Core Parameters of Spline Bushing Sizes
Spline bushing sizes are not simply outer diameter numbers; they are like the identification number of a gear, containing three key pieces of information:
Number of Teeth: Determines torque transmission capacity, commonly 6-50 teeth.
Module: Affects tooth profile strength, typically ranging from 0.5-10mm.
Match Tolerance: The interference fit is approximately 0.02-0.05mm.
Typical Misconceptions in Procurement
These misconceptions can turn your procurement into "buying clothes without checking the size":
Misconception 1: Same outer diameter means universal compatibility (Actually, a 1° difference in tooth profile angle will cause jamming)
Misconception 2: Material is more important than size (A 0.1mm dimensional deviation can reduce lifespan by 30%)
Misconception 3: Domestic and imported sizes are consistent (The tooth tip height of some European standard splines differs from domestic products)
Three-Step Precise Measurement Method: This method is like "tailor-made" for the spline:
Tooth Profile Imprinting: Use modeling clay to imprint the tooth profile, avoiding direct measurement deformation.
Three-Needle Measurement: Use a steel needle of a specific diameter to clamp the tooth groove and calculate the module.
Color Inspection: Apply Prussian blue to check the contact area; it must be >70% to meet the standard.
