Keyway machining is a core internal slotting operation in mechanical and automotive manufacturing. Varad Engineering supports keyway broaching requirements through dedicated tooling manufacture—including key broaches with and without chamfer up to 1500 mm in length—and comprehensive contract broaching services at its facility in Mhalunge, Chakan, Pune.
In mechanical power transmission, internal keyways are cut into the bores of rotating components such as gears, pulleys, sprockets, couplings, and hubs. A drive key is fitted into the mating shaft keyseat, enabling positive torque transmission without rotational slippage.
Broaching is the preferred method for cutting internal keyways because it provides tight dimensional tolerance, exact parallelism across the slot length, and rapid cycle times compared to single-point slotting or EDM wire-cutting.
Particularly effective for high-volume production where component deburring adds costly manual labor.
Standard rectangular and square internal slot profiles machined according to standard engineering specifications.
Not all manufacturing units have in-house broaching machines or specialized broach tool maintenance facilities. For customers requiring batch keyway broaching, Varad Engineering provides complete contract broaching services at its Mhalunge, Chakan plant.
Customers supply pre-bored components; our team performs internal keyway broaching using calibrated broach tooling and inspection equipment, delivering verified parts ready for downstream assembly.
Keyway dimensions—including slot width, depth, corner radius, and chamfer angle—are verified with calibrated metrology tools at our plant:
Electronica PP 300 H (10×, 20×, 30×)
Visual measurement of keyway width, depth, and chamfer edge break geometry on sample parts and cutting tooling.
63 Slips · Grade A Accuracy
Precision go/no-go gauging of internal keyway slot widths to ensure proper key fit.
FIE Group Model RASN
Checking hardness values of tooling to ensure cutting edge stability during production strokes.