Library › Hardware › Bearings, rails & motion ·
Thrust ball bearings 51200 and 51300 series (51204, 51205, 51206, 51305, 51306 and more): bore, OD, height, r, housing washer bore + 11 ring-envelope STEP/STL files
What are the dimensions of a 51205, 51206, 51305 or 51306 thrust ball bearing: bore, outside diameter, height and housing washer bore? · Standard part · basis: NSK values via TFL Bearing (d, D, T, r min, d1, D1) checked on d, D, T against Emerson Bearing's 51200 and 51300 lists; NSK's 51205 page and McMaster-Carr linked
Also called: 51204 thrust bearing dimensions, 51205 thrust bearing dimensions, 51206 thrust bearing dimensions, 51207 thrust bearing dimensions, 51208 thrust bearing dimensions, 51210 thrust bearing dimensions, 51305 thrust bearing dimensions, 51306 thrust bearing dimensions, 51308 thrust bearing dimensions, 51205 25x47x15, 51206 30x52x16, 51305 25x52x18, 51306 30x60x21, thrust ball bearing stl, thrust ball be
Exact dimensions. True size, with no tolerance added.
- sizes
- 63 in table
Notes
- A single-direction thrust ball bearing carries axial load in one direction only: a shaft washer (bore d, on the shaft) and a housing washer (bore D1, sits in the housing), with a ball and cage set between them. It is what sits under a lead screw, a vertical shaft or a hand-wheel stack. 512xx is the light series (12 dimension series) and 513xx the medium series; the 511xx series is on its own page.
- Numbers: the NSK values as republished by TFL Bearing (d, D, T, r min, d1, D1 for 51200 to 51272 and 51305 to 51340), with Emerson Bearing's 51200 and 51300 lists as the independent check on d, D and T (every Emerson row agrees; Emerson has no 51338 and no rows above 51230 in the 51200 series). NSK's own 51205 page gives the same row (25, 47, 15, r 0.6, d1 47, D1 27).
- d1 equals D on all rows up to 51224 and 51320; from 51226 (51322 in the 513 series) the shaft washer is a little smaller than the housing washer (marked X in the NSK list), e.g. 51226: d1 187 vs D 190. The envelope files use D as the OD.
- Files: 11 ring envelopes (51204, 51205, 51206, 51208, 51210, 51212, 51305, 51306, 51308, 51310, 51312): one solid ring, bore d, OD D, height T, corners rounded at r min. Washers, balls and cage are not drawn.
- Left out: limiting speeds and load ratings (the makers differ), double-direction 522xx / 523xx, spherical-seat 53xxx, 514xx and above, and the mass column.
Thrust ball bearings 51200 and 51300 series (51204, 51205, 51206… size chart
| bearing | bore d (shaft washer), mm | OD D, mm | height T, mm | r min, mm | shaft washer OD d1, mm | housing washer bore D1, mm | source |
|---|---|---|---|---|---|---|---|
| 51200 | 10 | 26 | 11 | 0.6 | 26 | 12 | NSK (TFL) + Emerson |
| 51201 | 12 | 28 | 11 | 0.6 | 28 | 14 | NSK (TFL) + Emerson |
| 51202 | 15 | 32 | 12 | 0.6 | 32 | 17 | NSK (TFL) + Emerson |
| 51203 | 17 | 35 | 12 | 0.6 | 35 | 19 | NSK (TFL) + Emerson |
| 51204 | 20 | 40 | 14 | 0.6 | 40 | 22 | NSK (TFL) + Emerson |
| 51205 | 25 | 47 | 15 | 0.6 | 47 | 27 | NSK (TFL) + Emerson |
| 51206 | 30 | 52 | 16 | 0.6 | 52 | 32 | NSK (TFL) + Emerson |
