Coupling & Shaft Adapter Manufacturing

Couplings and shaft adapters are precision-turned parts that join two shafts axially, bridge different diameters and transmit drive torque; they are common in robotics, automation, textile machinery, pumps and encoder assemblies. This category holds 14 families and 135 types: flexible and rigid coupling hubs, shaft adapter hubs, tapered transition hubs, knurled clamp hubs, threaded coupling hubs, hex-drive coupling adapters, reducer shafts, threaded shaft adapters, tapered and stepped hubs, flanged adapters, and hex and knurled shaft couplings. We machine steel, stainless steel, brass and aluminum. Hub bores are held to H7, shaft diameters to h7–h9 and threads to 6g. Since 2009, Ayyıldız Robotics has produced these parts in Düzce, Türkiye on the Goodway SW-20 CNC Swiss-type lathe across the ⌀6–20 mm range; alongside the 135 standard types we also manufacture to your technical drawing. Pricing is by quote — select the part, material and quantity to request one.

Across 135 variants the operation mix is 38× thread turning, 19× hex flat milling, 98× axial bore, 18× taper turning, 20× knurling. Parts run 16–80 mm long; the longest, KAPB-RED-11 at 80 mm, still finishes in a single setup.

Tolerances span 5 classes (6g, H7, h7, h8, h9) and 124 variants carry a DIN or ISO reference. The highest length-to-diameter ratio in the category belongs to KAPB-DMA-02 at L/D 5.3 — the slimmest proportion here, still within reach of a conventional lathe.

Every part is CNC-turned to your drawing — series, small batches and custom turned parts. Send your drawing (PDF/DWG/STEP) for a quote.