Keyway and spline are mechanical components used to transmit torque between shafts and rotating elements like gears, pulleys, and couplings.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Fit Class | ANSI B92.1, DIN 5480, ISO 4156 | |
| Keyway Types | Square, rectangular, Woodruff, Gib-head | |
| Module/Pitch | 0.5-10 mm | |
| Spline Types | Involute, straight-sided, serrated | |
| Pressure Angle | 30°, 37.5°, 45° | |
| Tolerance Grade | IT5-IT9 |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
A mechanical component that transmits rotational motion and torque within damper/louver systems.
The central rotating component of an infeed starwheel that provides mounting points for starwheel arms and facilitates smooth rotation.
A mechanical component that serves as both a mounting interface and power transmission element within a digging assembly.
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Keyways use a single key for torque transmission with fixed positioning, while splines use multiple interlocking teeth that allow axial movement and distribute loads across more surface area.
Use splines for higher torque capacity, applications requiring axial movement (sliding connections), or when precise angular positioning is needed. Keyways are simpler and cost-effective for fixed connections with moderate loads.
Common failures include wear, fretting corrosion, shear failure of keys, tooth deformation in splines, and improper fit leading to backlash or vibration.
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