Library › Hardware › Leaf hub collars: Ø12 and Ø18 bore, M3 grub

collar Ø28 × 5, Ø18 bore, M3 tapped radial hole (Ø2.5)

collar Ø28 × 5, Ø18 bore, M3 tapped radial hole (Ø2.5): two per piston leaf, either side of its hub on the tube rod

Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.

STEP STL free, CC BY 4.0 (credit "Xem Studio")

Dimensions

collar	piston
od_mm	28
bore_mm	18
h_mm	5

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From the full sheet

Leaf hub collars: Ø12 and Ø18 bore, M3 grub: every size, notes, mating features and sources. How is a flexure leaf's hub held on its rod?

Other sizes

collar Ø20 × 5, Ø12 bore, M3 tapped radial hole (Ø2.5)