Free Mechanical 3D Models

Machined parts, gears, ball bearings, stepper motors and other mechanical components. Every file here is public domain: open it in your browser, then download it and use it for anything.

3490 3D parts · STEP, STL, SketchUp, 3MF, OBJ, glTF, IFC, Rhino and more · public domain

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All mechanical Piping & HVAC 40 Test parts (NIST) 33 Screws & bolts 25 Gears & gearboxes 24 Motors 19 Bearings 19 Belts, pulleys & chains 16 Linear motion 11 Retaining rings & pins 9 Robots & engines 8 Extrusion & framing 6 Washers 6 Shaft collars 6 Shaft couplings 4 Nuts 4 Springs 4

318 3D parts in Mechanical · Clear all

step6202Rotate in 3D
Ball bearing 6202 (sealed)
Ball bearing 6202 (sealed), modeled from published dimensions. Overall 35 x 35 x 11 mm. Key dimensions: bore 15 mm; outside diameter 35 mm; width 11 mm; configuration Recessed dual seals; simplified internal envelope. Bore, outside diameter and width match the cited manufacturer dimensional table. Races and seal profiles are representative. Balls, cage, grease and internal clearances are omitted; this is an installation-envelope model. No load or speed rating is implied by this generic geometry. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
79 KBDetails & download
step6201Rotate in 3D
Ball bearing 6201 (sealed)
Ball bearing 6201 (sealed), modeled from published dimensions. Overall 32 x 32 x 10 mm. Key dimensions: bore 12 mm; outside diameter 32 mm; width 10 mm; configuration Recessed dual seals; simplified internal envelope. Bore, outside diameter and width match the cited manufacturer dimensional table. Races and seal profiles are representative. Balls, cage, grease and internal clearances are omitted; this is an installation-envelope model. No load or speed rating is implied by this generic geometry. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
79 KBDetails & download
step6200Rotate in 3D
Ball bearing 6200 (sealed)
Ball bearing 6200 (sealed), modeled from published dimensions. Overall 30 x 30 x 9 mm. Key dimensions: bore 10 mm; outside diameter 30 mm; width 9 mm; configuration Recessed dual seals; simplified internal envelope. Bore, outside diameter and width match the cited manufacturer dimensional table. Races and seal profiles are representative. Balls, cage, grease and internal clearances are omitted; this is an installation-envelope model. No load or speed rating is implied by this generic geometry. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
79 KBDetails & download
step608Rotate in 3D
Ball bearing 608 (sealed)
Ball bearing 608 (sealed), modeled from published dimensions. Overall 22 x 22 x 7 mm. Key dimensions: bore 8 mm; outside diameter 22 mm; width 7 mm; configuration Recessed dual seals; simplified internal envelope. Bore, outside diameter and width match the cited manufacturer dimensional table. Races and seal profiles are representative. Balls, cage, grease and internal clearances are omitted; this is an installation-envelope model. No load or speed rating is implied by this generic geometry. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
79 KBDetails & download
step6005Rotate in 3D
Ball bearing 6005 (sealed)
Ball bearing 6005 (sealed), modeled from published dimensions. Overall 47 x 47 x 12 mm. Key dimensions: bore 25 mm; outside diameter 47 mm; width 12 mm; configuration Recessed dual seals; simplified internal envelope. Bore, outside diameter and width match the cited manufacturer dimensional table. Races and seal profiles are representative. Balls, cage, grease and internal clearances are omitted; this is an installation-envelope model. No load or speed rating is implied by this generic geometry. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
79 KBDetails & download
step6004Rotate in 3D
Ball bearing 6004 (sealed)
Ball bearing 6004 (sealed), modeled from published dimensions. Overall 42 x 42 x 12 mm. Key dimensions: bore 20 mm; outside diameter 42 mm; width 12 mm; configuration Recessed dual seals; simplified internal envelope. Bore, outside diameter and width match the cited manufacturer dimensional table. Races and seal profiles are representative. Balls, cage, grease and internal clearances are omitted; this is an installation-envelope model. No load or speed rating is implied by this generic geometry. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