| 51207 | 35 | 62 | 18 | 1 | 62 | 37 | NSK (TFL) + Emerson |
| 51208 | 40 | 68 | 19 | 1 | 68 | 42 | NSK (TFL) + Emerson |
| 51209 | 45 | 73 | 20 | 1 | 73 | 47 | NSK (TFL) + Emerson |
| 51210 | 50 | 78 | 22 | 1 | 78 | 52 | NSK (TFL) + Emerson |
| 51211 | 55 | 90 | 25 | 1 | 90 | 57 | NSK (TFL) + Emerson |
| 51212 | 60 | 95 | 26 | 1 | 95 | 62 | NSK (TFL) + Emerson |
| 51213 | 65 | 100 | 27 | 1 | 100 | 67 | NSK (TFL) + Emerson |
| 51214 | 70 | 105 | 27 | 1 | 105 | 72 | NSK (TFL) + Emerson |
| 51215 | 75 | 110 | 27 | 1 | 110 | 77 | NSK (TFL) + Emerson |
| 51216 | 80 | 115 | 28 | 1 | 115 | 82 | NSK (TFL) + Emerson |
| 51217 | 85 | 125 | 31 | 1 | 125 | 88 | NSK (TFL) + Emerson |
| 51218 | 90 | 135 | 35 | 1.1 | 135 | 93 | NSK (TFL) + Emerson |
| 51220 | 100 | 150 | 38 | 1.1 | 150 | 103 | NSK (TFL) + Emerson |
| 51222 | 110 | 160 | 38 | 1.1 | 160 | 113 | NSK (TFL) + Emerson |
| 51224 | 120 | 170 | 39 | 1.1 | 170 | 123 | NSK (TFL) + Emerson |
| 51226 | 130 | 190 | 45 | 1.5 | 187 | 133 | NSK (TFL) + Emerson |
| 51228 | 140 | 200 | 46 | 1.5 | 197 | 143 | NSK (TFL) + Emerson |
| 51230 | 150 | 215 | 50 | 1.5 | 212 | 153 | NSK (TFL) + Emerson |
| 51232 | 160 | 225 | 51 | 1.5 | 222 | 163 | NSK (TFL) |
| 51234 | 170 | 240 | 55 | 1.5 | 237 | 173 | NSK (TFL) |
| 51236 | 180 | 250 | 56 | 1.5 | 247 | 183 | NSK (TFL) |
| 51238 | 190 | 270 | 62 | 2 | 267 | 194 | NSK (TFL) |
| 51240 | 200 | 280 | 62 | 2 | 277 | 204 | NSK (TFL) |
| 51244 | 220 | 300 | 63 | 2 | 297 | 224 | NSK (TFL) |
| 51248 | 240 | 340 | 78 | 2.1 | 335 | 244 | NSK (TFL) |
| 51252 | 260 | 360 | 79 | 2.1 | 355 | 264 | NSK (TFL) |
| 51256 | 280 | 380 | 80 | 2.1 | 375 | 284 | NSK (TFL) |
| 51260 | 300 | 420 | 95 | 3 | 415 | 304 | NSK (TFL) |
| 51264 | 320 | 440 | 95 | 3 | 435 | 325 | NSK (TFL) |
| 51268 | 340 | 460 | 96 | 3 | 455 | 345 | NSK (TFL) |
| 51272 | 360 | 500 | 110 | 4 | 495 | 365 | NSK (TFL) |
| 51305 | 25 | 52 | 18 | 1 | 52 | 27 | NSK (TFL) + Emerson |
| 51306 | 30 | 60 | 21 | 1 | 60 | 32 | NSK (TFL) + Emerson |
| 51307 | 35 | 68 | 24 | 1 | 68 | 37 | NSK (TFL) + Emerson |
| 51308 | 40 | 78 | 26 | 1 | 78 | 42 | NSK (TFL) + Emerson |
| 51309 | 45 | 85 | 28 | 1 | 85 | 47 | NSK (TFL) + Emerson |
| 51310 | 50 | 95 | 31 | 1.1 | 95 | 52 | NSK (TFL) + Emerson |
| 51311 | 55 | 105 | 35 | 1.1 | 105 | 57 | NSK (TFL) + Emerson |
| 51312 | 60 | 110 | 35 | 1.1 | 110 | 62 | NSK (TFL) + Emerson |
| 51313 | 65 | 115 | 36 | 1.1 | 115 | 67 | NSK (TFL) + Emerson |
| 51314 | 70 | 125 | 40 | 1.1 | 125 | 72 | NSK (TFL) + Emerson |
| 51315 | 75 | 135 | 44 | 1.5 | 135 | 77 | NSK (TFL) + Emerson |
| 51316 | 80 | 140 | 44 | 1.5 | 140 | 82 | NSK (TFL) + Emerson |
| 51317 | 85 | 150 | 49 | 1.5 | 150 | 88 | NSK (TFL) + Emerson |
| 51318 | 90 | 155 | 50 | 1.5 | 155 | 93 | NSK (TFL) + Emerson |
| 51320 | 100 | 170 | 55 | 1.5 | 170 | 103 | NSK (TFL) + Emerson |
| 51322 | 110 | 190 | 63 | 2 | 187 | 113 | NSK (TFL) + Emerson |
| 51324 | 120 | 210 | 70 | 2.1 | 205 | 123 | NSK (TFL) + Emerson |
| 51326 | 130 | 225 | 75 | 2.1 | 220 | 134 | NSK (TFL) + Emerson |
| 51328 | 140 | 240 | 80 | 2.1 | 235 | 144 | NSK (TFL) + Emerson |
