Pin Type Couplings

Pin type coupling is a type of mechanical transmission device that connects shafts through pin components, mainly divided into two categories: elastic pin type and rigid pin type. Its core function is to achieve efficient torque transmission while allowing for a certain degree of axial deviation.

The pin type coupling connects the half coupling of the driving shaft and the driven shaft through evenly distributed pin shafts around the circumference. When the driving shaft rotates, torque is transmitted to the driven shaft through the pin shaft. In the elastic pin coupling, elastic elements (such as rubber sleeves, nylon column pins, etc.) can absorb vibrations and compensate for certain axial, radial, and angular deviations.

Bushed pin type coupling

1. Structural features: Using a column pin with a rubber elastic sleeve on one end, installed in the flange holes of the two halves of the coupling
   

2. Performance parameters: Operating temperature of -20 to+80 ℃, transmitting nominal torque of 40 to 20000 N · m
   

3. Advantages: Simple structure, easy installation, and easy replacement of elastic sleeves
   

4. Limitations: The buffering and shock absorption performance is average, and the compensation displacement is small

elastic pin coupling

1. Core component: Column pin made of nylon material (usually nylon 6)
   

2. Technical standard: Complies with GB5014-85, nominal torque 160-160000N · m
   

3. Compensation capability: radial 0.15-0.25mm, angular 0.5 °
   

4. Features: Allow for significant axial movement, with buffering, shock absorption, and wear resistance properties

Elastic column pin toothed coupling

1. Innovative design: Combining the advantages of toothed couplings and elastic column pins
   

2. Typical model: ZLL type with brake wheel structure, nominal torque 250-31500N · m
   

3. Advantages: Self lubricating nylon column pin, easy maintenance, long service life

characteristics

1. Deviation compensation capability:
   Angular compensation up to 1.5 °
   Radial compensation amount 0.15-0.6mm
   Especially suitable for working conditions such as foundation settlement and thermal expansion

2. Vibration control characteristics:
   Elastic components effectively absorb impacts and vibrations
   Reduce transmission system noise (especially significant for TL type)

3. Maintaining advantages:
   Elastic element replacement does not require moving the coupling body
   Nylon column pin design without lubrication (LZ type)

4. Economic performance:
   Simple structure and low manufacturing cost
   Long life design reduces replacement frequency

5. Environmental adaptability:
   Corrosion resistant materials are optional (such as stainless steel components)
   Wide temperature range working capability (special models from -40 ℃ to+120 ℃)

Application scenarios

1. General mechanical equipment:
   Connection between motor and pump/fan
   Suitable for medium speed transmission with a speed ≤ 1500rpm

2. Lifting and transportation machinery:
   Crane walking mechanism
   Conveyor belt drive device (note not applicable to lifting mechanism)

3. Metallurgical equipment:
   Rolling mill auxiliary transmission system
   Roller conveyor transmission of heat treatment line

4. Petrochemical plant:
   Centrifugal pump drive connection
   Compressor auxiliary system

5. Special precautions:
   Not recommended for use in lifting machinery lifting mechanisms
   Enhanced design should be selected for strong impact conditions
   When the installation accuracy is low, models with greater compensation capability should be considered