Kaydon® and Silverthin™ interchange
Direct SlewPro and SlimPro equivalents for Kaydon and Silverthin slewing ring bearings and thin section bearings: same dimensions, same mounting. Using another brand? See all crossovers or send us a drawing or part number.
Kaydon Reali-Slim® and Silverthin™ → SlimPro
Every Kaydon Reali-Slim and Silverthin part number has a SlimPro equivalent: add SP- in front of the number. Each brand is served from its own published catalog (1662 Kaydon-interchange sizes, 477 Silverthin-interchange sizes), because the two catalogs differ on land diameters, weights and moment ratings for the same size.
| Brand | Their part number | SlimPro equivalent | Line | Type | Bore | OD |
|---|
Bore and OD in inches (mm for the metric series). Click a SlimPro part for full specifications, the spec sheet and CAD. A Kaydon part page names its Silverthin counterpart for identification only; the ratings on each page come from that brand's own catalog.
Kaydon MT and Silverthin ST series → SlewPro
Standard capacity rectangular slewing ring bearings. Dimensions in inches, weight in pounds, capacities in pounds and foot-pounds.
| SlewPro | Kaydon | Silverthin | OD | ID | Height | Weight | Outer BC | Holes | Thread | Inner BC | Holes | Thread | DP | Teeth | Pitch dia | Static axial | Static radial | Static moment |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 30E.0223.20.001 | MTE-145T | STE-145T | 12.286 | 5.709 | 1.968 | 38 | 10.630 | 16 | 5/8-11 UNC | 6.890 | 16 | 5/8-11 UNC | 5/7 | 60 | 12.00 | 132,634 | 41,995 | 20,343 |
| 30E.0223.20.000 | MTE-145 | STE-145 | 12.286 | 5.709 | 1.968 | 38 | 10.630 | 16 | 5/8-11 UNC | 6.890 | 16 | 0.562 | 5/7 | 60 | 12.00 | 132,634 | 41,995 | 20,343 |
| 30E.0289.19.001 | MTE-210 | STE-210 | 14.686 | 8.268 | 1.575 | 38 | 13.190 | 16 | 5/8-11 UNC | 9.449 | 20 | 0.562 | 5/7 | 72 | 14.40 | 183,349 | 58,052 | 36,445 |
| 30E.0289.19.002 | MTE-210T | STE-210T | 14.686 | 8.268 | 1.575 | 38 | 13.190 | 16 | 5/8-11 UNC | 9.449 | 20 | 5/8-11 UNC | 5/7 | 72 | 14.40 | 183,349 | 58,052 | 36,445 |
| 30E.0343.19.001 | MTE-265 | STE-265 | 17.086 | 10.433 | 1.968 | 57 | 15.354 | 18 | 5/8-11 UNC | 11.614 | 24 | 0.562 | 5/7 | 84 | 16.80 | 218,272 | 69,109 | 51,494 |
| 30E.0343.19.002 | MTE-265T | STE-265T | 17.086 | 10.433 | 1.968 | 57 | 15.354 | 18 | 5/8-11 UNC | 11.614 | 24 | 5/8-11 UNC | 5/7 | 84 | 16.80 | 218,272 | 69,109 | 51,494 |
| 30E.0422.25.003 | MTE-324T | STE-324T | 20.486 | 12.750 | 2.062 | 98 | 18.875 | 20 | 5/8-11 UNC | 14.375 | 20 | 5/8-11 UNC | 5/7 | 101 | 20.20 | 330,805 | 104,739 | 96,017 |
| 30E.0508.25.000 | MTE-415T | STE-415T | 24.650 | 16.250 | 2.375 | 132 | 22.250 | 16 | 5/8-11 UNC | 17.750 | 20 | 3/4-10 UNC | 4 | 97 | 24.25 | 398,469 | 126,163 | 139,227 |
| 30E.0508.25.001 | MTE-415 | STE-415 | 24.650 | 16.250 | 2.375 | 132 | 22.250 | 16 | 5/8-11 UNC | 17.750 | 20 | 0.813 | 4 | 97 | 24.25 | 398,469 | 126,163 | 139,227 |
| 30E.0565.25.000 | MTE-470 | STE-470 | 26.900 | 18.500 | 2.375 | 147 | 24.500 | 18 | 5/8-11 UNC | 20.000 | 24 | 0.813 | 4 | 106 | 26.50 | 443,579 | 140,446 | 172,378 |
| 30E.0565.25.001 | MTE-470T | STE-470T | 26.900 | 18.500 | 2.375 | 147 | 24.500 | 18 | 5/8-11 UNC | 20.000 | 24 | 3/4-10 UNC | 4 | 106 | 26.50 | 443,579 | 140,446 | 172,378 |
