transmission system after deceleration
Industry Applications
Petrochemical industry: used for shaft connections of various pumps and compressors
Power industry: boiler feedwater pump, fan drive system
Metallurgical industry: Transmission of rolling mills and grinding equipment
Water treatment industry: large water pump drive connection
General Machinery: Various Industrial Transmission Systems
Installation precautions
Alignment requirement: RLA single section model cannot compensate for radial deviation, and accurate alignment of the two shafts must be ensured during installation
Bolt tightening: The bolts should be gradually tightened in diagonal order, using a torque wrench to achieve the specified torque
Axial clearance: Maintain appropriate axial clearance to avoid excessive axial force on the diaphragm
Protective measures: It is recommended to install protective covers around the coupling to ensure safety
Key points of maintenance and upkeep
Regular inspection: During the initial operation, all bolts should be checked for tightness and repeated several times to ensure that they are not loose
Diaphragm protection: Solid lubricants such as molybdenum disulfide can be applied between the diaphragms to reduce micro motion wear
Abnormal monitoring: If abnormal sound is found, the machine should be stopped immediately to check the installation accuracy and bolt status
Anti corrosion treatment: When used in corrosive environments, special coating treatment can be applied to the surface of the membrane
Selection considerations
Torque requirement: Select appropriate specifications based on the rated torque and peak torque of the transmission system
Speed range: Ensure that the working speed is within the allowable speed range of the coupling
Shaft diameter matching: When the shaft diameters of the master and slave ends are different, select the coupling model according to the larger shaft diameter
Deviation compensation: Evaluate the axial and angular deviations of the system and select models with appropriate compensation capabilities
Environmental conditions: Consider the impact of environmental factors such as temperature and corrosiveness on materials
Special Needs Solutions
Long distance transmission: RLAD standard double section shim pack coupling can be selected
High speed application: Consider RLHD high-speed shim pack coupling (with a speed of up to 42000rpm)
Space limited: RLAR single shaft sleeve reverse installation design is suitable for situations where the distance between the shaft head is limited
Large and small axis connection: RLAF model is suitable for situations where there is a significant difference in shaft diameter between the two ends
The RLA shim pack coupling has become an ideal choice for medium and low-speed transmission systems due to its simple structure, reliable performance, and easy maintenance. It perfectly combines the high strength of metal couplings and the deviation compensation ability of elastic components, demonstrating significant technological advantages in the field of industrial transmission. With the continuous advancement of technology and the accumulation of application experience, RLA shim pack couplings will play an important role in a wider range of industrial fields, providing efficient and reliable connection solutions for various rotating machinery.
Over the years, with excellent quality, we have been continuously providing many coupling products of various categories and uses complying with multiple standards and a full range of services, from the product selection to final installation and operation, for the industry fields of ferrous metallurgy, nuclear power, gas turbine, wind power, ropeway construction, lifting transportation, general equipment, etc. We strictly comply with quality system requirements and implement the whole process control to become a reliable and trustworthy partner of customers.
URL: https://m.rokee.com/coupling-cases/rla-shim-pack-coupling.html