From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Specification sheet for front hub bearings, detailing dimensions, parts, and load capacities.
| Identifier | ExFiles\Box 136\2\ scan0002 | |
| Date | 9th January 1939 | |
| FRONT HUB BEARING (SPECIAL COMBINED JOURNAL & THRUST BRG) RANSOME & MARLES BEARING Co, LTD NEWARK - ON - TRENT. SHEET N° 1 B SERIES C BEARINGS MARKED THUS * HAVE BEEN MADE ARRGT OF FRONT WHEEL HUB BRGS INNER BRG OUTER BRG TABLE DATA: R & M REF FOR COMPLETE BRG. | DIMENSIONS INNER (BORE B, O D F, WIDTH Y, RAD T') | DIMENSIONS OUTER (BORE G, O D D, WIDTH T, RAD K) | ASSEMBLED WIDTH W | BALLS (N°, DIAM) | R & M CODE WORDS (BEARING PARTS, COMPLETE BRG.) | POSITION OF BEARING IN HUB | OUTER TRACK DIAM | INNER TRACK DIAM | R & M CAPACITY (LBS) R P M (300, 600) SP{Mr Spinney} 1 * | .7503" | 1.215" | .537" | 1/32" CHAM | 1.635" | 2.080" | .617" | 1/8" | .708" | 10 | 3/8" | OUTER RING HIBED, INNER RING HIBIF, CAGE & BALLS HIBOG | HIBAC | OUTER BRG, INNER BRG | 1.811" | 1.049" | 1128 | 895 SP{Mr Spinney} 2 * | 1.1904" | 1.805" | .867" | 13/64" | 2.325" | 2.963" | .770" | 3/32" | 1.145" | 11 | 1/2" | OUTER RING HIBYJ, INNER RING HICAD, CAGE & BALLS HICEF | HIBUH | INNER BRG, OUTER BRG | 2.596" | 1.584" | 2039 | 1617 SP{Mr Spinney} 3 * | .8128" | 1.450" | .686" | 1/16" CHAM | 1.860" | 2.437" | .730" | 9/64" | .829" | 9 | 15/32" | OUTER RING HICOH, INNER RING HICUJ, CAGE & BALLS HICYK | HICIG | OUTER BRG, INNER BRG | 2.1207" | 1.1713" | 1498 | 1188 SP{Mr Spinney} 4 * | 1.2815" | 2.055" | .968" | 13/64" | 2.615" | 3.375" | .934" | 5/32" | 1.308" | 10 | 5/8" | OUTER RING HIDEG, INNER RING HIDIH, CAGE & BALLS HIDDJ | HIDAF | OUTER BRG, INNER BRG | 2.938" | 1.676" | 2740 | 2172 SP{Mr Spinney} 5 | .875" | | | | | 2.640" | | | 1.001" | | | OUTER RING, INNER RING, CAGE & BALLS | | OUTER BRG, INNER BRG | | | 1855 | 1472 SP{Mr Spinney} 6 | 1.3438" | | | | | 3.576" | | | 1.384" | | | OUTER RING, INNER RING, CAGE & BALLS | | INNER BRG, OUTER BRG | | | 3225 | 2560 SP{Mr Spinney} 7 * | .9379" | 1.725" | .843" | 3/64" | 2.295" | 3.030" | .941" | 1/8" | 1.031" | 9 | 5/8" | OUTER RING HIGEJ, INNER RING HIGIK, CAGE & BALLS HIGOL | HIGAH | OUTER BRG, INNER BRG | 2.6495" | 1.3875" | 2470 | 1957 SP{Mr Spinney} 8 * | 1.4384" | 2.398" | 1.056" | 3/16" CHAM | 3.050" | 3.9300" | 1.096" | 1/8" | 1.470" | 10 | 3/4" | OUTER RING HIGYN, INNER RING HIJAK, CAGE & BALLS HIJEL | HIGUM | INNER BRG, OUTER BRG | 3.457" | 1.945" | 3775 | 2995 SP{Mr Spinney} 9 | 1.000" | | | | | 3.1425" | | | 1.073" | | | OUTER RING, INNER RING, CAGE & BALLS | | OUTER BRG, INNER BRG | | | 2630 | 2132 SP{Mr Spinney} 10 | 1.625" | | | | | 4.2375" | | | 1.551" | | | OUTER RING, INNER RING, CAGE & BALLS | | INNER BRG, OUTER BRG | | | 4320 | 3420 SP{Mr Spinney} 11 | 1.125" | | | | | 