79 KBDetails & download
step6003Rotate in 3D
Ball bearing 6003 (sealed)
Ball bearing 6003 (sealed), modeled from published dimensions. Overall 35 x 35 x 10 mm. Key dimensions: bore 17 mm; outside diameter 35 mm; width 10 mm; configuration Recessed dual seals; simplified internal envelope. Bore, outside diameter and width match the cited manufacturer dimensional table. Races and seal profiles are representative. Balls, cage, grease and internal clearances are omitted; this is an installation-envelope model. No load or speed rating is implied by this generic geometry. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
79 KBDetails & download
step6002Rotate in 3D
Ball bearing 6002 (sealed)
Ball bearing 6002 (sealed), modeled from published dimensions. Overall 32 x 32 x 9 mm. Key dimensions: bore 15 mm; outside diameter 32 mm; width 9 mm; configuration Recessed dual seals; simplified internal envelope. Bore, outside diameter and width match the cited manufacturer dimensional table. Races and seal profiles are representative. Balls, cage, grease and internal clearances are omitted; this is an installation-envelope model. No load or speed rating is implied by this generic geometry. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
78 KBDetails & download
step6001Rotate in 3D
Ball bearing 6001 (sealed)
Ball bearing 6001 (sealed), modeled from published dimensions. Overall 28 x 28 x 8 mm. Key dimensions: bore 12 mm; outside diameter 28 mm; width 8 mm; configuration Recessed dual seals; simplified internal envelope. Bore, outside diameter and width match the cited manufacturer dimensional table. Races and seal profiles are representative. Balls, cage, grease and internal clearances are omitted; this is an installation-envelope model. No load or speed rating is implied by this generic geometry. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
79 KBDetails & download
step6000Rotate in 3D
Ball bearing 6000 (sealed)
Ball bearing 6000 (sealed), modeled from published dimensions. Overall 26 x 26 x 8 mm. Key dimensions: bore 10 mm; outside diameter 26 mm; width 8 mm; configuration Recessed dual seals; simplified internal envelope. Bore, outside diameter and width match the cited manufacturer dimensional table. Races and seal profiles are representative. Balls, cage, grease and internal clearances are omitted; this is an installation-envelope model. No load or speed rating is implied by this generic geometry. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
79 KBDetails & download
stepNEMA 23Rotate in 3D
NEMA 23 stepper motor 23HS22-2804S
NEMA 23 stepper motor 23HS22-2804S, modeled from published dimensions. Overall 57.3 x 59.3 x 77 mm. Key dimensions: drawing reference 23HS22-2804S; body width max 57.3 mm; body length max 56 mm; mount hole spacing XY 47.1 mm; mount hole diameter 5.2 mm; mount hole type 5.2 mm through clearance; shaft diameter 6.4 mm; shaft projection from mount face 21 mm; shaft flat dimension 5.9 mm; shaft flat length 15 mm; locating boss diameter 38.1 mm; locating boss height 1.6 mm. Mounting pattern, nominal shaft/flat/boss geometry and maximum body envelope follow the cited manufacturer drawing. Z=0 is the mounting face. Internal motor construction, long cable, markings and connector contacts are omitted. Case seams, fastener details and connector housing are representative. Mounting taps are shown as nominal cylindrical envelopes. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
310 KBDetails & download
stepNEMA 17Rotate in 3D
NEMA 17 stepper motor 17HS15-1504S