| 30E.0635.25.006 | MTE-540 | STE-540 | 29.650 | 21.250 | 2.375 | 163 | 27.250 | 24 | 5/8-11 UNC | 22.750 | 28 | 0.813 | 4 | 117 | 29.25 | 496,207 | 157,109 | 216,721 |
| 30E.0635.25.007 | MTE-540T | STE-540T | 29.650 | 21.250 | 2.375 | 163 | 27.250 | 24 | 5/8-11 UNC | 22.750 | 28 | 3/4-10 UNC | 4 | 117 | 29.25 | 496,207 | 157,109 | 216,721 |
| 30E.0705.32.000 | MTE-590 | STE-590 | 33.534 | 23.125 | 2.875 | 283 | 30.625 | 18 | 5/8-11 UNC | 24.875 | 24 | 0.938 | 3 | 99 | 33.00 | 694,997 | 220,049 | 337,004 |
| 30E.0705.32.001 | MTE-590T | STE-590T | 33.534 | 23.125 | 2.875 | 283 | 30.625 | 18 | 5/8-11 UNC | 24.875 | 24 | 7/8-9 UNC | 3 | 99 | 33.00 | 694,997 | 220,049 | 337,004 |
| 30E.0822.35.003 | MTE-705 | STE-705 | 38.201 | 27.750 | 2.875 | 325 | 35.250 | 24 | 5/8-11 UNC | 29.500 | 28 | 0.938 | 3 | 113 | 37.67 | 826,931 | 261,822 | 467,524 |
| 30E.0822.35.004 | MTE-705T | STE-705T | 38.201 | 27.750 | 2.875 | 325 | 35.250 | 24 | 5/8-11 UNC | 29.500 | 28 | 7/8-9 UNC | 3 | 113 | 37.67 | 826,931 | 261,822 | 467,524 |
| 30E.0876.35.000 | MTE-730T | STE-730T | 41.850 | 28.750 | 3.250 | 491 | 38.000 | 20 | 5/8-11 UNC | 31.000 | 24 | 1-8 UNC | 2.5 | 103 | 41.20 | 967,964 | 306,476 | 583,212 |
| 30E.0876.35.001 | MTE-730 | STE-730 | 41.850 | 28.750 | 3.250 | 491 | 38.000 | 20 | 5/8-11 UNC | 31.000 | 24 | 1.063 | 2.5 | 103 | 41.20 | 967,964 | 306,476 | 583,212 |
| 30E.1018.44.001 | MTE-870 | STE-870 | 47.444 | 34.250 | 4.250 | 771 | 43.875 | 24 | 5/8-11 UNC | 36.250 | 28 | 1.188 | 2.5 | 117 | 46.80 | 1,255,063 | 397,377 | 878,773 |
| 30E.1018.44.000 | MTE-870T | STE-870T | 47.444 | 34.250 | 4.250 | 771 | 43.875 | 24 | 5/8-11 UNC | 36.250 | 28 | 1 1/8-7 UNC | 2.5 | 117 | 46.80 | 1,255,063 | 397,377 | 877,047 |
| 30P.0080.06.000 | MTO-050T | STO-050T | 4.331 | 1.968 | 0.787 | 2 | 3.818 | 8 | 5/8-11 UNC | 2.480 | 8 | M6 | — | — | — | 15,157 | 4,799 | 834 |
| 30P.0080.06.001 | MTO-050 | STO-050 | 4.331 | 1.968 | 0.787 | 2 | 3.818 | 8 | 5/8-11 UNC | 2.480 | 8 | 0.26 | — | — | — | 15,157 | 4,799 | 834 |
| 30P.0100.06.000 | MTO-065T | STO-065T | 5.315 | 2.559 | 0.866 | 4 | 4.724 | 8 | 5/8-11 UNC | 3.149 | 8 | M8 | — | — | — | 19,054 | 6,033 | 1,311 |
| 30P.0100.06.001 | MTO-065 | STO-065 | 5.315 | 2.559 | 0.866 | 4 | 4.724 | 8 | 5/8-11 UNC | 3.149 | 8 | 0.354 | — | — | — | 19,054 | 6,033 | 1,311 |
| 30P.0174.13.000 | MTO-122 | STO-122 | 8.898 | 4.803 | 1.339 | 13 | 8.189 | 12 | 5/8-11 UNC | 5.512 | 12 | 0.354 | — | — | — | 72,753 | 23,035 | 8,707 |
| 30P.0174.13.001 | MTO-122T | STO-122T | 8.898 | 4.803 | 1.339 | 13 | 8.189 | 12 | 5/8-11 UNC | 5.512 | 12 | M8 | — | — | — | 72,753 | 23,035 | 8,707 |
| 30P.0196.13.000 | MTO-143 | STO-143 | 9.803 | 5.630 | 1.339 | 15 | 8.937 | 12 | 5/8-11 UNC | 6.496 | 12 | 0.433 | — | — | — | 81,414 | 25,777 | 10,975 |
| 30P.0196.13.001 | MTO-143T | STO-143T | 9.803 | 5.630 | 1.339 | 15 | 8.937 | 12 | 5/8-11 UNC | 6.496 | 12 | M10 | — | — | — | 81,414 | 25,777 | 10,975 |
| 30P.0223.19.003 | MTO-145 | STO-145 | 11.811 | 5.709 | 1.968 | 37 | 10.630 | 16 | 5/8-11 UNC | 6.890 | 16 | 0.562 | — | — | — | 139,694 | 44,230 | 21,426 |
| 30P.0223.19.004 | MTO-145T | STO-145T | 11.811 | 5.709 | 1.968 | 37 | 10.630 | 16 | 5/8-11 UNC | 6.890 | 16 | 5/8-11 UNC | — | — | — | 139,694 | 44,230 | 21,426 |
