Typical F Form
Double engagement (F flex-flex) for parallel and angular misalignment
Single engagement (FFR flex-rigid) accommodates angular misalignment only and it is best for floating shaft applications
Sector common flange bolt patterns
FHD Style standard for sizes 10 as a result of 30 (other sizes readily available on request)
Rigid-Rigid FRR Variety
Built for connecting two rigidly mounted shafts with no misalignment capability
Alloy Rigid-Rigid FARR Form
Longer piloted hubs sustain rigidity and concentricity
Utilized for cantilevered loads for instance 기어 boxes that hang off conveyor systems
Alloy steel obtainable for better strength (FARR)
Mill 모터 FMM Style
First hub intended with longer universal hub on one particular finish to accommodate straight or tapered shafts
Second hub 
bored to consumer specifications
Regular layout accommodates AISE Mill Motor frame sizes
Sleeves and 2nd hub are conventional
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