3.5625" | | | 1.195" | | | OUTER RING, INNER RING, CAGE & BALLS | | OUTER BRG, INNER BRG | | | 3400 | 2700 SP{Mr Spinney} 12 | 1.6875" | | | | | 4.625" | | | 1.7140" | | | OUTER RING, INNER RING, CAGE & BALLS | | INNER BRG, OUTER BRG | | | 5560 | 4415 SP{Mr Spinney} 21 * | .6875" | 1.156" | .566" | 1/32" | 1.450" | 1.875" | .563" | 1/16" | .687" | 10 | 11/32" | OUTER RING HIMEP, INNER RING HIMIQ, CAGE & BALLS HIMOR | HIMAN | OUTER BRG, INNER BRG | 1.6414" | .9468" | 972 | 770 SP{Mr Spinney} 22 * | 1.125" | 1.683" | .844" | 13/64" | 2.010" | 2.500" | .624" | 3/32" | .984" | 11 | 13/32" | OUTER RING HIMYT, INNER RING HINAC, CAGE & BALLS HINED | HIMUS | INNER BRG, OUTER BRG | 2.2422" | 1.4195" | 1412 | 1120 SP{Mr Spinney} 23 * | .7503" | 1.341" | .659" | 1/32" | 1.733" | 2.250" | .690" | 3/32" | .790" | 9 | 15/32" | OUTER RING HINOJ, INNER RING HINUL, CAGE & BALLS HINYL | HINIG | OUTER BRG, INNER BRG | 1.9883" | 1.0455" | 1498 | 1188 SP{Mr Spinney} 24 * | 1.3128" | 1.990" | .917" | 13/64" | 2.500" | 3.1496" | .851" | 1/8" | 1.226" | 11 | 9/16" | OUTER RING HIPEG, INNER RING HIPJK, CAGE & BALLS HIPOK | HIPAD | INNER BRG, OUTER BRG | 2.7995" | 1.6625" | 2510 | 1990 SP{Mr Spinney} 25 * | .844" | 1.402" | .659" | 1/16" | 1.765" | 2.250" | .690" | 3/32" | .790" | 10 | 7/16" | OUTER RING HIPYM, INNER RING HIQAG, CAGE & BALLS HIQEJ | HIPUL | OUTER BRG, INNER BRG | 2.0095" | 1.1235" | 1478 | 1173 SP{Mr Spinney} 26 * | 1.4065" | 2.098" | .917" | 3/16" | 2.540" | 3.1496" | .851" | 3/32" | 1.226" | 12 | 17/32" | OUTER RING HIQDL, INNER RING HIQUM, CAGE & BALLS HIQYN | HIQIK | INNER BRG, OUTER BRG | 2.8394" | 1.7635" | 2470 | 1960 SP{Mr Spinney} 27 * | .9379" | 1.700" | .800" | 3/64" | 2.156" | 2.8125" | .850" | 1/8" | .910" | 9 | 9/16" | OUTER RING HIREK, INNER RING HIRIL, CAGE & BALLS HIROM | HIRAJ | OUTER BRG, INNER BRG | 2.4435" | 1.3065" | 2053 | 1628 SP{Mr Spinney} 28 * | 1.500" | 2.332" | 1.070" | 13/64" | 2.970" | 3.750" | 1.015" | 1/8" | 1.450" | 10 | 11/16" | OUTER RING HIRYP, INNER RING HISAK, CAGE & BALLS HISEL | HIRUN | INNER BRG, OUTER BRG | 3.3182" | 1.9318" | 3225 | 2560 SP{Mr Spinney} 32 * | 1.250" | 1.875" | .867" | .300" CHAM AT 36° | 2.325" | 2.963" | .770" | 3/32" | 1.145" | 11 | 1/2" | OUTER RING, INNER RING, CAGE & BALLS | | INNER BRG, OUTER BRG | 2.596" | 1.584" | 2039 | 1617 SP{Mr Spinney} 42 | 1.2815" | 1.875" | .870" | .300" | | 2.963" | | | 1.145" | 11 | | OUTER RING, INNER RING, CAGE & BALLS | | INNER BRG | | 1.588" | 2039 | 1617 B7842 * | 1.0623" | 1.625" | .906" | .200" | 1.980" | 2.500" | .625" | 3/32" | 1.0337" | 10 | 7/16" | OUTER RING HISON, INNER RING HISUP, CAGE & BALLS HISYQ | HISIM | INNER BRG, OUTER BRG | 2.224" | 1.338" | 1478 | 1173 Footer: DRAWN E.G.J 5-1-39 TRACED E B 6 1 39 TRG CHKD. D.M.H. 9-1-39 | ||