| 30P.0240.19.000 | MTO-170 | STO-170 | 12.205 | 6.693 | 1.811 | 33 | 11.024 | 12 | 5/8-11 UNC | 7.874 | 12 | 0.512 | — | — | — | 152,791 | 48,377 | 25,222 |
| 30P.0240.19.001 | MTO-170T | STO-170T | 12.205 | 6.693 | 1.811 | 33 | 11.024 | 12 | 5/8-11 UNC | 7.874 | 12 | M12 | — | — | — | 152,791 | 48,377 | 25,222 |
| 30P.0290.19.002 | MTO-210 | STO-210 | 14.370 | 8.268 | 1.575 | 38 | 13.190 | 16 | 5/8-11 UNC | 9.449 | 20 | 0.562 | — | — | — | 183,349 | 58,052 | 36,571 |
| 30P.0290.19.003 | MTO-210T | STO-210T | 14.370 | 8.268 | 1.575 | 38 | 13.190 | 16 | 5/8-11 UNC | 9.449 | 20 | 5/8-11 UNC | — | — | — | 183,349 | 58,052 | 36,571 |
| 30P.0342.20.000 | MTO-265T | STO-265T | 16.535 | 10.433 | 1.968 | 54 | 15.354 | 18 | 5/8-11 UNC | 11.614 | 24 | 5/8-11 UNC | — | — | — | 208,425 | 65,991 | 49,027 |
| 30P.0342.20.002 | MTO-265 | STO-265 | 16.535 | 10.433 | 1.968 | 54 | 15.354 | 18 | 5/8-11 UNC | 11.614 | 24 | 0.562 | — | — | — | 208,425 | 65,991 | 49,027 |
| 30P.0422.25.001 | MTO-324T | STO-324T | 20.486 | 12.750 | 2.062 | 105 | 18.875 | 20 | 5/8-11 UNC | 14.375 | 20 | 5/8-11 UNC | — | — | — | 330,805 | 104,739 | 96,017 |
| 30P.0508.25.002 | MTO-415 | STO-415 | 24.650 | 16.250 | 2.375 | 145 | 22.250 | 16 | 5/8-11 UNC | 17.750 | 20 | 0.813 | 2.5 | 103 | 41.20 | 398,469 | 126,163 | 139,227 |
| 30P.0508.25.002 | MTO-415 | STO-415 | 24.650 | 16.250 | 2.375 | 145 | 22.250 | 16 | 5/8-11 UNC | 17.750 | 20 | 0.813 | 2.5 | 103 | 41.20 | 398,469 | 126,163 | 139,227 |
Gear teeth are Fellows stub form, 20° pressure angle. Our engineers confirm every interchange before we quote.
Send us a drawing or part number
Upload a Kaydon, Silverthin or other drawing, or just type the part number. We will cross it and quote it within 1–2 business days.
Engineering guides
Practical articles from our engineers on specifying, installing and maintaining these parts.
Kaydon® Reali-Slim® Equivalents: How to Cross a Kaydon Part Number to SlimPro
How to read a Kaydon Reali-Slim part number, position by position, and find the SlimPro equivalent: add SP- for catalog parts, and what chan
Read the guide →Silverthin™ Thin Section Bearing Equivalents: Crossing Silverthin Part Numbers to SlimPro
How Silverthin thin section part numbers cross to SlimPro, the 462 sizes we list, and the one look-alike part number that catches people out
Read the guide →"Just Give Me the Closest Cross Roller" — And Why That Mindset Costs You
Cross roller slewing bearings exist because precision is the requirement. Specifying by "closest match" undermines the performance that just
Read the guide →Common Slewing Ring Bearing Failures: Causes, Warning Signs and Prevention
The four most common causes of slewing ring bearing failure, the warning signs that come first, and how to prevent them, or replace a failed
Read the guide →SlimPro Thin Section Bearings: Kaydon® Equivalents, Lines and How to Choose
SlimPro thin section bearings: 1,662 sizes with direct Kaydon Reali-Slim equivalents, in open, sealed, plated, stainless and metric lines, p
Read the guide →Specifying a Slewing Ring Bearing: The Buyer's Checklist
What to send a slewing ring manufacturer, the design checks engineers most often miss (structure, bolts, bolt pattern, mounting surface), an
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