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Half-section (cut along the axis, flat face down) of a Ø40 × 160 mm shaft with the DIN 471 ring groove

Half-section (cut along the axis, flat face down) of a Ø40 × 160 mm shaft with the DIN 471 ring groove: groove Ø37.5 (d2) × 1.85 mm wide (m), groove centre 60 mm from one end; nominal values, no chamfers; length and groove position are an example, d1, d2 and m are the standard's

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

shaft d1, mm40
ring thickness s, mm1.75
ring free inner Ø d3, mm36.5
lug width a (max), mm6
ring width b (approx), mm4.4
lug hole d5 (min), mm2.5
groove Ø d2, mm37.5
groove width m, mm1.85
groove depth t, mm1.25
edge margin n (min), mm3.8
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From the full sheet

Retaining rings DIN 471 (external, for shafts): ring dimensions and groove diameter d2 × width m, 3 to 100 mm: every size, notes, mating features and sources. What groove diameter and width does a DIN 471 external retaining ring (circlip) need on a shaft, and what are the ring's thickness and lug sizes?

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