| 51330 | 150 | 250 | 80 | 2.1 | 245 | 154 | NSK (TFL) + Emerson |
| 51332 | 160 | 270 | 87 | 3 | 265 | 164 | NSK (TFL) + Emerson |
| 51334 | 170 | 280 | 87 | 3 | 275 | 174 | NSK (TFL) + Emerson |
| 51336 | 180 | 300 | 95 | 3 | 295 | 184 | NSK (TFL) + Emerson |
| 51338 | 190 | 320 | 105 | 4 | 315 | 195 | NSK (TFL) |
| 51340 | 200 | 340 | 110 | 4 | 335 | 205 | NSK (TFL) + Emerson |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| TFL Bearing (NSK designations) | Thrust ball bearings of the series 512 and 513: d, D, T, r min, shaft washer d1, housing washer bore D1 (NSK values) | web | Publisher's page; dimensions are facts |
| TFL Bearing (NSK designations) | Thrust ball bearings of the series 513: d, D, T, r min, d1, D1 (NSK values) | web | Publisher's page; dimensions are facts |
| Emerson Bearing | 51200 series light-duty ball thrust bearings: d, D, T, loads, speeds | web | Publisher's page; dimensions are facts |
| Emerson Bearing | 51300 series medium-duty ball thrust bearings: d, D, T, loads, speeds | web | Publisher's page; dimensions are facts |
| NSK | 51205 single-direction thrust ball bearing: d 25, D 47, T 15, r 0.6, d1 47, D1 27 (page with CAD tab) | web | Publisher's page; dimensions are facts |
| McMaster-Carr | Open thrust ball bearings (free STEP/IGES per part, for your own design use; no redistribution) | STEP, IGES, PDF | McMaster-Carr site terms: personal design use, no redistribution verify |
Free files
★ Free files 11 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| 51204-thrust-ball-bearing-envelope-20x40x14 | 51204 thrust ball bearing ring envelope: bore Ø20, OD Ø40, height 14; one solid ring, corners rounded at r min 0.6; the housing washer bore Ø22 and the shaft washer OD Ø40 are in the table, not drawn (washer thicknesses are not in the tables read); no balls or cage; nominal values | STEP · STL |
| 51205-thrust-ball-bearing-envelope-25x47x15 | 51205 thrust ball bearing ring envelope: bore Ø25, OD Ø47, height 15; one solid ring, corners rounded at r min 0.6; the housing washer bore Ø27 and the shaft washer OD Ø47 are in the table, not drawn (washer thicknesses are not in the tables read); no balls or cage; nominal values | STEP · STL |
| 51206-thrust-ball-bearing-envelope-30x52x16 | 51206 thrust ball bearing ring envelope: bore Ø30, OD Ø52, height 16; one solid ring, corners rounded at r min 0.6; the housing washer bore Ø32 and the shaft washer OD Ø52 are in the table, not drawn (washer thicknesses are not in the tables read); no balls or cage; nominal values | STEP · STL |
| 51208-thrust-ball-bearing-envelope-40x68x19 | 51208 thrust ball bearing ring envelope: bore Ø40, OD Ø68, height 19; one solid ring, corners rounded at r min 1; the housing washer bore Ø42 and the shaft washer OD Ø68 are in the table, not drawn (washer thicknesses are not in the tables read); no balls or cage; nominal values | STEP · STL |
