AKA Bearing Preload Washers

65 different sizes in stock from 9.8mm up to 358mm outside diameter

plain bearing preload type disc springsWith dimensions to suit most standard roller bearings (radial ball bearings), this range of plain bearing preload disc springs are manufactured from CK75 Carbon Steel (DIN 1.1248) with a zinc phosphate and oiled finish.

The preload disc springs (or washers) assist in maintaining positioning accuracy of the bearing (with no end play) and also minimise vibration and shaft deflections. Correct preloading will also increase bearing rigidity and negate excessive running noise.

Preload disc springs can also be useful in other applications. The relatively low forces of the preloaded disc springs means they could act as light duty linkages or mechanisms.

A note of caution however when considering columns of these disc springs. A ratio of cone height/thickness in excess of 1.50 could cause springs to invert and the column to collapse.

Complete the blow form for competitive quote

Please contact us for more information by using our
disc spring enquiry form.

NameOuter Dia (mm)Inner Dia (mm)Thick (mm)Cone Ht. (mm)Overall Ht. (mm)Cone Ht Thick RatioForce (N) 75% DeflectionWt per 1000Brg. Ref. No.Detailshf:att:pa_outside-diahf:att:pa_inner-diahf:att:pa_thick
P9862029.86.20.20.20.41230.07623 » 9-86-20-2
P1287202512.87.20.250.250.51290.16624 » 12-87-20-25
P188920318.89.20.30.350.651.17310.47626, 635 » 18-89-20-3
P18810203518.810.20.350.350.71510.51607 » 18-810-20-35
P21812303521.812.30.350.40.751.14460.66608, 627 » 21-812-30-35
P2371430423.714.30.40.50.91.25810.83609 » 23-714-30-4
P2571430425.714.30.40.50.91.25631.16000, 629 » 25-714-30-4
P2771730427.717.30.40.611.5801.16001 » 27-717-30-4
P2971740429.717.40.40.71.11.75831.46200 » 29-717-40-4
P3172040431.720.40.40.71.11.75811.46002, 6201 » 31-720-40-4
P3462040434.620.40.40.71.11.75611.86300 » 34-620-40-4
P3462240534.622.40.50.71.21.411826003, 6202 » 34-622-40-5
P3662040536.620.40.50.81.31.61102706301 » 36-620-40-5
P3962550539.625.50.50.81.31.61102.76203 » 39-625-50-5
P4162550541.625.50.50.91.41.81133.16004, 6302 » 41-625-50-5
P4653050646.530.50.60.91.51.51534.36005, 6204, 6303 » 46-530-50-6
P5153550651.535.50.60.91.51.51354.86205, 6304 » 51-535-50-6
P5454050654.540.50.60.91.51.51414.66006 » 54-540-50-6
P6154050761.540.50.71.11.81.571768.76007, 6206, 6305 » 61-540-50-7
P6755050767.550.50.711.71.431618.16008 » 67-550-50-7
P7154550771.545.50.71.42.12185126306 » 71-545-50-7
P7155050771.550.50.71.42.12218106207 » 71-550-50-7
P7455550874.555.50.81.11.91.38211116009 » 74-555-50-8
P7955050879.550.50.81.52.31.88227176307 » 79-550-50-8
P7955550879.555.50.81.52.31.88263156010, 6208 » 79-555-50-8
P8456050984.560.50.91.62.51.78359186209 » 84-560-50-9
P8956050989.560.50.91.62.51.78288236308 » 89-560-50-9
P8956550989.565.50.91.62.51.78335196011, 6210 » 89-565-50-9
P945755194.575.511.22.21.2325196012 » 94-575-51
P9965519965.511.62.61.6292326309 » 9965-51
P9970519970.511.62.61.6332286013, 6211 » 9970-51
P10970512510970.51.251.452.71.16357506310 » 10970-51-25
P10975512510975.51.251.452.71.16398456014, 6212 » 10975-51-25
P11490512511490.51.251.22.450.96398356015 » 11490-51-25
P11975512511975.51.251.552.81.24320616311 » 11975-51-25
P11985512511985.51.251.552.81.24392506213 » 11985-51-25
P12490512512490.51.251.7531.4445526016, 6214 » 12490-51-25
P12985512512985.51.251.953.21.56405686312 » 12985-51-25
P12995512512995.51.251.953.21.56500546017, 6215 » 12995-51-25
P13990512513990.51.2523.251.6353816313 » 13990-51-25
P1391011251391011.2523.251.6429666018, 6216 » 1391011-25
P1499551514995.51.51.73.21.133791146134 » 14995-51-5
P149101651491061.51.73.21.13450956020, 6217 » 1491061-5
P159101151591011.523.51.334121316315 » 1591011-5
P159111151591111.523.51.334771136021, 6218 » 1591111-5
P169111151691111.52.33.81.534701416316 » 1691111-5
P169121151691211.52.33.81.535461216022, 6219 » 1691211-5
P179121217912122.24.21.18642026317 » 1791212
P179126217912622.24.21.19281876024, 6220 » 1791262
P189121218912122.34.31.157582446318 » 1891212
P189131218913122.34.31.158582156221 » 1891312
P198131219813122.54.51.258112566319 » 1981312
P198141219814122.54.51.259222246026, 6222 » 1981412
P2131512252131512.252.254.519412946224, 6320 » 2131512-25
P2231612252231612.252.354.61.049423106030, 6321 » 2231612-25
P2281612252281612.252.74.951.210363406226 » 2281612-25
P2381612252381612.2535.251.3310204016032, 6322 » 2381612-25
P248171252481712.52.55110044676228 » 2481712-5
P258171252581712.535.51.211065416034, 6324 » 2581712-5
P268181252681812.53.25.71.2811545666230 » 2681812-5
P278181252781812.53.561.411546456036, 6326 » 2781812-5
P2881912752881912.7535.751.0911457416038, 6232 » 2881912-75
P2981912752981912.753.66.351.3113068346328 » 2981912-75
P308202330820233.16.11.0312999406040, 6234 » 3082023
P318212331821233.26.21.0713019776236, 6330 » 3182123
P338232333823233.66.61.2141410506044, 6238, 6332 » 3382323
P35824233582423471.33142412106048, 6240, 6334 » 3582423