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Unable to locate the right washer?

Subject to satisfactory calculations we can adapt a stock bearing preload disc spring as well as manufacturing a disc spring to your exact specifications.

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Image of plain bearing preload type disc springs

AKA Bearing Preload Washers

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

With 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.

Please note: measurements are in millimeters & weight in kilograms  
Ball Bearing
Ref. No.
Disc Spring
Code No.
Outer Dia.
(De)
Inner Dia.
(Di)
Thickness
(t)
Cone Height
(ho)
Total Height
(lo)
Cone Height Force (N)
75% Defl.
Weight per
1000 pcs.
Thick. Ratio
623 P986202 9.8 6.2 0.20 0.20 0.40 1.00 23 0.07
624 P12872025 12.8 7.2 0.25 0.25 0.50 1.00 29 0.16
625
634
P15882025 15.8 8.2 0.25 0.30 0.55 1.20 23 0.26
626
635
P1889203 18.8 9.2 0.30 0.35 0.65 1.17 31 0.47
607 P188102035 18.8 10.2 0.35 0.35 0.70 1.00 51 0.51
608
627
P218123035 21.8 12.3 0.35 0.40 0.75 1.14 46 0.66
609 P23714304 23.7 14.3 0.40 0.50 0.90 1.25 81 0.83
6000
629
P25714304 25.7 14.3 0.40 0.50 0.90 1.25 63 1.10
6001 P27717304 27.7 17.3 0.40 0.60 1.00 1.50 80 1.10
6200 P29717404 29.7 17.4 0.40 0.70 1.10 1.75 83 1.40
6002
6201
P31720404 31.7 20.4 0.40 0.70 1.10 1.75 81 1.40
6300 P34620404 34.6 20.4 0.40 0.70 1.10 1.75 61 1.80
6003
6202
P34622405 34.6 22.4 0.50 0.70 1.20 1.40 118 2.00
6301 P36620405 36.6 20.4 0.50 0.80 1.30 1.60 110 270
6203 P39625505 39.6 25.5 0.50 0.80 1.30 1.60 110 2.70
6004
6302
P41625505 41.6 25.5 0.50 0.90 1.40 1.80 113 3.10
6005
6204
6303
P46530506 46.5 30.5 0.60 0.90 1.50 1.50 153 4.30
6205
6304
P51535506 51.5 35.5 0.60 0.90 1.50 1.50 135 4.80
6006 P54540506 54.5 40.5 0.60 0.90 1.50 1.50 141 4.60
6007
6206
6305
P61540507 61.5 40.5 0.70 1.10 1.80 1.57 176 8.70
6008 P67550507 67.5 50.5 0.70 1.00 1.70 1.43 161 8.10
6306 P71545507 71.5 45.5 0.70 1.40 2.10 2.00 185 12.0
6207 P7155057 71.5 50.5 0.70 1.40 2.10 2.00 218 10.0
6009 P74555508 74.5 55.5 0.80 1.10 1.90 1.38 211 11.0
6307 P79550508 79.5 50.5 0.80 1.50 2.30 1.88 227 17.0
6010
6208
P79555508 79.5 55.5 0.80 1.50 2.30 1.88 263 15.0
6209 P84560509 84.5 60.5 0.90 1.60 2.50 1.78 359 18.0
6308 P89560509 89.5 60.5 0.90 1.60 2.50 1.78 288 23.0
6011
6210
P89565509 89.5 65.5 0.90 1.60 2.50 1.78 335 19.0
6012 P9457551 94.5 75.5 1.00 1.20 2.20 1.20 325 19.0
6309 P996551 99.0 65.5 1.00 1.60 2.60 1.60 292 32.0
6013
6211
P997051 99.0 70.5 1.00 1.60 2.60 1.60 332 28.0
6310 P109705125 109.0 70.5 1.25 1.45 2.70 1.16 357 50.0
6014
6212
P109755125 109.0 75.5 1.25 1.45 2.70 1.16 398 45.0
6015 P114905125 114.0 90.5 1.25 1.20 2.45 0.96 398 35.0
6311 P119755125 119.0 75.5 1.25 1.55 2.80 1.24 320 61.0
6213 P119855125 119.0 85.5 1.25 1.55 2.80 1.24 392 50.0
6016
6214
P124905125 124.0 90.5 1.25 1.75 3.00 1.40 445 52.0
6312 P129855125 129.0 85.5 1.25 1.95 3.20 1.56 405 68.0
6017
6215
P129955125 129.0 95.5 1.25 1.95 3.20 1.56 500 54.0
6313 P139905125 139.0 90.5 1.25 2.00 3.25 1.60 353 81.0
6018
6216
P139101125 139.0 101.0 1.25 2.00 3.25 1.60 429 66.0
6134 P14995515 149.0 95.5 1.50 1.70 3.20 1.13 379 114.0
6020
6217
P14910165 149.0 106.0 1.50 1.70 3.20 1.13 450 95.0
6315 P15910115 159.0 101.0 1.50 2.00 3.50 1.33 412 131
6021
6218
P15911115 159.0 111.0 1.50 2.00 3.50 1.33 477 113
6316 P16911115 169.0 111.0 1.50 2.30 3.80 1.53 470 141
6022
6219
P16912115 169.0 121.0 1.50 2.30 3.80 1.53 546 121
6317 P1791212 179.0 121.0 2.00 2.20 4.20 1.10 864 202
6024
6220
P1791262 179.0 126.0 2.00 2.20 4.20 1.10 928 187
6318 P1891212 189.0 121.0 2.00 2.30 4.30 1.15 758 244
6221 P1891312 189.0 131.0 2.00 2.30 4.30 1.15 858 215
6319 P1981312 198.0 131.0 2.00 2.50 4.50 1.25 811 256
6026
6222
P1981412 198.0 141.0 2.00 2.50 4.50 1.25 922 224
6224
6320
P213151225 213.0 151.0 2.25 2.25 4.50 1.00 941 294
6030
6321
P223161225 223.0 161.0 2.25 2.35 4.60 1.04 942 310
6226 P228161225 228.0 161.0 2.25 2.70 4.95 1.20 1036 340
6032
6322
P238161225 238.0 161.0 2.25 3.00 5.25 1.33 1020 401
6228 P24817125 248.0 171.0 2.50 2.50 5.00 1.00 1004 467
6034
6324
P25817125 258.0 171.0 2.50 3.00 5.50 1.20 1106 541
6230 P26818125 268.0 181.0 2.50 3.20 5.70 1.28 1154 566.0
6036
6326
P27818125 278.0 181.0 2.50 3.50 6.00 1.40 1154 645.0
6038
6232
P288191275 288.0 191.0 2.75 3.00 5.75 1.09 1145 741.0
6328 P298191275 298.0 191.0 2.75 3.60 6.35 1.31 1306 834.0
6040
6234
P3082023 308.0 202.0 3.00 3.10 6.10 1.03 1299 940.0
6236
6330
P3182123 318.0 212.0 3.00 3.20 6.20 1.07 1301 977.0
6044
6238
6332
P3382323 338.0 232.0 3.00 3.60 6.60 1.20 1414 1050.0
6048
6240
6334
P3582423 358.0 242.0 3.00 4.00 7.00 1.33 1424 1210.0

Please note: measurements are in millimeters & weight in kilograms.


Please use our disc spring enquiry form for competitive quotes and stock enquiries.



Institute of Spring TechnologyMember of UK Spring Manufacturers AssociationBelleville QualityBritish Valve and Actuator Association

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