| 51210-thrust-ball-bearing-envelope-50x78x22 | 51210 thrust ball bearing ring envelope: bore Ø50, OD Ø78, height 22; one solid ring, corners rounded at r min 1; the housing washer bore Ø52 and the shaft washer OD Ø78 are in the table, not drawn (washer thicknesses are not in the tables read); no balls or cage; nominal values | STEP · STL |
| 51212-thrust-ball-bearing-envelope-60x95x26 | 51212 thrust ball bearing ring envelope: bore Ø60, OD Ø95, height 26; one solid ring, corners rounded at r min 1; the housing washer bore Ø62 and the shaft washer OD Ø95 are in the table, not drawn (washer thicknesses are not in the tables read); no balls or cage; nominal values | STEP · STL |
| 51305-thrust-ball-bearing-envelope-25x52x18 | 51305 thrust ball bearing ring envelope: bore Ø25, OD Ø52, height 18; one solid ring, corners rounded at r min 1; the housing washer bore Ø27 and the shaft washer OD Ø52 are in the table, not drawn (washer thicknesses are not in the tables read); no balls or cage; nominal values | STEP · STL |
| 51306-thrust-ball-bearing-envelope-30x60x21 | 51306 thrust ball bearing ring envelope: bore Ø30, OD Ø60, height 21; one solid ring, corners rounded at r min 1; the housing washer bore Ø32 and the shaft washer OD Ø60 are in the table, not drawn (washer thicknesses are not in the tables read); no balls or cage; nominal values | STEP · STL |
| 51308-thrust-ball-bearing-envelope-40x78x26 | 51308 thrust ball bearing ring envelope: bore Ø40, OD Ø78, height 26; one solid ring, corners rounded at r min 1; the housing washer bore Ø42 and the shaft washer OD Ø78 are in the table, not drawn (washer thicknesses are not in the tables read); no balls or cage; nominal values | STEP · STL |
| 51310-thrust-ball-bearing-envelope-50x95x31 | 51310 thrust ball bearing ring envelope: bore Ø50, OD Ø95, height 31; one solid ring, corners rounded at r min 1.1; the housing washer bore Ø52 and the shaft washer OD Ø95 are in the table, not drawn (washer thicknesses are not in the tables read); no balls or cage; nominal values | STEP · STL |
| 51312-thrust-ball-bearing-envelope-60x110x35 | 51312 thrust ball bearing ring envelope: bore Ø60, OD Ø110, height 35; one solid ring, corners rounded at r min 1.1; the housing washer bore Ø62 and the shaft washer OD Ø110 are in the table, not drawn (washer thicknesses are not in the tables read); no balls or cage; nominal values | STEP · STL |
https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.Plain text: sheet.txt · JSON: /api/geometry?object=thrust-ball-bearings-51200-51300-series

Fits with







Questions
What are the dimensions of a 51205 thrust bearing?
Bore 25, OD 47, height 15 mm, r min 0.6; shaft washer OD 47 and housing washer bore 27 mm (NSK).
What are the dimensions of a 51206 thrust bearing?
Bore 30, OD 52, height 16 mm; housing washer bore 32 mm.
What are the dimensions of a 51305 thrust bearing?
Bore 25, OD 52, height 18 mm, r min 1; housing washer bore 27 mm.
What is the difference between 51205 and 51305?
Same 25 mm bore; the 513 series is the heavier one: 52 mm OD and 18 mm high instead of 47 and 15.
What is the housing washer bore of a 51204?
22 mm: the housing washer's bore is 2 mm larger than the 20 mm shaft washer bore, so it floats clear of the shaft.