NEMA 17 stepper motor 17HS15-1504S, modeled from published dimensions. Overall 42.3 x 48.8 x 62.8 mm. Key dimensions: drawing reference 17HS15-1504S; body width max 42.3 mm; body length max 39.3 mm; mount hole spacing XY 31 mm; mount hole diameter 3 mm; mount hole type M3 nominal threaded envelope, depth 4.5; shaft diameter 5 mm; shaft projection from mount face 23.5 mm; shaft flat dimension 4.5 mm; shaft flat length 18 mm; locating boss diameter 22 mm; locating boss height 2 mm. Mounting pattern, nominal shaft/flat/boss geometry and maximum body envelope follow the cited manufacturer drawing. Z=0 is the mounting face. Internal motor construction, long cable, markings and connector contacts are omitted. Case seams, fastener details and connector housing are representative. Mounting taps are shown as nominal cylindrical envelopes. Exact solid STEP geometry in millimeters, opens in any CAD system. Export to STL, OBJ, GLB and other formats from the viewer. Nominal dimensions for layout, fit checks and visualization; they do not establish a manufacturing tolerance class, load rating or standards certification. Original Innerscene model, released CC0.
267 KBDetails & download
3mfRotate in 3D
Spur gear with hub
Spur gear with hub: a 3D Manufacturing (.3mf) sample file from the Innerscene 3D Viewer's Samples menu. Source: Authored by Innerscene (public/samples/SOURCES.md). License: Innerscene.
23 KBDetails & download
3dsRotate in 3D
Spur gear
Spur gear: a 3D Studio (.3ds) sample file from the Innerscene 3D Viewer's Samples menu. Source: Authored by Innerscene (public/samples/SOURCES.md). License: Innerscene.
45 KBDetails & download
stlRotate in 3D
Spur gear, 24 teeth (binary)
Spur gear, 24 teeth (binary): a Stereolithography (.stl) sample file from the Innerscene 3D Viewer's Samples menu. Source: Authored by Innerscene (public/samples/SOURCES.md). License: Innerscene.
131 KBDetails & download
gltfRotate in 3D
Spur gear (glTF)
Spur gear (glTF): a glTF JSON (.gltf) sample file from the Innerscene 3D Viewer's Samples menu. Source: Authored by Innerscene (public/samples/SOURCES.md). License: Innerscene.
296 KBDetails & download
3dmRotate in 3D
Spur gear with outline curve
Spur gear with outline curve: a Rhino 3D Model (.3dm) sample file from the Innerscene 3D Viewer's Samples menu. Source: Authored by Innerscene (public/samples/SOURCES.md). License: Innerscene.
53 KBDetails & download
pvzRotate in 3D
Heart ring
Heart ring: a PTC Creo View (.pvz) sample file from the Innerscene 3D Viewer's Samples menu. Source: Thingiverse 140729 by zimirken, written to this format by Innerscene. License: CC0-1.0.
58 KBDetails & download
pvzRotate in 3D
NIST test part FTC 06
NIST test part FTC 06: a PTC Creo View (.pvz) sample file from the Innerscene 3D Viewer's Samples menu. Source: NIST MBE PMI geometry, written to this format by Innerscene (public/samples/SOURCES.md). License: US government work.
147 KBDetails & download
3dxmlRotate in 3D
NIST test part CTC 02
NIST test part CTC 02: a 3D XML (Dassault) (.3dxml) sample file from the Innerscene 3D Viewer's Samples menu. Source: NIST MBE PMI geometry, written to this format by Innerscene (public/samples/SOURCES.md). License: US government work.
1.7 MBDetails & download
eprtRotate in 3D
NIST test part FTC 10
NIST test part FTC 10: a SolidWorks eDrawings (.eprt) sample file from the Innerscene 3D Viewer's Samples menu. Source: NIST MBE PMI geometry, written to this format by Innerscene (public/samples/SOURCES.md). License: US government work.
91 KBDetails & download
easmRotate in 3D
NIST MTC box assembly
NIST MTC box assembly: a SolidWorks eDrawings (.easm) sample file from the Innerscene 3D Viewer's Samples menu. Source: NIST MBE PMI geometry, written to this format by Innerscene (public/samples/SOURCES.md). License: US government work.
2.4 MBDetails & download
sevRotate in 3D
Heart ring
Heart ring: a Solid Edge Viewer (.sev) sample file from the Innerscene 3D Viewer's Samples menu. Source: Thingiverse 140729 by zimirken, written to this format by Innerscene. License: CC0-1.0.
56 KBDetails & download
sevRotate in 3D
NIST MTC box assembly
NIST MTC box assembly: a Solid Edge Viewer (.sev) sample file from the Innerscene 3D Viewer's Samples menu. Source: NIST MBE PMI geometry, written to this format by Innerscene (public/samples/SOURCES.md). License: US government work.
665 KBDetails & download

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