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steve/deep-groove-ball-bearing

Deep groove ball bearing (shielded), ISO 15 sizes 623 to 6204.

v1.0.0 STEVE MIT 2
Open in STEVE
Isometric
part.py 46 lines · Python · STEVE runtime · checked
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1"""Deep groove ball bearing, shielded (2Z), ISO 15 boundary dimensions. Envelope: inner and outer rings joined by
2recessed shields (one solid), centred on the origin with its axis along Z."""
3from steve import Model
4
5designation = "608" # Bearing designation
6
7# designation: (bore d, outside diameter D, width B)
8BEARINGS = {
9 '623': (3, 10, 4),
10 '624': (4, 13, 5),
11 '625': (5, 16, 5),
12 '626': (6, 19, 6),
13 '608': (8, 22, 7),
14 '688': (8, 16, 5),
15 '6000': (10, 26, 8),
16 '6001': (12, 28, 8),
17 '6002': (15, 32, 9),
18 '6003': (17, 35, 10),
19 '6004': (20, 42, 12),
20 '6200': (10, 30, 9),
21 '6201': (12, 32, 10),
22 '6202': (15, 35, 11),
23 '6203': (17, 40, 12),
24 '6204': (20, 47, 14),
25}
26d, D, B = BEARINGS[designation]
27ring = (D - d) * 0.22 # radial thickness of each ring's face
28recess = min(0.4, B * 0.06)
29
30model = Model()
31with model.sketch("rings", on="XY", name="Rings") as sk:
32 sk.circle("outer", (0, 0), D / 2)
33 sk.circle("bore", (0, 0), d / 2)
34model.extrude("body", "rings", distance=B, both=True) # both: B in all, centred on XY
35model.plane("face_top", on="XY", offset=B / 2, name="Top face")
36with model.sketch("shield_top", on="face_top", name="Top shield") as sk:
37 sk.circle("out", (0, 0), D / 2 - ring)
38 sk.circle("inn", (0, 0), d / 2 + ring)
39model.extrude("recess_top", "shield_top", distance=-recess, op="cut")
40model.plane("face_bottom", on="XY", offset=-B / 2, name="Bottom face")
41with model.sketch("shield_bottom", on="face_bottom", name="Bottom shield") as sk:
42 sk.circle("out", (0, 0), D / 2 - ring)
43 sk.circle("inn", (0, 0), d / 2 + ring)
44model.extrude("recess_bottom", "shield_bottom", distance=recess, op="cut")
45result = model.result()
46

Deep groove ball bearing, shielded (2Z), ISO 15 boundary dimensions. Envelope: inner and outer rings joined by recessed shields (one solid), centred on the origin with its axis along Z. Dimensions from STEVE's standard-part tables (nominal values of the standard). Envelope geometry: no modelled thread.

  1. 2.0.0 Latest Compare with 1.1.0

    Face recesses removed: the model is now the exact d x D x B envelope with flush shields and seals (the recess depths and ring face widths came from no catalogue).

  2. 1.1.0 Compare with 1.0.0

    Materials and finishes: each part is made of its standard's engineering material, with its usual finish.

  3. 1.0.0
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